Download - TEG Properties
i
Table ofContents
Introduction 1Quality, Service, and Product Information . . . . . . . . . . . . . . . . . . . . . 1
Table 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Stewardship Guidelines and Principles . . . . . . . . . . . . . . . . . . 3
Non-supported applications of Dow-manufactured EG, DEG,TEG,TETRA, and By-Products of Glycol Manufacturing . . . . . . . . . . . . . . . . . . . . 3
Properties 5Table 2 Physical Properties of Triethylene Glycol . . . . . . . . . . . . . . . 5
Table 3 Solubilities of Various Materials in Triethylene Glycol . . . . . . . . 6
Table 4 Triethylene Glycol Compatibility with Elastomeric Materials . . . . . 7
Table 5 Constant Boiling Mixtures of Triethylene Glycol . . . . . . . . . . . 8
Figure 1 Freezing Points of Aqueous Triethylene Glycol Solutions . . . . . . . 9
Figure 2 Boiling Points vs . Composition of Aqueous Triethylene Glycol Solutions at Various Pressures . . . . . . . . . . . . . . . . 10
Figure 3 Condensation Temperatures vs . Composition of Aqueous Triethylene Glycol Solutions at Various Pressures . . . . . . . . . . 11
Figure 4 Vapor Pressures of Triethylene Glycol at Various Temperatures . . 12
Figure 5 Vapor Pressures of Aqueous Triethylene Glycol Solutions at Various Temperatures . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 6 Specific Gravities of Aqueous Triethylene Glycol Solutions . . . . . 14
Figure 7 Viscosities of Aqueous Triethylene Glycol Solutions . . . . . . . . . 15
Figure 8 Specific Heats of Aqueous Triethylene Glycol Solutions . . . . . . . 16
Figure 9 Thermal Conductivities of Aqueous Triethylene Glycol Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 10 Dew Points of Aqueous Triethylene Glycol Solutions at Various Contact Temperatures . . . . . . . . . . . . . . . . . . . 18
Figure 11 Comparative Hygroscopicities of Various Glycols at 70°F (21°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 12 Refractive Indices of Pure Triethylene Glycol . . . . . . . . . . . . 20
ii
Figure 13 Refractive Indices of Aqueous Triethylene Glycol Solutions at 77°F (25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 14 Surface Tensions of Pure Triethylene Glycol . . . . . . . . . . . . . 22
Figure 15 Surface Tensions of Aqueous Triethylene Glycol Solutions at 77°F (25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 16 Electrical Conductivities of Aqueous Triethylene Glycol Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Health and Environmental Information 25Health Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Environmental Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Biodegradation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Storage and Handling 26Shipping Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Product Safety 27
Emergency Service 28
Sales Office 29
Table ofContents
1
Introduction
Introduction
Precautions: Carefully review our current Material Safety Data Sheet
Dow: Your Best Source for Triethylene Glycol Quality Dow is the world’s largest producer of ethylene oxide and glycols, with over 70 years of experience in their manufacture, marketing, and research and development . The uniform implementation of statistical process control at all of our plants enables us to consistently deliver the high-quality product you require . Our total approach to Quality and Quality Systems is continuously improved to ensure that our facilities meet the requirements for registration to the stringent ISO 9000 series of standards .
Optimum performance demands a quality product, and that is what we deliver . Our vast distribution system of plants, terminals, tankers, barges, tank cars, and trucks helps to ensure your delivery of triethylene glycol when and where you need it .
Service For solutions to problems or answers to questions, Dow offers extensive technical service and support, available through trained sales representatives as well as our skilled staff from the Research and Development Department . Your order of triethylene glycol will be processed expertly and quickly when you place a call to one of our many helpful customer service representatives . (See page 29 .)
Product Information Formula C6H14O4 Molecular Formula HOCH2CH2OCH2CH2OCH2CH2OH
CAS Number 112-27-6 Synonyms Glycol-bis(hydroxyethyl) ether 2,2’-[1,2-ethanediylbis(oxy)] bis-ethanol Triglycol TEG T3EG TriEG
Triethylene glycol is a transparent, colorless, low-volatility, moderate-viscosity, water-soluble liquid . Under normal conditions, there is no detectable odor; under high vapor concentrations, a slightly sweet odor may be detected . It is completely miscible with water and many organic liquids . Triethylene glycol has properties similar to other glycols and may be used preferentially in applications requiring a higher boiling point, higher molecular weight, or lower volatility than diethylene glycol .
The hydroxyl groups on triethylene glycol undergo the usual alcohol chemistry giving a wide variety of possible derivatives . Hydroxyls can be converted to aldehydes, alkyl halides, amines, azides, carboxylic acids, ethers, mercaptans, nitrate esters, nitriles, nitrite esters, organic esters, perox-ides, phosphate esters and sulfate esters .
Triethylene glycol may be used directly as a plasticizer or modified by esterification . The solubility properties of triethylene glycol are important for many applications . End-uses for triethylene glycol are numerous . (See Table 1 .)
2
Introduction
Introduction
Hygroscopicity • Dehydration of natural gas
• Moisturizing and plasticizing cork, adhesives
Plasticizer • Safety glass
• Separation membranes (silicone rubber, polyvinyl acetate, cellulose triacetate)
• Ceramic materials (resistant refractory plastics, molded ceramics)
Low Volatility • Gas dehydration
Solvent • Resin impregnants and other additives
• Steam-set printing inks
• Aromatic and paraffinic hydrocarbons separations
• Cleaning compounds
• Polyethylene terephthalate production equipment cleaning
• Cyanoacrylate and polyacrylonitrile
Chemical Intermediate • Unsaturated polyester resin
• Various resins of the alkyd type used as laminating agents in adhesives
• Esterification products used in plasticizer intermediates for nitrocellulose lacquers and vinyl resins
• Polyester polyols for polyurethanes
• Thermoplastic polyurethanes
• Silcone compounds
• Emulsifiers
• Lubricants
Freezing Point Depression • Heat transfer fluids
Table 1 Applications
3
Introduction
Introduction
Product Stewardship Guidelines and Principles of The Dow Chemical CompanyThe following bullet points identify some applications that are NOT supported by Dow for EG Products on a go-forward basis . The reasons for these limitations include areas in which we have decided not to pursue for general business reasons and actions that would minimize unnecessary risk and liabilities to the business . In addition, the following list of uses not supported by Dow does not imply a Dow warranty or Dow support of uses in applications not covered by this list . This list is not all-inclusive .
Non-supported applications of Dow- manufactured EG, DEG,TEG,TETRA, and By-Products of Glycol Manufacturing (Dow EG Products):
• The use of Dow EG Products in the production of tobacco and in the manu-facture of tobacco products (including but not limited to additives, humectants, filters, inks, and paper) is not supported by Dow .
• The use of Dow EG Products for the generation of artificial smoke/theatrical fogs/mist is not supported by Dow .
• The use of Dow EG Products as an ingredient in fuel for warming foods (SternoTM-like application) or in fuel for heating an enclosed space where human exposure is possible is not supported by Dow .
• The use of Dow EG Products in fire extinguishing sprinkler systems is not supported by Dow .
• The use of Dow EG Products in the manufacture of munitions is not supported by Dow .
• The use of Dow EG Products in the production of deicers for use on roadways and pedestrian walkways is not supported by Dow .
• The use of Dow EG Products as a component of heat transfer fluids in systems where the heat transfer fluid could infiltrate (e .g ., via an exchanger leak, backflow prevention failure, or other means) a potable water system is not supported by Dow .
• The use of Dow EG Products purposely as a non-reacted component in a formulation for direct internal or external human/animal contact, including but not limited to ingestion, inhalation, and skin contact, and in medical/veterinary devices and medical/veterinary applications is not supported by Dow . (Examples of some such applications are uses as a direct component in foods, beverages, pharmaceuticals, cosme- tics, or personal care products .)
• The use of Dow EG Products for consumer or hospital deodorizing or air “purifying” purposes by spraying as an aerosol is not supported by Dow .
• The use of Dow EG Products as a non-reacted component in adhesives, packaging that has direct contact with food or beverages is not supported by Dow .
4
Introduction
Introduction
• The use of Dow EG Products as a non-reacted component in the formulation of glues, pastes, or items where the potential for sufficient human contact and/or ingestions exists (including but not limited to children’s school glues/paste or art/craft glue/paste) is not supported by Dow .
To enter into new applications beyond the traditional standard industrial use applications, contact your Dow representative to review the specific application . Dow has a risk assessment process whereby the application will be reviewed and a deter-mination will be made as to whether the application meets Dow’s requirements and can therefore be supported by Dow . Because use conditions and applicable laws may differ from one location to another and may change with time, when an application is supported by Dow, Dow does not warrant and is not responsible for the use in such application .
NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED .
Further, any violation of or failure to comply with the information contained in Dow’s Material Safety Data Sheet, Product Label, Product Information Guide, product literature or other product safety information is a misuse of Dow’s EG and Higher Glycol Products . These documents can be obtained by contacting your Dow representative or Dow’s Customer Information Group (800) 447-4369 . We can never specify all circumstances where misuse might occur, so if at any time a customer or downstream use appears to be improper or unsafe, please contact our Product Steward at (225) 353-6122 .
5 Properties
Properties
Property Scientific Units Common Units
Autoignition Temperature 349°C 660°F
Boiling Point at 760 mm Hg 288 0°C 550 4°F
∆ Boiling Point/∆ Pressure (750–770 mm Hg) 0 0073°C/kPa 0 055°C/mm Hg
Critical Pressure 3,313 3 kPa 24,852 mm Hg
Critical Specific Volume 0 443 L/gmol 7 10 ft3/lbmol
Critical Temperature 440°C 824°F
Dielectric Constant 23 69 23 69
Electrical Conductivity 0 20 x 10-6 mhos/cm 0 002 micromhos/cm
Evaporation Rate (Butyl Acetate = 1) <0 001 <0 001
Flammable Limits in Air, Lower 0 9%(V) 0 9%(V)
Flammable Limits in Air, Upper 9 2%(V) 9 2%(V)
Flash Point, Cleveland Open Cup ASTM D 92 191°C 375°F
Flash Point, Pensky-Martens Closed Cup ASTM D 93 177°C 350°F
Freezing Point -4 3°C 24 3°F
Heat of Combustion at 25°C -3,500 kJ/gmol -10,020 Btu/lb
Heat of Vaporization 62 5 kJ/gmol 179 Btu/lb
Molecular Weight 150 17 g/mol 150 17 g/mol
Onset of Initial Decomposition 240°C 464°F
Refractive Index, nD, 20°C 1 4559 1 4559
Solubility in Water at 20°C, wt% 100% 100%
Solubility of Water in Triethylene Glycol at 20°C, wt% 100% 100%
Specific Gravity, 20/20°C 1 1255 1 1255
∆ Specific Gravity vs ∆ Temperature (10–40°C) 0 00078/°C 0 00078/°C
Surface Tension 45 5 mN/m 45 5 dynes/cm
Vapor Density (Air = 1) 5 2 5 2
Vapor Pressure at 20°C <0 001 kPa <0 01 mm Hg
Viscosity at 20°C 49 0 mPs 49 0 cP
Table 2 Physical Properties of Triethylene GlycolDetermined on purified samples of Triethylene Glycol
The data provided for these properties are typical values, intended only as guides, and should not be construed as sales specifications .
6
Properties
Properties
Material Solubility
Acetone Completely Soluble
Animal Glue (Dry) Slightly Soluble
Benzene Completely Soluble
Carbon Tetrachloride 40 6
Castor Oil 0 3
Cellulose Acetate Completely Soluble
Chlorobenzene Completely Soluble
Coconut Oil Insoluble
Cottonseed Oil Insoluble
Dextrin Completely Soluble
Dextrin (10% in water) Insoluble
Dibutyl Phthalate 19 8
Dichloroethyl Ether Completely Soluble
Diethanolamine Completely Soluble
Ethyl Ether 20 4
Ethylene Glycol Stearate Slightly Soluble
Gum Damar Slightly Soluble
Heptane Slightly Soluble
Hydrous Wool Fat Slightly Soluble
Kauri Gum Slightly Soluble
Lard Oil Insoluble
Linseed Oil Insoluble
Methanol Completely Soluble
Monoethanolamine Completely Soluble
Nitrocellulose Completely Soluble
o-Dichlorobenzene Completely Soluble
Olive Oil Insoluble
Table 3 Solubilities of Various Materials in Triethylene GlycolSolubility, g/100 mL of Triethylene Glycol at 25°C
Material Solubility
Paraffin Oil Insoluble
Phenol Completely Soluble
Pine Oil Completely Soluble
Rosin 5 0
Shellac Slightly Soluble
Soy Bean Oil Insoluble
Sperm Oil Insoluble
Tall Oil 10 1
Tetrachloroethylene 17 7
Toluene 33 0
Tung Oil Insoluble
Turkey Red Oil 12 3
Urea 31 0
7
Table 4 Triethylene Glycol Compatibility with Elastomeric Materials
Properties
Properties
25˚C (77˚F) 80˚C (176˚F) 160˚C (320˚F)
Adiprene™ L-100 Good Poor Poor
Black Rubber 3773 Good Poor Poor
Buna N (or 25) Good Good
Buna S Good Fair Poor
Butyl Rubber Good Good
Compressed Asbestos Good Good Fair
EPDM Good Good Good
EPR Rubber Good Good Good
Hycar™ D-24 Good Fair
Hypalon™ Good Poor Poor
Kalrez™ Good Good Good
Natural Rubber Gum Good Poor Poor
Neoprene 7797 Good Fair
Red Rubber Number 107 Good Poor Poor
Saraloy™ 300 Good Poor Poor
Silicone No 65 Good Good
Thiokol™ 3060 Good Poor Poor
Viton™ A Good Good Poor
TemperatureMaterial
8
Properties
Properties
Table 5 Constant Boiling Mixtures of Triethylene Glycol
In Azeotrope
InUpperLayer
In LowerLayer
Triethylene Glycol Acenaphthene
1 1255 288 0277 9
271 5 3565
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol (5 mm Hg) Benzyl Ether
1 1255 145 5(a) Azeo(a) 2872
1585
6040
U 72L 28
Triethylene Glycol Benzyl Phenyl Ether
1 1255 288 0286 5
280 0 4060
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol Biphenyl
1 1255 288 0256 1
None
Triethylene Glycol (3 mm Hg) Diethylene Glycol
1 12551 1184
135 3(a)
108 0(a)None(a)
Triethylene Glycol Diphenylmethane
1 1255 288 0263 0
263 0 2060
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol 1,2-Diphenylmethane
1 1255 288 0284 5
275 5 4258
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol Ethyl Phthalate
1 1255 288 0298 5
< 285 5 > 58 (c) (c) (c)
Triethylene Glycol Isoamyl Benzoate
1 1255 288 0262 0
261 4 1486
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol Isoamyl Oxalate
1 1255 288 0268 0
Reacts
Triethylene Glycol Isoamyl Salicylate
1 1255 288 0277 5
269 0 3070
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol Methyl Phthalate
1 1255 288 0283 2
277 0 3367
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol Phenyl Benzoate
1 1255 288 0315 0
286 0 8020
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol Phenyl Ether
1 12551 0677(b)
288 0259 0
258 7 397
(c)(c)
(c)(c)
(c)(c)
Triethylene Glycol (4 mm Hg) Phenyl Ether
1 12551 0677(b)
141 0(a)
102 0(a)None(a)
Triethylene Glycol Water
1 12551 0000
288 0100 0
None
Triethylene Glycol (10 mm Hg) Water
1 12551 0000
161 0(a)
11 0(a)None(a)
Specific Gravity
at 20/20°C
Boiling Point at
760 mm Hg, 0°C
Composition % by Wt at 20°CBoiling Point at
760 mm Hg, 0°C
Components AzeotropeRelative Volume
of Layers At 20°C, %
(a) At the pressure investigated; (b) At 30/20°C; (c) Data not available
9
Properties
Properties
Figure 1 Freezing Points of Aqueous Triethylene Glycol Solutions
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 1: Freezing Points ofAqueous Triethylene Glycol Solutions
Temp
erat
ure,
°C
10
0
-10
-20
-30
-40
-50
Temp
erat
ure,
°F
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
Triethylene Glycol, Percent by Weight in Water
0 10 20 30 40 50 60 70 80 90 100
9
10
Properties
Properties
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 2: Boiling Points vs. Composition ofAqueous Triethylene Glycol Solutions at Various Pressures
Temp
erat
ure,
°C
350
300
250
200
150
100
50
Temp
erat
ure,
°F
140
180
220
260
300
340
380
420
460
500
540
580
620
660
Triethylene Glycol, Percent by Weight in Water0 10 20 30 40 50 60 70 80 90 100
10
1520 mm Hg*
760 mm Hg
300 mm Hg
*2 atmospheres absolute, 1 atmosphere gauge
Figure 2 Boiling Points vs Composition of Aqueous Triethylene Glycol Solutions at Various Pressures
*2 atmospheres absolute, 1 atmosphere gauge
11
Properties
Properties
Figure 3 Condensation Temperatures vs Composition of Aqueous Triethylene Glycol Solutions at Various Pressures
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 3: Condensation Temperatures vs. Composition ofAqueous Triethylene Glycol Solutions at Various Pressures
Temp
erat
ure,
°C
350
300
250
200
150
100
50
Temp
erat
ure,
°F
140
180
220
260
300
340
380
420
460
500
540
580
620
660
Triethylene Glycol, Percent by Weight in Water0 10 20 30 40 50 60 70 80 90 100
11
*2 atmospheres absolute, 1 atmosphere gauge
1520 mm H g*
760 mm Hg
300 mm Hg
*2 atmospheres absolute, 1 atmosphere gauge
12
Properties
Properties
Figure 4 Vapor Pressures of Triethylene Glycol at Various Temperatures
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 4: Vapor Pressures of Triethylene Glycolat Various Temperatures
Triethylene Glycol Antoine Constants for Calculating Vapor Pressure3-Constant Equation (Temperature Range = 150 - 300°C)
C°003-051=egnaR7002036.7=AgHmm=P1854.6512=B
C°=T24429.561=CLog 10 (P) = A – B/(T + C)
5-Constant Equation (Temperature Range = 360.15 - 712.51°K)K15.217-51.063=egnaR5025.59=A
aP=P7.43821=BnivleK=T0.0=C
D = -9.6 6752E=3.0015 x 10 -29
N=10ln(P) = A – B/(T + C) + D(ln(T)) + ETN
Temperature, °F220 240 280 320 360 400 440 480 560 640
Vapo
rPre
ssur
e,mm
Hg
1
23468
10
2030406080
100
200300400600800
1000
Temperature, °C100 120 140 160 180 200 240 280 320 360
Triethylene GlycolAntoine Constants A = 7.6302007 B = 2156.4581 C = 165.92442
Log(P) = A–B/(t+C)mm Hg, Log10 , ˚C
12
Triethylene Glycol Antoine Constants for Calculating Vapor Pressure
3-Constant Equation (Temperature Range = 150–300°C)
A = 7 6302007 Range = 150–300°CB = 2156 4581 P = mm HgC = 165 92442 T = °CLog10 (P) = A – B/(T + C)
5-Constant Equation (Temperature Range = 360 15–712 51°K)
A = 95 5205 Range = 360 15–712 51°KB = 12834 7 P = PaC = 0 0 T = KelvinD = -9 66752E = 3 0015 x 10-29
N = 10ln(P) = A – B/(T + C) + D(ln(T)) + ETN
13
Properties
Properties
Figure 5 Vapor Pressures of Aqueous Triethylene Glycol Solutions at Various Temperatures
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 5: Vapor Pressures ofAqueous Triethylene Glycol Solutions at Various Temperatures
Triethylene Glycol Antoine Constants for Calculating Vapor Pressure3-Constant Antoine EquationLog 10 (P) = A – B/(T + C)
P = mm Hg, T = °CCBA%tW,GEirT
575.722545.3661991959.70130.822105.1761492229.705732.822363.1861645878.707967.822600.7961670738.708328.922740.8271621627.709722.632752.6081512026.759840.832225.1481943594.779666.042474.1881534404.789997.242411.6291541112.799568.242208.0791989240.75.99375.251898.2202511274.7001
Freezing PointCurves
-40 -20 0 20 40 60 80 100 130 1600.10.20.40.6
1246
10204060
100200400600
1,0002,0004,0006,000
10,000
Temperature, ˚C
Temperature, ˚F
Vapo
r Pre
sure
, mm
Hg
Trie
thyl
ene
Glyc
ol,P
erce
ntby
Wei
ght i
n W
ater
-40 -20 0 20 40 80 120 160 200 240 300
0 5070909597989999.5
100
80
13
TriEG, Wt% A B C0 7 959199 1663 545 227 575
50 7 922294 1671 501 228 03170 7 878546 1681 363 228 23780 7 837076 1697 006 228 76990 7 726126 1728 047 229 82395 7 620215 1806 257 236 22797 7 495349 1841 522 238 04898 7 404435 1881 474 240 66699 7 211145 1926 114 242 79999 5 7 042989 1970 802 242 865
100 7 472115 2022 898 152 573
Triethylene Glycol Antoine Constants for Calculating Vapor Pressure3-Constant Antoine Equation Log10 (P) = A – B/(T + C) P = mm Hg, T = °C
14
Properties
Properties
Figure 6 Specific Gravities of Aqueous Triethylene Glycol Solutions
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 6: Specific Gravities of AqueousTriethylene Glycol Solutions
Specific Gravity at T/60°F = A + Bx + Cx 2
x = Weight % Triethylene GlycolCBAF°,T
6-E9002.5-3-E8628.12050.105-6-E4038.4-3-E6647.19130.106-E4978.2-3-E7425.11210.1056-E5594.5-3-E8157.10299.00016-E4883.4-3-E0145.14089.00516-E9805.3-3-E8604.17269.00026-E1997.2-3-E5023.13149.00526-E8480.2-3-E1152.17719.0003
Freezing PointCurves -50˚F
0˚F
50˚F
100˚F
150˚F
200˚F
250˚F
300˚F
0 10 20 30 40 50 60 70 80 90 1000.90
0.92
0.94
0.96
0.98
1.00
1.02
1.04
1.06
1.08
1.10
1.12
1.14
1.16
1.18
Triethylene Glycol, Percent by Weight in Water
Appa
rent
Spe
cific
Gra
vity
, T/6
0˚F
14
T, °F A B C-50 1 0502 1 8268E-3 -5 2009E-6
0 1 0319 1 7466E-3 -4 8304E-650 1 0121 1 5247E-3 -2 8794E-6
100 0 9920 1 7518E-3 -5 4955E-6150 0 9804 1 5410E-3 -4 3884E-6200 0 9627 1 4068E-3 -3 5089E-6250 0 9413 1 3205E-3 -2 7991E-6300 0 9177 1 2511E-3 -2 0848E-6
Specific Gravity at T/60°F = A + Bx + Cx2
x = Weight % Triethylene Glycol
15
Properties
Properties
Figure 7 Viscosities of Aqueous Triethylene Glycol Solutions
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 7: Viscosities ofAqueous Triethylene Glycol Solutions
Viscosity, Centiposies (cP) = A x 10 Bx
x = Weight % Triethylene GlycolT, °F A B
2-E7699.201035.102-E8439.100290.1052-E3675.161985.00012-E1843.154073.00512-E1371.117372.00023-E4607.995781.0052
3-E9131.862041.0003
Freezing PointCurves
0˚F
50˚F
100˚F
150˚F
200˚F
250˚F
300˚F
0 10 20 30 40 50 60 70 80 90 1000.1
0.2
0.40.6
1
2
46
10
20
4060
100
200
400600
1000
Triethylene Glycol, Percent by Weight in Water
Visc
osity
, Cen
tipoi
ses
15
T, °F A B0 1 53010 2 9967E-2
50 1 09200 1 9348E-2100 0 58916 1 5763E-2150 0 37045 1 3481E-2200 0 27371 1 1731E-2250 0 18759 9 7064E-3300 0 14026 8 1319E-3
Viscosity, Centiposies (cP) = A x 10Bx
x = Weight % Triethylene Glycol
16
Properties
Properties
Figure 8 Specific Heats of Aqueous Triethylene Glycol Solutions
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 8: Specific Heats ofAqueous Triethylene Glycol Solutions
Specific Heat = A + BT+CT 2
T = Temperature, °CCBA%tW,GEirT
6-E3419.24-E6827.2-04500.106-E2594.25-E4417.2-50769.0016-E4254.24-E9240.209429.0026-E2596.14-E0003.421088.0036-E4173.14-E6822.692238.0046-E7580.14-E6829.792287.0057-E0000.84-E0004.900227.0067-E0267.43-E1780.188666.0077-E1758.23-E3402.139306.0087-E8409.13-E0082.188835.0098-E0417.5-3-E9293.141684.0001
Freezing PointCurves
-50 0 50 100 150 2000.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
Temperature, ˚C
Temperature, ˚F
Spec
ific
Heat
, Btu
/lb/˚
F
Trie
thyl
ene
Glyc
ol,P
erce
ntby
Wei
ght i
n W
ater
-40 0 40 80 120 160 200 240 280 320 360
0 102040506070
80
90
100
30
16
TriEG, Wt% A B C0 1 00540 -2 7286E-4 2 9143E-6
10 0 96705 -2 7144E-5 2 4952E-620 0 92490 2 0429E-4 2 4524E-630 0 88012 4 3000E-4 1 6952E-640 0 83229 6 2286E-4 1 3714E-650 0 78229 7 9286E-4 1 0857E-660 0 72200 9 4000E-4 8 0000E-770 0 66688 1 0871E-3 4 7620E-780 0 60393 1 2043E-3 2 8571E-790 0 53888 1 2800E-3 1 9048E-7
100 0 48614 1 3929E-3 -5 7140E-8
Specific Heat = A + BT+CT2
T = Temperature, °C
17
Properties
Properties
Figure 9 Thermal Conductivities of Aqueous Triethylene Glycol Solutions
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 9: Thermal Conductivities ofAqueous Triethylene Glycol Solutions
Thermal Conductivity = A + BTT = Temperature, °CTriEG, Wt% A B
4-E7661.776633.004-E0000.600013.0014-E0000.400092.0024-E0000.200272.0035-E3333.333152.0045-E3333.376722.0054-E7666.1-33902.0064-E0000.2-00881.0074-E3338.2-76271.0084-E3338.2-76551.0094-E7661.3-33141.0001
Freezing PointCurves
-20 0 20 40 60 80 100 120 140 160 180 2000.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
Temperature, ˚C
Temperature, ˚F
Ther
mal
Con
duct
ivity
, Btu
(ft)/
hr (f
t2 ) ˚F
Trie
thyl
ene
Glyc
ol,P
erce
ntby
Wei
ght i
n W
ater
0 40 80 120 160 200 240 320 360280
0
20
10
40
30
50
60
70
8090100
17
TriEG, Wt% A B0 0 33667 7 1667E-4
10 0 31000 6 0000E-420 0 29000 4 0000E-430 0 27200 2 0000E-440 0 25133 3 3333E-550 0 22767 3 3333E-560 0 20933 -1 6667E-470 0 18800 -2 0000E-480 0 17267 -2 8333E-490 0 15567 -2 8333E-4
100 0 14133 -3 1667E-4
Thermal Conductivity = A + BTT = Temperature, °C
18
Properties
Properties
Figure 10 Dew Points of Aqueous Triethylene Glycol Solutions at Various Contact Temperatures
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 10: Dew Points of Aqueous Triethylene Glycol Solutions atVarious Contact Temperatures
Dew or Frost Point = A + BTT = Temperature, °CTriEG, Wt% A B
05010.18030.3-0501610.19000.7-0706110.1547.01-0878189.0329.71-0991039.0252.52-5989558.0576.43-8905108.0914.14-9936237.0591.74-5.99
Freezing PointCurves
-30 -20 -10 0 10 20 30 40 50-50
-40
-30
-20
-10
0
10
20
30
40
50
60
Contact Temperatures of Solution, ˚C
Contact Temperatures of Solution, ˚F
Fros
tPoi
nt, ˚
CDe
wPo
int,
˚C
Fros
tPoi
nt, ˚
FDe
wPo
int,
˚F
-20 0 20 40 60 80 100 120
99.599
9895
7050
Triethylene Glycol,Percent by Weightin Water
9080
-50-40-30-20-100102030405060708090100110120130140
18
TriEG, Wt% A B50 -3 0308 1 0105070 -7 0009 1 0161080 -10 745 1 0116090 -17 923 0 9818795 -25 252 0 9301998 -34 675 0 8559899 -41 419 0 8015099 5 -47 195 0 73263
Dew or Frost Point = A + BTT = Temperature, °C
19
Properties
Properties
Figure 11 Comparative Hygroscopicities of Various Glycols at 70°F (21°C)
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 11: Comparative Hygroscopicities ofVarious Glycols at 70°F (21°C)
25 30 35 40 45 50 55 60 65 70 755
678
10
60
20
30
40
50
7080
100
Percent Relative Humidity
Perc
entW
ater
(Bas
ed o
n Dr
y Hu
mec
tant
at E
quili
briu
m)
Diethylene Glycol
Ethylene Glycol
Propylene Glycol
Dipropylene Glycol
Triethylene Glycol
19
20
Properties
Properties
Figure 12 Refractive Indices of Pure Triethylene Glycol
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 12: Refractive Indices ofPure Triethylene Glycol
Refractive Index = 1.4626 – 0.000340TT = Temperature, °C
20 22 24 26 28 30 32 34 36 38 401.446
1.448
1.450
1.452
1.454
1.456
1.458
1.460
Temperature, ˚C
Reac
tive
Inde
x
20
Refractive Index = 1 4626 – 0 000340TT = Temperature, °C
21
Properties
Properties
Figure 13 Refractive Indices of Aqueous Triethylene Glycol Solutions at 77°F (25°C)
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 13: Refractive Indices ofAqueous Triethylene Glycol Solutions at 77°F (25°C)
Refractive Index, 77°F (25°C) = 1.3326 + 0.0012403 xx = Weight % Triethylene Glycol
0 10 20 30 40 50 60 70 80 90 1001.30
1.32
1.34
1.36
1.38
1.40
1.42
1.44
1.46
1.48
1.50
Triethylene Glycol, Percent by Weight in Water
Reac
tive
Inde
x
21
Refractive Index, 77°F (25°C) = 1 3326 + 0 0012403 xx = Weight % Triethylene Glycol
22
Properties
Properties
Figure 14 Surface Tensions of Pure Triethylene Glycol
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 14: Surface Tensions ofPure Triethylene Glycol
Surface Tension, dynes/cm = 47.330 – 0.088TT = Temperature, °C
0 50
40 80 120 160 200 240 280
100 15034
36
38
40
42
44
46
Temperature, ˚C
Temperature, ˚F
Surfa
ceTe
nsio
n, d
ynes
/cm
22
Surface Tension, dynes/cm = 47 330 – 0 088TT = Temperature, °C
23
Properties
Properties
Figure 15 Surface Tensions of Aqueous Triethylene Glycol Solutions at 77°F (25°C)
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 15: Surface Tensions ofAqueous Triethylene Glycol Solutions at 77°F (25°C)
0 10 20 30 40 50 60 70 80 90 10030
40
50
60
70
Triethylene Glycol, Percent by Weight in Water
Surfa
ceTe
nsio
n, d
ynes
/cm
80
23
24
Properties
Properties
Figure 16 Electrical Conductivities of Aqueous Triethylene Glycol Solutions
The Dow Chemical Company Triethylene Glycol Product Guide
Figure 16: Electrical Conductivities ofAqueous Triethylene Glycol Solutions
Note: The quality of water used for dilution can significantly affectelectrical conductivity.
0 10 20 30 40 50 60 70 80 90 1000
2
4
6
8
10
12
Triethylene Glycol, Percent by Weight in Water
Elec
trica
l Con
duct
ivity
, mic
rom
hom
s/cm
24
Note: The quality of the water used for dilution can significantly affectthe electrical conductivity
25
Health EffectsSee our current Material Safety Data Sheet for the most current exposure limits, health, first aid, and toxicology information .
Environmental InformationSee our current Material Safety Data Sheet for current toxicity information .
BiodegradationFor information concerning the biodegrad-ability of triethylene glycol, please refer to the latest Material Safety Data Sheet .
Health and Environmental Information
Health and Environmental Information
26
This information is offered as a guide in planning bulk storage facilities for glycols . Glycols are generally considered to be stable, noncorrosive chemicals with high flash points . Under ordinary conditions, all of these chemicals can be stored in mild steel vessels . For long-term storage, or if trace iron contamination and the development of color are objectionable in any of the glycols, a storage vessel lined with a baked-phenolic resin, an air-drying epoxy-phenolic resin, or a vinyl resin or a stainless steel or aluminum tank is suggested . Zinc or galvanized iron is not recommended, and copper or copper alloys may cause product discoloration .
It is not general practice to use an inert gas in the vapor space of glycol storage tanks, because all chemicals in this family have high boiling points and the vapors in the tanks are relatively nonflammable . However, if extremely low water content is required, consistent with a long storage period, a nitrogen blanket can be used to exclude atmospheric moisture and air . Blanketing with nitrogen will also minimize low-level oxidation, if necessary for the desired application . The inert gas prevents air oxidation in order to maintain product within acidity specifications . Increased acidity enhances iron pickup from steel vessels . Alternatively, a desiccant unit can be installed on the tank vent line to dry incoming air .
If above-ground outside storage is planned, it may be necessary to install provisions for heating tanks and lines . Many glycols have a
moderately high freezing point or become relatively viscous at severe winter tempera-tures . However, excessive temperature can cause undesirable degradation of glycols . Automatic controls are suggested to limit the temperature of the contents to 120°F (49°C) .
In cold climates, it is generally desirable to make provisions for draining the pump and the transfer lines if they are outside the building . If this is not feasible, it may be necessary to insulate and steam trace or otherwise heat the transfer lines to prevent freezing of the product . Care must be taken in such an application, because continued exposure of glycols to high temperatures, greater than 120°F (49°C), will result in product degradation . Transfer piping of mild steel is generally used .
Shipping DataTriethylene glycol is not regulated by the U .S . Department of Transportation; therefore, it does not have a DOT Shipping Name, Hazard Classification, DOT Warning Label, or Identification Number .
Storage and Handling
Storage and Handling
Weight per Gallon at 20°C 9 36 lb
Coefficient of Expansion at 55°C 0 00072
Flash Point, Pensky-Martens Closed Cup 350°F
Net Contents and Type of Container
1-Gallon Tin Can 9 0 lb
5-Gallon DOT 17E, Pail 47 lb
55-Gallon DOT 17E, Drum 522 lb
Shipping Data For Triethylene Glycol
27
When considering the use of triethylene glycol in any particular application, review and understand our current Material Safety Data Sheet for the necessary safety and health information . For Material Safety Data Sheets and other product safety information on Dow products, contact The Dow Chemical Company sales office nearest you . Before handling any products mentioned in this booklet, you should obtain the available product safety information from the suppliers of those products and take the necessary steps to comply with all precau-tions regarding the use of triethylene glycol .
No chemical should be used as or in a food, drug, medical device, or cosmetic, or in a product process in which it may come in contact with a food, drug, medical device, or cosmetic until the user has determined the
suitability of the use . Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s work-place and disposal practices are in compliance with applicable laws and other governmental enactments .
Dow requests that the customer read, understand, and comply with the informa-tion contained in this publication and the current Material Data Safety Sheet(s) . The customer should furnish the information in this publication to its employees, contrac-tors, and customers, or any other users of the product(s), and request that they do the same .
Product Safety
Product Safety
28
Location Dow Products All Chemical Products
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Phone United States: (800) 822-4357 (toll-free)
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If you are at sea, radio U S Coast Guard, who can directly contact Dow HELP or CHEMTREC
Phone Dow HELP: (800) 822-4357 (toll-free)
Phone CHEMTREC: (800) 424-9300 (toll-free)
Emergency Service
Emergency Service
The Dow Chemical Company maintains an around-the-clock emergency service for its products . The Chemical Manufacturers Association (CHEMTREC), Transportation Canada (CANUTEC), and the Chemical Emergency Agency Service maintain an around-the-clock emergency service for all chemical products .
DO NOT WAIT Phone if in doubt You will be referred to a specialist for advice
29
For additional information, contact our customer service center:
The Dow Chemical Company 2040 Dow Center Midland, MI 48674www dow com Phone: (800) 232-2436
Sales Office
Sales Office
NOTICE: No freedom from any patent owned by Seller or others is to be inferred Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and other governmental enactments Seller assumes no obligation or liability for the information in this document NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED
Published February 2007 ®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow Form No: XXX-0207X CRCG