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Form No: 066-00009-601QRPUC-2179

Triethylene Glycol

Union Carbide Corporation Triethylene Glycol Product Guide

IMPORTANTUnion Carbide Corporation has compiled the information contained herein from what it believes are authorative sources and believes that it is accurate and factual as of the date printed. It is offered solely as a convenience to its customers and intended only as a guide concerning the products mentioned. Since the user’sproduct formulation, specific use application, and conditions of use are beyond Union Carbide’s control, Union Carbide makes no warranty or representationregarding the results that may be obtained by the user. It shall be the responsibility of the user to determine the suitability of any products mentioned for the user’sspecific application. This information is not to be taken as a warranty or representation for which Union Carbide assumes legal responsibility nor as permission topractice any patented invention without a license.

©2000 Union Carbide Corporation.

Table of Contents:2 Introduction

3........Table 1: Applications

4 Properties4........Table 2: Physical Properties of Triethylene Glycol5........Table 3: Solubilities of Various Materials in Triethylene Glycol6........Table 4: Triethylene Glycol Compatibility with Elastomeric Materials7........Table 5: Constant Boiling Mixtures of Triethylene Glycol8........Figure 1: Freezing Points of Aqueous Triethylene Glycol Solutions9........Figure 2: Boiling Points vs. Composition of Aqueous Triethylene Glycol Solutions at

Various Pressures10......Figure 3: Condensation Temperatures vs. Composition of Aqueous Triethylene Glycol

Solutions at Various Pressures11......Figure 4: Vapor Pressures of Triethylene Glycol at Various Temperatures12......Figure 5: Vapor Pressures of Aqueous Triethylene Glycol Solutions at Various

Temperatures13......Figure 6: Specific Gravities of Aqueous Triethylene Glycol Solutions14......Figure 7: Viscosities of Aqueous Triethylene Glycol Solutions15......Figure 8: Specific Heats of Aqueous Triethylene Glycol Solutions16......Figure 9: Thermal Conductivities of Aqueous Triethylene Glycol Solutions17......Figure 10: Dew Points of Aqueous Triethylene Glycol Solutions at Various Contact

Temperatures18......Figure 11: Comparative Hygroscopicities of Various Glycols at 70°F (21°C)19......Figure 12: Refractive Indices of Pure Triethylene Glycol20......Figure 13: Refractive Indices of Aqueous Triethylene Glycol Solutions at 77°F (25°C)21......Figure 14: Surface Tensions of Pure Triethylene Glycol22......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 Effects

24 Environmental Information

25 Specifications

26 FDA and EPA Status

27 Storage and Handling

27 Shipping

28 Product Safety

29 Emergency Service

30 Sales Office


1

IntroductionPrecautions:Carefully review the current Material Safety DataSheet.

Not recommended for use as an ingredient in foodor beverages.

Union Carbide . . . Your best sourcefor Triethylene GlycolQuality…Union Carbide is the world’s largest producer ofethylene oxide and glycols, with over 70 years ofexperience in their manufacture, marketing, andresearch and development. The uniformimplementation of statistical process control at allour plants enables us to consistently deliver thehigh-quality product you require. Our totalapproach to Quality and Quality Systems iscontinuously improved to ensure that our facilitiesmeet the requirements for registration to thestringent ISO 9002 series of standards.

Optimum performance demands a quality product,and that is what we deliver. Our vast distributionsystem of plants, terminals, warehouses, tankers,barges, tank cars and trucks helps to ensure yourdelivery of triethylene glycol when and where youneed it.

Service . . .For solutions to problems or answers to questions,take advantage of Union Carbide’s technicalservice and support, available through trainedsales representatives as well as a skilled staff fromour Research and Development Department. Yourorder of triethylene glycol will be processedexpertly and quickly when you place a call to oneof our many helpful customer servicerepresentatives. (See page 30.)

Triethylene Glycol Formula

C6H14O4

Molecular Formula HOCH2CH2OCH2CH2OCH2CH2OH

CAS Registry Number 112-27-6

Synonyms Glycol-bis(hydroxyethyl) ether 2,2’-[1,2-ethanediylbis(oxy)] bis-ethanolTriglycolTEGT3EG TriEG

Triethylene glycol is a transparent, colorless, low-volatility, moderate-viscosity, water-soluble liquid.Under normal conditions, there is no detectableodor; under high vapor concentrations, a slightlysweet odor may be detected. It is completelymiscible with water and many organic liquids.Triethylene glycol has properties similar to otherglycols and may be used preferentially inapplications requiring a higher boiling point,higher molecular weight or lower volatility thandiethylene glycol.

The hydroxyl groups on triethylene glycol undergothe usual alcohol chemistry giving a wide varietyof possible derivatives. Hydroxyls can beconverted to aldehydes, alkyl halides, amines,azides, carboxylic acids, ethers, mercaptans,nitrate esters, nitriles, nitrite esters, organic esters,peroxides, phosphate esters and sulfate esters.

Triethylene glycol may be used directly as aplasticizer or modified by esterification. Thesolubility properties of triethylene glycol areimportant for many applications. End-uses fortriethylene glycol are numerous. (See Table 1.)


2

Table 1: Applications

Hygroscopicity • Dehydration of natural gasMoisturizing 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• Explosives

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

Union Carbide does not recommend triethylene glycol or other higherglycols for the following uses or applications:• As an ingredient in artificial smoke or theatrical fog• As an ingredient in drugs or health aids taken by mouth• As an ingredient in fuel for warming foods or in fuel for heating an enclosed space where personnel

exposure is possible• As a direct food additive in foods or beverages• In any use in or in the preparation of a tobacco product• In heated mixtures with strong acids or bases where explosive decomposition may occur• In applications above the thermal decomposition temperatures.


3

PropertiesTable 2: Physical Properties of Triethylene GlycolDetermined on purified samples of Triethylene GlycolProperty Scientific Units Common UnitsAutoignition Temperature 349°C 660°F

Boiling Point at 760 mmHg 288.0°C 550.4°F

∆ Boiling Point/∆ Pressure (750 - 770 mmHg) 0.0073°C/kPa 0.055°C/mmHg

Critical Pressure 3,313.3 kPa 24,852 mmHg

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 micromhos/m 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 mmHg

Viscosity at 20°C 49.0 mPs 49.0 cP


4

Table 3: Solubilities of Various Materials in Triethylene GlycolSolubility, g/100 ml of Triethylene Glycol at 25°C Acetone Completely Soluble Lard Oil Insoluble

Animal Glue (Dry) Slightly Soluble Linseed Oil Insoluble

Benzene Completely Soluble Methanol Completely Soluble

Carbon Tetrachloride 40.6 Monoethanolamine Completely Soluble

Castor Oil 0.3 Nitrocellulose Completely Soluble

Cellulose Acetate Completely Soluble oo -Dichlorobenzene Completely Soluble

Chlorobenzene Completely Soluble Olive Oil Insoluble

Coconut Oil Insoluble Paraffin Oil Insoluble

Cottonseed Oil Insoluble Phenol Completely Soluble

Dextrin Completely Soluble Pine Oil Completely Soluble

Dextrin (10% in water) Insoluble Rosin 5.0

Dibutyl Phthalate 19.8 Shellac Slightly Soluble

Dichloroethyl Ether Completely Soluble Soya Bean Oil Insoluble

Diethanolamine Completely Soluble Sperm Oil Insoluble

Ethyl Ether 20.4 Tall Oil 10.1

Ethylene Glycol Stearate Slightly Soluble Tetrachloroethylene 17.7

Gum Damar Slightly Soluble Toluene 33.0

Heptane Slightly Soluble Tung Oil Insoluble

Hydrous Wool Fat Slightly Soluble Turkey Red Oil 12.3

Kauri Gum Slightly Soluble Urea 31.0


5

Table 4: Triethylene Glycol Compatibility with Elastomeric Materials

Temperature

Material 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


6

Table 5: Constant Boiling MixturesComponents Azeotrope

Boiling Boiling RelativeSpecific Point at Point at In In In VolumeGravity 760 mmHg, 760 mmHg, Azeo- Upper Lower of Layersat 20/20°C °C °C trope Layer Layer at 20°C, %

Triethylene Glycol 1.1255 288.0 271.5 35 (c) (c) (c)Acenaphthene 277.9 65 (c) (c) (c)

Triethylene Glycol (5mmHg) 1.1255 145.5(a) Azeo(a) 28 15 60 U 72Benzyl Ether 72 85 40 L 28

Triethylene Glycol 1.1255 288.0 280.0 40 (c) (c) (c)Benzyl Phenyl Ether 286.5 60 (c) (c) (c)

Triethylene Glycol 1.1255 288.0 NoneBiphenyl 256.1

Triethylene Glycol (3mmHg) 1.1255 135.3(a) None(a)

Diethylene Glycol 1.1184 108.0(a)

Triethylene Glycol 1.1255 288.0 263.0 20 (c) (c) (c)Diphenylmethane 263.0 60 (c) (c) (c)

Triethylene Glycol 1.1255 288.0 275.5 42 (c) (c) (c)1,2-Diphenylmethane 284.5 58 (c) (c) (c)

Triethylene Glycol 1.1255 288.0 <285.5 >58 (c) (c) (c)Ethyl Phthalate 298.5

Triethylene Glycol 1.1255 288.0 261.4 14 (c) (c) (c)Isoamyl Benzoate 262.0 86 (c) (c) (c)

Triethylene Glycol 1.1255 288.0 ReactsIsoamyl Oxalate 268.0

Triethylene Glycol 1.1255 288.0 269.0 30 (c) (c) (c)Isoamyl Salicylate 277.5 70 (c) (c) (c)

Triethylene Glycol 1.1255 288.0 277.0 33 (c) (c) (c)Methyl Phthalate 283.2 67 (c) (c) (c)

Triethylene Glycol 1.1255 288.0 286.0 80 (c) (c) (c)Phenyl Benzoate 315.0 20 (c) (c) (c)

Triethylene Glycol 1.1255 288.0 258.7 3 (c) (c) (c)Phenyl Ether 1.0677(b) 259.0 97 (c) (c) (c)

Triethylene Glycol (4mmHg) 1.1255 141.0(a) None(a)

Phenyl Ether 1.0677(b) 102.0(a)

Triethylene Glycol 1.1255 288.0 NoneWater 1.0000 100.0

Triethylene Glycol (10 mmHg) 1.1255 161.0(a) None(a)

Water 1.0000 11.0(a)

(a) At the pressure investigated; (b) At 30/20°C; (c) Data not available


7

Composition,% by Wt at 20°C


8

Figure 1: Freezing Points of Aqueous Triethylene Glycol Solutions

Tem

pera

ture

, °C

10

0

-10

-20

-30

-40

-50

Tem

pera

ture

, °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

Figure 2: Boiling Points vs. Composition of Aqueous Triethylene Glycol Solutions at Various Pressures

Tem

pera

ture

, °C

350

300

250

200

150

100

50

Tem

pera

ture

, °F

140

180

220

260

300

340

380

420

460

500

540

580

620

660


0 10 20 30 40 50 60 70 80 90 100

2 Atmospheres Gauge

760 mmHg

300 mmHg


10

Figure 3: Condensation Temperatures vs. Composition of Aqueous Triethylene Glycol Solutions at Various Pressures

Tem

pera

ture

, °C

350

300

250

200

150

100

50

Tem

pera

ture

, °F

140

180

220

260

300

340

380

420

460

500

540

580

620

660


0 10 20 30 40 50 60 70 80 90 100

2 Atmospheres Gauge

760 mmHg

300 mmHg


11

Figure 4: Vapor Pressures of Triethylene Glycol at Various Temperatures

Triethylene Glycol Antoine Constants for Calculating Vapor Pressure3-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 - 712.51KB=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

Temperature, °F 220 240 280 320 360 400 440 480 560 640

Vapo

r Pre

ssur

e, m

mH

g

1

2

34

68

10

20

3040

6080

100

200

300400

600800

1000

Temperature, °C

100 120 140 160 180 200 240 280 320 360

Triethylene GlycolAntoine Constants A=7.6302007 B=2156.4581 C=165.92442

Log(P)=A–B/(t+C)mm Hg, Log10, ˚C


12

Figure 5: Vapor Pressures of Aqueous Triethylene Glycol Solutions at Various Temperatures

Triethylene Glycol Antoine Constants for Calculating Vapor Pressure3-Constant Antoine EquationLog10 (P) = A – B/(T + C)

P = mm Hg, T = °C

TriEG, Wt% A B C 0 7.959199 1663.545 227.57550 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 1970.802 242.865100 7.472115 2022.898 152.573

Freezing Point Curves

-40 -20 0 20 40 60 80 100 130 1600.10.2

0.40.6

1

2

46

1020

4060

100200

400600

1,000

2,000

4,0006,000

10,000

Temperature, ˚C

Temperature, ˚F

Vapo

r P

resu

re, m

mH

g

Trie

thyl

ene

Gly

col,

Per

cent

by

Wei

ght i

n W

ater

-40 -20 0 20 40 80 120 160 200 240 300

0 5070909597989999.5

100

80


13

Figure 6: Specific Gravities of Aqueous Triethylene Glycol Solutions

Specific Gravity at T/60°F = A + Bx + Cx2

x = Weight % Triethylene Glycol

T, °F A B C -50 1.0502 1.8268E-3 -5.2009E-60 1.0319 1.7466E-3 -4.8304E-650 1.0121 1.5247E-3 -2.8794E-6100 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

Freezing Point Curves -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


App

aren

t Spe

cific

Gra

vity

, T/6

0˚F


14

Figure 7: Viscosities of Aqueous Triethylene Glycol Solutions

Viscosity, Centiposies (cP) = A x 10Bx

x = Weight % Triethylene Glycol

T, °F A B0 1.53010 2.9967E-250 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


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


Vis

cosi

ty, C

entip

oise

s


15

Figure 8: Specific Heats of Aqueous Triethylene Glycol Solutions

Specific Heat = A + BT+CT2

T = Temperature, °C

TriEG, Wt% A B C0 1.00540 -2.7286E-4 2.9143E-610 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-7100 0.48614 1.3929E-3 -5.7140E-8


-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

Spe

cific

Hea

t, B

tu/l

b/˚F

Trie

thyl

ene

Gly

col,

Per

cent

by

Wei

ght i

n W

ater

-40 0 40 80 120 160 200 240 280 320 360

0 102040506070

80

90

100

30


16

Figure 9: Thermal Conductivities of Aqueous Triethylene Glycol Solutions

Thermal Conductivity = A + BTT = Temperature, °C

TriEG, Wt% A B0 0.33667 7.1667E-410 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-4100 0.14133 -3.1667E-4


-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

(ft2 ) ˚

F

Trie

thyl

ene

Gly

col,

Per

cent

by

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

Figure 10: Dew Points of Aqueous Triethylene Glycol Solutions atVarious Contact Temperatures

Dew or Frost Point = A + BT T = Temperature, °C

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


-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

t Poi

nt, ˚

CD

ew P

oint

, ˚C

Fros

t Poi

nt, ˚

FD

ew P

oint

, ˚F

-20 0 20 40 60 80 100 120

99.599

98

95

7050

Triethylene Glycol,Percent by Weightin Water

9080

-50-40-30-20-100102030405060708090100110120130140


18

Figure 11: Comparative Hygroscopicities of Various 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

Per

cent

Wat

er, (

Bas

ed o

n D

ry H

umec

tant

at E

quili

briu

m)

Diethylene Glycol

Ethylene Glycol

Propylene Glycol

Dipropylene Glycol

Triethylene Glycol


19

Figure 12: Refractive Indices of Pure Triethylene Glycol

Refractive Index = 1.4626 – 0.000340T T = 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

Rea

ctiv

e In

dex


20

Figure 13: Refractive Indices of Aqueous Triethylene Glycol Solutions at 77°F (25°C)

Refractive Index, 77°F (25°C) = 1.3326 + 0.0012403 x x = 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


Rea

ctiv

e In

dex


21

Figure 14: Surface Tensions of Pure Triethylene Glycol

Surface Tension, dynes/cm = 47.330 – 0.088T T = Temperature, °C

0 50

40 80 120 160 200 240 280

100 15034

36

38

40

42

44

46

Temperature, ˚C

Temperature, ˚F

Sur

face

Ten

sion

, dyn

es/c

m


22

Figure 15: Surface Tensions of Aqueous Triethylene Glycol Solutions at 77°F (25°C)

0 10 20 30 40 50 60 70 80 90 10030

40

50

60

70


Sur

face

Ten

sion

, dyn

es/c

m

80


23

Figure 16: Electrical Conductivities of Aqueous 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


Ele

ctric

al C

ondu

ctiv

ity, m

icro

mho

ms/

cm


24

Health EffectsTriethylene glycol is slightly toxic. See the latest Material Safety Data Sheet for the most current exposurelimits, health, first aid, and toxicology information.

Environmental InformationTriethylene glycol has been shown to be relatively nontoxic to bacteria and aquatic life. See the latestMaterial Safety Data Sheet for current information.

Biodegradation The biodegradability of triethylene glycol was evaluated by extended-term biochemical oxygen demand(BOD) tests. Using unacclimated biomass, the BOD tests indicated that triethylene glycol is slowlybiodegraded. However, with acclimation of the microorganisms, as in a wastewater treatment plant,biodegradation increases to a rapid rate.


25

SpecificationsSpecification Regular Grade Gas Treating Grade High Purity GradeMinimum Purity, 99.0 99.0 99.5%wt

Maximum Acidity, %wt as Acetic Acid 0.01 0.01 0.01

pH, 50% Solution in Water 6.0 to 8.0

Maximum Water, 0.10 0.10 0.10%wt

Maximum Ethylene Glycol, %wt 0.10 0.10

Maximum Diethylene Glycol, %wt 0.50 0.10

Maximum Color, Platinum-Cobalt Units 25 25 25

Suspended Matter Substantially Free Substantially Free Substantially Free

Supplemental Quality Description

Description Regular Grade Gas Treating Grade High Purity GradeSpecific Gravity at 20/20°C 1.124 to 1.127 1.124 to 1.127 1.124 to 1.127

Distillation at Initial Boiling Initial Boiling Will distill entirely760 mmHg Point: 278°C maximum Point: 278°C maximum within a 15°C range

95 ml: 295°C maximum 95 ml: 295°C maximum between 280° Dry Point: 300°C maximum Dry Point: 300°C maximum and 297°C

Water Solubility Completely miscible

Refractive Index, nD

at 20°C 1.4549 to 1.4565


26

FDA and EPA Status(a)

FDA (21CFR) Permitted Use§ 175.105 Component of adhesives used in articles intended for packaging, transporting, or

holding food.

§ 175.300 Plasticizer in resinous and polymeric coatings applied as a continuous film or enamel over a metal substrate or applied as a continuous film or enamel to any suitable substrate provided that the coating serves as a functional barrier between the food and the substrate and is intended for repeated food-contact use. Plasticizer in can side-seam cement. Component of certain polyester resins.

§ 175.380 Component of xylene-formaldehyde resins condensed with 4,4’-isopropylidene diphenol-epichlorohydrin epoxy resins.

§ 175.390 Component of zinc-silicon dioxide matrix coatings used as food-contact surfaces for bulk reusable containers intended for storing, handling, and transporting food.

§ 176.170 Component of the coated or uncoated food contact surface of paper and paperboard in § 176.180 contact with fatty, aqueous, and dry food.

§ 177.1200 Constituent of the base sheet cellophane or of coatings applied to cellophane to impart desired technological properties.

§ 177.1210 Component of closure-sealing gaskets and overall discs for food containers.

§ 177.1240 Component of 1,4-cyclohexylene dimethylene terephthalate and 1,4-cyclohexylene dimethylene isophthalate copolymers.

§ 177.1400 Constituent of the base sheet or of coatings applied to water-insoluble hydroxyethyl-cellulose film used for packaging food.

§ 177.1630 Component of polyethylene terephthalate film used for packaging, transporting, or holding food.

§ 178.3740 Plasticizer in polymeric food-packaging materials(b).

§ 178.3910 Components of surface lubricants used in the drawing, stamping, and forming of metallic articles from rolled foil or sheet stock by further processing(b).

EPA (40CFR) Permitted Use § 180.1001(d) Inert ingredient (deactivator) for use in formulations applied to growing crops only up

to the time of harvest.

(a) For complete information on conditions of use, refer to the applicable section in the Code of Federal Regulations.(b) This application requires triethylene glycol containing a maximum of 0.1 wt % diethylene glycol. Triethylene Glycol, High

Purity Grade, meets this FDA requirement.

The foregoing is provided for your convenience. The FDA and/or other Federal and state regulatory agencies may haveadditional requirements and/or may periodically amend requirements. It is your obligation to be familiar with and comply withall laws, rules, and regulations applicable to your use of triethylene glycol.

Storage and Handling This information is offered as a guide in planningbulk storage facilities for glycols. Glycols aregenerally considered to be stable, non-corrosivechemicals with high flash points. Under ordinaryconditions, all of these chemicals can be stored inmild steel vessels. For long-term storage, or if traceiron contamination and the development of colorare objectionable in any of the glycols, a storagevessel lined with a baked-phenolic resin, an air-drying epoxy-phenolic resin, or a vinyl resin or astainless steel or aluminum tank is suggested. Zincor galvanized iron is not recommended, andcopper or copper alloys may cause productdiscoloration.

It is not general practice to use an inert gas in thevapor space of glycol storage tanks, because allchemicals in this family have high boiling pointsand the vapors in the tanks are relatively non-flammable. However, if extremely low watercontent is required, consistent with a long storageperiod, a nitrogen blanket can be used to excludeatmospheric moisture and air. Blanketing withnitrogen will also minimize low-level oxidation, ifnecessary for the desired application. The inertgas prevents air oxidation in order to maintainproduct within acidity specifications. Increasedacidity enhances iron pickup from steel vessels.Alternatively, a desiccant unit can be installed onthe tank vent line to dry incoming air.

If above ground outside storage is planned, it maybe necessary to install provisions for heating tanksand lines. Many glycols have a moderately highfreezing point or become relatively viscous atsevere winter temperatures. However, excessivetemperature can cause undesirable degradation ofglycols. Automatic controls are suggested to limitthe temperature of the contents to 120°F (49°C).

In cold climates, it is generally desirable to makeprovisions for draining the pump and the transferlines if they are outside the building. If this is notfeasible, it may be necessary to insulate and steamtrace or otherwise heat the transfer lines toprevent freezing of the product. Care must be

taken in such an application, because continuedexposure of glycols to high temperatures, greaterthan 120°F (49°C), will result in productdegradation. Transfer piping of mild steel isgenerally used.

Shipping DataShipping Data for Triethylene GlycolWeight 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

Triethylene Glycol is not regulated by the U.S.Department of Transportation; therefore, it doesnot have a DOT Shipping Name, HazardClassification, DOT Warning Label, orIdentification Number.


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Product SafetyWhen considering the use of triethylene glycol inany particular application, review and understandUnion Carbide’s latest Material Safety Data Sheetfor the necessary safety and health information sothat the use you intend can be accomplishedsafely. For Material Safety Data Sheets and otherproduct safety information on Union Carbideproducts, contact the Union Carbide sales officenearest you. Before handling any other productsmentioned in this booklet, you should obtain theavailable product safety information from thesuppliers of those materials and take the necessarysteps to comply with all precautions for the safeuse of triethylene glycol.

No chemical should be used as or in a food, drug,medical device or cosmetic, or in a productprocess in which it may contact a food, drug,medical device, or cosmetic until the user hasdetermined the suitability and legality of the use.Since government regulations and use conditionsare subject to change, it is the user’s responsibilityto determine that this information is appropriateand suitable under current, applicable laws andregulations.

Union Carbide requests that the customer read,understand, and comply with the informationcontained in this publication and the currentMaterial Data Safety Sheet(s). The customershould furnish the information in this publicationto its employees, contractors, and customers, orany other users of the product(s), and request thatthey do the same.


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Emergency ServiceUnion Carbide maintains an around-the-clock emergency service for its products. The ChemicalManufacturers Association (CHEM/TREC), Transportation Canada (CANUTEC) and the ChemicalEmergency Agency Service maintain an around-the-clock emergency service for all chemical products.

Location Union Carbide Products All Chemical ProductsMainland United States Phone Union Carbide HELP: Phone CHEMTREC:and Puerto Rico (800) UCC-HELP (toll-free), (800) 424-9300 (toll-free)

i.e., (800) 822-4357

Alaska and Hawaii Phone Mainland United States: Phone CHEMTREC:(304) 744-3487(collect) (800) 424-9300 (toll-free)

Canada Phone Union Carbide: Phone CANUTEC:(514)-640-6400 (collect) (613) 996-6666 (collect)

Continental Europe, Phone BIG (Geel-Belgium): Phone CHEMTREC (United States):Middle East, North and (32) 0-14-58-45-45 (703) 527-3887 (collect)Central Africa

United Kingdom and Ireland Phone National Chemical Phone CHEMTREC (United States):Emergency Center (Culham-UK): (703) 527-3887 (collect)(44)(0) 1865-407-333

Latin America, Asia/Pacific, Phone United States: Phone CHEMTREC (United States):South Africa and any other (304) 744-3487 (collect) (703) 527-3887 (collect)location, worldwide

If you are at sea Radio U.S. Coast Guard, who can directly contact Union Carbide HELP (800) 822-4357 (toll-free) or CHEMTREC (800) 424-9300 (toll-free)

DO NOT WAIT. Phone if in doubt. You will be referred to a specialist for advice.

Sales OfficeFor additional information, contact our customer center:

Union Carbide Corporation10235 West Little York RoadSuite 300Houston, TX 77040Phone: 1-800-568-4000 or 1-713-849-7000


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Union Carbide Corporation39 Old Ridgebury RoadDanbury, CT 06817-0001

9/00UC-2165A P0-0319

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