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  • Scientific Committee on Consumer Products

    SCCP

    OPINION ON

    N-PHENYL-P-PHENYLENEDIAMINE

    COLIPA N° A9

    The SCCP adopted this opinion at its 10th plenary of 19 December 2006

  • SCCP/0991/06 OPINION ON N-PHENYL-P-PHENYLENEDIAMINE

    2

    About the Scientific Committees Three independent non-food Scientific Committees provide the Commission with the scientific advice it needs when preparing policy and proposals relating to consumer safety, public health and the environment. The Committees also draw the Commission's attention to the new or emerging problems which may pose an actual or potential threat. They are: the Scientific Committee on Consumer Products (SCCP), the Scientific Committee on Health and Environmental Risks (SCHER) and the Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR) and are made up of external experts. In addition, the Commission relies upon the work of the European Food Safety Authority (EFSA), the European Medicines Evaluation Agency (EMEA), the European Centre for Disease prevention and Control (ECDC) and the European Chemicals Agency (ECHA). SCCP Questions concerning the safety of consumer products (non-food products intended for the consumer). In particular, the Committee addresses questions related to the safety and allergenic properties of cosmetic products and ingredients with respect to their impact on consumer health, toys, textiles, clothing, personal care products, domestic products such as detergents and consumer services such as tattooing. Scientific Committee members Claire M. Chambers, Gisela Degen, Ruta Dubakiene, Ramon Grimalt, Bozena Jazwiec- Kanyion, Vassilios Kapoulas, Jean Krutmann, Carola Lidén, Jean-Paul Marty, Thomas Platzek, Suresh C. Rastogi, Jean Revuz, Vera Rogiers, Tore Sanner, Günter Speit, Jacqueline van Engelen, Ian R. White Contact: European Commission Health & Consumer Protection DG Directorate C: Public Health and Risk Assessment Unit C7 - Risk Assessment Office: B232 B-1049 Brussels Sanco-Sc6-Secretariat@ec.europa.eu © European Commission 2007 The opinions of the Scientific Committees reflect the views of the independent scientists who are members of the committees. They do not necessarily reflect the views of the European Commission. The opinions are published by the European Commission in their original language only. http://ec.europa.eu/health/ph_risk/risk_en.htm

    mailto:Sanco-Sc6-Secretariat@ec.europa.eu http://ec.europa.eu/health/ph_risk/risk_en.htm

  • SCCP/0991/06 OPINION ON N-PHENYL-P-PHENYLENEDIAMINE

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    ACKNOWLEDGEMENTS

    Members of the working group are acknowledged for their valuable contribution to this opinion. The members of the working group are: Dr. C. Chambers Prof. V. Kapoulas Prof. C. Lidén Prof. J.-P. Marty Prof. T. Platzek (chairman) Dr. S.C. Rastogi Prof. T. Sanner Dr. J. van Engelen Dr. I.R. White External experts Dr. M.-L. Binderup National Food Institute, Denmark Dr. H. Norppa Finnish Institute of Occupational Health, Finland Dr. K. Peltonen EVIRA, Finland Dr. J. van Benthem RIVM, the Netherlands (rapporteur)

    Keywords: SCCP, scientific opinion, hair dye, N-Phenyl-p-phenylenediamine, A9, Directive 768/76/EEC, CAS 101-54-2; 2198-59-6; 4698-29-7

    Opinion to be cited as: Scientific Committee on Consumer Products (SCCP), 19 December 2006, Opinion on N- Phenyl-p-phenylenediamine COLIPA N° A9

  • SCCP/0991/06 OPINION ON N-PHENYL-P-PHENYLENEDIAMINE

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    TABLE OF CONTENTS

    ACKNOWLEDGEMENTS.................................................................................... 3

    1. BACKGROUND......................................................................................... 5

    2. TERMS OF REFERENCE ............................................................................. 5

    3. OPINION ................................................................................................ 5

    4. CONCLUSION........................................................................................ 40

    5. MINORITY OPINION ............................................................................... 41

    6. REFERENCES ........................................................................................ 41

  • SCCP/0991/06 OPINION ON N-PHENYL-P-PHENYLENEDIAMINE

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    1. BACKGROUND Submission I of N-Phenyl-p-phenylenediamine (CAS 101-54-2) was submitted in September 2003 by COLIPA1, 2. The substance is currently regulated as an oxidative hair dye by the Cosmetics Directive (76/768/EC), Annex III, part 1 under entry 8 on the List of substances, which cosmetic products must not contain except subject to restrictions and conditions laid down. Submission II was submitted by COLIPA in July 2005. According to this submission N- Phenyl-p-phenylenediamine is used in oxidation hair dyes at a maximum concentration of 0.4%. After mixing in the ratio 1:1 with hydrogen peroxide, the concentration on the head is 0.2%. Submission I should be evaluated together with this submission. Submission II presents updated scientific data on the above mentioned substance in line with the second step of the strategy for the evaluation of hair dyes (http://europa.eu.int/comm/enterprise/cosmetics/doc/hairdyestrategyinternet.pdf) within the framework of the Cosmetics Directive 76/768/EEC. 2. TERMS OF REFERENCE 1. Does the Scientific Committee on Consumer Products (SCCP) consider N-Phenyl-p-

    phenylenediamine safe for use in oxidative hair dye formulations up to a concentration of 0.2% on the head taken into account the scientific data provided?

    2. Does the SCCP recommend any restrictions with regard to the use of N-Phenyl-p-

    phenylenediamine in oxidative hair dye formulations besides the existing labelling requirements for allergic reactions?

    3. OPINION 3.1. Chemical and Physical Specifications 3.1.1. Chemical identity 3.1.1.1. Primary name and/or INCI name N-Phenyl-p-Phenylenediamine 3.1.1.2. Chemical names N-Phenyl-p-Phenylenediamine N-Phenyl-1,4-Benzenediamine 4-Aminodiphenylamine p-Aminodiphenylamine N-Phenyl-1,4-Phenylenediamine p-Anilinoaniline

    1 COLIPA - European Cosmetics Toiletry and Perfumery Association 2 According to records of COLIPA

  • SCCP/0991/06 OPINION ON N-PHENYL-P-PHENYLENEDIAMINE

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    3.1.1.3. Trade names and abbreviations Trade name Rodol Gray B Base (Lowenstein) Rodol Gray BC (for the HCl salt), Rodol Gray BS (for the sulphate salt) COLIPA N° A9 3.1.1.4. CAS / EINECS number CAS: 101-54-2 2198-59-6 (hydrochloride) 4698-29-7 (sulfate) EINECS: 202-951-9 218-599-4 (hydrochloride) 225-173-1 (sulfate) CI number: 37240, 76085 3.1.1.5. Structural formula

    3.1.1.6. Empirical formula Formula: C12H12N2 3.1.2. Physical form Medium to dark grey flakes 3.1.3. Molecular weight Molecular weight: 184.24 3.1.4. Purity, composition and substance codes Purity: > 98% (given as specification) Ash content (600°C): < 0.1% (w/w) Moisture (Karl Fischer): < 0.22% (w/w) Complete analysis and structure characterisation is provided only for Lot No. 217. It was characterised with different techniques, including GC-MS, LC-MS and NMR. These techniques were also used to demonstrate homogeneity and stability. Using GC-MS, it was confirmed to be 99.6% N-phenyl-p-phenylenediamine (NPPD) as a % of total area. The identity was confirmed by spectral confirmation. It was also quantified versus a NPPD Sigma- Aldrich standard by GC-MS. The chemical structure and molecular formula of the test substance was also confirmed to be NPPD by NMR and elemental analysis. All the results of the trace metal analysis were within specification set by the supplier. The results are summarised in the following tables.

    Analytical Results of Lot No. 217 by GC/MS

    Component name % of total area * Rodol Gray B Base 99.61 - 99.54

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    Component name % of total area * Diphenylamine 0.05 - 0.08 Unknown Impurity 1 0.02 - 0.03 Unknown Impurity 2 0.01 - 0.02 Unknown Impurity 3 0.05 - 0.05 Unknown Impurity 4 0.02 - 0.03 MPPD ** 0.17 - 0.16 Unknown Impurity 5 0.02 - 0.02 Unknown Impurity 6 0.05 - 0.08 Total unknown 0.17 - 0.22 Sum 100

    * The second values were found after 6-months storage in the dark at ambient

    temperature. ** MPPD = 2-methoxy-N-4-phenyl-1,4-phenylene diamine

    Results of Compositional Analysis Lot No. 217

    Elemental analysis Carbon (C) 78.13% (w/w) Hydrogen (H) 6.57% (w/w) Nitrogen (N) 15.12% (w/w) Sulphur (S) < 0.3% (w/w) Chlorine (Cl) < 0.3% (w/w)

    3.1.5. Impurities / accompanying contaminants Water content: < 0.2 g/100 g Loss on drying: / Ash: < 0.1 g/100 g Trace metal analysis Arsenic (As): < 2 ppm Iron (Fe): 1 ppm Chromium (Cr): < 1 ppm Cobalt (Co): < 1 ppm Nickel (Ni): < 1 ppm Cadmium (Cd): < 1 ppm Antimony (Sb): < 1 ppm Lead (Pb): < 1 ppm Mercury (Hg): < 0.5 ppm Organic solvents: / Two minor impurities were identified as Diphenylamine (0.05% of total area) and 2- methoxy-N-4-phenyl-1,4-phenylene diamine (MPPD) (0.17% of total area). The NPPD and the two minor impurities were identified with mass spectrometry spectra confirmation versus National Institute of Standar

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