International Chemical Safety Cards N-(1,3-DIMETHYLBUTYL)-N'-PHENYL-p-PHENYLENEDIAMINE ICSC: 1635 N-(4-Methyl-2-pentyl)-N'-phenyl-1,4-diaminobenzene 1,4-Benzenediamine, N-(1,3-dimethylbutyl)-N'-phenyl- p-Phenylenediamine, N-(1,3-dimethylbutyl)-N'-phenyl- 6PPD C18H24N2 Molecular mass: 268.4 ICSC #    1635 CAS #     793-24-8 RTECS # ST1100000 UN #        3077 October 12, 2006 Validated TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Water spray, powder. EXPLOSION EXPOSURE STRICT HYGIENE!  •INHALATION Cough. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Protective clothing. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.  •EYES Redness. Safety goggles First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Do not eat, drink, or smoke during work. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: P2 filter respirator for harmful particles. Protective gloves. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Provision to contain effluent from fire extinguishing. Store in an area without drain or sewer access. Separated from strong oxidants. UN Hazard Class: 9 UN Packing Group: III Signal: Warning Excl mark-Enviro Causes eye irritation Causes mild skin irritation May cause allergic skin reaction Very toxic to aquatic life SEE IMPORTANT INFORMATION ON BACK ICSC: 1635 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards N-(1,3-DIMETHYLBUTYL)-N'-PHENYL-p-PHENYLENEDIAMINE ICSC: 1635 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: BROWN TO VIOLET SOLID IN VARIOUS FORMS . TURNS DARK BROWN ON EXPOSURE TO LIGHT PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic fumes including nitrogen oxides . Reacts with strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by ingestion . INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered . EFFECTS OF SHORT-TERM EXPOSURE: The substance is mildly irritating to the eyes and the skin . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. PHYSICAL PROPERTIES Boiling point: 370°C (calculated) Melting point: 45-48°C Density: 1.02 g/cm³ Solubility in water, g/100 ml at 20°C: 0.01 Vapour pressure, Pa at 25°C: negligible Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Flash point: 200°C c.c. Auto-ignition temperature: about 500°C Octanol/water partition coefficient as log Pow: 5.4 ENVIRONMENTAL DATA The substance is very toxic to aquatic organisms. It is strongly advised that this substance does not enter the environment. N O T E S Do NOT take working clothes home. Transport Emergency Card: TEC (R)-90GM7-III ADDITIONAL INFORMATION ICSC: 1635 N-(1,3-DIMETHYLBUTYL)-N'-PHENYL-p-PHENYLENEDIAMINE (C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.