International Chemical Safety Cards DIISOPROPYLBENZENE (mixture) ICSC: 1714 Benzene, bis(1-methylethyl) Bis(1-methylethyl)benzene C12 H18 Molecular mass: 162.3 ICSC #    1714 CAS #     25321-09-9 RTECS # CZ6330000 UN #        3082 April 09, 2008 Validated TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, carbon dioxide . EXPLOSION Above 77°C explosive vapour/air mixtures may be formed. Above 77°C use a closed system, ventilation. In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE PREVENT GENERATION OF MISTS!  •INHALATION Headache. Drowsiness. Ventilation. Fresh air, rest.  •SKIN Protective gloves. Rinse and then wash skin with water and soap.  •EYES Safety spectacles Rinse with plenty of water (remove contact lenses if easily possible).  •INGESTION Do not eat, drink, or smoke during work. Rinse mouth. Rest. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Remove all ignition sources. Ventilation. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment. Provision to contain effluent from fire extinguishing. Keep in a well-ventilated room. Store in an area without drain or sewer access. UN Hazard Class: 9 UN Packing Group: III Signal: Warning Excl mark-Enviro Combustible liquid May cause drowsiness or dizziness Very toxic to aquatic life SEE IMPORTANT INFORMATION ON BACK ICSC: 1714 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 DIISOPROPYLBENZENE (mixture) ICSC: 1714 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID , WITH PUNGENT ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: INHALATION RISK: No indication can be given about the rate in which a harmful concentration of this substance in the air is reached. EFFECTS OF SHORT-TERM EXPOSURE: Exposure at high levels could cause lowering of consciousness. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 203-205°C Density: 0.9 g/cm³ Solubility in water: poor at 25°C Relative vapour density (air = 1): 5.6 Relative density of the vapour/air-mixture at 20°C (air = 1): 1 Flash point: 77°C o.c. Auto-ignition temperature: 449°C Octanol/water partition coefficient as log Pow: 5.2 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 This card is based on a mixture of m-diisopropylbenzene (CAS # 99-62-7) and p-diisopropylbenzene (CAS # 100-18-5). Transport Emergency Card: TEC (R)-90GM6-III NFPA Code: H1; F2; R0; ADDITIONAL INFORMATION ICSC: 1714 DIISOPROPYLBENZENE (mixture) (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.