International Chemical Safety Cards para-tert-BUTYLPHENOL ICSC: 0637 4-(1,1-Dimethylethyl)phenol 1-Hydroxy-4-tert-butylbenzene C10H14O / HOC6H4C(CH3)3 Molecular mass: 150.2 ICSC #    0637 CAS #     98-54-4 RTECS # SJ8925000 UN #        2430 October 04, 2000 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Alcohol-resistant foam, powder, carbon dioxide. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE!  •INHALATION Cough. Sore throat. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Pain. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Redness. Pain. Safety goggles, or eye protection in combination with breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Nausea. Vomiting. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Rest. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: A/P2 filter respirator for organic vapour and harmful dust). Do NOT let this chemical enter the environment. Well closed. Marine pollutant. R: S: UN Hazard Class: 8 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0637 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 para-tert-BUTYLPHENOL ICSC: 0637 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE , HYGROSCOPIC FLAKES PHYSICAL DANGERS: CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK: 0.08 ppm; 0.5 mg/m3 (1999) ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol and through the skin. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: The substance is severely irritating to the eyes , the skin , and the respiratory tract . The substance may cause effects on the skin , resulting in depigmentation. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the liver , spleen , thyroid , and nervous system , resulting in impaired functions . PHYSICAL PROPERTIES Boiling point: 237°C Melting point: 98°C Density: 0.9 g/cm3 Solubility in water: none Vapour pressure, Pa at 50°C: 30 Flash point: 115°C o.c. Octanol/water partition coefficient as log Pow: 2.4-3.4 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. In the food chain important to humans, bioaccumulation takes place, specifically in fish . N O T E S Depending on the degree of exposure, periodic medical examination is indicated. Transport Emergency Card: TEC (R)-80G09 ADDITIONAL INFORMATION ICSC: 0637 para-tert-BUTYLPHENOL (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.