International Chemical Safety Cards 2-TERT-BUTYLPHENOL ICSC: 1549 o-tert-Butylphenol 2-(1,1-Dimethylethyl)phenol 2-tert-Butyl-1-hydroxybenzene C10H14O / (CH3)3CC6H4OH Molecular mass: 150.2 ICSC #    1549 CAS #     88-18-6 RTECS # SJ8921000 UN #        3145 October 28, 2004 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, carbon dioxide, foam. EXPLOSION Above 80°C explosive vapour/air mixtures may be formed. Above 80°C use a closed system, ventilation. EXPOSURE PREVENT GENERATION OF MISTS! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Cough. Sore throat. Shortness of breath. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Half-upright position. Refer for medical attention.  •SKIN Redness. Pain. Burning sensation. Skin burns. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. Severe deep burns. Face shield, 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 Burning sensation in the throat and chest. Abdominal pain. Shock or collapse. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Do NOT induce vomiting. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: chemical protection suit including self-contained breathing apparatus. Collect leaking liquid in sealable plastic containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. Separated from strong oxidants, strong bases, acid anhydrides , acid chlorides , metals , food and feedstuffs . Do not transport with food and feedstuffs. Marine pollutant. R: S: UN Hazard Class: 8 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1549 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 2-TERT-BUTYLPHENOL ICSC: 1549 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESSTO YELLOW LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The vapour is heavier than air CHEMICAL DANGERS: Reacts violently with strong oxidants, bases,acid anhydrides andacid chlorides. Attacks copper and its alloys. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation, through the skin and by ingestion. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying. EFFECTS OF SHORT-TERM EXPOSURE: The substance is corrosive to the skin and the eyes. The vapour is irritating to the respiratory tract . Corrosive on ingestion. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 223°C Melting point: -6.8°C Relative density (water = 1): 0.98 Solubility in water, g/100 ml at 20°C: 0.2 poor ( ) Vapour pressure, Pa at 20°C: 5 Relative vapour density (air = 1): 5.2 Flash point: 80°C c.c. Auto-ignition temperature: 335°C Octanol/water partition coefficient as log Pow: 3.3 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. N O T E S ADDITIONAL INFORMATION ICSC: 1549 2-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.