International Chemical Safety Cards 1-DECANETHIOL ICSC: 0035 Decyl mercaptan C10H21SH Molecular mass: 174.3 ICSC #    0035 CAS #     143-10-2 RTECS # April 23, 2004 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames, NO sparks, and NO smoking. Foam, carbon dioxide, powder . EXPLOSION Above 98°C explosive vapour/air mixtures may be formed. Above 98°C use a closed system, ventilation, and explosion-proof electrical equipment. EXPOSURE  •INHALATION Dizziness. Headache. Nausea. Ventilation, local exhaust, or breathing protection. Fresh air, rest.  •SKIN Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.  •EYES Severe deep burns. 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. Dizziness. Drowsiness. Headache. Weakness. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Personal protection: filter respirator for organic gases and vapours. Separated from strong oxidants, strong bases. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 0035 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 1-DECANETHIOL ICSC: 0035 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic gases including sulfur dioxide (see ICSC 0074). Reacts with strong bases and strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. OSHA PEL: none NIOSH REL: C 0.5 ppm (3.6 mg/m3) 15-minute NIOSH IDLH: No data ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol, and by ingestion. INHALATION RISK: No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance is corrosive to the eyes. The substance may cause effects on the central nervous system. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 241°C Melting point: -26°C Relative density (water = 1): 0.84 Solubility in water: none Vapour pressure, Pa at 20°C: <10 Relative vapour density (air = 1): 6.0 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Flash point: 98°C ENVIRONMENTAL DATA N O T E S NFPA Code: H2; F2; R0; ADDITIONAL INFORMATION ICSC: 0035 1-DECANETHIOL (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.