International Chemical Safety Cards ALLYL ISOTHIOCYANATE ICSC: 0372 Allyl isosulfocyanate 2-Propenyl isothiocyanate 3-Isothiocyanato-1-propene C4H5NS / CH2=CHCH2N=C=S Molecular mass: 99.2 ICSC #    0372 CAS #     57-06-7 RTECS # NX8225000 UN #        1545 (inhibited) October 07, 1997 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Flammable. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames, NO sparks, and NO smoking. Powder, AFFF, foam, carbon dioxide. EXPLOSION Above 46°C explosive vapour/air mixtures may be formed. Above 46°C use a closed system, ventilation, and explosion-proof electrical equipment. In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE PREVENT GENERATION OF MISTS! STRICT HYGIENE!  •INHALATION Cough. Sore throat. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Pain. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. 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 Sore throat. Burning sensation. Do not eat, drink, or smoke during work. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Ventilation. 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: complete protective clothing including self-contained breathing apparatus. Fireproof. Separated from strong oxidants, acids, food and feedstuffs . Well closed. Store only if stabilized. Do not transport with food and feedstuffs. R: S: UN Hazard Class: 6.1 UN Subsidiary Risks: 3 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0372 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 ALLYL ISOTHIOCYANATE ICSC: 0372 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS TO PALE YELLOW, OILY LIQUID , WITH PUNGENT ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating, on burning or on contact with acids producing highly toxic fumes including nitrogen oxides or sulfur oxides . Reacts with strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour, through the skin 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: Tear drawing. The substance is irritating to the eyes , the skin and the respiratory tract . 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, kidneys stomach, thyroid and bladder. PHYSICAL PROPERTIES Boiling point: 148-154°C Melting point: -102.5°C Relative density (water = 1): 1.0 Solubility in water: poor Vapour pressure, kPa at 20°C: 0.493 Relative vapour density (air = 1): 3.4 Flash point: 46°C c.c. Octanol/water partition coefficient as log Pow: 2.11 ENVIRONMENTAL DATA N O T E S An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Mustard oil is a commonly used name. Transport Emergency Card: TEC (R)-61G61b NFPA Code: H3; F2; R0; ADDITIONAL INFORMATION ICSC: 0372 ALLYL ISOTHIOCYANATE (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.