International Chemical Safety Cards BROMOACETONE ICSC: 1074 Bromo-2-propanone Acetyl methyl bromide C3H5BrO Molecular mass: 137.0 ICSC #    1074 CAS #     598-31-2 RTECS # UC0525000 UN #        1569 April 22, 2005 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. Water spray, powder. EXPLOSION EXPOSURE  •INHALATION Burning sensation. Cough. Sore throat. Laboured breathing. Local exhaust or breathing protection. Fresh air, rest. Half-upright position. Refer for medical attention.  •SKIN Redness. Pain. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Causes watering of the eyes. Redness. Pain. Blurred vision. 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 Abdominal pain. Burning sensation in the throat and chest. Cough. Diarrhoea. Nausea. Vomiting. 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 Evacuate danger area! Personal protection: complete protective clothing including self-contained breathing apparatus. Collect leaking liquid in sealable containers. Wash away remainder with plenty of water. Separated from strong oxidants, food and feedstuffs. Well closed. Keep in a well-ventilated room. 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: 1074 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 BROMOACETONE ICSC: 1074 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID . TURNS VIOLET ON EXPOSURE TO LIGHT. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic fumes including hydrogen bromide . Reacts with oxidants. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour 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: Lachrymation. The substance is severely irritating to the eyes , the skin and the respiratory tract . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: See Notes. PHYSICAL PROPERTIES Boiling point: 137°C Melting point: -36.5°C Relative density (water = 1): 1.63 Solubility in water: poor Vapour pressure, kPa at 20°C: 1.1 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.04 Flash point: 51.1°C Octanol/water partition coefficient as log Pow: 0.11 ENVIRONMENTAL DATA N O T E S Health effects of exposure to the substance have not been investigated adequately. Transport Emergency Card: TEC (R)-61GTF1-II ADDITIONAL INFORMATION ICSC: 1074 BROMOACETONE (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.