International Chemical Safety Cards PHORONE ICSC: 1157 2,6-Dimethyl-2,5-heptadien-4-one Diisopropylidene acetone C9H14O / (CH3)2C=CHCOCH=C(CH3)2 Molecular mass: 138.2 ICSC #    1157 CAS #     504-20-1 RTECS # MI5500000 March 28, 1996 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, AFFF, foam, carbon dioxide. EXPLOSION Above 85°C explosive vapour/air mixtures may be formed. Above 85°C use a closed system, ventilation. EXPOSURE  •INHALATION Cough. Shortness of breath. Sore throat. Avoid inhalation of fine dust and mist. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN Redness. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Redness. Pain. Safety spectacles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Abdominal pain. Nausea. Do not eat, drink, or smoke during work. Rinse mouth. 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. If material is in solid form, sweep spilled substance into containers, carefully collect remainder, then remove to safe place. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1157 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 PHORONE ICSC: 1157 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: YELLOW TO GREEN LIQUID OR CRYSTALS. PHYSICAL DANGERS: CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. 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: See Notes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: See Notes. PHYSICAL PROPERTIES Boiling point: 198°C Melting point: 28°C Relative density (water = 1): 0.9 Solubility in water: poor Vapour pressure, Pa at 20°C: 51 Relative vapour density (air = 1): 4.8 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Flash point: 85°C o.c. Explosive limits, vol% in air: 0.8-3.8 ENVIRONMENTAL DATA N O T E S Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. No primary references were found. The relation between odour and the occupational exposure limit cannot be indicated. NFPA Code: H2; F2; R0; ADDITIONAL INFORMATION ICSC: 1157 PHORONE (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.