International Chemical Safety Cards 4-METHOXY-4-METHYL-2-PENTANONE ICSC: 1098 4-Methoxy-4-methylpentan-2-one 4-Methyl-4-methoxy-2-pentanone 4-Methoxy-4-methylpentanone-2 C7H14O2 Molecular mass: 130.2 ICSC #    1098 CAS #     107-70-0 RTECS # SA9185000 UN #        2293 EC #         606-023-00-8 April 21, 2004 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Flammable. NO open flames, NO sparks, and NO smoking. Powder, alcohol-resistant foam, water spray, carbon dioxide . EXPLOSION Above 60°C explosive vapour/air mixtures may be formed. Above 60°C use a closed system, ventilation, and explosion-proof electrical equipment. In case of fire: keep cylinder cool by spraying with water. EXPOSURE  •INHALATION Cough. Sore throat. Ventilation, local exhaust, or breathing protection. Fresh air, rest.  •SKIN Redness. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Redness. Pain. Safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Remove all ignition sources. Collect leaking and spilled liquid in sealable containers as far as possible. Personal protection: filter respirator for organic gases and vapours. Fireproof. Separated from strong oxidants. Xn symbol R: 10-20 S: 2-23-24/25 UN Hazard Class: 3 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1098 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 4-METHOXY-4-METHYL-2-PENTANONE ICSC: 1098 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID. PHYSICAL DANGERS: CHEMICAL DANGERS: Reacts with oxidants. The substance decomposes on burning producing toxic fumes and irritating fumes . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation 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 irritating to the eyes , the respiratory tract and the skin . If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 160°C Melting point: -30°C Relative density (water = 1): 0.89 Solubility in water, g/100 ml at 25°C: 28 Vapour pressure, kPa at 25°C: 0.42 Relative vapour density (air = 1): 4.49 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01 Flash point: 60°C c.c. Auto-ignition temperature: 400°C Octanol/water partition coefficient as log Pow: 0.36 ENVIRONMENTAL DATA N O T E S Card has been partly updated in April 2005. See section Physical properties. Transport Emergency Card: TEC (R)-30GF1-III or 30S2293 ADDITIONAL INFORMATION ICSC: 1098 4-METHOXY-4-METHYL-2-PENTANONE (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.