International Chemical Safety Cards DIBUTYLTIN DILAURATE ICSC: 1171 Dibutylbis((1-oxododecyl)-oxy) stannane Dibutylbis(lauroyloxy)tin (C4H9)2Sn(OOC(CH2)10CH3)2/C32H64O4Sn Molecular mass: 631.6 ICSC #    1171 CAS #     77-58-7 RTECS # WH7000000 UN #        2788; 3146 October 23, 1995 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Powder, alcohol-resistant foam, water spray, carbon dioxide. EXPLOSION EXPOSURE STRICT HYGIENE!  •INHALATION Ventilation. Fresh air, rest.  •SKIN Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.  •EYES Redness. Safety spectacles. 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. Wash hands before eating. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Collect leaking liquid in sealable containers. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: self-contained breathing apparatus). Separated from food and feedstuffs. Ventilation along the floor. Do not transport with food and feedstuffs. R: S: UN Hazard Class: 6.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 1171 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 DIBUTYLTIN DILAURATE ICSC: 1171 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: YELLOW OILY LIQUID OR WAXY CRYSTALS. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating or on burning producing toxic and irritating fumes. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by ingestion. INHALATION RISK: A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the liver, kidneys and gastrointestinal tract. PHYSICAL PROPERTIES Boiling point at 1.3 kPa: 205°C Melting point: 22-24°C Relative density (water = 1): 1.1 Solubility in water: none Relative vapour density (air = 1): 21.8 Flash point: 179°C c.c. 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. Butinorate, Davainex and Tinostat are trade names. ADDITIONAL INFORMATION ICSC: 1171 DIBUTYLTIN DILAURATE (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.