International Chemical Safety Cards TRIBUTYL PHOSPHATE ICSC: 0584 Tri-n-butyl phosphate Phosphoric acid, tributyl ester C12H27O4P / (C4H9)3PO4 Molecular mass: 266.3 ICSC #    0584 CAS #     126-73-8 RTECS # TC7700000 EC #         015-014-00-2 October 18, 2005 Validated 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. Water spray, foam, powder, carbon dioxide. EXPLOSION EXPOSURE PREVENT GENERATION OF MISTS!  •INHALATION Cough. Headache. Nausea. Sore throat. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Pain. 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. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: filter respirator for organic gases and vapours. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Do not use plastic containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Store in an area without drain or sewer access. Separated from bases and strong oxidants. Xn symbol R: 22-38-40 S: 2-36/37-46 SEE IMPORTANT INFORMATION ON BACK ICSC: 0584 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 TRIBUTYL PHOSPHATE ICSC: 0584 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS ODOURLESS VISCOUS LIQUID PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic fumes including phosphorus oxides . Reacts with warm water producing corrosive phosphoric acid and butanol. Attacks some forms of plastic, rubberandcoatings. Reacts with bases and strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.2 ppm as TWA; BEI issued; (ACGIH 2005). MAK: 1 ppm as TWA; skin absorption (H); Peak limitation category: II(4); Carcinogen category: 4; Pregnancy risk group: C; (DFG 2005). OSHA PEL†: TWA 5 mg/m3 NIOSH REL: TWA 0.2 ppm (2.5 mg/m3) NIOSH IDLH: 30 ppm See: 126738 ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour, through the skin and 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 ; on spraying or dispersing, however, much faster. EFFECTS OF SHORT-TERM EXPOSURE: The substance is severely irritating to the eyes , the skin and the respiratory tract . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: When ingested the substance may have effects on the bladder , resulting in tissue lesions . PHYSICAL PROPERTIES Boiling point (decomposes): 289°C Melting point: <-80°C Relative density (water = 1): 0.98 Solubility in water: poor Vapour pressure, Pa at 25°C: 0.15 Relative vapour density (air = 1): 9.2 Flash point: 146°C o.c. Auto-ignition temperature: >482°C Octanol/water partition coefficient as log Pow: 4.0 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. N O T E S NFPA Code: H3; F1; R0; ADDITIONAL INFORMATION ICSC: 0584 TRIBUTYL PHOSPHATE (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.