International Chemical Safety Cards CHLORINE TRIFLUORIDE ICSC: 0656 Chlorine fluoride Chlorotrifluoride ClF3 Molecular mass: 92.5 (cylinder) ICSC #    0656 CAS #     7790-91-2 RTECS # FO2800000 UN #        1749 October 09, 1997 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible but enhances combustion of other substances. Gives off highly toxic fumes in a fire. Many reactions may cause fire or explosion. NO contact with flammable substances. NO contact with water. In case of fire in the surroundings: NO hydrous agents. EXPLOSION Risk of fire and explosion on contact with water or with organic material. In case of fire: cool cylinder by spraying with water but avoid contact of the substance with water. Combat fire from a sheltered position. EXPOSURE AVOID ALL CONTACT!  •INHALATION Burning sensation. Cough. Sore throat. Laboured breathing. Shortness of breath. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Half-upright position. Refer for medical attention.  •SKIN Redness. Serious skin burns. Pain. Blisters. Protective gloves. Protective clothing. First rinse with plenty of water, then remove contaminated clothes and rinse again. Refer for medical attention.  •EYES Redness. Pain. Severe deep burns. Permanent loss of vision. Face shield, 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 SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. Stop flow of gas. If leak cannot be stopped in place, remove cylinder in open air and allow to empty. NEVER direct water jet on liquid. (Extra personal protection: complete protective clothing SPECIFICALLY RECOMMENDED AS EFFECTIVE AGAINST ClF3 including self-contained breathing apparatus). Fireproof. Separated from combustible and reducing substances, food and feedstuffs . Cool. Dry. Do not transport with food and feedstuffs and combustible materials. R: S: UN Hazard Class: 2.3 UN Subsidiary Risks: 5.1 and 8 SEE IMPORTANT INFORMATION ON BACK ICSC: 0656 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 CHLORINE TRIFLUORIDE ICSC: 0656 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: NEARLY COLOURLESS COMPRESSED LIQUEFIED GAS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The gas is heavier than air. CHEMICAL DANGERS: The substance decomposes above 220°C producing toxic gases (chlorine and fluorine compounds). Reacts violently with water, glass. Reacts with all forms of plastics, rubber, and resins, except the highly fluorinated polymers. Most combustible materials ignite spontaneously on contact with this substance. Reacts violently with oxidizable materials, metals and metal oxides. Explodes in contact with organic materials. Emits highly toxic fumes on contact with acids. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.1 ppm; 0.38 mg/m3 (as CEILING) (ACGIH 1997). OSHA PEL: C 0.1 ppm (0.4 mg/m3) NIOSH REL: C 0.1 ppm (0.4 mg/m3) NIOSH IDLH: 20 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: A harmful concentration of this gas in the air will be reached very quickly on loss of containment. EFFECTS OF SHORT-TERM EXPOSURE: The substance is corrosive to the eyes, the skin and the respiratory tract. Inhalation of the substance may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated. See Notes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 12°C Melting point: -76°C Solubility in water: reaction Relative vapour density (air = 1): 3.18 ENVIRONMENTAL DATA N O T E S Thorough flushing with an inert gas should precede any opening of apparatus that has contained chlorine trifluoride. Reacts violently with fire extinguishing agents such as water. The occupational exposure limit value should not be exceeded during any part of the working exposure. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. Do NOT spray water on leaking cylinder (to prevent corrosion of cylinder). Also consult ICSC #0283 Hydrogen fluoride. Transport Emergency Card: TEC (R)-20G47 NFPA Code: H4; F0; R3; W,OX ADDITIONAL INFORMATION ICSC: 0656 CHLORINE TRIFLUORIDE (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.