International Chemical Safety Cards PERCHLORYL FLUORIDE ICSC: 1114 Chlorine oxyfluoride Chlorine fluoride oxide Trioxychlorofluoride ClFO3 Molecular mass: 102.45 ICSC #    1114 CAS #     7616-94-6 RTECS # SD1925000 UN #        3083 October 19, 1999 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 irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION In case of fire: keep cylinder cool by spraying with water. EXPOSURE STRICT HYGIENE!  •INHALATION 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 ON CONTACT WITH LIQUID: FROSTBITE. Cold-insulating gloves. Protective clothing. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.  •EYES Safety goggles, 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 Do not eat, drink, or smoke during work. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. NEVER direct water jet on liquid. (Extra personal protection: complete protective clothing including self-contained breathing apparatus). Fireproof if in building. R: S: UN Hazard Class: 2.3 UN Subsidiary Risks: 5.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 1114 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 PERCHLORYL FLUORIDE ICSC: 1114 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS GAS OR COMPRESSED LIQUEFIED GAS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance is a strong oxidant and reacts violently with combustible and reducing materials, with risks of fire and explosion hazard. Reacts violently with nitrogenous bases and finely divided organic materials, causing fire and explosion hazard. Attacks some forms of plastics, rubber and coatings. OCCUPATIONAL EXPOSURE LIMITS: TLV: 3 ppm as TWA; 6 ppm as STEL (ACGIH 1999). OSHA PEL: TWA 3 ppm (13.5 mg/m3) NIOSH REL: TWA 3 ppm (14 mg/m3) ST 6 ppm (28 mg/m3) NIOSH IDLH: 100 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 irritates the respiratory tract. Inhalation of this gas may cause lung oedema (see Notes). Inhalation of high concentrations may cause formation of methaemoglobin. The liquid may cause frostbite. Medical observation is indicated. The effects may be delayed. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the blood , resulting in formation of methaemoglobin. The substance may cause fluorosis (see Notes). PHYSICAL PROPERTIES Boiling point: -46.7°C Melting point: -147.7°C Relative density (water = 1): 1.4 (liquid) Solubility in water, g/100 ml at 20°C: 0.06 ENVIRONMENTAL DATA N O T E S Depending on the degree of exposure, periodic medical examination is indicated. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. 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. Transport Emergency Card: TEC (R)-20G45 ADDITIONAL INFORMATION ICSC: 1114 PERCHLORYL FLUORIDE (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.