International Chemical Safety Cards SULFUR TETRAFLUORIDE ICSC: 1456 Tetrafluorosulfurane F4S Molecular mass: 108.06 (cylinder) ICSC #    1456 CAS #     7783-60-0 RTECS # WT4800000 UN #        2418 May 08, 2003 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Gives off irritating or toxic fumes (or gases) in a fire. Not combustible. NO water. In case of fire in the surroundings: use appropriate extinguishing media. EXPLOSION In case of fire: cool cylinder by spraying with water but avoid contact of the substance with water. EXPOSURE AVOID ALL CONTACT!  •INHALATION Burning sensation. Cough. Sore throat. Headache. Nausea. Vomiting. Shortness of breath. Laboured breathing. Symptoms may be delayed (see Notes). Ventilation, local exhaust, or breathing protection. Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.  •SKIN Pain. Redness. Skin burns. ON CONTACT WITH LIQUID: FROSTBITE. Cold-insulating gloves. Protective clothing. ON FROSTBITE: do NOT remove clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. Blurred vision. Severe deep burns. ON CONTACT WITH LIQUID: FROSTBITE. Safety goggles, 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 Do not eat, drink, or smoke during work. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus. Keep in a well-ventilated room. Fireproof if in building. Cool. Dry. R: S: UN Hazard Class: 2.3 UN Subsidiary Risks: 8 SEE IMPORTANT INFORMATION ON BACK ICSC: 1456 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 SULFUR TETRAFLUORIDE ICSC: 1456 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS GAS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The gas is heavier than air. CHEMICAL DANGERS: Reacts violently with water and acids to produce toxic and corrosive fumes . Attacks glass and metal. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.1 ppm (Ceiling value); (ACGIH 2003). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: On loss of containment, a harmful concentration of this gas in the air will be reached very quickly. EFFECTS OF SHORT-TERM EXPOSURE: The substance is corrosive to the eyes , the skin and the respiratory tract. The liquid may cause frostbite. Inhalation of this gas may cause lung oedema (see Notes). EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the bones and teeth , resulting in fluorosis. PHYSICAL PROPERTIES Boiling point: -40°C Melting point: -124°C Solubility in water: reaction Relative vapour density (air = 1): 3.78 ENVIRONMENTAL DATA N O T E S 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. Transport Emergency Card: TEC (R)-20G2TC NFPA Code: H3; F0; R; ADDITIONAL INFORMATION ICSC: 1456 SULFUR TETRAFLUORIDE (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.