FLUOROSULFONIC ACID ICSC: 0996 Fluorosulfuric acid Fluorosulphuric acid FHO3S Molecular mass: 100.1 ICSC #    0996 CAS #     7789-21-1 RTECS # LP0715000 UN #        1777 EC #         016-018-00-7 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. NO contact with flammable substances. NO water . In case of fire in the surroundings: powder, carbon dioxide, dry sand. Explosion In case of fire: cool drums, etc., by spraying with water but avoid contact of the substance with water. Exposure AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!  •Inhalation Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing. Severe swelling of the throat. 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 Redness. Serious skin burns. Pain. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •Eyes Redness. Pain. Severe deep burns. 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 Sore throat. Burning sensation. Nausea. Vomiting. Abdominal cramps. Shock or collapse. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Do NOT induce vomiting. Refer for medical attention. Spillage Disposal Storage Packaging & Labelling Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT absorb in saw-dust or other combustible absorbents. NEVER direct water jet on liquid. Collect leaking liquid in sealable plastic containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Dry. Well closed. Separated from food and feedstuffs . See Chemical Dangers. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. C symbol R: 20-35 S: 1/2-26-45 UN Hazard Class: 8 UN Packing Group: I FLUOROSULFONIC ACID ICSC: 0996 Important Data Physical State; Appearance: COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. Physical Dangers: Chemical Dangers: Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001). The substance is a strong acid, it reacts violently with bases and is corrosive. Reacts violently with water producing sulfuric acid and hydrogen fluoride (see Notes). Attacks glass in presence of moisture. Occupational Exposure Limits: TLV not established. MAK not established. Routes of Exposure: The substance can be absorbed into the body by inhalation and by ingestion. Inhalation Risk: No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C. Effects of Short-Term Exposure: The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of vapour or aerosols may cause lung oedema (see Notes). Effects of Long-Term or Repeated Exposure: Physical Properties Boiling point: 163°C Melting point: -89°C Relative density (water = 1): 1.7 Solubility in water: reaction Vapour pressure, kPa at 25°C: 0.33 Relative vapour density (air = 1): 3.4 Environmental Data This substance may be hazardous in the environment; special attention should be given to aquatic organisms. N O T E S 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. Occupational exposures to mists and vapours from sulfuric acid are carcinogenic to humans. NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water. Transport Emergency Card: TEC (R)-80GC1-I ADDITIONAL INFORMATION ICSC: 0996 FLUOROSULFONIC ACID (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.