International Chemical Safety Cards MERCURIC SULFATE ICSC: 0982 Mercury(II) sulfate Mercuric bisulfate HgSO4 Molecular mass: 296.7 ICSC #    0982 CAS #     7783-35-9 RTECS # OX0500000 UN #        1645 EC #         080-002-00-6 October 19, 1999 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION EXPOSURE AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing. Weakness. Local exhaust or breathing protection. Fresh air, rest. Half-upright position. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Pain. Burning sensation. Skin burns. Blisters. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. Blurred vision. 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 Abdominal pain. Nausea. Vomiting. Diarrhoea. Metallic taste. Burning sensation. Shock or collapse. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: chemical protection suit including self-contained breathing apparatus). Separated from food and feedstuffs . Dry. Keep in the dark. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. Severe marine pollutant. Note: A T+ symbol N symbol R: 26/27/28-33-50/53 S: 1/2-13-28-45-60-61 UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0982 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 MERCURIC SULFATE ICSC: 0982 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE CRYSTALLINE POWDER. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes under the influence of light and on heating to 450°C producing very toxic fumes of mercury and sulfur oxides . The solution in water is a medium strong acid. Reacts with hydrogen halides. OCCUPATIONAL EXPOSURE LIMITS: TLV (as Hg): ppm; 0.025 mg/m3 (skin, A4) (ACGIH 1999). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. The substance may cause effects on the gastrointestinal tract and kidneys , resulting in tissue lesions and kidney damage. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the kidneys , central nervous system and peripheral nervous system , resulting in ataxia, sensory and memory disturbances, tremors, muscle weakness and kidney impairment. PHYSICAL PROPERTIES Decomposes below melting point at 450°C Density: 6.5 g/cm3 Solubility in water: reaction Auto-ignition temperature: >450°C ENVIRONMENTAL DATA The substance is very toxic to aquatic organisms. In the food chain important to humans, bioaccumulation takes place, specifically in aquatic organisms. The substance may cause long-term effects in the aquatic environment. N O T E S Depending on the degree of exposure, periodic medical examination is indicated. Do NOT take working clothes home. Transport Emergency Card: TEC (R)-61G64b ADDITIONAL INFORMATION ICSC: 0982 MERCURIC SULFATE (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.