International Chemical Safety Cards TETRADIFON ICSC: 0747 4-Chlorophenyl 2,4,5-trichlorophenyl sulfone 1,2,4-Trichloro-5-((4-chlorophenyl)sulfonyl)-benzene 2,4,4',5-Tetrachlorodiphenyl sulfone C12H6Cl4O2S / (C6H2Cl3)OSO(C6H4Cl) Molecular mass: 356 ICSC #    0747 CAS #     116-29-0 RTECS # WR5850000 April 08, 1997 Peer reviewe TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire. Alcohol-resistant foam, powder, carbon dioxide. EXPLOSION Risk of fire and explosion if formulations contain flammable/explosive solvents. EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Ventilation.  •SKIN Protective gloves. Rinse skin with plenty of water or shower.  •EYES Redness. Safety spectacles. 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. Wash hands before eating. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Do NOT wash away into sewer. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Do not transport with food and feedstuffs. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 0747 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 TETRADIFON ICSC: 0747 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS CRYSTALS. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating and on burning producing toxic fumes including sulfur oxides, hydrogen chloride. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of dust. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the kidneys and liver. PHYSICAL PROPERTIES Melting point: 148-149°C Relative density (water = 1): 1.5 Solubility in water, g/100 ml at 20°C: none Vapour pressure, Pa at 20°C: <0.001 Octanol/water partition coefficient as log Pow: 4.6 ENVIRONMENTAL DATA The substance is very toxic to aquatic organisms. Avoid release to the environment in circumstances different to normal use. N O T E S If the substance is formulated with solvent(s) also consult the card(s) (ICSC) of the solvent(s). Carrier solvents used in commercial formulations may change physical and toxicological properties. Acaroil TD, Acarvin, Agrex T-7.5, Akaritox, Aracnol K, Aredion, Mitifon, Mition, Polacaritox, Roztoczol, Roztozol, Tedion V-18, Tetradichlone, Tetranol V18 are trade names. ADDITIONAL INFORMATION ICSC: 0747 TETRADIFON (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.