International Chemical Safety Cards SULFOTEP ICSC: 0985 Thiodiphosphoric acid tetraethyl ester Ethyl thiopyrophosphate Tetraethyl dithiopyrophosphate (TEDP) C8H20O5P2S2 / (C2H5O)2-P(S)-O-P(S)-(OC2H5)2 Molecular mass: 322.30 ICSC #    0985 CAS #     3689-24-5 RTECS # XN4375000 UN #        1704 EC #         015-027-00-3 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Powder, water spray, foam, carbon dioxide. EXPLOSION Container may explode violently in heat of fire. In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE STRICT HYGIENE! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Blue skin. Dizziness. Drowsiness. Headache. Pupillary constriction, muscle cramp, excessive salivation. Sweating. Laboured breathing. Nausea. Convulsions. Unconsciousness. Weakness. (See Ingestion). Ventilation, local exhaust, or breathing protection. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Sweating and twitching in the area of absorption. (Further see Inhalation). Protective gloves. Protective clothing. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Redness. Pain. Pupillary constriction. 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 cramps. Confusion. Diarrhoea. Vomiting. Loss of appetite. (Further see Inhalation). Do not eat, drink, or smoke during work. Wash hands before eating. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Ventilation. Collect leaking liquid in sealable containers. Absorb remaining liquid in dry sand or inert absorbent and remove to safe place. (Extra personal protection: complete protective clothing including self-contained breathing apparatus). Dry. Well closed. Separated from strong oxidants, food and feedstuffs. Keep in a well-ventilated room. Do not store in metal containers. Do not transport with food and feedstuffs. Marine pollutant. T+ symbol R: 27/28 S: 1/2-23-28-36/37-45 UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0985 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 2000. 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 SULFOTEP ICSC: 0985 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: PALE YELLOW LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating producing highly toxic fumes phosphorous oxides sulfur oxides Reacts with strong oxidants. Attacks iron, some forms of plastic, rubber and coating. OCCUPATIONAL EXPOSURE LIMITS: TLV: ppm; 0.2 mg/m3 (skin A4) (ACGIH 1999). 0.1 mg/m3 skin EC OELs OSHA PEL: TWA 0.2 mg/m3 skin NIOSH REL: TWA 0.2 mg/m3 skin NIOSH IDLH: 10 mg/m3 ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation, through the skin and by ingestion. INHALATION RISK: A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes the skin The substance may cause effects on the nervous system , resulting in convulsion, respiratory failure. Cholinesterase inhibitor. Exposure far above the OEL may result in death. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Cholinesterase inhibitor; cumulative effect is possible: see acute hazards/symptoms. PHYSICAL PROPERTIES Boiling point at 0.2666 kPa: 136-139°C Relative density (water = 1): 1.2 Solubility in water: none Vapour pressure, Pa at 20°C: 0.0226 Octanol/water partition coefficient as log Pow: 3.99 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 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. Technical grade is a dark-coloured liquid, boiling point 131-132°C at 0.267 kPa. Do NOT take working clothes home. ASP 47, Bay-E-393, Bladafum, Dithion, Dithiotep, Dithiofos are trade names. ADDITIONAL INFORMATION ICSC: 0985 SULFOTEP (C) IPCS, CEC, 2000

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