ICSC 0199 - TEMEPHOS

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TEMEPHOS	ICSC: 0199 (April 2007)
O,O,O',O'-Tetramethyl O,O'-thiodi-p-phenylene bis(phosphorothioate) O,O'-(Thiodi-4,1-phenylene) bis(O,O-dimethylphosphorothioate) Phosphorothioic acid, O,O'-(thiodi-4,1-phenylene) O,O,O',O'-tetramethyl ester

CAS #: 3383-96-8

UN #: 2783

EC Number: 222-191-1

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use water spray, foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

PREVENT DISPERSION OF DUST! PREVENT GENERATION OF MISTS!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Dizziness. Nausea. Muscle twitching. Sweating. Pupillary constriction, muscle cramp, excessive salivation. Vomiting. Diarrhoea. Laboured breathing. Convulsions. Unconsciousness.	Use ventilation (not if powder), local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	MAY BE ABSORBED! Further see Inhalation.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer immediately for medical attention.
Eyes	Blurred vision.	Wear face shield or eye protection in combination with breathing protection.	Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer for medical attention.
Ingestion	Abdominal cramps. See Inhalation.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER Toxic in contact with skin Harmful if swallowed or if inhaled Causes damage to nervous system Very toxic to aquatic life with long lasting effects Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: III
STORAGE
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Well closed. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs. Marine pollutant.

TEMEPHOS

ICSC: 0199

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS OR WHITE CRYSTALS OR LIQUID. Physical dangers Chemical dangers Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides and sulfur oxides.	Formula: C₁₆H₂₀O₆P₂S₃ Molecular mass: 466.5 Decomposes at 120-125°C Melting point: 30°C Density: 1.3 g/cm³ Solubility in water: none Vapour pressure at 25°C: negligible Octanol/water partition coefficient as log Pow: 5.96

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OR WHITE CRYSTALS OR LIQUID.

Physical dangers

Chemical dangers
Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides and sulfur oxides.

Formula: C₁₆H₂₀O₆P₂S₃
Molecular mass: 466.5
Decomposes at 120-125°C
Melting point: 30°C
Density: 1.3 g/cm³
Solubility in water: none
Vapour pressure at 25°C: negligible
Octanol/water partition coefficient as log Pow: 5.96

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation, through the skin and by ingestion. Effects of short-term exposure Cholinesterase inhibition. The substance may cause effects on the nervous system. This may result in convulsions and respiratory depression. The effects may be delayed. Medical observation is indicated. Exposure far above the OEL could cause death.	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 long-term or repeated exposure Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

Effects of short-term exposure
Cholinesterase inhibition. The substance may cause effects on the nervous system. This may result in convulsions and respiratory depression. The effects may be delayed. Medical observation is indicated. Exposure far above the OEL could cause death.

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 long-term or repeated exposure
Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 1 mg/m³, as TWA; (skin); A4 (not classifiable as a human carcinogen); BEI issued

ENVIRONMENT
The substance is very toxic to aquatic organisms. This substance may be hazardous to the environment. Special attention should be given to bees. Bioaccumulation of this chemical may occur along the food chain. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal.

NOTES
Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Carrier solvents used in commercial formulations may change physical and toxicological properties.

ADDITIONAL INFORMATION

EC Classification

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