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TerbufosICSC: 1768
June 2015
CAS #: 13071-79-9S-[[(1,1-dimethylethyl) thio] methyl]O,O-diethyl phosphorodithioate
S-ter-butylthiomethyl O,O-diethylphosphorodithioate
UN #: 2783
EINECS #: 235-963-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.    NO open flames.    In case of fire in the surroundings: all extinguishing agents allowed.   

 AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN! STRICT HYGIENE! FIRST AID: USE PERSONAL PROTECTION. IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation See Ingestion.  Avoid inhalation of aerosol.  Fresh air, rest. Refer immediately for medical attention. 
Skin EASILY ABSORBED! See Ingestion.  Protective clothing. Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer immediately for medical attention. 
Eyes   Wear face shield.  Rinse with plenty of water (remove contact lenses if easily possible). Refer for medical attention. 
Ingestion Blurred vision. Headache. Dizziness. Muscle spasms. Weakness. Vomiting. Diarrhoea. Abdominal pain.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Refer immediately for medical attention. Give a slurry of activated charcoal in water to drink. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking liquid in covered containers. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

skull;toxiccancer;health hazenviro;aqua
DANGER
Fatal if swallowed, in contact with skin or if inhaled
May cause damage to the nervous system
May cause damage to nervous system through prolonged or repeated exposure
Very toxic to aquatic life with long lasting effects 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: I 

STORAGE
Separated from food and feedstuffs and oxidizing materials. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
Do not transport with food and feedstuffs. 
Terbufos ICSC: 1768
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-PALE-YELLOW LIQUID. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on burning. This produces highly flammable and toxic gases (phosphine see ICSC 0694). Reacts with oxidizing substances. This produces toxic fumes including phosphorous oxides. 

Formula: C9H21O2PS3
Molecular mass: 288.5
Melting point: -29.2°C
Boiling point: 68.9°C
Flash point: 87.8°C
Solubility in water, mg/l at 25°C: 5.07 (very poor)
Relative density (water = 1): 1.1
Vapour pressure, Pa at 25°C: 0.04
Relative density of the vapour/air-mixture at °C (air = 1): 1.00
Octanol/water partition coefficient as log Pow: 4.48  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
Cholinesterase inhibition. The substance may cause effects on nervous system. This may result in central nervous system disorders. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying. 

Effects of long-term or repeated exposure
The substance may have effects on the nervous system. 


Occupational exposure limits
TLV: 0.01 mg/m3, ppm, as TWA; (skin); A4 (not classifiable as a human carcinogen); BEI issued 

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. Bioaccumulation of this chemical may occur in aquatic organisms. 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.
If the substance is formulated with solvents also consult the ICSCs of these materials.
Carrier solvents used in commercial formulations may change physical and toxicological properties.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations
       Terbufos (JMPR Evaluations 2003 Part II Toxicological)
       Terbufos (Pesticide residues in food: 1990 evaluations Toxicology)