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FENCHLORPHOSICSC: 0975
October 1995
CAS #: 299-84-3O,O-Dimethyl-O-(2,4,5-trichlorophenyl) phosphorothioate
Ronnel
EINECS #: 206-082-6

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Dizziness. Sweating. Laboured breathing. Unconsciousness. Vomiting. Pupillary constriction, muscle cramp, excessive salivation.  Avoid inhalation of dust and mist. Use ventilation (not if powder), local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED!  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes   Wear face shield or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal cramps. Diarrhoea. Nausea. Vomiting. Pupillary constriction. Muscle cramps. Excessive salivation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT wash away into sewer. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants and food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
FENCHLORPHOS ICSC: 0975
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE POWDER. 

Physical dangers
No data. 

Chemical dangers
Decomposes on heating. This produces toxic fumes including hydrogen chloride, phosphorus oxides and sulfur oxides. 

Formula: (CH3O)2PSOC6H2Cl3 / C8H8Cl3O3PS
Molecular mass: 321.5
Melting point: 41°C
Relative density (water = 1): 1.48
Solubility in water at 20°C: none
Vapour pressure, Pa at 25°C: <10
Octanol/water partition coefficient as log Pow: 4.88  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance may cause effects on the nervous system. This may result in convulsions. Cholinesterase inhibition. The effects may be delayed. Medical observation is indicated. 

Inhalation risk
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
Animal tests show that this substance possibly causes malformations in human babies. 


Occupational exposure limits
TLV: 5 mg/m3, ppm, as TWA; A4 (not classifiable as a human carcinogen); BEI issued 

ENVIRONMENT
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish. Avoid release to the environment in circumstances different to normal use. 

NOTES
Temperature of decomposition is unknown in the literature.
Depending on the degree of exposure, periodic medical examination is suggested.
Carrier solvents used in commercial formulations may change physical and toxicological properties.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn, N; R: 21/22-50/53; S: (2)-25-36/37-60-61 

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    See Also:
       Toxicological Abbreviations
       Fenchlorphos (FAO/PL:1968/M/9/1)
       Fenchlorphos (Pesticide residues in food: 1983 evaluations)