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FENCHLORPHOS ICSC: 0975
Date of Peer Review: October 1995

O,O-Dimethyl-O-(2,4,5-trichlorophenyl) phosphorothioate
Ronnel
CAS # 299-84-3 (CH3O)2PSOC6H2Cl3 / C8H8Cl3O3PS
RTECS # TG0525000 Molecular mass: 321.5
UN #
EC Index # 015-052-00-X
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE 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.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!

Inhalation Dizziness. Sweating. Laboured breathing. Unconsciousness. Vomiting. Pupillary constriction, muscle cramp, excessive salivation.
Avoid inhalation of fine dust and mist. 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
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 take to a doctor.
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 PACKAGING & LABELLING
Do NOT wash away into sewer. 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 remove to safe place. Personal protection: P2 filter respirator for harmful particles.
Do not transport with food and feedstuffs.
EU Classification
Symbol: Xn, N
R: 21/22-50/53
S: (2-)-25-36/37-60-61
UN Classification

EMERGENCY RESPONSE STORAGE

Separated from strong oxidants, food and feedstuffs.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
FENCHLORPHOS ICSC: 0975
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
WHITE POWDER.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes including hydrogen chloride phosphorus oxides and sulfur oxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 mg/m as TWA; A4 (not classifiable as a human carcinogen); BEI issued; (ACGIH 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance may cause effects on the nervous system, resulting in convulsions. Cholinesterase inhibitor. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Animal tests show that this substance possibly causes malformations in human babies.
PHYSICAL PROPERTIES
Melting point: 41C
Relative density (water = 1): 1.48
Solubility in water, g/100 ml at 20C: none
Vapour pressure, Pa at 25C: <10
Octanol/water partition coefficient as log Pow: 4.88
ENVIRONMENTAL DATA
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 unknown in 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. Ectoral, Trolene, Viozene, Nankor and Korlan are trade names. Card has been partly updated in October 2004 and 2005. See sections Occupational Exposure Limits, EU classification.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005