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PHOSALONE ICSC: 0797
Date of peer-review: October 1995

S-6-chloro-2,3-dihydro-2-oxobenzoxazol-3-ylmethyl O,O-diethyl phosphorodithioate
Benzphos
CAS # 2310-17-0 C12H15ClN4PS2
RTECS # TD5175000 Molecular mass: 367.8
UN # 2783
EC # 015-067-00-1
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Water spray, powder.
EXPLOSION


EXPOSURE
STRICT HYGIENE!

Inhalation Cough.
Avoid inhalation of fine dust and mist. Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin MAY BE ABSORBED! Redness.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes Redness.
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
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. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: complete protective clothing including self-contained breathing apparatus).
Do not transport with food and feedstuffs. Severe marine pollutant.
EU Classification
Symbol: T, N
R: 21-25-50/53
S: (1/2-)36/37-45-60-61
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61G41c
Separated from strong bases, strong acids, food and feedstuffs. Well closed. Keep in a well-ventilated room.
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 2001

SEE IMPORTANT INFORMATION ON BACK


PHOSALONE ICSC: 0797
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS OR WHITE CRYSTALS, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes of hydrogen chloride, nitrogen oxides, phosphorous oxides and sulfur oxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
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 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 SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract. Weak cholinesterase inhibitor. Medical observation is indicated.

PHYSICAL PROPERTIES
Melting point: 47.5-48°C
Relative density (water = 1): 1.39
Solubility in water, g/100 ml: none
Vapour pressure, Pa at °C: negligible
Octanol/water partition coefficient as log Pow: 4.3
ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms. Avoid release to the environment in circumstances different to normal use.
NOTES
Carrier solvents used in commercial formulations may change physical and toxicological properties. Do NOT take working clothes home. Rubitox, Zolone, Azofene are trade names.
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 2001


    See Also:
       Toxicological Abbreviations
       Phosalone (WHO Pesticide Residues Series 2)
       Phosalone (WHO Pesticide Residues Series 5)
       Phosalone (Pesticide residues in food: 1976 evaluations)
       Phosalone (Pesticide residues in food: 1993 evaluations Part II Toxicology)
       Phosalone (Pesticide residues in food: 1997 evaluations Part II Toxicological & Environmental)
       Phosalone (JMPR Evaluations 2001 Part II Toxicological)