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PHOSALONE
ICSC: 0797
Peer-Review Status: 12.11.2010 Validated
S-(6-chloro-2,3-dihydro-2-oxobenzoxazol-3-ylmethyl) O,O-diethyl phosphorodithioate
Benzphos 
CAS #: 2310-17-0 RTECS #: TD5175000
UN #: 2783
EC #: 015-067-00-1
EINECS #: 218-996-2
    Formula: C12H15ClNO4PS2
Molecular mass: 367.8

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Liquid formulations containing organic solvents may be flammable. Gives off corrosive and toxic fumes (or gases) in a fire.  NO open flames.  Use water spray, powder. 
EXPLOSION      
 
EXPOSURE   PREVENT DISPERSION OF DUST!   
Inhalation Dizziness. Nausea. Muscle twitching. Sweating. Pupillary constriction, muscle cramp, excessive salivation. Vomiting. Diarrhoea. Laboured breathing. Convulsions. Cough. Blurred vision. Unconciousness.  Avoid inhalation of dust and mist. Use local exhaust or breathing protection.  Refer immediately for medical attention. 
Skin Redness. 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 Redness.  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 See Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Refer immediately for medical attention. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs.
Severe marine pollutant. 
EC 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 
GHS Classification
Signal: Danger
Toxic if swallowed or in contact with skin
Harmful if inhaled
May cause an allergic skin reaction
Very toxic to aquatic life 
skull;toxicenviro;aqua

EMERGENCY RESPONSE SAFE STORAGE
  Separated from food and feedstuffs. Well closed. Keep in a well-ventilated room. Provision to contain effluent from fire extinguishing. Store in an area without drain or sewer access. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS OR WHITE CRYSTALS WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

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

Occupational exposure limits
TLV (NOT-ESTABLISHED):.
MAK (not established):. 

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

Inhalation risk
A harmful concentration of airborne particles can be reached quickly. 

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 could cause death. The substance is mildly irritating to the eyes and skin. 

Effects of long-term or repeated exposure
Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms. Repeated or prolonged contact may cause skin sensitization. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Melting point: 47.5-48°C
Density: 1.4 g/cm³
Solubility in water, g/100ml at 25°C: 0.0003 (very poor)
Vapour pressure at 25°C: negligible
Octanol/water partition coefficient as log Pow: 4.3
Flash point: 100°C c.c. 
The substance is very toxic to 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. Bioaccumulation of this chemical may occur along the food chain. 

NOTES
Carrier solvents used in commercial formulations may change physical and toxicological properties.
Do NOT take working clothes home.
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. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    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)