Product Name

  • Name

    Phosmet

  • EINECS 211-987-4
  • CAS No. 732-11-6
  • Density 1.473g/cm3
  • Solubility 25 mg l-1 (25°C)
  • Melting Point 72.5 ºC
  • Formula C11H12 N O4 P S2
  • Boiling Point 412.6oC at 760 mmHg
  • Molecular Weight 317.326
  • Flash Point >100°C
  • Transport Information UN 2811
  • Appearance
  • Safety A human poison by ingestion. Poison experimentally by inhalation and ingestion routes. Moderately toxic by skin contact. Human systemic effects by inhalation: lachrymation, somnolence, and olfaction effects. Experimental teratogenic and reproductive effects. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, POx, and SOx. See also ESTERS.
  • Risk Codes R21/22;R50/53   
  • Molecular Structure Molecular Structure of 732-11-6 (Phosmet)
  • Hazard Symbols
  • Synonyms Phosphorodithioicacid, O,O-dimethyl S-phthalimidomethyl ester (6CI); Phosphorodithioic acid,O,O-dimethyl ester, S-ester with N-(mercaptomethyl)phthalimide (8CI);Decemthion; Decemthion EK 20; Decemthion P-6; Decemtion; Fosmet; Ftalophos; GWN1976; Imidan; Imidathion; N-(Mercaptomethyl)phthalimide S-(O,O-dimethyl phosphorodithioate);O,O-Dimethyl S-(phthalimidomethyl) dithiophosphate; O,O-DimethylS-phthalimidomethyl phosphorodithioate; O,O-Dimethyl S-phthalimidomethylphosphorodithioate; Orbisect; Ordatox; PMP; PMP (pesticide); Phosmet;Phthalophos; Porect; Prolate; R 1504; S-Phthalimidomethyl O,O-dimethylphosphorodithioate; Safidon; Simidan; Starbar GX 118; Stauffer R 1504
  • PSA 123.04000
  • LogP 3.07910

Phosmet Chemical Properties

MF: C11H12NO4PS2
MW: 317.32
EINECS: 211-987-4
mp:  72.5°C
Fp:  >100 °C
storage temp:  0-6°C 
CAS DataBase Reference: 732-11-6(CAS DataBase Reference)
NIST Chemistry Reference: 732-11-6(NIST)
The structure of  PHTHALIMIDOMETHYL-O,O-DIMETHYL
Synonyms:(O,O-Dimethyl-phthalimidiomethyl-dithiophosphate);Decemthion;Decemthion P-6;decemthionp-6;decemtionp-6;ENT 25,705;ent25,705;ent25705
Molecular Structure of PHOSPHORODITHIOATE is:

 

Phosmet Toxicity Data With Reference

1.   

mmo-sat 5 mg/plate

   MUREAV    Mutation Research. 116 (1983),185.
2.   

mma-sat 5 mg/plate

   MUREAV    Mutation Research. 116 (1983),185.
3.   

orl-hmn LDLo:50 mg/kg

   SPEADM    Special Publication of the Entomological Society of America .(College Park, MD.: )1974,74-1.
4.   

ihl-hmn TCLo:2 mg/m3/8H:NOSE,EYE,CNS

   HYSAAV    Hygiene and Sanitation: English Translation of Gigiena Sanitariya. 34 (1969),192.
5.   

orl-rat LD50:92,500 µg/kg

   GTPZAB    Gigiena Truda i Professionalnye Zabolevaniia. Labor Hygiene and Occupational Diseases. 14 (12)(1970),46.
6.   

ihl-rat LC50:54 mg/m3/4H

   85GMAT    Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure Izmerov, N.F., et al.,Moscow, USSR.: Centre of International Projects, GKNT,1982,59.
7.   

skn-rat LD50:1326 mg/kg

   85GMAT    Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure Izmerov, N.F., et al.,Moscow, USSR.: Centre of International Projects, GKNT,1982,59.
8.   

orl-mus LD50:26 mg/kg

   HYSAAV    Hygiene and Sanitation: English Translation of Gigiena Sanitariya. 34 (1969),192.
9.   

ihl-cat LCLo:65 mg/m3/4H

   HYSAAV    Hygiene and Sanitation: English Translation of Gigiena Sanitariya.

Phosmet Consensus Reports

PHTHALIMIDOMETHYL-O,O-DIMETHYL PHOSPHORODITHIOATE is reported in EPA Extremely Hazardous Substances List.

Phosmet Safety Profile

Hazard Codes:  Xn;N,N,Xn
Risk Statements:  21/22-50/53
Safety Statements:  22-36/37-60-61
RIDADR:  UN 2811
RTECS:  TE2275000
HazardClass:  6.1(b)
PackingGroup:  III
A human poison by ingestion. Poison experimentally by inhalation and ingestion routes. Moderately toxic by skin contact. Human systemic effects by inhalation: lachrymation, somnolence, and olfaction effects. Experimental teratogenic and reproductive effects. Mutation data reported. When heated to decomposition PHTHALIMIDOMETHYL-O,O-DIMETHYL PHOSPHORODITHIOATE emits very toxic fumes of NOx, POx, and SOx.

Phosmet Specification

Organophosphates, such as Phosmet, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides. Storage above 113 F, may lead to decomposition. [EPA, 1998].
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