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Registry of Toxic Effects of Chemical Substances (RTECS)

Phosphorous acid, triethyl ester

RTECS #

TH1130000

CAS #

122-52-1

Updated

January 1997

Molecular Weight

166.18

Molecular Formula

C6H15O3P

Synonyms

Fosforyn trojetylowy (Czech)

Skin and Eye Irritation and References

Route/OrganismDoseEffectReference
eye /mammal (species unspecified) 100 mg mildMEPAAX 29,393,1978
eye /rabbit 100 mg moderateATDAEI 1,218,1992
skin /mammal (species unspecified) 500 mg mildMEPAAX 29,393,1978
skin /rabbit 500 mg mildATDAEI 1,218,1992

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
inhalation/mouse lethal concentration (50 percent kill): 6203 mg/m3/6HLung, Thorax, or Respiration: Respiratory depression

Lung, Thorax, or Respiration: Other changes

Gastrointestinal: Changes in structure or function of salivary glands
ATDAEI 1,218,1992
inhalation/rat lethal concentration (50 percent kill): 11063 mg/m3/6HLung, Thorax, or Respiration: Respiratory depression

Lung, Thorax, or Respiration: Other changes

Gastrointestinal: Changes in structure or function of salivary glands
ATDAEI 1,218,1992
intraperitoneal/mouse Lethal dose: >500 mg/kgCBCCT* 5,286,1953
oral/mouse lethal dose (50 percent kill): 3720 mg/kgBehavioral: Ataxia

Lung, Thorax, or Respiration: Respiratory stimulation
ATDAEI 1,218,1992
oral/rat lethal dose (50 percent kill): 1840 mg/kgBehavioral: Ataxia

Lung, Thorax, or Respiration: Respiratory stimulation
ATDAEI 1,218,1992
skin/rabbit lethal dose (50 percent kill): 2800 mg/kgATDAEI 1,218,1992

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Occupational Hazard Survey 1974Hazard Code 84307; Number of Industries 3; Total Number of Facilities 38; Number of Occupations 18; Total Number of Employees Exposed 5414

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
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