CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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SZ9120000
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CHEMICAL NAME :
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Phosphonic acid, methyl-, dimethyl ester
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CAS REGISTRY NUMBER :
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756-79-6
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BEILSTEIN REFERENCE NO. :
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0878263
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LAST UPDATED :
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199710
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DATA ITEMS CITED :
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30
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MOLECULAR FORMULA :
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C3-H9-O3-P
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MOLECULAR WEIGHT :
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124.09
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WISWESSER LINE NOTATION :
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1OPO&1&O1
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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8210 mg/kg
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TOXIC EFFECTS :
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Behavioral - muscle weakness
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Intravenous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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1050 mg/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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>6810 mg/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Intravenous
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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912 mg/kg
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TOXIC EFFECTS :
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Behavioral - muscle weakness Lungs, Thorax, or Respiration - respiratory depression Lungs, Thorax, or Respiration - other changes
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Bird - chicken
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DOSE/DURATION :
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3998 mg/kg
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TOXIC EFFECTS :
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Behavioral - somnolence (general depressed activity) Behavioral - ataxia
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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75 gm/kg/15D-C
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TOXIC EFFECTS :
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Related to Chronic Data - death
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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130 gm/kg/13W-I
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TOXIC EFFECTS :
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Liver - changes in liver weight Related to Chronic Data - death
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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150 gm/kg/15D-C
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TOXIC EFFECTS :
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Gastrointestinal - gastritis Gastrointestinal - other changes Related to Chronic Data - death
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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260 gm/kg/13W-I
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TOXIC EFFECTS :
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Related to Chronic Data - death
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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515 gm/kg/2Y-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Kidney, Ureter, Bladder - Kidney tumors
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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63 gm/kg
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SEX/DURATION :
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male 63 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count) Reproductive - Fertility - male fertility index (e.g. # males impregnating females per # males exposed to fertile nonpregnant females)
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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126 gm/kg
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SEX/DURATION :
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male 63 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Paternal Effects - testes, epididymis, sperm duct Reproductive - Paternal Effects - prostate, seminal vesicle, Cowper's gland, accessory glands
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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15750 mg/kg
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SEX/DURATION :
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male 63 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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61250 mg/kg
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SEX/DURATION :
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male 7 week(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count) Reproductive - Paternal Effects - testes, epididymis, sperm duct
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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10 gm/kg
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SEX/DURATION :
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male 20 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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33 gm/kg
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SEX/DURATION :
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female 7-14 day(s) after conception
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TOXIC EFFECTS :
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Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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33400 mg/kg
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SEX/DURATION :
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female 6-13 day(s) after conception
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TOXIC EFFECTS :
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Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)
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TYPE OF TEST :
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Specific locus test
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TYPE OF TEST :
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Sperm Morphology
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TYPE OF TEST :
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Dominant lethal test
MUTATION DATA
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TYPE OF TEST :
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Sister chromatid exchange
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TEST SYSTEM :
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Rodent - hamster Ovary
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DOSE/DURATION :
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11 gm/L
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REFERENCE :
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MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 189,15,1987 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - A1091 No. of Facilities: 35 (estimated) No. of Industries: 2 No. of Occupations: 4 No. of Employees: 204 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - A1091 No. of Facilities: 53 (estimated) No. of Industries: 5 No. of Occupations: 8 No. of Employees: 2134 (estimated) No. of Female Employees: 763 (estimated)
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