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MSDS  : Phosphorous acid, trimethyl ester
CAS  : 121-45-9
SYNONYMS  : * Fosforyn trojmetylowy * Trimethoxyfosfin * Trimethoxyphosphine * Trimethylfosfit * Trimethyl phosphite
*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER : TH1400000
CHEMICAL NAME : Phosphorous acid, trimethyl ester
CAS REGISTRY NUMBER : 121-45-9
LAST UPDATED : 199712
DATA ITEMS CITED : 29
MOLECULAR FORMULA : C3-H9-O3-P
MOLECULAR WEIGHT : 124.09
WISWESSER LINE NOTATION : 1OPO1&O1
COMPOUND DESCRIPTOR : Reproductive Effector
Primary Irritant
SYNONYMS/TRADE NAMES :
* Fosforyn trojmetylowy
* Trimethoxyfosfin
* Trimethoxyphosphine
* Trimethylfosfit
* Trimethyl phosphite

*** HEALTH HAZARD DATA ***

** SKIN/EYE IRRITATION DATA **

TYPE OF TEST : Standard Draize test
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 500 mg
REACTION SEVERITY : Severe
REFERENCE :
34ZIAG "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York,
Academic Press, Inc., 1969 Volume(issue)/page/year: -,609,1969

TYPE OF TEST : Standard Draize test
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Mammal - species unspecified
DOSE/DURATION : 500 mg
REACTION SEVERITY : Mild
REFERENCE :
MEPAAX Medycyna Pracy. Industrial Medicine. (Ars-Polona, POB 1001, 00-068
Warsaw 1, Poland) V.1- 1950- Volume(issue)/page/year: 29,393,1978

TYPE OF TEST : Standard Draize test
ROUTE OF EXPOSURE : Administration into the eye
SPECIES OBSERVED : Mammal - species unspecified
DOSE/DURATION : 100 mg
REACTION SEVERITY : Mild
REFERENCE :
MEPAAX Medycyna Pracy. Industrial Medicine. (Ars-Polona, POB 1001, 00-068
Warsaw 1, Poland) V.1- 1950- Volume(issue)/page/year: 29,393,1978

** ACUTE TOXICITY DATA **

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1600 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ALBRW* Albright & Wilson Inc. (P.O. Box 26229, Richmond, VA 23260-6229)
Volume(issue)/page/year: #OPB-3,1984

TYPE OF TEST : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : >10000 ppm/4H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf
Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year:
34,286,1973

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 4180 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ENVRAL Environmental Research. (Academic Press, Inc., 1 E. First St.,
Duluth, MN 55802) V.1- 1967- Volume(issue)/page/year: 9,1,1975

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 2600 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf
Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year:
34,286,1973

** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 500 ppm/7.5H/8W-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - emphysema
Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis)
Skin and Appendages - hair
REFERENCE :
AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf
Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year:
34,286,1973

** REPRODUCTIVE DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 1640 mg/kg
SEX/DURATION : female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - Central Nervous System
Reproductive - Specific Developmental Abnormalities - craniofacial
(including nose and tongue)
Reproductive - Specific Developmental Abnormalities - musculoskeletal system
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
72,119,1984

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 1640 mg/kg
SEX/DURATION : female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - urogenital system
Reproductive - Specific Developmental Abnormalities - homeostasis
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
72,119,1984

*** REVIEWS ***

ACGIH TLV-TWA 10 mg/m3 (2 ppm)
DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
(BEIs) booklet issues by American Conference of Governmental Industrial
Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year:
TLV/BEI,1997

*** OCCUPATIONAL EXPOSURE LIMITS ***

OEL-AUSTRALIA:TWA 2 ppm (10 mg/m3) JAN 1993

OEL-BELGIUM:TWA 2 ppm (10 mg/m3) JAN 1993

OEL-DENMARK:TWA 0.5 ppm (2.6 mg/m3) JAN 1993

OEL-FINLAND:TWA 0.5 ppm (2.6 mg/m3);STEL 10 ppm (52 mg/m3);Skin JAN 1993

OEL-FRANCE:TWA 2 ppm (10 mg/m3) JAN 1993

OEL-THE NETHERLANDS:TWA 2 ppm (10 mg/m3) JAN 1993

OEL-SWITZERLAND:TWA 2 ppm (10 mg/m3) JAN 1993

OEL-UNITED KINGDOM:TWA 2 ppm (10 mg/m3) JAN 1993

OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV

OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV

*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH RECOMMENDED EXPOSURE LEVEL (REL) :
NIOSH REL TO TRIMETHYL PHOSPHITE-air:10H TWA 2 ppm
REFERENCE :
NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of
Health, Education, and Welfare, Reports and Memoranda.
Volume(issue)/page/year: DHHS #92-100,1992

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
NOHS - National Occupational Hazard Survey (1974)
NOHS Hazard Code - 84215
No. of Facilities: 260 (estimated)
No. of Industries: 5
No. of Occupations: 7
No. of Employees: 1891 (estimated)

NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - 84215
No. of Facilities: 55 (estimated)
No. of Industries: 2
No. of Occupations: 18
No. of Employees: 14190 (estimated)
No. of Female Employees: 6312 (estimated)

*** STATUS IN U.S. ***

EPA TSCA Section 8(b) CHEMICAL INVENTORY

EPA TSCA 8(a) PRELIMINARY ASSESSMENT INFORMATION, FINAL RULE
FEREAC Federal Register. (U.S. Government Printing Office, Supt. of
Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year:
47,26992,82

EPA TSCA Section 8(e) Risk Notification, 8EHQ-0892-8977;8EHQ-0892-8988

EPA TSCA Section 8(e) Risk Notification, 8EHQ-0892-9122

EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998


*** END OF RECORD ***
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ALL Chemical Property And Toxicity Analysis PAGES IN THIS GROUP
NAMECAS
Phosphorotrithioic acid, O-methyl S,S-dipropyl ester 4104-03-4
Phosphorotrithioic acid, S,S,S-tributyl ester 78-48-8
Phosphorotrithioic acid, O,S,S-triethyl ester 3347-30-6
Phosphorotrithioic acid, S,S,S-triethyl ester 1486-39-1
Phosphorotrithioic acid, S,S,S-trimethyl ester 681-71-0
Phosphorotrithioic acid, S,S,S-tripentyl ester 681-71-0
Phosphorotrithioic acid, S,S,S-tripropyl ester 1642-44-0
Phosphorotrithious acid, tributyl ester 150-50-5
Phosphorodithioic acid, O,O-dimethyl ester, S-esterwith 2-mercapto-N-methyl acetamide mixed with milbex(1:2) 150-50-5
Phosphorotrithious acid, triethyl ester 688-62-0
Phosphorotrithious acid, trimethyl ester 816-80-8
Phosphorotrithious acid, tripropyl ester 869-56-7
Phosphorotrithious acid, tris(2-ethoxyethyl)- 73972-85-7
Phosphorous acid, bis(2,4-dichlorophenoxyethyl)ester, mixed with tris(2,4-dichlorophenoxyethyl)phosphite 8005-49-0
Phosphorous acid, bis(2-ethylhexyl) ester, bariumsalt 63981-01-1
Phosphorous acid, bis(2-ethylhexyl) ester, cadmiumsalt 7495-93-4
Phosphorous acid, bis(2-ethylhexyl) ester, zinc salt 7495-94-5
Phosphorous acid, butyl ester 16456-56-7
Phosphorous acid, 2-chloroethyl cyclic ethylene ester 3055-74-1
Phosphorodithioic acid, O,O-dimethyl ester, S-esterwith 3-(mercaptomethyl)-2- benzothiazolinone 30725-72-5
Phosphorous acid, cyclic ethylene ethyl ester 695-11-4
Phosphorous acid, cyclic ethylene methyl ester 3741-36-4
Phosphorous acid, cyclic neopentanetetraylbis(2,4-di-tert-butylphenyl)ester 26741-53-7
Phosphorous acid, cyclic o-phenylene isopropyl ester 26741-53-7
Phosphorous acid, 2-(2,4-dichlorophenoxy)ethyldiethyl ester 63981-06-6
Phosphorous acid, diethyl ester 762-04-9
Phosphorous acid, diethyl (2-(1-naphthyl)ethyl) ester 63981-07-7
Phosphorous acid, dihexadecyl ester 37032-33-0
Phosphorous acid, diphenyl nonyl ester 63981-08-8
Phosphorous acid, 2-ethylhexyl diphenyl ester 15647-08-2
Phosphorodithioic acid, O,O-dimethyl ester, S-esterwith 3-(mercaptomethyl)- 1,2,3-benzotriazin-4(3H)-one 86-50-0
Phosphorous acid, (2-ethylhexyl) octyl phenyl ester 7346-61-4
Phosphorous acid, tributyl ester 102-85-2
Phosphorous acid, tributyl ester, compd. with zincchloride (1:1) 69782-61-2
Phosphorous acid, tri-m-cresyl ester 620-38-2
Phosphorous acid, tri-o-cresyl ester 2622-08-4
Phosphorous acid, tri-p-cresyl ester 620-42-8
Phosphorous acid, triethyl ester 122-52-1
Phosphorous acid, triisodecyl ester 25448-25-3
Phosphorous acid, triisooctyl ester 25103-12-2
Phosphorous acid, trimethyl ester 121-45-9
Phosphorodithioic acid, O,O-dimethyl ester, S-esterwith 3-(mercaptomethyl)- 2-benzoxazolinone 1218-13-9
Phosphorous acid, trioctyl ester 3028-88-4
Phosphorous acid, triphenyl ester 101-02-0
Phosphorous acid, tris((diphenylethyl)phenyl) ester 101-02-0
Phosphorous acid, tris(2-ethylhexyl) ester 301-13-3
Phosphorous acid, tris(2-ethylhexyl) ester, complexwith copper(I) chloride (1:1) 24483-96-3
Phosphorous acid, tris(2-ethylhexyl) ester, complexwith mercury(II) bromide (1:1) 64011-37-6
Phosphorous acid, tris(2-ethylhexyl) ester, complexwith mercury(II) chloride (1:1) 63981-49-7
Phosphorous acid, tris(2-ethylhexyl) ester, complexwith zinc chloride (1:1) 7495-95-6

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