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121-45-9

121-45-9 structure
121-45-9 structure
Name Trimethyl phosphite
Synonyms Methyl phosphite (P(OMe)3
dimethyl methylphosphonate
Trimethylfosfit
Trimethylphosphite
Methyl phosphite
Trimethyl phosphite
Fosforyn trojmetylowy
MFCD00008350
EINECS 204-471-5
Trimethoxyphosphine
Phosphorous acid, trimethyl ester
phosphorous acid trimethyl ester
Density 1.052 g/mL at 25 °C(lit.)
Boiling Point 110.2±8.0 °C at 760 mmHg
Melting Point −78 °C(lit.)
Molecular Formula C3H9O3P
Molecular Weight 124.076
Flash Point 27.8±0.0 °C
Exact Mass 124.028931
PSA 41.28000
LogP -0.93
Vapour density 4.3 (vs air)
Vapour Pressure 28.1±0.2 mmHg at 25°C
Index of Refraction n20/D 1.408(lit.)

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

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
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
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
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
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
DOSE :
1640 mg/kg
SEX/DURATION :
female 6-15 day(s) after conception
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)
Symbol GHS02 GHS05 GHS07
GHS02, GHS05, GHS07
Signal Word Danger
Hazard Statements H226-H302-H315-H318-H335
Supplemental HS Reacts violently with water.
Precautionary Statements P261-P280-P305 + P351 + P338
Personal Protective Equipment Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes Xn:Harmful;
Risk Phrases R10;R22;R36/37/38
Safety Phrases S26
RIDADR UN 2329 3/PG 3
WGK Germany 1
RTECS TH1400000
Packaging Group III
Hazard Class 3
HS Code 2920901100
HS Code 2920901100
Summary 2920901100 trimethyl phosphite。supervision conditions:23(import license for dual-use item and technologies,export license for dual-use item and technologies)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:30.0%

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