*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : PD0457000
CHEMICAL NAME           : Methionine, L-
CAS REGISTRY NUMBER     : 63-68-3
LAST UPDATED            : 199710
DATA ITEMS CITED        : 24
MOLECULAR FORMULA       : C5-H11-N-O2-S
MOLECULAR WEIGHT        : 149.23
WISWESSER LINE NOTATION : QVYZ2S1 -L
COMPOUND DESCRIPTOR     : Mutagen
                          Reproductive Effector
SYNONYMS/TRADE NAMES :
   * L-alpha-Amino-gamma-methylmercaptobutyric acid
   * (S)-2-Amino-4-(methylthio)butanoic acid
   * L(-)-Amino-gamma-methylthiobutyric acid
   * 2-Amino-4-methylthiobutanoic acid
   * 2-Amino-4-(methylthio)butyric acid
   * Butyric acid, 2-amino-4-(methylthio)-
   * Butanoic acid, 2-amino-4-(methylthio)-, (S)-
   * Cymethion
   * Lactet
   * Liquimeth
   * Methionine
   * L-Methionine
   * L-(-)-Methionine
   * S-Methionine
   * L-gamma-Methylthio-alpha-aminobutyric acid
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 36 gm/kg
TOXIC EFFECTS :
   Behavioral - changes in motor activity (specific assay)
   Immunological Including Allergic - uncharacterized
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 48(6),20,1983
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 4328 mg/kg
TOXIC EFFECTS :
   Lungs, Thorax, or Respiration - dyspnea
   Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
   ABBIA4 Archives of Biochemistry and Biophysics.  (Academic Press, Inc., 1 E.
   First St., Duluth, MN 55802)  V.31-    1951-  Volume(issue)/page/year:
   58,253,1955
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : >9500 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   PMRSDJ Progress in Mutation Research.  (Elsevier Science Pub. Co., Inc., 52
   Vanderbilt Ave., New York, NY 10017)  V.1-    1981- Volume(issue)/page/year:
   1,682,1981
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 21600 mg/kg/60D-I
TOXIC EFFECTS :
   Liver - changes in liver weight
   Blood - leukopenia
   Biochemical - Enzyme inhibition, induction, or change in blood or tissue
   levels - true cholinesterase
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 48(6),20,1983
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 26100 mg/kg
SEX/DURATION            : female 10-20 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death,
   e.g., stunted fetus)
   Reproductive - Specific Developmental Abnormalities - musculoskeletal system
REFERENCE :
   DTTIAF Deutsche Tieraerztliche Wochenschrift.  (Hanover, Fed. Rep. Ger.)
   V.1-77, 1893-1970.  Volume(issue)/page/year: 82,457,1975
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 14720 mg/kg
SEX/DURATION            : female 10-20 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
   resorbed implants per total number of implants)
REFERENCE :
   DTTIAF Deutsche Tieraerztliche Wochenschrift.  (Hanover, Fed. Rep. Ger.)
   V.1-77, 1893-1970.  Volume(issue)/page/year: 82,457,1975
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 35 gm/kg
SEX/DURATION            : female 2 week(s) pre-mating
                          female 1-21 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death,
   e.g., stunted fetus)
REFERENCE :
   TJADAB Teratology, The International Journal of Abnormal Development. (Alan
   R. Liss, Inc., 41 E. 11th St., New York, NY 10003)  V.1-    1968-
   Volume(issue)/page/year: 46,499,1992
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Escherichia coli
DOSE/DURATION           : 100 mg/L
REFERENCE :
   PMRSDJ Progress in Mutation Research.  (Elsevier Science Pub. Co., Inc., 52
   Vanderbilt Ave., New York, NY 10017)  V.1-    1981- Volume(issue)/page/year:
   1,376,1981
 
TYPE OF TEST            : Phage inhibition capacity
TEST SYSTEM             : Bacteria - Escherichia coli
DOSE/DURATION           : 200 mg/L
REFERENCE :
   PMRSDJ Progress in Mutation Research.  (Elsevier Science Pub. Co., Inc., 52
   Vanderbilt Ave., New York, NY 10017)  V.1-    1981- Volume(issue)/page/year:
   1,224,1981
 
TYPE OF TEST            : DNA repair
TEST SYSTEM             : Yeast - Saccharomyces cerevisiae
DOSE/DURATION           : 500 mg/L
REFERENCE :
   PMRSDJ Progress in Mutation Research.  (Elsevier Science Pub. Co., Inc., 52
   Vanderbilt Ave., New York, NY 10017)  V.1-    1981- Volume(issue)/page/year:
   1,502,1981
 
TYPE OF TEST            : DNA damage
TEST SYSTEM             : Human Cells - not otherwise specified
DOSE/DURATION           : 2 umol/L
REFERENCE :
   BBACAQ Biochimica et Biophysica Acta.  (Elsevier Science Pub. B.V., POB 211,
   1000 AE Amsterdam, Netherlands)  V.1-    1947- Volume(issue)/page/year:
   696,15,1982
 
TYPE OF TEST            : Unscheduled DNA synthesis
TEST SYSTEM             : Human Fibroblast
DOSE/DURATION           : 125 mg/L
REFERENCE :
   PMRSDJ Progress in Mutation Research.  (Elsevier Science Pub. Co., Inc., 52
   Vanderbilt Ave., New York, NY 10017)  V.1-    1981- Volume(issue)/page/year:
   1,517,1981
 
TYPE OF TEST            : Sister chromatid exchange
TEST SYSTEM             : Human Lymphocyte
DOSE/DURATION           : 10 mg/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 372,75,1996
 
TYPE OF TEST            : DNA damage
TEST SYSTEM             : Rodent - hamster Ovary
DOSE/DURATION           : 2 umol/L
REFERENCE :
   BBACAQ Biochimica et Biophysica Acta.  (Elsevier Science Pub. B.V., POB 211,
   1000 AE Amsterdam, Netherlands)  V.1-    1947- Volume(issue)/page/year:
   696,15,1982
 
TYPE OF TEST            : Cytogenetic analysis
ROUTE OF EXPOSURE       : Intraperitoneal
TEST SYSTEM             : Rodent - guinea pig
DOSE/DURATION           : 500 mg/kg
REFERENCE :
   JCLBA3 Journal of Cell Biology.  (Rockefeller Univ. Press, 1230 York Ave.,
   New York, NY 10003) V.12-    1962-  Volume(issue)/page/year: 47,190a,1970

                              *** REVIEWS ***
 
   TOXICOLOGY REVIEW
   JAFCAU Journal of Agricultural and Food Chemistry.  (American Chemical Soc.,
   Distribution Office Dept. 223, POB 57136, West End Stn., Washington, DC
   20037)  V.1-    1953-  Volume(issue)/page/year: 22,2,1974

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-RUSSIA:STEL 5 mg/m3 JAN 1993

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - 81891
       No. of Facilities: 273 (estimated)
       No. of Industries: 5
       No. of Occupations: 17
       No. of Employees: 12017 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 81891
       No. of Facilities: 1116 (estimated)
       No. of Industries: 4
       No. of Occupations: 18
       No. of Employees: 28520 (estimated)
       No. of Female Employees: 17038 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA GENETOX PROGRAM 1988, Negative: Sperm morphology-mouse
   
   EPA GENETOX PROGRAM 1988, Inconclusive: Mammalian micronucleus
   
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA Section 8(d) unpublished health/safety studies
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***