*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : HA2690000
CHEMICAL NAME           : Cystine, L-
CAS REGISTRY NUMBER     : 56-89-3
BEILSTEIN REFERENCE NO. : 1728094
REFERENCE               : 4-04-00-03155 (Beilstein Handbook Reference)
LAST UPDATED            : 199707
DATA ITEMS CITED        : 5
MOLECULAR FORMULA       : C6-H12-N2-O4-S2
MOLECULAR WEIGHT        : 240.32
SYNONYMS/TRADE NAMES :
   * Cysteine disulfide
   * Cystin
   * Cystine (L)-
   * (-)-Cystine
   * L-Cystine
   * Cystine acid
   * Dicysteine
   * beta,beta'-Dithiodialanine
   * Oxidized L-cysteine
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 25 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   OYYAA2 Oyo Yakuri.  Pharmacometrics.  (Oyo Yakuri Kenkyukai, CPO Box 180,
   Sendai 980-91, Japan) V.1-    1967-  Volume(issue)/page/year: 15,199,1978
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 279 gm/kg/93D-C
TOXIC EFFECTS :
   Kidney, Ureter, Bladder - changes in bladder weight
   Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
   Related to Chronic Data - death
REFERENCE :
   OYYAA2 Oyo Yakuri.  Pharmacometrics.  (Oyo Yakuri Kenkyukai, CPO Box 180,
   Sendai 980-91, Japan) V.1-    1967-  Volume(issue)/page/year: 15,199,1978

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - 83262
       No. of Facilities: 138 (estimated)
       No. of Industries: 2
       No. of Occupations: 9
       No. of Employees: 6186 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 83262
       No. of Facilities: 692 (estimated)
       No. of Industries: 5
       No. of Occupations: 17
       No. of Employees: 15248 (estimated)
       No. of Female Employees: 13345 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY

 
                            *** END OF RECORD ***