*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : KJ0175000
CHEMICAL NAME : Ethanethiol, 2-amino-
CAS REGISTRY NUMBER : 60-23-1
LAST UPDATED : 199710
DATA ITEMS CITED : 17
MOLECULAR FORMULA : C2-H7-N-S
MOLECULAR WEIGHT : 77.16
WISWESSER LINE NOTATION : Z2SH
COMPOUND DESCRIPTOR : Drug
Mutagen
Reproductive Effector
SYNONYMS/TRADE NAMES :
* 2-Aminoethanethiol
* 2-Aminoethyl mercaptan
* Becaptan
* Cisteamina
* Cysteamide
* Cysteamin
* Cysteamine
* Cysteinamine
* Decarboxycysteine
* Lambraten
* MEA
* Mecramine
* Mercamine
* Mercaptamine
* beta-Mercaptoethylamine
* (2-Mercaptoethyl)amine
* Thioethanolamine
*** HEALTH HAZARD DATA ***
** ACUTE TOXICITY DATA **
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 232 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag,
Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951-
Volume(issue)/page/year: 5,421,1955
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 84 mg/kg
TOXIC EFFECTS :
Peripheral Nerve and Sensation - spastic paralysis with or without sensory
change
Behavioral - convulsions or effect on seizure threshold
Skin and Appendages - hair
REFERENCE :
OSDIAF Osaka Shiritsu Daigaku Igaku Zasshi. Journal of the Osaka City
Medical Center. (Osaka, Japan) V.4-23, 1955-74. For publisher
information, see OIGZDE. Volume(issue)/page/year: 5,128,1956
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 625 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JMCMAR Journal of Medicinal Chemistry. (American Chemical Soc.,
Distribution Office Dept. 223, POB POB 57136, West End Stn., Washington, DC
20037) V.6- 1963- Volume(issue)/page/year: 18,798,1975
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JMCMAR Journal of Medicinal Chemistry. (American Chemical Soc.,
Distribution Office Dept. 223, POB POB 57136, West End Stn., Washington, DC
20037) V.6- 1963- Volume(issue)/page/year: 12,510,1969
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 84 mg/kg
TOXIC EFFECTS :
Peripheral Nerve and Sensation - spastic paralysis with or without sensory
change
Behavioral - convulsions or effect on seizure threshold
Skin and Appendages - hair
REFERENCE :
OSDIAF Osaka Shiritsu Daigaku Igaku Zasshi. Journal of the Osaka City
Medical Center. (Osaka, Japan) V.4-23, 1955-74. For publisher
information, see OIGZDE. Volume(issue)/page/year: 5,128,1956
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 190 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CHDDAT Comptes Rendus des Seances de l'Academie des Sciences, Serie D:
Sciences Naturelles. (Paris, France) V.262-291, 1966-80. For publisher
information, see CRASEV. Volume(issue)/page/year: 262,206,1966
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Unreported
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 350 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag,
Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951-
Volume(issue)/page/year: 5,421,1955
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 150 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag,
Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951-
Volume(issue)/page/year: 5,421,1955
** REPRODUCTIVE DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 42 gm/kg
SEX/DURATION : female 70 day(s) pre-mating - 21 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured
before birth)
Reproductive - Fertility - other measures of fertility
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
11,523,1967
** MUTATION DATA **
TYPE OF TEST : Phage inhibition capacity
TEST SYSTEM : Bacteria - Escherichia coli
DOSE/DURATION : 50 mg/L
REFERENCE :
APMBAY Applied Microbiology. (Washington, DC) V.1-30, 1953-75. For
publisher information, see AEMIDF. Volume(issue)/page/year: 12,234,1964
TYPE OF TEST : Unscheduled DNA synthesis
TEST SYSTEM : Human Fibroblast
DOSE/DURATION : 1 mmol/L
REFERENCE :
CALEDQ Cancer Letters (Shannon, Ireland). (Elsevier Scientific Pub. Ireland
Ltd., POB 85, Limerick, Ireland) V.1- 1975- Volume(issue)/page/year:
5,199,1978
TYPE OF TEST : Cytogenetic analysis
TEST SYSTEM : Rodent - hamster Ovary
DOSE/DURATION : 1 mmol/L
REFERENCE :
CALEDQ Cancer Letters (Shannon, Ireland). (Elsevier Scientific Pub. Ireland
Ltd., POB 85, Limerick, Ireland) V.1- 1975- Volume(issue)/page/year:
5,199,1978
TYPE OF TEST : Sister chromatid exchange
TEST SYSTEM : Rodent - hamster Ovary
DOSE/DURATION : 100 umol/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 68,351,1979
*** STATUS IN U.S. ***
EPA GENETOX PROGRAM 1988, Negative: N crassa-reversion
EPA GENETOX PROGRAM 1988, Inconclusive: E coli polA without S9; Histidine
reversion-Ames test
EPA TSCA Section 8(d) unpublished health/safety studies
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998
*** END OF RECORD ***