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Registry of Toxic Effects of Chemical Substances (RTECS)

Ethanethiol

RTECS #

KI9625000

CAS #

75-08-1

Updated

September 2013

Molecular Weight

62.14

Molecular Formula

C2H6S

Synonyms

Aethanethiol (German)
Aethylmercaptan (German)
Etantiolo (Italian)
Ethaanthiol (Dutch)
Ethanethiol (OSHA)
Ethyl hydrosulfide
Ethyl mercaptan
Ethyl mercaptan (ACGIH:OSHA)
Ethyl sulfhydrate
Ethyl thioalcohol
Ethylmercaptaan (Dutch)
Ethylmerkaptan (Czech)
Etilmercaptano (Italian)
LPG ethyl mercaptan 1010
Thioethanol
Thioethyl alcohol

Skin and Eye Irritation and References

Route/OrganismDoseEffectReference
eye /rabbit 84 mgAIHAAP 19,171,1958
eye /rabbit 100 mg/24H moderate85JCAE -,982,1986
skin /rabbit 500 mg/24H mild85JCAE -,982,1986

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
inhalation/mouse lethal concentration (50 percent kill): 2770 ppm/4HBehavioral: Excitement

Behavioral: Change in motor activity (specific assay)

Lung, Thorax, or Respiration: Cyanosis
AIHAAP 19,171,1958
inhalation/rat lethal concentration (50 percent kill): 4420 ppm/4HPeripheral Nerve and Sensation: Spastic paralysis with/without sensory change

Behavioral: Excitement

Lung, Thorax, or Respiration: Cyanosis
AIHAAP 19,171,1958
intraperitoneal/rat lethal dose (50 percent kill): 226 mg/kgBehavioral: Muscle weakness

Behavioral: Ataxia

Lung, Thorax, or Respiration: Cyanosis
AIHAAP 19,171,1958
oral/rat lethal dose (50 percent kill): 682 mg/kgBehavioral: Muscle weakness

Behavioral: Ataxia

Lung, Thorax, or Respiration: Cyanosis
AIHAAP 19,171,1958

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 0.5 ppmDTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARD-airtime-weighted average 0.5 ppm (1 mg/m3)DTLWS* 3,18,1973
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRALIAtime-weighted average 0.5 ppm (1.3 mg/m3), JUL2008
Occupational Exposure Limit-AUSTRIAMAK-TMW 0.5 ppm (1 mg/m3);KZW 0.5 ppm (1 mg/m3), 2007
Occupational Exposure Limit-BELGIUMtime-weighted average 0.5 ppm (1.3 mg/m3), MAR2002
Occupational Exposure Limit-DENMARKtime-weighted average 0.5 ppm (1 mg/m3), MAY2011
Occupational Exposure Limit-FINLANDshort term exposure limit 0.5 ppm (1.3 mg/m3), NOV2011
Occupational Exposure Limit-FRANCEVME 0.5 ppm (1 mg/m3), FEB2006
Occupational Exposure Limit-GERMANYMAK 0.5 ppm (1.3 mg/m3), 2011
Occupational Exposure Limit-HUNGARYtime-weighted average 1 mg/m3, short term exposure limit 1 mg/m3, SEP2000
Occupational Exposure Limit-ICELANDtime-weighted average 0.5 ppm (1 mg/m3), NOV2011
Occupational Exposure Limit-KOREAtime-weighted average 0.5 ppm (1 mg/m3), 2006
Occupational Exposure Limit-MEXICOtime-weighted average 0.5 ppm (1 mg/m3), 2004
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 0.5 ppm (1.3 mg/m3), JAN2002
Occupational Exposure Limit-PERUtime-weighted average 0,5 ppm (1,3 mg/m3), JUL2005
Occupational Exposure Limit-POLANDMAC(time-weighted average) 1 mg/m3, MAC(short term exposure limit) 3 mg/m3, JAN1999
Occupational Exposure Limit-RUSSIAshort term exposure limit 1 mg/m3, Skin, JUN2003
Occupational Exposure Limit-SWITZERLANDMAK-week 0.5 ppm (1.3 mg/m3), KZG-week 1 ppm (2.6 mg/m3), JAN2011
Occupational Exposure Limit-THAILANDtime-weighted average 10 ppm (25 mg/m3), JAN1993
Occupational Exposure Limit-THE NETHERLANDSMAC-TGG 1 mg/m3, 2003
Occupational Exposure Limit-THE PHILIPPINEStime-weighted average 10 ppm (25 mg/m3), JAN1993
Occupational Exposure Limit-TURKEYtime-weighted average 10 ppm (25 mg/m3), JAN1993
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 0.5 ppm (1.3 mg/m3);short term exposure limit 2 ppm (5.2 mg/m3), OCT2007
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)8H time-weighted average 0.5 ppm (1 mg/m3)CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors)ceiling concentration 10 ppm (25 mg/m3)CFRGBR 41,50-204.50,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)ceiling concentration 10 ppm (25 mg/m3)CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)ceiling concentration 0.5 ppm (1 mg/m3)CFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO ETHANETHIOL-airceiling concentration 0.5 ppmNIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code 32760; Number of Industries 2; Total Number of Facilities 110; Number of Occupations 7; Total Number of Employees Exposed 1793; Total Number of Female Employees Exposed 14
National Occupational Hazard Survey 1974Hazard Code 32760; Number of Industries 1; Total Number of Facilities 19; Number of Occupations 15; Total Number of Employees Exposed 1476

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA Section 8(d) unpublished health/safety studies
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
NIOSH Analytical Method, 1994: Mercaptans, 2542
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