Substance Identity
CAS Number 75-08-1
Chemical Name Ethanethiol
Type of substance Organic
SMILES SCC
Moiety of concern organic
Categorization Results

Meets Government of Canada Categorization Criteria? No
Meets Human Health Categorization Criteria? No
Meets Environmental Criteria for Categorization? No
Persistent (P)? No
Rational for P Experiment
Bioaccumulative (B)? No
Rational for B QSAR
Inherently Toxic to Aquatic Organisms (iT)? No
Rational for iT QSAR
DSL Quantity range (tonnes/year) >1000T

Ecological data supporting decisions

Underlying data regarding persistence

Media of concern leading to Categorization Air
Experimental Biodegradation half-life (days) Not Available
Predicted Ultimate degradation half-life (days) 15
MITI probability of biodegradation 0.7651
TOPKAT probability of biodegradation 0
EPI Predicted Ozone reaction half-life (days) 999
Experimental Atmospheric Oxidation half-life (days) 0.228513770180437
Reference (oxidation) ATKINSON,R.; KINETICS AND MECHANISMS OF THE GAS-PHASE REACTIONS OF THE HYDROXYL RADICAL WITH ORGANIC COMPOUNDS.; JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA. MONOGRAPH NO. 1.; 1989
Robust Study Summary (oxidation)
75081.doc
EPI Predicted Atmospheric Oxidation half-life (days) 0.2677

Underlying data regarding Bioaccumulation

Log Kow predicted by KowWin 1.27
Log BAF T2MTL predicted by Gobas 0.324865165332984
Log BCF 5% T2LTL predicted by Gobas 0.278434575020821
Log BCF Max predicted by OASIS 1.35353163881232
Log BCF predicted by BCFWIN 0.276

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 3900
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 3,900
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 745.554
Toxicity to fish (LC50 in mg/l) as predicted by Aster 274.924938
Toxicity to fish (LC50 in mg/l) as predicted by PNN 6.25862
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 19,000
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 360.689
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 2.24E+002

Human Health data supporting decisions
Underlying data regarding potential for exposure

LPE/IPE/GPE Greatest Potential for Exposure (HC Simple Exposure Tool)

Underlying data regarding Previous Assessments

Underlying data regarding Simple Hazard Assessment


Underlying data regarding Complex Hazard Assessment

Carcinogencity

Screening Outcome Negative
Screening Method
Data Results
Reference TOPKAT v6.2 CASETOX v1.7

Genotoxicity

Screening Outcome Negative
Screening Method
Data Results in vitro Mutagenicity
Reference Phillips Petroleum Company, 1986, unpublished data (as cited in IUCLID, 2003)

Developmental Toxicity

Screening Outcome Negative
Screening Method
Data Results
Reference TOPKAT v6.2 CASETOX v1.7