Substance Identity
CAS Number 74-85-1
Chemical Name Ethene
Type of substance Organic
SMILES C=C
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 Category
Bioaccumulative (B)? No
Rational for B Category
Inherently Toxic to Aquatic Organisms (iT)? No
Rational for iT Category
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 0.8617
TOPKAT probability of biodegradation 0.614
Experimental Ozone Reaction half-life (days) 6.54761904761905
Reference (ozone reaction) 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
EPI Predicted Ozone reaction half-life (days) 6.549
Experimental Atmospheric Oxidation half-life (days) 1.25521648408972
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
EPI Predicted Atmospheric Oxidation half-life (days) 1.255

Underlying data regarding Bioaccumulation

Empirical Log Kow 1.13
Log Kow predicted by KowWin 1.27
Log BAF T2MTL predicted by Gobas 0.252545089950747
Log BCF 5% T2LTL predicted by Gobas 0.214030189854304
Log BCF Max predicted by OASIS 1.35298411058678
Log BCF predicted by BCFWIN 0.17

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 100.971
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 100.971
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 427.0098
Toxicity to fish (LC50 in mg/l) as predicted by Aster 101.527883
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 31.7
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 49.034
Chronic toxicity to daphnia or algae (EC50 in mg/l) as predicted by Ecosar v0.99g 3.834
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 1.01E+002

Human Health data supporting decisions
Underlying data regarding potential for exposure

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

Underlying data regarding Previous Assessments

Underlying data regarding Simple Hazard Assessment


Underlying data regarding Complex Hazard Assessment