Substance Identity
CAS Number 107-22-2
Chemical Name Ethanedial
Type of substance Organic
SMILES O=CC=O
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) >1T to 1000T

Ecological data supporting decisions

Underlying data regarding persistence

Media of concern leading to Categorization Air-Water
Experimental Biodegradation half-life (days) Not Available
Experimental Biodegradation result (%) 65
Reference (biodegradation result) CHEMICALS INSPECTION AND TESTING INSTITUTE.; BIODEGRADATION AND BIOACCUMULATION DATA OF EXISTING CHEMICALS BASED ON THE CSCL JAPAN.; JAPAN CHEMICAL INDUSTRY ECOLOGY - TOXICOLOGY AND INFORMATION CENTER.ISBN 4-89074-101-1.; 1992
Robust Study Summary (biodegradation result)
MITI book - P data.doc
Predicted Ultimate degradation half-life (days) 15
MITI probability of biodegradation 0.9982
TOPKAT probability of biodegradation 1
EPI Predicted Ozone reaction half-life (days) 999
Experimental Atmospheric Oxidation half-life (days) 0.938109161793372
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)
107222.doc
EPI Predicted Atmospheric Oxidation half-life (days) 0.4225

Underlying data regarding Bioaccumulation

Log Kow predicted by KowWin -1.66
Log BAF T2MTL predicted by Gobas 0.0000540371955876
Log BCF 5% T2LTL predicted by Gobas 0.0005144646215092
Log BCF Max predicted by OASIS 0.947482321351912
Log BCF predicted by BCFWIN 0.5

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 10.4
Toxicity to fish (LC50 in mg/l) as predicted by PNN 100.0822
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 10.4
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 49,980.992
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 1.19E+003

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

AgencyAssessment
EC Genotoxicity - Category 3

Underlying data regarding Complex Hazard Assessment