Substance Identity
CAS Number 50-00-0
Chemical Name Formaldehyde
Type of substance Organic
SMILES O=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 Experiment
Bioaccumulative (B)? No
Rational for B QSAR
Inherently Toxic to Aquatic Organisms (iT)? Yes
Rational for iT Experiment
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 0.9879
TOPKAT probability of biodegradation 1
Experimental Ozone Reaction half-life (days) 5,456,349.20634921
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) 999
Experimental Atmospheric Oxidation half-life (days) 1.14134946045298
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) 1.316

Underlying data regarding Bioaccumulation

Empirical Log Kow 0.35
Log Kow predicted by KowWin 0.35
Log BAF T2MTL predicted by Gobas 0.0327482512769241
Log BCF 5% T2LTL predicted by Gobas 0.0266022647772847
Log BCF Max predicted by OASIS 1.10916587981279
Log BCF predicted by BCFWIN 0.5

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 0.3
Experimental result iT (mg/l) 0.3
Test species iT (Latin) Crassostrea virginica
Test species iT (Common) American or virginia oyster
Final EndPoint iT EC50
Exposure duration iT (hours) 48
Reference iT Environmental Fate and Effects Division, U.S.EPA, Washington, D.C.
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 36.4
Toxicity to fish (LC50 in mg/l) as predicted by Aster 13.536351
Toxicity to fish (LC50 in mg/l) as predicted by PNN 42.09174
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 33.9
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 430.284
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 7.92E+000

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

Previous assessment through previous CEPA assessment

Underlying data regarding Simple Hazard Assessment

AgencyAssessment
IARC Carcinogenicity - Group 1
USEPA 1986 Carcinogenicity - Groups B1 and B2
NTP Carcinogenicity - Reasonably anticipated to be a human carcinogen
EC Carcinogenicity - Category 3

Underlying data regarding Complex Hazard Assessment