Substance Identity
CAS Number 106-99-0
Chemical Name 1,3-Butadiene
Type of substance Organic
SMILES C(C=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 0.7568
Experimental Ozone Reaction half-life (days) 1.41460905349794
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) 1.415
Experimental Atmospheric Oxidation half-life (days) 0.160577243910577
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) 0.1606

Underlying data regarding Bioaccumulation

Empirical Log Kow 1.99
Log Kow predicted by KowWin 2.03
Log BAF T2MTL predicted by Gobas 0.852314648071563
Log BCF 5% T2LTL predicted by Gobas 0.773224875830532
Log BCF Max predicted by OASIS 1.71061875565659
Log BCF predicted by BCFWIN 0.832

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 92.1
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 92.1
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 37.578
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 84.629
Toxicity to fish (LC50 in mg/l) as predicted by Aster 49.826387
Toxicity to fish (LC50 in mg/l) as predicted by PNN 8.04857
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 10.608
Chronic toxicity to daphnia or algae (EC50 in mg/l) as predicted by Ecosar v0.99g 2.097
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 3.76E+001

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 2A
NTP Carcinogenicity - Known to be a human carcinogen
USEPA 2003 Carcinogenicity - Carcinogenic to humans
EC Genotoxicity - Category 2
EC Carcinogenicity - Category 1

Underlying data regarding Complex Hazard Assessment