Substance Identity
CAS Number 1639-66-3
Chemical Name Butanedioic acid, sulfo-, 1,4-dioctyl ester, sodium salt
Type of substance Organic
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 QSAR
Bioaccumulative (B)? No
Rational for B QSAR
Inherently Toxic to Aquatic Organisms (iT)? Yes
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 Water
Experimental Biodegradation half-life (days) Not Available
Predicted Ultimate degradation half-life (days) 8.67
MITI probability of biodegradation 0.832
EPI Predicted hydrolysis half-life (days) 3.51E+003
EPI Predicted Ozone reaction half-life (days) 999
EPI Predicted Atmospheric Oxidation half-life (days) 0.4967

Underlying data regarding Bioaccumulation

Log Kow predicted by KowWin 4.1
Log BAF T2MTL predicted by Gobas 2.99361857241513
Log BCF 5% T2LTL predicted by Gobas 2.80442427260908
Log BCF Max predicted by OASIS 3.41735063733024
Log BCF predicted by BCFWIN 1.85

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 0.115
Toxicity to fish (LC50 in mg/l) as predicted by PNN 6.10921
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 0.115
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 1.15E-003

Human Health data supporting decisions
Underlying data regarding potential for exposure

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

Underlying data regarding Previous Assessments

Underlying data regarding Simple Hazard Assessment

Underlying data regarding Complex Hazard Assessment