Substance Identity
CAS Number 10169-02-5
Chemical Name [1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-bis[(2-hydroxy-1-naphthalenyl)azo]-, disodium salt
Type of substance Organic
SMILES c12c(N=Nc3cc(S(=O)(=O)O)c(c4c(S(=O)(=O)O)cc(N=Nc5c6ccccc6ccc5O)cc4)cc3)c(O)ccc1cccc2
Moiety of concern organic
Categorization Results

Meets Government of Canada Categorization Criteria? Yes
Meets Human Health Categorization Criteria? No
Meets Environmental Criteria for Categorization? Yes
Persistent (P)? Yes
Rational for P Category
Bioaccumulative (B)? No
Rational for B QSAR
Inherently Toxic to Aquatic Organisms (iT)? Yes
Rational for iT QSAR
DSL Quantity range (tonnes/year) 0 to 1T
Basis for Environment Categorization (PiT, BiT, PBiT) if categorized? PiT

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) 182
MITI probability of biodegradation 0
EPI Predicted Ozone reaction half-life (days) 999
EPI Predicted Atmospheric Oxidation half-life (days) 0.3004

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 3.42247604221041
Log BCF predicted by BCFWIN 1.75

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 0.074
Toxicity to fish (LC50 in mg/l) as predicted by Aster 0.786157
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 0.074
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 7.37E-004

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