Substance Identity
CAS Number 5350-57-2
Chemical Name Methanone, diphenyl-, hydrazone
Type of substance Organic
SMILES N(N)=C(c(cccc1)c1)c(cccc2)c2
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) 0 to 1T

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) 15
MITI probability of biodegradation 0.1258
EPI Predicted Ozone reaction half-life (days) 999
EPI Predicted Atmospheric Oxidation half-life (days) 1.245

Underlying data regarding Bioaccumulation

Empirical Log Kow 2.79
Log Kow predicted by KowWin 3.31
Log BAF T2MTL predicted by Gobas 1.60554154582805
Log BCF 5% T2LTL predicted by Gobas 1.51028179351628
Log BCF Max predicted by OASIS 2.67335218001596
Log BCF predicted by BCFWIN 1.448

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 0.3266
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 0.3266
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 0.206
Toxicity to fish (LC50 in mg/l) as predicted by PNN 10.8651
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 2.2
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 19.046
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 8.54E-002

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