Substance Identity
CAS Number 110-03-2
Chemical Name 2,5-Hexanediol, 2,5-dimethyl-
Type of substance Organic
SMILES OC(CCC(O)(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 QSAR
Bioaccumulative (B)? No
Rational for B QSAR
Inherently Toxic to Aquatic Organisms (iT)? No
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) 37.5
MITI probability of biodegradation 0.5097
TOPKAT probability of biodegradation 0
EPI Predicted Ozone reaction half-life (days) 999
EPI Predicted Atmospheric Oxidation half-life (days) 0.9655

Underlying data regarding Bioaccumulation

Log Kow predicted by KowWin 1.52
Log BAF T2MTL predicted by Gobas 0.481234039586574
Log BCF 5% T2LTL predicted by Gobas 0.421216465450095
Log BCF Max predicted by OASIS 1.45592458353618
Log BCF predicted by BCFWIN 0.474

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 7200
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 7,200
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 306.366
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 2,502.8923
Toxicity to fish (LC50 in mg/l) as predicted by Aster 4,766.563
Toxicity to fish (LC50 in mg/l) as predicted by PNN 162.89682
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 14.1
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 124.463
Chronic toxicity to daphnia or algae (EC50 in mg/l) as predicted by Ecosar v0.99g 13.202
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 3.06E+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