Substance Identity
CAS Number 1330-20-7
Chemical Name Benzene, dimethyl-
Type of substance Organic
SMILES Cc1ccccc1C
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 Experiment
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 0.6355
TOPKAT probability of biodegradation 0.784
Experimental Ozone Reaction half-life (days) 16,369.0476190476
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) 999
Experimental Atmospheric Oxidation half-life (days) 0.780616382806164
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) 1.643

Underlying data regarding Bioaccumulation

Empirical Log Kow 3.12
Log Kow predicted by KowWin 3.09
Log BAF T2MTL predicted by Gobas 1.93583917398889
Log BCF 5% T2LTL predicted by Gobas 1.8332458418247
Log BCF Max predicted by OASIS 2.47346966210044
Log BCF predicted by BCFWIN 1.702

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 7.4
Experimental result iT (mg/l) 7.4
Test species iT (Latin) Palaemonetes pugio
Test species iT (Common) Daggerblade grass shrimp
Final EndPoint iT LC50
Exposure duration iT (hours) 96
Reference iT Estuarine Coastal Mar.Sci. 6(4):365-373
Robust Study Summary iT
1330207-AT-LC50-I-bracal.doc
1330207-AT-LC50-I-brapli.doc
1330207-AT-LC50-F-oncmyk.doc
1330207-AT-LC50-I-palpug-2.rtf
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 7.6
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 7.437
Toxicity to fish (LC50 in mg/l) as predicted by Aster 8.020285
Toxicity to fish (LC50 in mg/l) as predicted by PNN 13.75066
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 4.1
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 0.985
Chronic toxicity to daphnia or algae (EC50 in mg/l) as predicted by Ecosar v0.99g 0.71
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 7.44E+000

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


Underlying data regarding Complex Hazard Assessment