Substance Identity
CAS Number 133-06-2
Chemical Name 1H-Isoindole-1,3(2H)-dione, 3a,4,7,7a-tetrahydro-2-[(trichloromethyl)thio]-
Type of substance Organic
SMILES O=C(N(SC(Cl)(Cl)Cl)C(=O)C1CC=CC2)C12
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 Experiment
Bioaccumulative (B)? No
Rational for B Experiment
Inherently Toxic to Aquatic Organisms (iT)? Yes
Rational for iT Experiment
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
Robust Study Summary (biodegradation half-life)
133062.doc
Experimental Biodegradation result (%) 70
Reference (biodegradation result) AGNIHOTRI,V.P.; PERSISTENCE OF CAPTAN (N-(TRICHLOROMETHYLTHIO)-4-CYCLOHEXENE-1,2-DICARBOXIMIDE) AND ITS EFFECT ON MICROFLORA, RESPIRATION AND NITRIFICATION OF A FOREST NURSERY SOIL.; CAN. J. MICROBIOL.; 17:377-83.; 1971
Predicted Ultimate degradation half-life (days) 60
MITI probability of biodegradation 0.0006
TOPKAT probability of biodegradation 0
Experimental Hydrolysis half-life (days) 11.67
Reference (hydrolysis) FRANK,R.; BRAUN,H.E.; STANEK,J.; REMOVAL OF CAPTAN FROM TREATED APPLES.; ARCH. ENVIRON. CONTAM. TOXICOL.; 12:265-9.; 1983
Robust Study Summary (hydrolysis)
133062.doc
EPI Predicted Ozone reaction half-life (days) 0.0573
EPI Predicted Atmospheric Oxidation half-life (days) 0.1221

Underlying data regarding Bioaccumulation

Empirical Log Kow 2.8
Reference (Log Kow) HANSCH,C & LEO,AJ (1985)
Log Kow predicted by KowWin 2.74
Log BAF T2MTL predicted by Gobas 1.61542797298268
Log BCF 5% T2LTL predicted by Gobas 1.51998777685237
Log BCF Max predicted by OASIS 2.19146269158762
Log BCF predicted by BCFWIN 1.456
Experimental BCF (log) 2.50737478978579
Reason for pivotal value Highest Average Vertebrate BCF
Test species BCF/BAF (Latin) Gnathopogon coerulescens
Test species BCF/BAF (Common) Willow shiner
Mean water concentration (ug/l) 0.16
Mean water concentration (comment) Below water solubility by a factor of 5
Water concentration: Measured/Nominal/Uncertain Measured
RadioLabel No
Exposure duration (days) 1
Exposure duration (comment) Insufficient exposure duration for 80% steady state; "Reported steady state"
Exposure type Flow-through
Mean temperature (deg. Celcius) 20
Exposure route Water (but fed)
Exposure media Fresh Water
Tissue analysed Whole body
Calculation method Cb/Cw
Comment (BAF/BCF) Exposed to three pesticides
Reference (BAF/BCF) Tsuda, T., S. Aoki, M. Kojima, and T. Fujita. 1992. Accumulation and Excretion of Pesticides Used in Golf-Courses by Carp (Cyprinus carpio) and Willow Shiner (Gnathopogon caerulescens).. Comp.Biochem.Physiol.C 101(1):63-66

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 0.034
Experimental result iT (mg/l) 0.034
Test species iT (Latin) Salvelinus fontilis
Test species iT (Common) Brook trout
Final EndPoint iT LC50
Exposure duration iT (hours) 96
Reference iT Environmental Fate and Effects Division, U.S.EPA, Washington, D.C.
Robust Study Summary iT
133062-AT-LC50-F-saltru.doc
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 0.0466
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 46.4578
Toxicity to fish (LC50 in mg/l) as predicted by Aster 105.733453
Toxicity to fish (LC50 in mg/l) as predicted by PNN 0.05345
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 91.502
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 4.49E+001

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

AgencyAssessment
EC Carcinogenicity - Category 3

Underlying data regarding Complex Hazard Assessment