Substance Identity
CAS Number 2321-07-5
Chemical Name Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3',6'-dihydroxy-
Type of substance Organic
SMILES O=C(OC(c(c(Oc1cc(O)cc2)cc(O)c3)c3)(c12)c4cccc5)c45
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) 0 to 1T

Ecological data supporting decisions

Underlying data regarding persistence

Media of concern leading to Categorization Water-Soil
Experimental Biodegradation half-life (days) Not Available
Predicted Ultimate degradation half-life (days) 37.5
MITI probability of biodegradation 0.327
EPI Predicted Ozone reaction half-life (days) 999
EPI Predicted Atmospheric Oxidation half-life (days) 0.05341

Underlying data regarding Bioaccumulation

Log Kow predicted by KowWin 3.35
Log BAF T2MTL predicted by Gobas 2.17127968850332
Log BCF 5% T2LTL predicted by Gobas 2.06047690295296
Log BCF Max predicted by OASIS 2.70720553866155
Log BCF predicted by BCFWIN 1.88

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 3.05948
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 7.194
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 10.6401
Toxicity to fish (LC50 in mg/l) as predicted by Aster 11.748788
Toxicity to fish (LC50 in mg/l) as predicted by PNN 3.05948
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 0.5953
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 10.539
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 1.33E-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


Underlying data regarding Complex Hazard Assessment