Substance Identity
CAS Number 86-73-7
Chemical Name 9H-Fluorene
Type of substance Organic
SMILES c(c(c(c1ccc2)c2)ccc3)(c3)C1
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 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 Air-Water-Soil
Experimental Biodegradation half-life (days) 46
Reference (biodegradation half-life) SRC 1999
Experimental Biodegradation result (%) 77
Reference (biodegradation result) TABAK,H.H.; QUAVE,S.A.; MASHNI,C.I.; BARTH,E.F.; BIODEGRADABILITY STUDIES WITH ORGANIC PRIORITY POLLUTANT COMPOUNDS.; J. WATER POLLUT. CONTR. FED.; 53:1503-18.; 1981
Robust Study Summary (biodegradation result)
86737.doc
Predicted Ultimate degradation half-life (days) 15
MITI probability of biodegradation 0.1921
TOPKAT probability of biodegradation 0
EPI Predicted Ozone reaction half-life (days) 999
Experimental Atmospheric Oxidation half-life (days) 0.822649572649573
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) 1.208

Underlying data regarding Bioaccumulation

Empirical Log Kow 4.18
Reference (Log Kow) HANSCH,C & LEO,AJ (1985)
Log Kow predicted by KowWin 4.02
Log BAF T2MTL predicted by Gobas 2.32314747529418
Log BCF 5% T2LTL predicted by Gobas 2.29777116740494
Log BCF Max predicted by OASIS 3.33987271526126
Log BCF predicted by BCFWIN 2.519
Experimental BCF (log) 3.16
Reason for pivotal value Highest Vertebrate BCF
Test species BCF/BAF (Latin) Scophthalmus maximus
Test species BCF/BAF (Common) Turbot
Mean water concentration (ug/l) 500
Mean water concentration (comment) Uncertain; below water solubility but within a factor of 5; no correction
Water concentration: Measured/Nominal/Uncertain Measured
RadioLabel No
Exposure duration (days) 21
Exposure duration (comment) Sufficient exposure duration for 80% steady state; K1/K2
Exposure type Flow-through
Mean temperature (deg. Celcius) 20
Exposure route Water (but fed)
Exposure media Salt Water
Mean measured lipid content (%) 3
Tissue analysed Whole body
Calculation method K1/K2
Comment (BAF/BCF) Exposed to dispersed North Sea crude oil
Reference (BAF/BCF) Baussant, T., Sanni, S., Skadshlim, A., Jonsson, G., Borseth, J.F. and Gaudebert, B.. 2001. Bioaccumulation of polycyclic aromatic compounds: 2. Modeling bioaccumulation in marine organisms chronically exposed to dispersed oil. Environmental Toxicology and Chemistry 20(6):1185-1201

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 0.212
Experimental result iT (mg/l) 0.212
Exposure duration iT (hours) 48
Robust Study Summary iT
86737-AT-EC50-I-Dappul.doc
Toxicity to fathead minnow (LC50 in mg/l) as predicted by Topkat v6.1 2.1
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 1.556
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 1.6857
Toxicity to fish (LC50 in mg/l) as predicted by Aster 2.409888
Toxicity to fish (LC50 in mg/l) as predicted by PNN 3.29534
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 31.7
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 0.106
Chronic toxicity to daphnia or algae (EC50 in mg/l) as predicted by Ecosar v0.99g 0.238
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 1.56E+000

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