Substance Identity
CAS Number 504-29-0
Chemical Name 2-Pyridinamine
Type of substance Organic
SMILES n(c(N)ccc1)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)? Yes
Rational for P Experiment
Bioaccumulative (B)? No
Rational for B Experiment
Inherently Toxic to Aquatic Organisms (iT)? No
Rational for iT Experiment
DSL Quantity range (tonnes/year) 0 to 1T

Ecological data supporting decisions

Underlying data regarding persistence

Media of concern leading to Categorization Water
Experimental Biodegradation half-life (days) Not Available
Experimental Biodegradation result (%) 0
Reference (biodegradation result) CHEMICALS INSPECTION AND TESTING INSTITUTE.; BIODEGRADATION AND BIOACCUMULATION DATA OF EXISTING CHEMICALS BASED ON THE CSCL JAPAN.; JAPAN CHEMICAL INDUSTRY ECOLOGY - TOXICOLOGY AND INFORMATION CENTER.ISBN 4-89074-101-1.; 1992
Robust Study Summary (biodegradation result)
MITI book - P data.doc
Predicted Ultimate degradation half-life (days) 37.5
MITI probability of biodegradation 0.1983
TOPKAT probability of biodegradation 0
EPI Predicted Ozone reaction half-life (days) 999
EPI Predicted Atmospheric Oxidation half-life (days) 0.5236

Underlying data regarding Bioaccumulation

Empirical Log Kow 0.48
Reference (Log Kow) HANSCH,C & LEO,AJ (1985)
Log Kow predicted by KowWin 0.53
Log BAF T2MTL predicted by Gobas 0.0521705856234699
Log BCF 5% T2LTL predicted by Gobas 0.0425792638075664
Log BCF Max predicted by OASIS 1.14434802656746
Log BCF predicted by BCFWIN 0.5
Experimental BCF (log) 0.955672770639501
Reason for pivotal value Average Vertebrate BCF
Test species BCF/BAF (Latin) Cyprinus carpio
Test species BCF/BAF (Common) Common carp
Mean water concentration (ug/l) 100
Mean water concentration (comment) Below water solubility by a factor of 5
Water concentration: Measured/Nominal/Uncertain Measured
RadioLabel No
Exposure duration (days) 42
Exposure duration (comment) Sufficient exposure duration for 80% steady state; "Reported steady state"
Exposure type Flow-through
Mean temperature (deg. Celcius) 22
Exposure route Water (but fed)
Exposure media Fresh Water
Mean measured lipid content (%) 5
Tissue analysed Whole body
Calculation method Cb/Cw
Comment (BAF/BCF) Average BCF; Apparent measured water concentrations; Reported "Steady state"
Reference (BAF/BCF) Chemicals Evaluation and Research Institute. 1992. Biodegradation and Bioconcentration of Existing Chemical Substances under the Chemical Substances Control Law. http://qsar.cerij.or.jp/cgi-bin/DEGACC/index.cgi?e

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 6
Experimental result iT (mg/l) 6
Test species iT (Latin) Oryzias latipes
Test species iT (Common) Medaka, high-eyes
Final EndPoint iT LC50
Exposure duration iT (hours) 48
Reference iT J.Toxicol.Sci. 7(3):193-203
Robust Study Summary iT
504290-AT-LC50-F-Orylat.doc
Toxicity to fish (LC50 in mg/l) as predicted by Ecosar v0.99g 345.142
Toxicity to fish (LC50 in mg/l) as predicted by Oasis Forecast M v1.10 5,575.6055
Toxicity to fish (LC50 in mg/l) as predicted by Aster 299.891094
Toxicity to fish (LC50 in mg/l) as predicted by PNN 330.65918
Toxicity to daphnia (EC50 in mg/l) as predicted by Topkat v6.1 4.4
Toxicity to fish, daphnia, algae or mysid shrimp (EC50 or LC50 in mg/l) as predicted by Ecosar v0.99g 295.14
Toxicity to fish (LC50 in mg/l) as predicted by Neutral Organics QSAR in Ecosar v0.99g 1.68E+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