Substance Identity
CAS Number 61789-51-3
Chemical Name Naphthenic acids, cobalt salts
Type of substance UVCB-organic-metal salt
Moiety of concern Co (Co+2)
Categorization Results

Meets Government of Canada Categorization Criteria? Yes
Meets Human Health Categorization Criteria? No
Meets Environmental Criteria for Categorization? Yes
Persistent (P)? Yes
Bioaccumulative (B)? Not Determined
Inherently Toxic to Aquatic Organisms (iT)? Yes
DSL Quantity range (tonnes/year) >1T to 1000T
Basis for Environment Categorization (PiT, BiT, PBiT) if categorized? PiT

Ecological data supporting decisions

Underlying data regarding persistence

Media of concern leading to Categorization Not Applicable
Experimental Biodegradation half-life (days) Not Available
Comment (persistency) moiety of concern is P

Underlying data regarding Bioaccumulation

Comment (BAF/BCF) Moiety of concern is B

Underlying data regarding inherent toxicity to aquatic organisms

Pivotal value for iT (mg/l) 0.016
Experimental result iT (mg/l) 0.016
Test species iT (Latin) Hyallela azteca
Final EndPoint iT LC50
Exposure duration iT (hours) 168
Comment iT tested in 10% Lake Ontario water based on measured concentrations of dissolved metal originating from AA standards and complex metal anions.
Reference iT Unpublished report. NWRI Laboratory. Dr Uwe Borgmann

Human Health data supporting decisions
Underlying data regarding potential for exposure

LPE/IPE/GPE Intermediate Potential for Exposure (HC Simple Exposure Tool)

Underlying data regarding Previous Assessments

Underlying data regarding Simple Hazard Assessment

Underlying data regarding Complex Hazard Assessment