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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
96 hours
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
No analysis has been performed and it should be noted in some publications that analysis was not possible due to an absence of the test material.  It is expected that the substance will rapidly hydrolyse to the respective alcohols and carbon disulphide. 
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 203 (Fish, Acute Toxicity Test)
Deviations:
not specified
GLP compliance:
not specified
Analytical monitoring:
not specified
Vehicle:
not specified
Test organisms (species):
Pimephales promelas
Test type:
static
Water media type:
freshwater
Limit test:
no
Post exposure observation period:
96 hour
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
ca. 32 mg/L
Nominal / measured:
not specified
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Validity criteria fulfilled:
not specified
Conclusions:
Toxicity is in the range expected when considering other tests on the same substance
Certain details lacking, but considered suitable for classification
Executive summary:

Study provided as part of a weight of evidence demonstrating moderate toxicity


No analysis has been performed and it should be noted in some publications that analysis was not possible due to an absence of the test material.  It is expected that the substance will rapidly hydrolyse to the respective alcohols and carbon disulphide. 

Description of key information

A number of fish studies have been reviewed and all demonstrate an LC50 in the range of 10 - 100 mg/l giving a reasonable weight of evidence for classification


The more reliable of these sources, and cited by other organisations, is LC50 32 mg/l

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Dose descriptor:
LC50
Effect concentration:
ca. 32 mg/L

Additional information

The listed toxicity on fish of different xanthates indicate that potassium ethyl xanthate (CAS# 140-89-6) is much more toxic than sodium ethyl xanthate (CSA# 140-90-9) and toxicity of the latest one is not much higher than sodium isobutyl xanthate. The toxicity decrease sharply with increasing temperature.