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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
supporting study
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
significant methodological deficiencies
Remarks:
Adopted according to OECD SIDS; Test duration only 48 h which is not in line with standard methods.
Qualifier:
according to guideline
Guideline:
other: DIN 38412 Teil 15
GLP compliance:
no
Analytical monitoring:
no
Vehicle:
not specified
Test organisms (species):
Leuciscus idus melanotus
Test type:
not specified
Water media type:
not specified
Limit test:
no
Total exposure duration:
48 h
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
346 mg/L
Nominal / measured:
not specified
Conc. based on:
test mat.
Basis for effect:
mortality (fish)

Description of key information

Key value for chemical safety assessment

Additional information

In water, sodium methanolate rapidly hydrolyses to methanol and sodium hydroxide (OECD, 2002). Due to the rapid hydrolysis of sodium methanolate, the assessment of the aquatic toxicity is based on the products of hydrolysis i.e. methanol and sodium hydroxide.

In addition to the available studies on methanol, one study is available investigating the effects of the parent substance sodium methanolate to fish (Study director, 1988; Leuciscus idus melanotus). The study was performed according to DIN 38412, part 15 and resulted in a LC50 (48 h) of 346 mg/L. However, this study was rated RL3 since the test duration was only 48 h instead of 96 h, which is the standard test duration in today’s guidelines.

In conclusion, the data available for the degradation products of sodium methanolate (methanol and sodium hydroxide) are sufficient to assess the environmental hazard instead of the parent substance itself. Sodium methanolate is of low toxicity to aquatic species as shown in all studies.