Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
other: Weight of evidence
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Justification for type of information:
According to the REACH Regulation, the study does not need to be conducted if the substance has a low potential for bioaccumulation (Annex IX, Column 2 adaptation). Potassium hydroxide is a strong alkaline substance that dissociates completely in water to K+ and OH-. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound that dissociates. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound which dissociates (OECD SIDS potassium hydroxide, 2002).

Data source

Reference
Reference Type:
publication
Title:
SIDS Initial Assessment Report KOH
Author:
SIDS
Year:
2002
Bibliographic source:
SIDS
Report date:
2002

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
According to the REACH Regulation, the study does not need to be conducted if the substance has a low potential for bioaccumulation (Annex IX, Column 2 adaptation). Potassium hydroxide is a strong alkaline substance that dissociates completely in water to K+ and OH-. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound that dissociates. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound which dissociates (OECD SIDS potassium hydroxide, 2002).

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium hydroxide
EC Number:
215-185-5
EC Name:
Sodium hydroxide
Cas Number:
1310-73-2
Molecular formula:
HNaO
IUPAC Name:
sodium hydroxide

Results and discussion

Bioaccumulation factor
Type:
BCF
Remarks on result:
other: see remarks
Remarks:
According to the REACH Regulation, the study does not need to be conducted if the substance has a low potential for bioaccumulation (Annex IX, Column 2 adaptation). Potassium hydroxide is a strong alkaline substance that dissociates completely in water to K+ and OH-. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound that dissociates. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound which dissociates (OECD SIDS potassium hydroxide, 2002).

Applicant's summary and conclusion

Conclusions:
According to the REACH Regulation, the study does not need to be conducted if the substance has a low potential for bioaccumulation (Annex IX, Column 2 adaptation). Potassium hydroxide is a strong alkaline substance that dissociates completely in water to K+ and OH-. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound that dissociates. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound which dissociates (OECD SIDS potassium hydroxide, 2002).
Executive summary:

According to the REACH Regulation, the study does not need to be conducted if the substance has a low potential for bioaccumulation (Annex IX, Column 2 adaptation). Potassium hydroxide is a strong alkaline substance that dissociates completely in water to K+ and OH-. Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound that dissociates.  Considering its high water solubility, potassium hydroxide is not expected to bioconcentrate in organisms. Log Pow is not applicable for an inorganic compound which dissociates (OECD SIDS potassium hydroxide, 2002).