Registration Dossier

Environmental fate & pathways

Additional information on environmental fate and behaviour

Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
other: Published data
Adequacy of study:
weight of evidence
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 OECD SIDS document for potassium hydroxide (30 January 2002), a Klimisch 2 reliability score was assigned since the study is well documented, meets generally accepted scientific principles and is acceptable for assessment.

Data source

Reference
Reference Type:
review article or handbook
Title:
Industrial Inorganic Chemicals and Products
Author:
Ullmann
Year:
1998
Bibliographic source:
Ullmann's Encyclopedia, Vol. 5, p 3831

Materials and methods

Principles of method if other than guideline:
The study is well documented, meets generally accepted scientific principles and is acceptable for assessment.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

With a global potash production of 29.341.000 tons K2O, or 24.357.391 tons K in 1989, and an estimated potassium hydroxide production that not exceeded 800.000 tons that year, or 557.476 tons K (Ullmann, 1998), and taking into account that no more than 11% of the K from potassium hydroxide could be discharged to the environment (see section 3.5 Identified Uses and exposure scenarios: 5% wide dispersive use + 6% in alkaline batteries; the rest is transformed in industrial uses; personal communnication from Occidental Chem. Corp. in 2000), not more than 61.322 tons K coming directly from potassium hydroxide reaches the environment, or 0.25% of the total anthropogenic potassium.

Applicant's summary and conclusion

Conclusions:
Production of potassium hydoxide results in release of potassium which is negligable in comparison of the global anthropogenic potassium.