Skip to main content

ISO 990:1973

Withdrawn Date published:

Warning: Withdrawn Standard. This document has been withdrawn without replacement. You may wish to search for a more up to date equivalent.

Potassium hydroxide for industrial use — Method of assay

Method for determination of the titre, conventionally expressed as percentages by mass of KOH. There are three ways: a) total alkalinity, b) caustic alkalinity corresponding to the total alkalinity less the alkalinity due to carbonates and c) actual potassium hydroxide corresponding to the total alkalinity less the alkalinity due to carbonates and any hydroxide which may be present. The principle consists in titration of the total alkalinity with standard volumetric hydrochloric acid solution in the presence of methyl orange as indicator. Calculation of the three amounts a), b), and c). - Replaces ISO Recommendation R 990-1969.

Get this standard Prices exclude GST
PDF ( Single user document)
$91.24 NZD
HardCopy
$91.24 NZD
Networkable PDF
Price varies
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Pages: 2

Keep me up-to-date

Sign up to receive updates when there are changes to this standard

Related Information

Similar Standards

  • BS 4130:1984

    Specification for sodium hydroxide (technical grades)

  • BS 4651-0:1987

    Ammonia solution, Methods for sampling

  • BS 4651-1:1988

    Ammonia solution, Method for determination of density at 20°C

  • BS 4651-2:1987

    Ammonia solution, Method for determination of ammonia content

Preview only close
Prev {{ page }}/ {{ numPages }} Next
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Pages: 2

ISO 990:1973

Get this standard Prices exclude GST
PDF ( Single user document)
$91.24 NZD
HardCopy
$91.24 NZD
Networkable PDF
Price varies

Request to add this standard to your subscription

ISO 990:1973

Price varies
Online library subscription

Click "Send request for subscription" to request for your Account Administrator to add this standard to your subscripiton.

Cancel