ISO 2993:1974
ISO 2993:1974 Ammonium sulphate for industrial use – Determination of free acidity – Titrimetric method
CDN $82.00
Description
Applicable to products having a free acidity, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Dissolution of a test portion in Water and titration with standard volumetric sodium hydroxide solution in the presence of an indicator. The indicator must have a colour change in the pH range between 5.2 and 5.6. Has also been approved by the IUPAC.
Edition
1
Published Date
1974-04-01
Status
PUBLISHED
Pages
2
Language
English
Format
Secure PDF
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Abstract
Applicable to products having a free acidity, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Dissolution of a test portion in Water and titration with standard volumetric sodium hydroxide solution in the presence of an indicator. The indicator must have a colour change in the pH range between 5.2 and 5.6. Has also been approved by the IUPAC.
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