ISO 2993:1974, Ammonium sulphate for industrial use -- Determination of free acidity -- Titrimetric method
Book Details
Author(s)
ISO TC 47
ISBN / ASIN
B000Y2SU74
ISBN-13
978B000Y2SU79
Availability
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Sales Rank
#99,999,999
Marketplace
United States 🇺🇸
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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. This title may contain less than 24 pages of technical content.
