ISO 2993:1974 PDF

ISO 2993:1974 PDF

Name:
ISO 2993:1974 PDF

Published Date:
04/01/1974

Status:
Active

Description:

Ammonium sulphate for industrial use -- Determination of free acidity -- Titrimetric method

Publisher:
International Organization for Standardization

Document status:
Active

Format:
Electronic (PDF)

Delivery time:
10 minutes

Delivery time (for Russian version):
200 business days

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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.


File Size : 1 file , 170 KB
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 2
Published : 04/01/1974

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