ISO 2993:1974
ISO · 1974-04
Ammonium sulphate for industrial use; Determination of free acidity; Titrimetric method
ICS 71.060.50
Cited by 3
1Key Takeaways
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. Ha…
2Scope / 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.
3Version History
ISO 2993:1974
1974-04
5Citation Network
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6Frequently Asked Questions
What is ISO 2993:1974?
ISO 2993:1974 — Ammonium sulphate for industrial use; Determination of free acidity; Titrimetric method is an international standard developed by International Organization for Standardization (ISO). 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...
What does ISO 2993:1974 cover?
This standard covers: 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...
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of ISO 2993:1974?
The current published version is ISO 2993:1974, published on 1974-04. Always check for amendments or pending revisions.
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