1Key Takeaways
Method for determination of the titre; this is expressed conventionally as percentages by mass of NaOH, a) as total alkalinity and b) as caustic alkalinity, corresponding to the total alkalinity less the alkalinity due to carbonates. The principle consists in titration of the total alkalinity with standard volumetric h…
2Scope / Description
Method for determination of the titre; this is expressed conventionally as percentages by mass of NaOH, a) as total alkalinity and b) as caustic alkalinity, corresponding to the total alkalinity less the alkalinity due to carbonates. 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 two amounts a) and b). The mass of carbon dioxide is determined by the method specified in ISO 3196. This method has also been approved by the IUPAC. - Cancels and replaces ISO Recommendation R 979-1969 of which it constitutes a technical revision.
5Citation Network
Standards that cite ISO 979:1974
6Frequently Asked Questions
What is ISO 979:1974?
ISO 979:1974 — Sodium hydroxide for industrial use; Method of assay is an international standard developed by International Organization for Standardization (ISO). Method for determination of the titre; this is expressed conventionally as percentages by mass of NaOH, a) as total alkalinity and b) as caustic alkalinity, corresponding to the total alkalinity less the alkalinity due to carbonates. The principle...
What does ISO 979:1974 cover?
This standard covers: Method for determination of the titre; this is expressed conventionally as percentages by mass of NaOH, a) as total alkalinity and b) as caustic alkalinity, corresponding to the total alkalinity less the alkalinity due to carbonates. The principle consists in titration of the total alkalinity with...
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 979:1974?
The current published version is ISO 979:1974, published on 1974-12. Always check for amendments or pending revisions.
How do I purchase ISO 979:1974?
You can purchase ISO 979:1974 by visiting our contact page. Click "Get This Standard" to view pricing and send a purchase inquiry. Our team will respond with payment and delivery details.