ISO 1391-5:1981 PDF
Paraformaldehyde for industrial use — Methods of test — Determination of aldehyde content — Titrimetric method
Open preview (PDF)Paraformaldehyde for industrial use — Methods of test — Determination of aldehyde content — Titrimetric methodTitle (English):
ISO 1391-5:1981
Paraformaldehyde for industrial use — Methods of test — Determination of aldehyde content — Titrimetric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- May 1, 1981
- Edition:
- ISO IS 1391 edition 1 version 1
- ICS:
- 71.080.80
Description (English):
The method is applicable to solid paraformaldehyde of aldehyde contents in the range 67 % (m/m) to 97 % (m/m). The principle consists in the reaction of aldehyde present in a test portion with neutralized sodium sulphite solution. Titration of the liberated sodium hydroxide with sulphuric acid solution using thymolphthalein as indicator. - This document has also been approved by the IUPAC.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 1391-5:1981
