ISO 2227:1972

Formaldehyde solutions for industrial use — Determination of formaldehyde content

Publication date: Dec 1, 1972

General information

Current stage: 90.93 Effective date: Oct 20, 2023

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.080.80

Languages: French English

Buying

Status: Published

PDF - ALL 4,749

Paper - ALL 4,749

CD - ALL 4,749

Language

Language in which you want to receive the document.

Scope

The specified method is applicable to HCHO contents between 25 5 and 45 %. The field of application may be extended by siutably modifying the mass of the test portion. The principle consists in the reaction of the test solution with a neutral sodium sulphite solution, and acidimetric titration of the liberated sodium hydroxide in presence of thymolphthalein as indicator.

Life cycle

NOW

PUBLISHED
ISO 2227:1972
90.93 Standard confirmed
Oct 20, 2023

Preview

Only informative sections of projects are publicly available. To view the full content, you will need to members of the committee. If you are a member, please log in to your account by clicking on the "Log in" button.