ISO 182-4:1993

Plastics — Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 4: Potentiometric method

Publication date: Mar 25, 1993

General information

Current stage: 90.93 Effective date: Jun 11, 2020

Originator: ISO

Owner: ISO/TC 61/SC 9

Type: International Standard

ICS: 83.080.20

Languages: French English

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Status: Published

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Scope

The principle of the method is maintaining a test portion of the PVC at an agreed temperature in a nitrogen gas stream, absorbing the hydrogen chloride evolved in a given amount of an appropriate solution, and potentiometrically determining the amount of hydrogen chloride evolved in relation to the recorded change in pCl of the absorbing solution. The method is recommended for compounded PVC materials and products only, although it can be used for polymers in powder form under appropriate conditions.

Life cycle

PREVIOUSLY

Revises
ISO/R 182:1970

NOW

PUBLISHED
ISO 182-4:1993
90.93 Standard confirmed
Jun 11, 2020

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