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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 1061:1990

ISO 1061:1990 Plastics – Unplasticized cellulose acetate – Determination of free acidity

CDN $85.00

SKU: 642342c4e628 Category:

Description

The free acidity determined by this method includes acidity extractable by water and acidity due to acidic groups directly attached to the cellulose acetate, e.g. carboxyl groups. This method is not suitable for cellulose acetate containing any additives which may affect the test. The principle consists in treating a test portion of cellulose acetate with water and titrating the resultant solution with sodium hydroxide solution. The free acidity is calculated as the percentage, by mass, of free acetic acid in the cellulose acetate. This second edition cancels and replaces the first edition ISO 1061:1975, of which it constitutes a minor technical revision.

Edition

2

Published Date

1990-11-08

Status

PUBLISHED

Pages

2

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

The free acidity determined by this method includes acidity extractable by water and acidity due to acidic groups directly attached to the cellulose acetate, e.g. carboxyl groups. This method is not suitable for cellulose acetate containing any additives which may affect the test. The principle consists in treating a test portion of cellulose acetate with water and titrating the resultant solution with sodium hydroxide solution. The free acidity is calculated as the percentage, by mass, of free acetic acid in the cellulose acetate. This second edition cancels and replaces the first edition ISO 1061:1975, of which it constitutes a minor technical revision.

Previous Editions

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