ISO 1061:1990

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Plastics — Unplasticized cellulose acetate — Determination of free acidity

Published By	Publication Date	Number of Pages
ISO	1990-11	5

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Categories: 83.080.20 - Thermoplastic materials, ISO

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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.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1990-11
Pages Count	5
Language	English
Edition	2
File Size	215.0 KB
ICS Codes	83.080.20 - Thermoplastic materials

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ISO 1061:1990

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