BS 2782-5.553A(1991) : 1991 AMD 10600

Superseded

Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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METHODS OF TESTING PLASTICS - OPTICAL AND COLOUR PROPERTIES, WEATHERING - DETERMINATION OF LIGHT ABSORPTION OF CELLULOSE ACETATE, BEFORE AND AFTER FURTHER HEATING

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Superseded date: 15-11-1999

Language(s):

Published date: 23-11-2012

Publisher: British Standards Institution

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National foreword
Committees responsible
Method
1. Scope
2. Normative references
3. Principle
4. Reagents
5. Apparatus
6. Test sample
7. Procedure
8. Expression of results
9. Precision
10. Test report
Figure
1. Suitable mould

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Provides a method for determining light absorption of cellulose acetate using test specimens from two mouldings using different periods of heating to give quantitative measurements compatible with visual judgements of yellowness, lightness and changes in these properties after moulding. Carried out on plasticized form cellulose acetate rather than in solution, since a more reliable guide is obtained to its performance in plastics materials. Minimizes the effects of haze or imperfections. Suitable for cellulose acetate having an acetic acid yield of 54% plus or minus 2.5% and may also be satisfactory for other transparent plastics which are not strongly coloured and can be moulded under the specified conditions. BS AMD 10600 RENUMBERS THIS STANDARD

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Committee	PRM/21
Development Note	Renumbered and superseded by BS EN ISO 1600. (09/2005)
Document Type	Standard
ISBN
Pages
Published
Publisher	British Standards Institution
Status	Superseded
Superseded By	BS EN ISO 1600:1999

International Equivalents – Equivalent Standard(s) & Relationship - (Show below) - (Hide below)

Equivalent Standard(s)	Relationship
ISO 1600:1990	Identical

Standards Referenced By This Book - (Show below) - (Hide below)

BS 7825-3.5:1997	Calibration of rubber and plastics test equipment. Calibration schedules Optical and weathering properties

Standards Referencing This Book - (Show below) - (Hide below)

ISO 565:1990	Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings
ISO 585:1990	Plastics Unplasticized cellulose acetate Determination of moisture content

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