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    ASTM D817 - 12

    Standard Test Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate

    Active Standard ASTM D817 | Developed by Subcommittee: D01.36

    Book of Standards Volume: 06.03

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    Significance and Use

    7.1 Ash content gives an estimate of the inorganic content of cellulose ester samples. The presence of high levels of inorganic content (ash) can be detrimental to the melt stability and optical clarity of a cellulose ester in melt processing or act as a potential source of insolubles when the ester is used in solution.

    1. Scope

    1.1 These test methods cover procedures for the testing of cellulose acetate propionates and acetate butyrates. These esters may vary widely in composition and properties, so certain of the procedures can be used only in the ranges of composition where they are suitable.

    1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

    1.3 The test procedures appear in the following sections:


    Acetyl Propionyl or Butyryl Contents


    Acetyl Content, Apparent


    Acidity, Free




    Color and Haze


    Heat Stability


    Hydroxyl Content


    Hydroxyl Content, Primary


    Intrinsic Viscosity


    Moisture Content


    Sulfur or Sulfate Content




    Limiting Viscosity Number


    1.4 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D618 Practice for Conditioning Plastics for Testing

    D1343 Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method

    D2929 Test Method for Sulfur Content of Cellulosic Materials by X-Ray Fluorescence

    D5897 Test Method for Determination of Percent Hydroxyl on Cellulose Esters by Potentiometric Titration--Alternative Method

    ICS Code

    ICS Number Code 85.040 (Pulps)

    UNSPSC Code

    UNSPSC Code 12352200(Biochemicals)

    Referencing This Standard

    DOI: 10.1520/D0817-12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D817-12, Standard Test Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate, ASTM International, West Conshohocken, PA, 2012,

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