ASTM D817 - 12(2019)

    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

    28 – 37

    Acetyl Content, Apparent

    18 – 27

    Acidity, Free

    12 – 17


    7 – 10

    Color and Haze

    77 – 81

    Heat Stability

    57 – 65

    Hydroxyl Content

    38 – 44

    Hydroxyl Content, Primary

    46 – 50

    Intrinsic Viscosity

    67 – 71

    Moisture Content


    Sulfur or Sulfate Content

    51 – 56



    Limiting Viscosity Number

    67 – 71

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

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    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
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D0817-12R19

    Citation Format

    ASTM D817-12(2019), Standard Test Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate, ASTM International, West Conshohocken, PA, 2019,

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