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  • ASTM
    D817-12 Standard Test Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate
    Edition: 2012
    $103.58
    Unlimited Users per year

Description of ASTM-D817 2012

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




ASTM D817

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:

Sections

Acetyl Propionyl or Butyryl Contents

28- 37

Acetyl Content, Apparent

18- 27

Acidity, Free

12- 17

Ash

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

5 - 6

Sulfur or Sulfate Content

51- 56

Viscosity

74 - 75

Limiting Viscosity Number

67- 71


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


Keywords

apparent acetyl; ash; cellulose acetate butyrate; cellulose acetate propionate; cellulose esters; color; free acidity; haze; hydroxyl; limiting; partition; sulfate content; viscosity;


ICS Code

ICS Number Code 85.040 (Pulps)


DOI: 10.1520/D0817-12

ASTM International is a member of CrossRef.

ASTM D817

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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