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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.
1.1 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.
Acetyl Propionyl or Butyryl Contents
Acetyl Content, Apparent
Color and Haze
Hydroxyl Content, Primary
Sulfur or Sulfate Content
Limiting Viscosity Number
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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 Number Code 85.040 (Pulps)
UNSPSC Code 12352200(Biochemicals)
ASTM D817-12, Standard Test Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top