ASTM D1343-95(2011)
Standard Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method

Standard No.

ASTM D1343-95(2011)

Release Date

1995

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D1343-95(2019)

Latest

ASTM D1343-95(2019)

Scope

This test provides an easy method of determining the viscosity of cellulose derivatives in a given solvent. The answers are in units commonly used in industrial practice. Such information is needed for cellulose derivatives that are to be extruded, molded, sprayed, or brushed as is or in solution.

1.1 This test method describes the apparatus and general procedure for making ball-drop viscosity measurements on solutions of various cellulose derivatives. Instructions for sample preparation, solution concentration, and other details are discussed in the ASTM methods for the respective cellulose derivatives.

1.2 This test method is applicable to solutions of various cellulose derivatives having viscosities greater than 10 P, by using balls of various diameters and densities. Viscosity results are expressed preferably in poises.

1.3 In commercial practice, viscosities are often expressed in seconds using 2.38-mm (³/₃₂-in.) stainless steel balls. When the viscosity is outside the practical range for these balls (75 to 300 P), the measurement can be made using a calibrated pipet viscometer or a different ball and calculating the observed viscosity to the corresponding time for a 2.38-mm (³/₃₂-in.) ball, even though it is a small fraction of a second.

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

1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D1343-95(2011) Referenced Document

• ASTM D301 Standard Test Methods for Soluble Cellulose Nitrate
• ASTM D445 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)*， 1997-04-19 Update
• ASTM D817 Standard Test Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate*， 1996-04-19 Update
• ASTM D871 Standard Test Methods of Testing Cellulose Acetate*， 2019-01-01 Update
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method*， 1999-04-19 Update

ASTM D1343-95(2011) history

• 2019 ASTM D1343-95(2019) Standard Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method
• 1995 ASTM D1343-95(2011) Standard Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method
• 1995 ASTM D1343-95(2006) Standard Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method
• 1995 ASTM D1343-95(2000) Standard Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method