ASTM D1981-02(2006)
Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids

Standard No.

ASTM D1981-02(2006)

Release Date

2002

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D1981-11

Latest

ASTM D1981-11(2020)e1

Scope

The color of a tall oil fatty acid is readily affected by heat and oxidization. Variations in degree of heat, time of heat, and exposure to atmosphere during heating have a marked effect on the color obtained; therefore, conformity to the equipment and procedure outlined in this test method is essential to accuracy and precision.

1.1 This test method covers the measurement of the Gardner color of tall oil fatty acids after heating in an atmosphere of nitrogen at 205176;C for one or two h, depending on whether its iodine value is over or under 15, respectively. The specimen may be heated using either an aluminum heating block or an oil bath. This method is applicable to all tall oil fatty acids. Applicability of this method to other types of fatty acids has not been determined.

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 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 D1981-02(2006) Referenced Document

• ASTM D1544 Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
• ASTM D6166 Standard Test Method for Color of Naval Stores and Related Products (Instrumental Determination of Gardner Color)
• ASTM E1 Standard Specification for ASTM Thermometers

ASTM D1981-02(2006) history

• 2020 ASTM D1981-11(2020)e1 Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids
• 2011 ASTM D1981-11(2015) Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids
• 2011 ASTM D1981-11 Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids
• 2002 ASTM D1981-02(2006) Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids
• 2002 ASTM D1981-02 Standard Test Method for Measuring Color After Heating of Tall Oil Fatty Acids
• 1986 ASTM D1981-86(1995)e1 Standard Test Method for Measuring Color After Heating of Fatty Acids