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ASTM D1963

1985 Edition, 1985

Complete Document

Standard Test Method for Specific Gravity of Drying Oils, Varnishes, Resins, and Related Materials at 25/25 Degrees C

Includes all amendments and changes through Reapproval Notice , 1996

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Product Details:

  • Revision: 1985 Edition, 1985
  • Published Date: January 1996
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 4
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

1. Scope

1.1 This test method covers the determination of the specific gravity of drying oils, varnishes, alkyd resins, fatty acids, and related materials.

1.2 This test method is recommended where precision is required in the determination of specific gravity, such as establishing specifications or referee work.

1.2.1 For materials with a kinematic viscosity of 40 stokes or less, use the Leach type pycnometer.

1.2.2 For materials with a viscosity in excess of 40 stokes, use the Hubbard-type pycnometer.

1.2.3 For materials that are solid or semisolid at 25°C but liquid at slightly higher temperatures, use the Hubbard-type pycnometer.

NOTE 1--The weight per gallon cup method is satisfactory for most routine laboratory work although the precision does not equal that of the pycnometer method. The test method described herein for use with the Hubbard-type pycnometer is applicable to the weight per gallon cup method, or Test Method D 1475 may be used.

NOTE 2--Hydrometers also provide a rapid method for checking specific gravity and are generally satisfactory for routine control work. However, the precision of the hydrometer method is not adequate where accurate results are required. Test Method D 1298 covers the use of the hydrometer in the determination of specific gravity.

Most ASTM Hydrometers (See Specification E 100) are calibrated to read specific gravity at 15.5/15.5°C (60/60°F). Information on sources of hydrometers calibrated at 25/25°C is available at ASTM Headquarters.

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. For specific hazard statements, see Section 6.