Astm D 3493 – 04 pdf free download

Standard Test Method for
Carbon Black—Oil Absorption Number of Compressed
Sample (COAN)1

This standard is issued under the fixed designation D 3493; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This test method covers the procedure for the mechanical compression of a carbon black sample and the determination of the oil absorption number of the compressed sample.

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

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.

2. Referenced Documents

2.1 ASTM Standards: 2
D 1799 Practice for Carbon Black—Sampling Packaged
D 1900 Practice for Carbon Black—Sampling Bulk Shipments
D 2414 Test Method for Carbon Black—Oil Absorption
D 3324 Practice for Carbon Black—Improving Test Reproducibility Using ASTM Standard Reference Blacks3
D 4821 Guide for Carbon Black—Validation of Test
Method Precision and Bias
D 4483 Practice for Determining Precision for Test Method
Standards in the Rubber and Carbon Black Industries

3. Summary of Test Method

3.1 A sample of carbon black is compressed four times in a
compression cylinder at a pressure of 165 MPa (24 000 psi)
and then tested in an absorptometer to determine the oil
absorption number.

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