ASTM D 4877 Standard Test Method for Polyurethane Raw Materials: Determination of APHA Color in Isocyanates

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ASTM D 4877 Document Information:

Title
Standard Test Method for Polyurethane Raw Materials: Determination of APHA Color in Isocyanates

ASTM International

Publication Date:
Mar 1, 2004

Scope:

(Footnote *)

This test method measures the color of clear liquids. It is applicable only to materials whose color-producing bodies have light-absorption characteristics similar to those of the platinum cobalt color standards used.(Footnote 2) (See Test Method D 1209 and Note 1.)

The values stated in SI units are to be regarded as the standard.

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 hazards statements see 7.1 and Note 2.

NOTE 1 - Although this test method and ISO 6271-1997 differ in some details, data obtained using either are technically equivalent.

Footnote * - A Summary of Changes section appears at the end of this standard.

Footnote 2 - See Standard Methods for the Examination of Water, Sewage, and Industrial Wastes, AM. Public Health Assn., 1015 15th St. NW Washington, DC 20005.

Keywords:

APHA
color
isocyanates
platinum-cobalt scale polyurethane raw materials
Pt/Co scale

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