ASTM D4877-14 PDF

Scope: 5.1 This test method can be used for research or for quality control to characterize isocyanates used in polyurethane products.

5.2 For toluene diisocyanate, results from this test method can relate to reactivity or performance in polyurethane systems.

1.1 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.2 (See Test Method D1209 and Note 1.) Suitable isocyanates include toluene diisocyanate, and pure or modified monomeric methylene di(phenylisocyanate).

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

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.

Note 1: This standard is equivalent to ISO8201;6271-1:2004.

ASTM D4877-14 Referenced Document

ASTM D1193 Standard Specification for Reagent Water
ASTM D1209 Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
ASTM D5386 Standard Test Method for Color of Liquids Using Tristimulus Colorimetry
ASTM D883 Standard Terminology Relating to Plastics

2019 ASTM D4877-19 Standard Test Method for Polyurethane Raw Materials: Determination of APHA Color in Isocyanates
2014 ASTM D4877-14 Standard Test Method for Polyurethane Raw Materials: Determination of APHA Color in Isocyanates
2010 ASTM D4877-10 Standard Test Method for Polyurethane Raw Materials: Determination of APHA Color in Isocyanates
2004 ASTM D4877-04 Standard Test Method for Polyurethane Raw Materials: Determination of APHA Color in Isocyanates
1998 ASTM D4877-98 Standard Test Method for Polyurethane Raw Materials Determination of APHA Color in Isocyanates