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Significance and Use
5.1 These test methods are suitable for quality control, as specification tests, and for research. Color is an important property of urethane products.
1.1 These test methods measure visually the color of clear polyester and polyether liquids. They apply only to materials whose colors have light-absorption characteristics similar to those of the standards. An alternative method is Test Method (see ).
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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: Test Method A of this standard is equivalent to ISO 6271-1. Test Method B of this standard is equivalent to ISO 4630-1.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D883 Terminology Relating to Plastics
D1193 Specification for Reagent Water
D1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
D5386 Test Method for Color of Liquids Using Tristimulus Colorimetry
D6166 Test Method for Color of Pine Chemicals and Related Products (Instrumental Determination of Gardner Color)
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E308 Practice for Computing the Colors of Objects by Using the CIE System
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1164 Practice for Obtaining Spectrometric Data for Object-Color Evaluation
ISO StandardsISO4630-2 Clear LiquidsEstimation of Colour by the Gardner Colour ScalePart 2: Spectroscopic Method ISO6271-1
ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics); 83.080.20 (Thermoplastic materials)
UNSPSC Code 12352100(Organic derivatives and substituted compounds)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D4890-18, Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols, ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top