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  • ASTM
    D6979-08 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
    Edition: 2008
    $91.10
    Unlimited Users per year

Description of ASTM-D6979 2008

ASTM D6979 - 08

Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen

Active Standard ASTM D6979 | Developed by Subcommittee: D20.22

Book of Standards Volume: 08.03




ASTM D6979

Significance and Use

This test method is suitable for quality control, as a specification test, and for research. The results are measures of batch-to-batch uniformity and may be useful in estimating reactivity.

The percent nitrogen can be used to characterize a polyol or indicate amounts of certain components in a polyol blend.

It is permissible to also express the results in equivalents of base per gram of sample, if desired.

1. Scope

1.1 This test method measures the basic constituents in polyols that are soluble in glacial acetic acid and reactive with perchloric acid. Samples containing 0.3 10 % nitrogen have been evaluated by this method. This test method is applicable to polyether polyols and polyether polyol blends that are used in urethane reactions. (See Note 1.)

1.2 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 1This standard is equivalent to ISO 25761:08


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D883 Terminology Relating to Plastics

E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


Keywords

alkalinity; polyols; polyurethane; raw materials; test method; titration; Acidity, alkalinity, pH--plastics; Percent nitrogen; Polyols; Polyurethane raw materials; Titration;


ICS Code

ICS Number Code 83.100 (Cellular materials)


DOI: 10.1520/D6979-08

ASTM International is a member of CrossRef.

ASTM D6979

The following editions for this book are also available...

Format Year Publisher Type Title Annual Price
2003
ASTM
Model Standard
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2018
ASTM
Model Standard
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2013
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Model Standard
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2024
ASTM
Model Standard
 $76.13 Buy
2024
ASTM
Model Standard
 $91.10 Buy

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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