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ASTM D6979-13
Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
STANDARD published on 1.11.2013
The information about the standard:
Designation standards: ASTM D6979-13
Note: WITHDRAWN
Publication date standards: 1.11.2013
SKU: NS-37179
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
The category - similar standards:
Annotation of standard text ASTM D6979-13 :
Keywords:
alkalinity, nitrogen, polyols, polyurethane, raw materials, test method, titration, ICS Number Code 83.100 (Cellular materials)
Additional information
| Significance and Use | ||||||
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5.1 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 are useful in estimating reactivity. 5.1.1 The percent nitrogen can be used to characterize a polyol or indicate amounts of certain components in a polyol blend. 5.1.2 It is permissible to also express the results in equivalents of base per gram of sample, if desired. |
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| 1. Scope | ||||||
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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.
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Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
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Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals (Withdrawn 2009)
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Standard Terminology Relating to Plastics |
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