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ASTM D6979-13
Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
Automaticky přeložený název:
Standardní zkušební metoda pro Polyuretanové Suroviny: Stanovení zásaditost v polyolech, vyjádřeny jako procento dusíku
NORMA vydána dne 1.11.2013
Informace o normě:
Označení normy: ASTM D6979-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2013
Kód zboží: NS-37179
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D6979-13 :
Keywords:
alkalinity, nitrogen, polyols, polyurethane, raw materials, test method, titration, ICS Number Code 83.100 (Cellular materials)
Doplňující informace
| 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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