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ASTM D4663-10
Standard Test Method for Polyurethane Raw Materials Determination of Hydrolyzable Chlorine of Isocyanates
Automaticky přeložený název:
Standardní zkušební metoda pro polyuretanové surovinové Stanovení hydrolyzovatelná chloru izokyanátů
NORMA vydána dne 1.3.2004
Informace o normě:
Označení normy: ASTM D4663-10
Poznámka: NEPLATNÁ
Datum vydání normy: 1.3.2004
Kód zboží: NS-28081
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Anotace textu normy ASTM D4663-10 :
Keywords:
aromatic isocyanates, hydrolyzable chlorine, isocyanates, polyurethane raw materials, titration, toluene diisocyanate, Carbamoyl chloride, Carbon dioxide, Chlorine content--plastics, Hydrochloric acid (HCL), Hydrolyzable chlorine, Isocyanates, Methanol (methyl alcohol), Phosgene (dissolved), Polyurethane raw materials--isocyanates, Quality control (QC)--plastics, Reactivity, Toluene diisocyanate (TDI), ICS Number Code 83.080.10 (Thermosetting materials)
Doplňující informace
| 1. Scope | ||||||
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1.1 This test method determines the hydrolyzable chlorine content of toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, or mixtures of the two. This test method may also be applied to other isocyanates of suitable solubility. (See Note 0.) The main sources of hydrolyzable chlorine in the isocyanates are carbamoyl chloride and dissolved phosgene. Both of these compounds react with alcohols and water, forming ureas, carbamates, carbon dioxide, and hydrochloric acid. (See Note 2.) 1.2 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 test method may be applicable with crude polymeric isocyanates. However, the precision with crude polymeric isocyanates has not been established. Note 2There is no equivalent ISO standard. |
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| 2. Referenced Documents | ||||||
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