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ASTM D5629-99

Заменен
Standard Test Method for Polyurethane Raw Materials Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers — 3 стр.
Область применения

1.1 This test method covers the acidity, expressed as ppm of hydrochloric acid, in aromatic isocyanate or polyurethane prepolymer samples of below 100 ppm acidity. The test method is applicable to products derived from toluene diisocyanate and methylene-bis-(4-phenylisocyanate) (see Note 1).

Note 1-There are no equivalent ISO standards.

1.2 The values stated in SI units are to be regarded as the 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.

ICS
83.080.10 Thermosetting. Including ebonite / Термореактивные материалы
Сборник ASTM
08.03 Plastics (III): D5117 – latest; Reinforced Plastic Piping Systems and Chemical Equipment; Plastic Building Products / Пластмасса (III): D5117 – и далее; Армированные пластиковые трубопроводные системы и химическое оборудование; Пластмассовые строительные изделия
Тематика
Plastics