ANSI/ASTM D5629-1999 聚氨基甲酸乙酯原材料试验方法:低酸性芳族异氰酸盐酯和聚氨基甲酸乙酯预聚物酸度的测定

标准号：ANSI/ASTM D5629-1999
中文标准名称：聚氨基甲酸乙酯原材料试验方法:低酸性芳族异氰酸盐酯和聚氨基甲酸乙酯预聚物酸度的测定
英文标准名称：Test Method for Polyurethane Raw Materials: Determination of Acidity in Low Acidity Aromatic Isocyanates and Polyurethane Prepolymers (08.03)
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：2000/1/18 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.10
适用范围： This test method measures the acidity, expressed as ppm of hydrochloric acid (HCl), 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 0). Refer to Test Method D 6099 for determination of acidity in moderate- to high-acidity aromatic isocyanates.ISO 14898, Method B is technically equivalent to this test method. The values stated in SI units are to be regarded as the standard. 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.