ANSI/ASTM D4876-1998
聚氨酯原料试验方法:原油或改性的异氰酸酯酸度的测定(08.03)

Method for Testing Polyurethane Raw Materials: Determination of Acidity of Crude or Modified Isocyanates (08.03)

ANSI/ASTM D4876-1998 发布历史

This test method determines the total acidity, expressed as HCl, of crude or modified isocyanates. The test method is applicable to products derived from toluene di iso cyanate, methylene-bis-(4-phenyl iso cyanate), and polymethylene polyphenyl iso cyanates. (See Note 1.) The values stated in SI units are to be regarded as the standard. This standard does not purport to address all of the safety problems, 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.

ANSI/ASTM D4876-1998由美国国家标准学会 US-ANSI 发布于 1998，并于 1999-02-10 实施。

ANSI/ASTM D4876-1998 在中国标准分类中归属于: G31 合成树脂、塑料基础标准与通用方法，在国际标准分类中归属于: 83.040.30 塑料的辅料和添加剂,83.080.20 热塑性塑料。

ANSI/ASTM D4876-1998的历代版本如下：

• 1998年 ANSI/ASTM D4876-1998 聚氨酯原料试验方法:原油或改性的异氰酸酯酸度的测定(08.03)

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标准号

ANSI/ASTM D4876-1998

发布日期

1998年

实施日期

1999年02月10日

废止日期

无

中国标准分类号

G31

国际标准分类号

83.040.30;83.080.20

发布单位

US-ANSI

适用范围

This test method determines the total acidity, expressed as HCl, of crude or modified isocyanates. The test method is applicable to products derived from toluene di iso cyanate, methylene-bis-(4-phenyl iso cyanate), and polymethylene polyphenyl iso cyanates. (See Note 1.) The values stated in SI units are to be regarded as the standard. This standard does not purport to address all of the safety problems, 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.