ANSI/ASTM D4659-1998 聚氨酯原材料试验方法.异氰酸酯比重的测定

标准号：ANSI/ASTM D4659-1998
中文标准名称：聚氨酯原材料试验方法.异氰酸酯比重的测定
英文标准名称：Polyurethane-Isocyanate Raw Materials, Determination of Specific Gravity, Method for Testing (11.01)
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1999/2/10 12:00:00
中国标准分类号：G31
国际标准分类号：83.040.30;83.080.20
适用范围： These test methods determine the specific gravity of toluenediiosocyanate and crude methylene-bis-(4-phenylisocyanate). These test methods also are applicable to many other liquids. (See Note 1.) Test Method A Specific gravity by pycnometer, for high-accuracy determination. Test Method B Specific gravity by hydrometer, for a less accurate, but rapid, determination. The values stated in SI units are to be regarded as the standard. The values given in brackets are for information only. 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. For specific warning and precautionary statements see Notes 2 and 3. Note 1 -There is no equivalent ISO standard.