当前位置: 首页 > 协会标准 > ASTM 美国材料与试验协会 > ASTM D6716-2008 湿蓝皮中总灰分的标准试验方法
ASTM D6716-2008 湿蓝皮中总灰分的标准试验方法

ASTM D6716-2008 湿蓝皮中总灰分的标准试验方法

prev next

  • 商品货号:INFOEACH_80701
  • 商品品牌:美国材料与试验协会 ASTM
    商品重量:0克
  • 上架时间:2021-02-25
    商品点击数:5596
  • 用户评价: comment rank 5
  • 本店售价:请咨询客服
  • 点击此处进入论坛自助下载

资料描述

【英文标准名称】: Standard Test Method for Total Ash in Wet Blue
【原文标准名称】: 湿蓝皮中总灰分的标准试验方法
【标准号】: ASTM D6716-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: D31.02
【标准类型】: (Test Method)
【标准水平】: ()
【中文主题词】:
【英文主题词】: aluminum oxide; ash; blue stock; chrome content; chromic oxide; total ash; wet blue; wet white; Aluminum oxide (Al2O3); Ash--leather; Blue stock (leather); Chromic oxide; Nonvolatile organic compounds; Total ash; Wet blue
【摘要】: This test method is useful in determining the approximate amount of nonvolatile inorganic material in wet blue. This may be in the form of salts or oxides of the elements. In a mixed-chrome tannage, the approximate percentage of other elements in the wet blue may be determined by subtracting the chromic oxide that may be conveniently determined on the ash. (See Test Method D 6714.) The specified temperature of 600x00B0;C is high enough to produce a reproducible result but it does not completely dehydrate such oxides as aluminum oxide (Al2O3) and chromic oxide (Cr2O3). Likewise, such salts as sulfates and phosphates may be incompletely dehydrated, and if alkalis and chromium are present simultaneously, oxidation to chromate may occur. Therefore, caution is advised in drawing conclusions based on quantitative relations of the elements.1.1 This test method covers the determination of total ash in wet blue and wet white. 1.2 For total ash in wet white, the procedure is identical; substitute wet white for wet blue in the standard. 1.3 Total ash in wet blue may be reported upon a number of different bases (for example, fat-free, moisture-free, as received, excluding chromium, and so forth). Before proceeding with any tests, it is very important to determine upon which basis that the total ash is to be reported and to identify all other test methods that will be required to be executed in order to achieve the determined reporting method. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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.
【中国标准分类号】: Y45
【国际标准分类号】: 17_06
【页数】: 2P.;A4
【正文语种】: 英语

相关资料