ASTM D3897-1991(2006) 标准详情
- 标准号:ASTM D3897-1991(2006)
- 中文标题:铬黄碱性值皮革鞣制液的计算
- 英文标题:Standard Practice for Calculation of Basicity of Chrome Tanning Liquors
- 标准类别:美国材料与试验协会ASTM
- 发布日期:1991
Basicity is a ratio. In any chromic salt solution, the electrovalence of the chromium (+3) is satisfied by the hydroxyl ions and by acid ions. The extent to which this electravalence is satisfied by the hydroxyl ions, expressed as a percentage, is th
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