NEN ISO 1157-1992 标准详情
- 标准号:NEN ISO 1157-1992
- 中文标题:
- 英文标题:Plastics - Cellulose Acetate In Dilute Solution - Determination Of Viscosity Number And Viscosity Ratio
- 标准类别:荷兰国家标准NEN
- 发布日期:
Defines a method for determining the viscosity number and viscosity ratio of cellulose acetate in dilute solution in a mixture of dichloromethane and methanol. Applies to cellulose acetate with not less than 50% acetic acid yield.
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