技术指标:
指标名称Name Index | 精萘 RefinedNapthalene | 工业萘 IndustrialNathalene | ||||
优等品High-class | 一等品Grade One | 合格品 | 优等品High-class | 一等品Grade One | 合格品 | |
外观 Appearance | 白色粉状,片状晶体White powder, flatcrystal | 白色略带微红或微黄粉状,片状晶体White powder with pinkish orlight yellow, flat crystal | 白色允许带微红或微黄粉状,片状晶体White powder allows with pinkishor light yellow, flat crystal | |||
结晶点 不小于%Crystallization Point (Notless than) | 79.8 | 79.6 | 79.3 | 78.3 | 78 | 77.5 |
不挥发物 不大于 %Nonvolatile Matter(Not more than) | -- | 0.01 | 0.02 | 0.04 | 0.06 | 0.08 |
灰分 不大于 % Ash Content (Notmore than) | -- | 0.006 | 0.008 | 0.01 | 0.01 | 0.02 |
酸洗比色 不深于Scouring Colorimetric(Not deeper than) | No.2 | No.4 | -- | -- | -- | -- |