chinachrom
第1楼2008/03/17
今将MERCK光谱纯环已烷指标列出,能不能行您看吧.
Purity: >99.9%
Evaporation residue: <0.0005%
Water: <0.01%
Color: <10Hazen
Acidity: <0.0005meq/g
Alkalinity: <0.0002meq/g
Fluorescence
-as quinine at 254nm: <1ppb
-as quinine at 365nm: <1ppb
Transmission
-at 208nm: >10%
-at 223nm: >50%
-at 232nm: >80%
-at 240nm: >90%
-from 250nm: >98%