98%含量:
外观Appearance 无色透明液体
红外光谱鉴别Infrared spectrometry 符合
纯度Purity ≥98.0% (GC)
比重Specific gravity (20/20°C) 0.8870 - 0.8890
折光率Refractive index n20/D 1.4010 - 1.4030
项目 色谱纯
(HPLC)
外观Appearance 无色透明液体
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity ≥99.5% (GC)
紫外吸收度UV Absorbance:
Wavelength (nm) Max. Absorbance
220 1.000
225 0.500
250 0.010
300 0.005
400 0.005
酸度Acidity (as HCl) <1 mg/L
氯化物Chloride <10 mg/L
折光率Refractive index n20/D 1.4017 ± 0.0008
灼烧残渣Residue <1 mg/L
水分Water <0.02%
( For HPLC, GC and spectrophotometry. )
品级Grade 蛋白测序级
(for protein sequence analysis)
外观Appearance clear liquid
红外光谱鉴别Infrared spectrometry 符合
纯度Purity >99.5 % (GC)
水分Water <0.05 %
UV (1 cm cell vs HPLC-grade water)
220 nm A: <1
250 nm A: <0.01
300 nm A: <0.005
蒸发残渣Residue after evaporation <2 ppm
酸度Acidity <0.0003 meq/g
品级Grade 无水级
(anhydre. grade)
外观Appearance Colorless Liquid
红外光谱鉴别Infrared spectrometry 符合
纯度Purity ≥99.80 % (GC)
水分Water ≤0.01 % (by Karl Fischer)
蒸发残渣Residue on Evaporation ≤0.0003 %
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