【原创】求助乙腈控制标准，HPLC级别的更好

应助达人

天地HPLC乙腈的指标，请参考：
Assay :Min.99.9%
Color(APHA) :10
LC Gradient Elution Suitability :To Pass Test
Residue after Evaporation :2ppm
Titrable Acid :0.008meq/g
Titrable Base :0.0006meq/g
Water :0.02%
Optical Absorbance at
190nm :1.00
200nm :0.05
210nm :0.04
220nm :0.02
230nm :0.01
254nm :0.005
400nm :0.005

应助达人

关东化学LCMS用乙腈：
Purity(GC):min.99.8%
Density(20℃):0.780-0.784g/ml
Refractive index n_D²⁰:1.343-1.346
Water:max.0.05%
Non-volatile matter:max.0.001%
Acid(as CH₃COOH):max.0.001%
Peroxide(as H₂O₂):max.5ppm
Gradient test:to pass test
Absorbance (1 cm cell,reference:water)
200nm :0.050
210nm :0.030
220nm :0.015
225nm :0.010
230nm :0.010
240nm~ :0.009
Relative fluorescence intensity :to pass test
Sutability for LC/MS :to pass test

SH/T1627.1-1996 SH/T 1627.1-1996 工业用乙腈
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