色谱纯乙腈 默克

'项目 色谱纯

（for HPLC, ≥99.9%）

纯度Purity ≥99.9%

λ H2O reference

紫外吸收UV absorption

λ: 195 nm ≤0.100

λ: 200 nm ≤0.020

λ: 228 nm ≤0.005

透光度transmittance

195 nm, ≥80%

200 nm, ≥95%

228 nm, ≥99%

游离碱free alkali (as NH3) ≤0.0001%

非挥发性物质non-volatile matter ≤0.0002%

游离酸free acid (as CH3COOH) ≤0.001%

水water (Karl Fischer) ≤0.01%

基线漂移baseline drift, (210 nm) ≤12 mAU

荧光奎宁fluorescence (quinine) at 254 nm ≤0.5 ppb

荧光奎宁fluorescence (quinine) at 365 nm ≤0.5 ppb

卤化残留halogenated residue 10 ng/L (as heptachlor epoxide)

UV absorption

HPLC-gradient/210 nm ≤1 mAU

HPLC-gradient/254 nm ≤0.2 mAU

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