色谱 乙晴透过率95%

级别：	色谱纯	用途类别：	液相色谱
含量：	99.99（％）	产品规格：	500ml
CAS：	444333221

天津市北科化学品色谱乙腈质量标准单 产品的特点为：高纯度----HPLC分析中无干扰峰；低含水量----避免了正相色谱柱的失活；低UV背景吸收----避免了鬼峰及错误结论；优异的批次稳定性----更换批次时无需更改HPLC标准方法；低挥发残留----减少了仪器因色谱柱故障引起的停机时间；满足ACS/HPLC溶剂标准。检测项目                                        合格标准 GC纯度                                          ≥99.9% 蒸发残渣                                         ≤1mg/l 密度（20℃）                                     0.781-0.785（20℃）折光率（20℃/D）                                 1.3440 水份                                             ≤0.02%酸度                                             ≤0.0005mmol/g紫外透过率 200nm                                 ≥90% HPLC吸光度210nm                                 吸收杂峰高度≤10mAU注：测定HPLC吸光度的条件为Venusil-C18柱（4.6*50mm，5ul），柱温40℃，流速3ml/min，流动相体系为乙腈和水，6min内乙腈从10%梯度上升至80%，进样量为20ul(neat)。210nm吸收杂峰高度≤10mau220nm总吸收杂峰高度≤100mau 最大吸光值（1cm石英比色皿水作对照）190nm                                     1.000200nm                                     0.050210nm                                     0.040220nm                                     0.030230nm                                     0.010240nm                                     0.005250nm                                     0.005       EnglishName：Chromatographically Pure AcetonitrileMolecular formula：CH3CNGrade：Guaranteed reagentGC purity                                        ≥ 99.9% Evaporation residues                             ≤ 1mg/l Density（20℃）                                  0.781-0.785（20℃）Refractive index（20℃/D）                        1.3440 Water                                            ≤ 0.02%Acid                                             ≤ 0.0005mmol/gUltraviolet Transmission rate 200nm               ≥ 90% HPLC Analysis 210nm                              impurities ≤ 10mAUHPLC Analysis conditions: Venusil-C18 column(4.6*50mm，5ul), temperature 40℃, flow velocity 3ml/min, mobile phase Acetonitrile/Water, Acetonitrile concentration increases from 10% to 80% within 6 minutes，sample volume 20ul(neat).210nm impurities ≤ 10mau220nm overall impurities ≤100mauMaximum absorbance values（1cm Quartz Cell with water as control）190nm                                     1.000200nm                                     0.050210nm                                     0.040220nm                                     0.030230nm                                     0.010240nm                                     0.005250nm                                     0.005                                                 天津市北科化学品有限责任公司