网络快三彩票网站

  • <tr id='8pp2mi'><strong id='8pp2mi'></strong><small id='8pp2mi'></small><button id='8pp2mi'></button><li id='8pp2mi'><noscript id='8pp2mi'><big id='8pp2mi'></big><dt id='8pp2mi'></dt></noscript></li></tr><ol id='8pp2mi'><option id='8pp2mi'><table id='8pp2mi'><blockquote id='8pp2mi'><tbody id='8pp2mi'></tbody></blockquote></table></option></ol><u id='8pp2mi'></u><kbd id='8pp2mi'><kbd id='8pp2mi'></kbd></kbd>

    <code id='8pp2mi'><strong id='8pp2mi'></strong></code>

    <fieldset id='8pp2mi'></fieldset>
          <span id='8pp2mi'></span>

              <ins id='8pp2mi'></ins>
              <acronym id='8pp2mi'><em id='8pp2mi'></em><td id='8pp2mi'><div id='8pp2mi'></div></td></acronym><address id='8pp2mi'><big id='8pp2mi'><big id='8pp2mi'></big><legend id='8pp2mi'></legend></big></address>

              <i id='8pp2mi'><div id='8pp2mi'><ins id='8pp2mi'></ins></div></i>
              <i id='8pp2mi'></i>
            1. <dl id='8pp2mi'></dl>
              1. <blockquote id='8pp2mi'><q id='8pp2mi'><noscript id='8pp2mi'></noscript><dt id='8pp2mi'></dt></q></blockquote><noframes id='8pp2mi'><i id='8pp2mi'></i>

                D(-)-酒石酸

                更新:2018-11-25 10:57:51

                  中文名:D(-)-酒石酸
                  英文名:D(-)-Tartaric acid
                  别名:D(-)-酒石酸;(2S,3S)-(-)-酒石酸;D(-)-2,3-二羟基丁二酸;D(-)-2,3-二羟基琥珀酸;葡萄酸,左旋
                  CAS No.:147-71-7级别:Reagent Grade
                  分子式:C4H6O6分子量:150.09
                订购信息
                  货号规格价格品牌
                  D1785-5g5g92GBCBIO
                  D1785-25g25g207GBCBIO
                产品介绍
                  质检项目指标值
                  熔点范围/℃167.0~171.0
                  重金属(以Pb计),%≤0.001
                  干燥失重,%≤0.5
                  比旋光度[α](20℃,D),°·m2/kg-11.0~-13.0
                  含量,%≥99.0
                  灼烧残渣(以硫酸盐计),%≤0.1


                  化学性质:

                  单斜棱柱状结晶。室温时1g溶 于0.75ml水、0.5ml沸水、1.7ml甲醇、3ml乙醇、0.5ml丙醇、250ml乙醚,溶于甘油,不溶于氯仿。20℃时100ml水中能溶 解139g。相对密度(d204 )1.7598。熔点 168~170℃。比旋光度 [α]20D-12°(c=20,水中)。半数致死量(小鼠,静脉)485mg/kg。有刺激性。

                  用途:

                  生化研究。


                更多产品