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- 溶解度:1g/14.5l水 (16°C),1g/1.4l沸水 (16°C),易溶于无机酸和氢氧化钾溶液,微溶于乙醇,不溶于有机溶剂,加热分解无熔点,并部分升华。
熔点:300 °C
pH6时最大吸收波长267nm,ε10250,最小吸收波长240nm,吸收度比值A250/A260=0.57、A280/A260=0.61、A290/A260=0.07。pH10时最大吸收波长277.5nm和240.5nm,摩尔吸光系数分别为9300和8900,最小吸收波长257nm,吸光度比值A250/A260=1.29、A280/A260=1.71、A290/A260=0.92。半数致死量(小鼠,腹腔)500mg/kg
质量标准
外观Appearance白色至微黄色粉末
红外光谱鉴别Infrared spectrometry 符合
纯度Purity≥98.0% (HPLC)
E 1 %/1 cm, 278nm pH 10 599 - 612
干燥损失Loss on drying<1 % (105°C, 5 hrs)
重金属Heavy metals (as Pb)≤0.001 %
硫酸盐灰分Sulfated ash<0.2 % (800°C)
贮存:密封避光2-8°C保存
用途:生化研究,有机合成。
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