24小时热门版块排行榜

返回列表

minmin2372

木虫 (正式写手)

应助: 2 (幼儿园)
金币: 2774.6
帖子: 307
在线: 94.7小时
虫号: 632595

[交流] 【求助】对氨基苯酚的药典标准

谁能帮我查到对氨基苯酚在美国药典或是欧洲药典中的相关资料，比如检测方法和限量标准之类的，谢谢了

回复此楼

» 猜你喜欢

过年走亲戚时感受到了所开私家车的鄙视链已经有10人回复
今年春晚有几个节目很不错，点赞！已经有12人回复
情人节自我反思：在爱情中有过遗憾吗？已经有13人回复
体制内长辈说体制内绝大部分一辈子在底层，如同你们一样大部分普通教师忙且收入低已经有12人回复
基金正文30页指的是报告正文还是整个申请书已经有5人回复

» 抢金币啦！回帖就可以得到:

查看全部散金贴

1楼 2011-01-30 20:30:10

已阅关注TA 给TA发消息送TA红花 TA的回帖

mrzouhao

木虫之王 (文坛精英)

★ ★
minmin2372(金币+1):谢谢参与
qinhy(金币+1): 多谢提供，欢迎常来药学版~ 2011-02-09 09:51:40

Free p-aminophenol— Transfer 5.0 g to a 100-mL volumetric flask, and dissolve in about 75 mL of a mixture of equal volumes of methanol and water. Add 5.0 mL of alkaline nitroferricyanide solution (prepared by dissolving 1 g of sodium nitroferricyanide and 1 g of anhydrous sodium carbonate in 100 mL of water), dilute with a mixture of equal volumes of methanol and water to volume, mix, and allow to stand for 30 minutes. Concomitantly determine the absorbances of this solution and of a freshly prepared solution of p-aminophenol, similarly prepared at a concentration of 2.5 µg per mL, using the same quantities of the same reagents, in 1-cm cells, at the maximum at about 710 nm, with a suitable spectrophotometer, using 5.0 mL of alkaline nitroferricyanide solution diluted with a mixture of equal volumes of methanol and water to 100 mL as the blank: the absorbance of the test solution does not exceed that of the standard solution, corresponding to not more than 0.005% of p-aminophenol.