PH9258 | 苏木色精 苏木素 苏木色素 苏木精 Hematoxylin 高纯≥99% CAS号：517-28-2

英文名称：Hematoxylin；7,11b-Dihydrobenz[b]indeno[1,2-d]pyran-3,4,6a,9,10(6H)-pentol；C.I.75290；Natural Black 1
其他名称：苏木素；苏木色素；苏木精
CAS号：517-28-2
C16H14O6•3H2O=356.36
级别：High Purity Grade
含量：≥99%
熔点：140℃
溶解性：Good in alcohol
水分：≤6%
Em (550nm, 0.1M NaOH)：>14700
性状：白色至浅黄色结晶，露光变红。溶于热水和热乙醇，溶解度1mg/ml左右。
用途：生化研究。核和染色质的染色剂。用不同的媒染剂可得到蓝色或黑色。定性检定铜(II)、铁(III)、钼酸盐、铋(III)和锡(IV)等；光度测定钒、铝、锡(IV)、氟、铌、钽等；墨水制造；酸碱指示剂。pH 5.0(黄)～6.0(紫)、0.0(粉红)～1.0(绿)。
保存：常温运输与保存，有效期3年


苏木精是从南美的苏木（热带豆科植物）干枝中用乙mi浸制出来的一种色素，是最常用的染料之一。苏木精不能直接染色，必须暴露在通气的地方，使他变成氧化苏木精（又叫苏木素）后才能使用，这叫做“成熟”。苏木精的“成熟”过程需时较长，配置后时间愈久，染色力愈强。被染材料必须经金属盐作媒剂作用后才有着色力。所以在配制苏木精染剂时都要用媒染剂。常用的媒染剂有硫酸铝按、钾明矾和铁明矾等。苏木精是是染细胞核的优良材料，他能把细胞中不同的结构分化出各种不同的颜色。分化时组织所染的颜色因处理的情况而异，用酸性溶液（如Y酸—酒精）分化后呈红色，水洗后仍恢复青蓝色，用碱性溶液（如AN水）分化后呈蓝色，水洗后呈蓝黑色。遇光变红。 在水溶液中，特别是在碱溶液中易被空气氧化成红棕色的氧化苏木精。


Hematoxylin is one of the most commonly used dyes, a pigment extracted from the dried branches of South American hematoxylin (tropical legume) in ether. Hematoxylin cannot be dyed directly, it must be exposed to a ventilated place, so that it can be used after oxidation of hematoxylin (also called hematoxylin), which is called "maturation". The "mature" process of hematoxylin takes a long time, and the longer the time after configuration, the stronger the dyeing power. The dyed material must be treated by metal salt as a medium before it has coloring power. Therefore, mordant should be used when preparing hematoxylin stain. Commonly used mordant are aluminum sulfate press, potassium alum and iron alum. Hematoxylin is an excellent material for staining the nucleus, which can differentiate different structures in the cell into a variety of different colors. The color of the tissue dyed at the time of differentiation varies according to the treatment situation, red after differentiation with acidic solution (such as hydrochloric acid - alcohol), blue after washing, blue after differentiation with alkaline solution (such as ammonia), blue after washing. It turns red when exposed to light. Oxyhematoxylin is easily oxidized to reddish brown by air in aqueous solutions, especially in alkali solutions.