PH0720 | 伊红Y（水溶） 水溶性伊红Y / Eosin Y Water Soluble CAS号：17372-87-1

EosinY为酸性染料,将胞质染成粉红色(嗜酸性),是组织和细胞化学常用染色试剂之一,常与苏木精（是碱性染料，将核染成紫蓝色(嗜碱性)）联合使用（HE染色法）.在免疫组织化学实验中，常作为衬染试剂以便于组织和细胞结构的观察。生物染色剂，肽和蛋白质、原生质、碱性磷酸酶等染色；光度测定银(次微克量)；赖特血球着色剂(Wright stain)组分，用于检别血球；吸附指示剂，滴定溴、碘、氟等离子等。

英文名称：Eosin Y sodium salt water soluble；Eosin Y water soluble；Bromofluorescein；Bronze bromo ES；

Bromofluoresceic acid；Bromoeosine；Acid red 87；2′,4′,5′,7′-Tetrabromofluorescein disodium salt；Eosin(water soluble)；Eosin

其他名称：伊红Y(水溶)；水溶伊红；朝红；四溴荧光素二钠；曙红钠盐；四溴荧光黄；曙红变性次甲蓝；黄光曙红；曙红微黄；酸性红87；2',4',5',7'-四溴-3',6'-二羟基螺[异苯丙呋喃-1(3H),9'(9H)-占吨]-3-酮二钠盐

CAS号：17372-87-1

C20H6Br4Na2O5=691.85

级别：BS

含量：≥85.0%

λmax：515～518

性状：红色具蓝光结晶或棕色粉末，易溶于水，稍溶于醇，不溶于醚，浓的水溶液为深棕红色，其稀溶液（1：500）为黄红色显绿色荧光，醇溶液有很强的绿色荧光。最大吸收波长517nm。低毒,半数致死量(小鼠,经口)2344mG/kG

用途：生化研究。用作生物染色剂，肽和蛋白质、原生质、碱性磷酸酶等染色。光度测定银(次微克量)。赖特血球着色剂(Wright stain)组分，用于检别血球。也用作吸附指示剂，滴定溴、碘、氟等离子。用作显色剂，用于荧光光度法测定Ag＋、Pb2＋、Mn2＋、Zn2＋等

保存：常温运输保存，有效期3年。

EosinY is an acidic dye that stains cytoplasm pink (Eosinophilic) and is one of the most common staining agents in tissue and cytochemistry, often used in combination with hematoxylin (an alkaline dye that stains Chemicalbook nuclei purplish blue (basophilic)) (HE staining). In immunohistochemical experiments, it is often used as a dye liner to facilitate the observation of tissue and cell structure. Biological stain, peptide and protein, protoplasm, alkaline phosphatase, etc.; Photometric determination of silver (submicrogram); A component of Wright stain for the identification of blood cells; Adsorption indicator, titrating bromine, iodine, fluorine plasma, etc.