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中性红
中文别名: 中性红
英文名称: Neutral Red
CAS号: 553-24-2
EINECS号: 209-035-8
等级: IND
含量: 99
中性红
Neutral red
CAS号: 553-24-2
分子式: C15H17CIN4
分子量: 288.78
别名: 碱性红5,3-氨基-7-二甲基氨基-2-甲基吩嗪盐酸盐
深绿色结晶性粉末。溶于水溶液呈红色;溶于醇,溶液呈黄色并微带荧光。溶解度为水4.0%,无水乙醇1.8%,乙二醇乙醚3.75%,乙二醇3.0%。几乎不溶于二甲苯,其水溶液或乙醇溶液呈红色。最大吸收波长(50%乙醇)553nm。半数致死量(大鼠,静脉)112mg/kg。
熔点:  290 °C
Q/(HG)SJ 718-1996
项目ltem                                   指示剂级    
                                 (indicator (pH 6.8-8.0))            
pH range                                   6.8 - 8.0, red to yellow
灵敏度试验Sensitivity                 合格                   
醇溶解试验Solubility in alcohol             合格       
灼烧残渣(以硫酸盐计)Ignition residue,%  ≤  2.0



品级Grade                               细胞培养级  
                                   (for cell culture,≥90%(HPLC))
外观Appearance                          dark brown to black with red or green cast powder
红外光谱Infrared spectrometry           Conforms to Structure
dye content(HPLC)                       ≥90.0%  
水溶性solubility                        dark red solution at 10mg plus 1ml of water
碳carbon                                56.1-62.4%
氮nitrogen                              17.5-19.4%  
细胞培养测试cell culture test           pass



ACS级
项目名称 Item                           ACS Grade
澄清度试验 Claroty of solution          Passes test
pH变色域  Visnal transition interva     6.8(red)-8.0(yellow)



品级Grade                               生物染色级  
                             (grade for the Biological Stain )
外观appearance                          dark green to black powder
红外光谱infrared spectrum               conforms to structure.
紫外可见光谱uv-visible spectrum         C = 0.005 G/L IN ACIDIFIED 50% ETHANOL
                                        E(541 +/- 3 NM) = 23,000 (MINIMUM)
                                        E(274 +/- 3 NM) = 26,000 (MINIMUM)
生物染色试验biological stain            passes staining tests
染料含量dye content                     ≥50.0%
水溶性solubility                        1 mg/ml H2O; red to dark red or dark purple solution
 酸碱指示剂,生物染色剂。pH 6.8(红)-8.0(黄)。水、亚硝酸盐和尿的碱度指示剂。组织化学中用于脂肪的水解指示剂。神经细胞的尼尔(Nissl)小粒染色。与健那绿共用于血液体外活体染色。碘离子的光度测定。中性红试纸的制备。

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