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Bromocresol purple

Cas:
115-40-2
Molecular Structure:
MDL:
--MFCD00011681
Molecular Formula:
C21H16Br2O5S
Molecular Weight:
540.24562.20
Alias:
二溴邻甲酚磺酜酞
Product order:
Name Specifications Packing Price Delivery
Bromocresol purple 96% 25g RMB 418 Consulting service
Bromocresol purple 96% 5g RMB 93.5 Consulting service
Bromocresol purple IND 10g RMB 38.5 Consulting service
Character:
几乎无色或黄色到砖红色细小结晶性粉末。溶于醇带黄色,溶于稀碱及氨中呈红紫色,不溶于水。有刺激性。乙醇溶解度:75 g/L(20°C)
Quality Standard:
    
   项目Item                                       指示剂
                           (Ind)
外观Appearance                                 合格
pH变色域Visual transition interval         5.2(黄)~6.8(紫)
溶解试验Solubility               合格
干燥失重Drying loss,%                ≤0.5
灼烧残渣(以硫酸盐计)Ignition residue,%         ≤0.1

品级Grade                               高纯级  
外观Appearance                          灰色至浅紫色或粉红色至黄褐色粉末
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥96.0% (HPLC area)  
吸光值Absorbance                        ≥0.540(5mg/L, pH 7.2, 588.0 to 592.0 nm)
醇溶解试验Solubility in EtOH            Clear c = 0.1%
pH变色域Transition interval(pH)         5.2(yellow) to 6.8(purple)    

Storage:
密封保存。
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