This product can be used for titration analysis, qualitative and quantitative analysis, etc. It should be stored in a cool, ventilated place, sealed, and used within its expiration date. To obtain the product's Certificate of Analysis (COA), please visit www.howeipharm.com to view and download it.
Standard : Q/HWC032-2020 广州和为医药科技有限公司化学品制造标准
Product No. : CD100953
Product Name : Cresol red
Product Spec. : 指示剂 Ind
Packges : 100mg 1g 10g 100g 500g
CAS号 : 1733-12-6
分子式 : C21H18O5S
分子量 : 382.43
贝尔斯坦(Beilstein)注册号 : 343399
酶学委员会编号 : 217-064-2
MDL编号 : MFCD00005878
颜色外观 Color Appearance : 红棕色或暗红色结晶性粉末
pH变色域 Transition range : 6.5(黄) yellow～8.5(紫) purple
最大吸收波长，Absorption maximum λ max, nm : -
λ1(pH6.5) : 432～436
λ2(pH8.5) : 571～574
质量吸收系数 Spec. Absorptivity α(L/cm·g) : -
α1(λ1，pH6.5，干样 dry sample) : 49～67
α2(λ2，pH8.5，干样 dry sample) : 100～132
乙醇溶解试验 Solubility in ethanol : 合格 Pass
干燥失重 Loss on drying : ≤3.0%
灼烧残渣(以SO4计) Residue on ignition(as SO4) : ≤0.2%
熔点 Melting point，℃ : 290 ℃
Shelf Life ： 730 Days
COA ： Have COA
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