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BrandCodow
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Product No.CD100945
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CAS No.493-52-7
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StandardHG/T 3449-2012
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Packge
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List PricePlease select the packge.
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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 : HG/T 3449-2012 化学试剂 甲基红
Product No. : CD100945
Product Name : Methyl Red
Product Spec. : 指示剂 Ind
Packges : 10g 100g 500g
CAS号 : 493-52-7
分子式 : (CH3)2NC6H4N=NC6H4CO2H
分子量 : 269.30
色标 : 13020
贝尔斯坦(Beilstein)注册号 : 750102
酶学委员会编号 : 207-776-1
MDL编号 : MFCD00002425
颜色外观 Color Appearance : 暗红色到紫红色结晶性粉末 Dark red to purple crystalline powder
pH 变色域 Transition range : 4.5(红) red~6.2(黄) yellow
最大吸收波长λ1(pH=4.5) The maximum absorption wavelength λ1 (at pH = 4.5),nm : 523~528
最大吸收波长λ2(pH=6.2) The maximum absorption wavelength λ2 (at pH = 6.2),nm : 427~437
质量吸收系数α1(λ1,pH4.5,干样) Quality absorption coefficient α1 (λ1, pH 4.5, dry sample),L/cm·g : ≥130
质量吸收系数α2(λ2,pH6.2,干样) Quality absorption coefficient α2 (λ2, pH 6.2, dry sample),L/cm·g : ≥70
乙醇溶解试验 Solubility in ethanol : 合格 Pass
干燥失重 Loss on drying : ≤1.0%
灼烧残渣 ( 以硫酸盐计 )Residue on ignition(asSO4) : ≤0.2%
熔点 Melting point : 178-182°C
Shelf Life : 730 Days
COA : Have COA












