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Methyl Red
指示剂 Ind
  • Brand
    Codow
  • Product No.
    CD100945
  • CAS No.
    493-52-7
  • Standard
    HG/T 3449-2012
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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

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