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Acid Dyes

Our product range contains a wide range of Methyl Red

Methyl Red

  • Min. Order (MOQ) 25 Kilogram
  • Shelf Life 60 Months
  • Molecular Formula C15H15N3O2
  • Molecular Weight 269.31
  • Grade AR
  • Physical state at 20 °C Solid
  • Melting point/ Freezing point [°C] 179°C
  • CAS 493-52-7
  • Colour Dark Red Powder
  • Vapour Density 9.3
  • Odour Odorless
  • Solubility in Water [% Weight] Insoluble in Water

Details

Appearance Dark red to maroon to violet or purple powder or crystals
Identity Passes test
pH transition range (4.2 - 6.2) Pink Red – yellow orange
Insoluble matter in ethanol (1 g/L) Passes test
Absorption maxima (buffer pH 4.2) 523 - 526 nm
Absorption maxima (buffer pH 6.2) 427 - 437 nm
Loss on drying (at 110°C) Max 5.0%
Residue on ignition (as SO4) Max 2.0%
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