Methyl red Methyl red CAS:493-52-7
Chemical Name |
Methyl red |
CAS No. |
493-52-7 |
Molecular formula |
C15H15N3O2 |
EINECS No. |
207-776-1 |
Molecular weight |
269.30 |
Appearance: With shine violet crystalor carmine powder
Max Absorption wavelength, λ1(PH4.5): 523~528 nm
Max Absorption wavelength, λ2(PH6.2): 427~437 nm
Mass absorption coefficient , λ1 (PH4.5):130 L/(cm·g) min
Mass absorption coefficient , λ2 (PH6.2):70 L/(cm·g) min
PH discoloration range:4.5(Red)-6.2(Yellow)
Solubility in Ethanol: Pass
Loss on drying: 1.0 % max
Residue on ignition (sulfate):0.2%max
Melting point: 181-182℃
Solubility: solve in alcohol, insolve in water.
Packing: 25kg/ fibre drum
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