Methyl red/ Acid Red 2( Cas No.493-52-7)
Product Description
Items | Technical index |
Product name | Methyl red |
Synonym | Bromocresol green-methyl red |
Appearance | Dark red crystalline powder |
PH indicator range | 4.5(red)~6.2(yellow) |
Residue on ignition (as sulfate) | 0.2%max |
Mass-absorption coefficient | λ1(PH4.5),L/(cm·g): 130min λ2(PH6.2),L/(cm·g): 70min |
Maximum absorption wavelength | λ1(PH4.5),nm: 523~528 λ2(PH6.2),nm: 427~437 |
Loss on drying | 1.0%max |
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