Methyl Red 493-52-7
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Methyl Red 493-52-7

Methyl red appears as shiny purple crystals or reddish-brown powder. It has a melting point of 180-182°C. It is easily soluble in ethanol and glacial acetic acid, but almost insoluble in water.
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  • 493-52-7

  • Boss Chemical

  • 493-52-7

Methyl Red Basic information
Description
Product Name: Methyl Red
CAS: 493-52-7
MF: C15H15N3O2
MW: 269.3
EINECS: 207-776-1
Mol File: 493-52-7.mol
Methyl Red Chemical Properties
Melting point 179-182 °C (lit.)
Boiling point 412.44°C (rough estimate)
bulk density 300-500kg/m3
density 0.839 g/mL at 25 °C
vapor density 9.3 (vs air)
refractive index 1.5930 (estimate)
Fp 11 °C
storage temp. Store at +5°C to +30°C.
solubility ethanol: soluble1mg/mL
pka 4.95(at 25℃)
form Solid
Colour Index 13020
color Reddish-violet
Odor Odorless
PH Range 4.4(red)-6.3(yellow)
Water Solubility Practically insoluble in water. Soluble in alcohol, acetic acidSoluble in ethanol. Insoluble in water.
ε(extinction coefficient) ≥10000 at 282-288nm in methanol
≥20000 at 509-519nm in methanol
≥7000 at 329-335nm in methanol
λmax 410nm, 530nm, 427nm, 519nm
Merck 146,119
BRN 750102
Stability: Stable. Incompatible with strong oxidizing agents.
Major Application Waveguides, LED sensors, photoresists, liquid crystals, sol-gel matrix, optical sensors, paints, toys, detection of thiols, food freshness sensors, dental product, saliva sampling method, detecting lactic acid, carbohydrates
InChIKey CEQFOVLGLXCDCX-MSUUIHNZSA-N
CAS DataBase Reference 493-52-7
IARC 3 (Vol. 8, Sup 7) 1987
NIST Chemistry Reference Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-(493-52-7)
EPA Substance Registry System Methyl red (493-52-7)

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