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Methyl Red IND Grade Reagent

Cas Number:493-52-7
Formula: C15H15N3O2
Molar Mass:269.3
EC Number:207-776-1

Methyl Red IND Grade Reagent

Cas Number:493-52-7

Formula: C₁₅H₁₅N₃O₂

Molar Mass:269.3

EC Number:207-776-1

Properties:

Reddish brown powder. It is soluble in ethanol, and almost insoluble in water.

Usage:

Acid-base indicator, pH color change range 2.0 (red) ~ 4.0 (yellow).

Packing:

500g/25kg

Item of Analysis	Standard
pH discoloration domain	4.5(Red)~6.2(Yellow)
Loss on drying,%	1.0 max
Residue on ignition(as SO₄) ,%	0.2 max
Solubility in ethanol	to pass test
Greatest absorption wavelength(λ1,pH4.5))/nm	523~528
Greatest absorption wavelength(λ2,pH6.2))/nm	427~437
Mass absorption coefficient(λ1,pH4.5 )/(L/cm·g)	130 min
Mass absorption coefficient(λ2,pH6.2)/(L/cm·g)	70 min

Item of Analysis	Standard
pH discoloration domain	4.5(Red)~6.2(Yellow)
Loss on drying,%	1.0 max
Residue on ignition(as SO₄) ,%	0.2 max
Solubility in ethanol	to pass test
Greatest absorption wavelength(λ1,pH4.5))/nm	523~528
Greatest absorption wavelength(λ2,pH6.2))/nm	427~437
Mass absorption coefficient(λ1,pH4.5 )/(L/cm·g)	130 min
Mass absorption coefficient(λ2,pH6.2)/(L/cm·g)	70 min

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