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Methyl Red indicator AR | 01743 Pallav Chemicals | MSDs COA

Home > Pallav Chemicals > pH Indicator (Solid) > Methyl Red indicator AR

Methyl Red indicator AR
C.I.No.13020 2-(N,N-Dimethyl-4-aminophenyl)azobenzenecarboxylic acid, C.I. Acid Red 2 ; acid base indicator

Product Code.
 01743
Grade
 AR
Purity
CAS No.
 493-52-7
Molecular Formula
 C15H15N3O2
Molecular Weight
 269.31
H.S.Code
 2927.00900
Shelf Life
 60 Months
COAs

Physical Properties

Physical state at 20 °C
Solid
 Colour
Dark red powder
 Odour
Odorless
Melting point/ Freezing point [°C]
179°C
 Vapour density
9.3
 Solubility in water [% weight]
Insoluble in water

Packaging

Specification

Appearance
Dark red to maroon to violet or purple powder or crystals
Identity
Passes test
pH transition range (4.4 - 6.2)
Pink Red - yellow orange
Insoluble matter in ethanol (1 g/L)
Passes test
Absorption maxima (buffer pH 4.5)
523 - 526 nm
Absorption maxima (buffer pH 6.2)
427 - 437 nm
Loss on dryig (at 110°C)
Max 5.0%
Residue on ignition (as SO4)
Max 2.0%

Safety Information and Hazard Symbols