COA Center

OR

MSDS/SDS Center

Advanced Search

METHYL RED INDICATOR AR

C.I.No.13020
2-(N,N-Dimethyl-4-aminophenyl)azobenzenecarboxylic acid, C.I. Acid Red 2

COAs

Packings

25 g (00025)

100 g (00100)

1000 g (01000)

1PB1200060 1PB1200500
Print friendly version
Article No. 04675 Grade AR
Purity CAS No. 493-52-7
Molecular Formula C15H15N3O2 Molecular Weight 269.31
H.S. Code 2927.0090 Shelf Life 60 Months

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

Specifications

Appearance Dark red to maroon to violet or purple powder or crystals Identity Passes test
pH transition range (4.2 - 6.2) Pink Red – yellow orange Insoluble matter in ethanol (1 g/L) Passes test
Absorption maxima (buffer pH 4.2) 523 - 526 nm Absorption maxima (buffer pH 6.2) 427 - 437 nm
Loss on drying (at 110°C) Max 5.0% Residue on ignition (as SO4) Max 2.0%

Safety Information and Hazard Symbols

Safety Statement: 22-24/25
Revision Date: 07-May-2021

Download MSDS & COA on your Mobile through LOBACHEMIE APP