493-52-7

Product Name: Methyl Red

Formula: C15H15N3O2

Synonyms: 2-(4-Dimethylaminophenylazo)benzoic acid;4-Dimethylaminoazobenzene-2′-carboxylic acid;Acid Red 2;Methyl red (C.I. 13020);Methyl red indicator solution

Inquiry

CHEMICAL AND PHYSICAL PROPERTIES SAFETY INFORMATION COMPUTED DESCRIPTORS PRODUCT INTRODUCTION RELATED SUPPLIERS

CHEMICAL AND PHYSICAL PROPERTIES

Physical Description	Violet crystals; [Sax]
Color/Form	GLISTENING, VIOLET CRYSTALS FROM TOLUENE
Melting Point	181-182 °C
Solubility	ALMOST INSOL IN WATER; SOL IN ALC & ACETIC ACID
Vapor Pressure	0.00000014 [mmHg]
Dissociation Constants	PKA1 2.5; PKA2 9.5; PKB 4.8
Chemical Classes	Dyes -> Azo Dyes

SAFETY INFORMATION

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07 Health Hazard GHS08
GHS Hazard Statements	H225:Flammable liquids H319:Serious eye damage/eye irritation H371:Specific target organ toxicity, single exposure
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P337+P313:IF eye irritation persists: Get medical advice/attention. P403+P235:Store in a well-ventilated place. Keep cool.

COMPUTED DESCRIPTORS

Molecular Weight	269.30 g/mol
XLogP3	3.3
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	4
Exact Mass	269.116426730 g/mol
Monoisotopic Mass	269.116426730 g/mol
Topological Polar Surface Area	65.3 Å²
Heavy Atom Count	20
Formal Charge	0
Complexity	349
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
Covalently-Bonded Unit Count	1
Compound Is Canonicalized	Yes

PRODUCT INTRODUCTION

description

Methyl red is an azo dye consisting of benzoic acid substituted at position 2 by a 4-[(dimethylamino)phenyl]diazenyl group. It has a role as a dye. It is a member of azobenzenes, a monocarboxylic acid and a tertiary amino compound. It is a conjugate acid of a methyl red(1-).