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
| 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 Ų |
| 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-).