Skip to the beginning of the images gallery

Methyl red alcoholic solution - 0.02% alcohol solution, high purity , CAS No.493-52-7

72 Citations

COA

Grade & Purity:

0.02% alcohol solution

Cas Number: 493-52-7
Molecular Weight: 269.3
Beilstein Registry Number: 750102
EC Number: 207-776-1
PubChem CID: 10303

In stock

Item Number

M196496

Grouped product items
SKU	Size	Availability	Price	Qty
M196496-100ml	100ml	Available within 8-12 weeks(?) Production requires sourcing of materials. We appreciate your patience and understanding.	$48.90

Basic Description

Synonyms	M0421 \| DB08209 \| Methyl red, CI 13020 \| o-[[p-(Dimethylamino)phenyl]azo]benzoic acid \| 2-((4-(dimethylamino)phenyl)diazenyl)benzoic acid \| A827705 \| STK391287 \| 4-Dimethylamino-2'-carboxylazobenzene \| Tox21_301336 \| Methyl Red free acid ACS \| 2-(4-Dimeth
Specifications & Purity	0.02% alcohol solution
Shipped In	Normal
Product Description	Methyl red (MR) is an anionic azo dye. It changes from red to yellow when pH of aqueous solution is altered from 4.4 to 6.2. pKa of the indicator is 4.80. MR was used to study its degradation using Fenton′s reagent

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Organoheterocyclic compounds
  - Class Azobenzenes

Kingdom	Organic compounds
Superclass	Organoheterocyclic compounds
Class	Azobenzenes
Subclass	Not available
Intermediate Tree Nodes	Not available
Direct Parent	Azobenzenes
Alternative Parents	Benzoic acids Dialkylarylamines Benzoyl derivatives Aniline and substituted anilines Azo compounds Amino acids Propargyl-type 1,3-dipolar organic compounds Monocarboxylic acids and derivatives Carboxylic acids Organopnictogen compounds Organooxygen compounds Organic oxides Hydrocarbon derivatives
Molecular Framework	Aromatic homomonocyclic compounds
Substituents	Azobenzene - Benzoic acid or derivatives - Benzoic acid - Benzoyl - Tertiary aliphatic/aromatic amine - Dialkylarylamine - Aniline or substituted anilines - Benzenoid - Monocyclic benzene moiety - Amino acid - Azo compound - Tertiary amine - Amino acid or derivatives - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Carboxylic acid derivative - Monocarboxylic acid or derivatives - Carboxylic acid - Organic oxide - Organonitrogen compound - Amine - Organic oxygen compound - Organic nitrogen compound - Organooxygen compound - Organopnictogen compound - Hydrocarbon derivative - Aromatic homomonocyclic compound
Description	This compound belongs to the class of organic compounds known as azobenzenes. These are organonitrogen aromatic compounds that contain a central azo group, where each nitrogen atom is conjugated to a benzene ring.
External Descriptors	Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61. DOI: 10.1186/s13321-016-0174-y

Names and Identifiers

IUPAC Name	2-[[4-(dimethylamino)phenyl]diazenyl]benzoic acid
INCHI	InChI=1S/C15H15N3O2/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20/h3-10H,1-2H3,(H,19,20)
InChIKey	CEQFOVLGLXCDCX-UHFFFAOYSA-N
Smiles	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)O
Isomeric SMILES	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)O
WGK Germany	2
Molecular Weight	269.3
Beilstein	750102
Reaxy-Rn	750102
Reaxys-RN_link_address	https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=750102&ln=

Certificates（CoA,COO,BSE/TSE and Analysis Chart)

C of A & Other Certificates(BSE/TSE, COO):

Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

1 results found

Lot Number	Certificate Type	Date	Item
A2014019	Certificate of Analysis	Oct 20, 2023	M196496

Chemical and Physical Properties

Sensitivity	Moisture sensitive
Melt Point(°C)	179 - 182 °C
Molecular Weight	269.300 g/mol
XLogP3	3.300
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	4
Exact Mass	269.116 Da
Monoisotopic Mass	269.116 Da
Topological Polar Surface Area	65.300 Å²
Heavy Atom Count	20
Formal Charge	0
Complexity	349.000
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	1

Solution Calculators

Molarity Calculator

Determine the necessary mass, volume, or concentration for preparing a solution.

Mass

Concentration

Volume

M. Wt*

g/mol

*When preparing stock solutions, always use the batch-specific molecular weight of the product found on the vial label and the Certificate of Analysis (available online).

Dilution Calculator

Determine the dilution needed to prepare a stock solution.

Concentration 1 (C1)

Volume 1 (V1)

Concentration 2 (C2)

Volume 2 (V2)

Reconstitution Calculator

The reconstitution calculator enables you to quickly determine the volume of a reagent needed to reconstitute your vial. Just enter the mass of the reagent and the target concentration, and the calculator will do the rest.

Volume (to add to vial)

Mass (in vial)

Desired Reconstitution Concentration