m-Methyl red, 98%

About m-Methyl red, 98%

m-Methyl red is an indicator in Microscopy grade carrying the CAS registry number 20691-84-3 with a typical assay of 98%. Formula C15H15N3O2, molecular weight 269.3 g/mol. Its systematic (IUPAC) name is 3-[[4-(dimethylamino)phenyl]diazenyl]benzoic acid. It is also known as 4-Dimethylaminoazobenzene-3'-carboxylic acid or 3'-Carboxy-4-dimethylaminoazobenzene.

The material typically appears as an orange to brown solid. Store sealed in a dry, well-ventilated location away from incompatible materials. Good laboratory practice and suitable PPE are recommended during handling.

Key uses span titration end-point detection, pH determination, analytical testing and indicator for titrations. Typical end-use sectors are academic and industrial research and textiles and dyeing.

We offer m-Methyl red in 1 g and 5 g packs with a batch-specific COA, and ship to customers worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Titration end-point detection
pH determination
Analytical testing
Indicator for titrations

Industries

Specifications & identifiers

Chemical identifiers
Product name	m-Methyl red, 98%
Catalogue No.	VQ-000385
CAS Number	20691-84-3
IUPAC name	3-[[4-(dimethylamino)phenyl]diazenyl]benzoic acid
Molecular formula	C₁₅H₁₅N₃O₂
Molecular weight	269.3 g/mol
Exact mass	269.1164
Grade	Microscopy
Purity / assay	98%
HSN code	29420090
InChIKey	JAMPLPMVLCTBSB-UHFFFAOYSA-N
SMILES	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC(=C2)C(=O)O
PubChem CID	30230

Physical properties
Physical form	Solid
Appearance	Orange to brown solid
LogP (XLogP3)	4.1
H-bond donors / acceptors	1 / 5
TPSA	65.3 Å²
Synonyms	4-Dimethylaminoazobenzene-3'-carboxylic acid, 3-(2-(4-(Dimethylamino)phenyl)diazenyl)benzoic acid, 3'-Carboxy-4-dimethylaminoazobenzene, 3-((4-(Dimethylamino)phenyl)diazenyl)benzoic acid, 3-((p-(Dimethylamino)phenyl)azo)benzoic acid, Benzoic acid, 3-[2-[4-(dimethylamino)phenyl]diazenyl]-, Benzoic acid, m-((p-(dimethylamino)phenyl)azo)-, (E)-3-((4-(dimethylamino)phenyl)diazenyl)benzoic acid, Benzoic acid, 3-[[4-(dimethylamino)phenyl]azo]-, azobenzene, 3-carboxy-4'-dimethylamino-, 3-[4-(dimethylamino)phenyl]azobenzoic acid, 3-([4-(Dimethylamino)phenyl]diazenyl)benzoic acid #

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of m-Methyl red, 98%?

The CAS Registry Number of m-Methyl red, 98% is 20691-84-3. It is also known as 4-Dimethylaminoazobenzene-3'-carboxylic acid, 3-(2-(4-(Dimethylamino)phenyl)diazenyl)benzoic acid, 3'-Carboxy-4-dimethylaminoazobenzene.

What is the molecular formula and molecular weight of m-Methyl red, 98%?

m-Methyl red, 98% has the molecular formula C15H15N3O2 and a molecular weight of 269.3 g/mol. Its IUPAC name is 3-[[4-(dimethylamino)phenyl]diazenyl]benzoic acid.

Which grade and pack sizes of m-Methyl red, 98% can I order?

We supply m-Methyl red, 98% in Microscopy (98%) grade, in 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with m-Methyl red, 98%?

Yes. Every lot of m-Methyl red, 98% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can m-Methyl red, 98% be shipped internationally?

Yes. We export m-Methyl red, 98% worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.