Hydroxy naphthol blue, AR

Name: Hydroxy naphthol blue, AR
Brand: Vaqora Chemicals
SKU: VQ-046689

About Hydroxy naphthol blue, AR

Hydroxy naphthol blue is an indicator (AR grade) carrying the CAS registry number 63451-35-4. Its molecular formula is C20H11N2Na3O11S3 and its molecular weight is 620.5 g/mol.

Keep the container tightly sealed and store it in a cool, dry area. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Key uses span titration end-point detection, pH determination and analytical testing. It is used across academic and industrial research.

Vaqora Chemicals supplies Hydroxy naphthol blue in 25 g, 100 g and 500 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request. Larger quantities and custom packaging are available. Request a quote for pricing and lead time. Our team can advise on documentation, shipping classification and regulatory paperwork for your destination.

Typical applications

Titration end-point detection
pH determination
Analytical testing

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Hydroxy naphthol blue, AR
Catalogue No.	VQ-046689
CAS Number	63451-35-4
IUPAC name	trisodium;3-hydroxy-4-[(2-hydroxy-4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonate
Molecular formula	C₂₀H₁₁N₂Na₃O₁₁S₃
Molecular weight	620.5 g/mol
Exact mass	619.9218
Grade	AR
HSN code	29270090
InChIKey	AUIINJJXRXMPGT-UHFFFAOYSA-K
SMILES	C1=CC=C2C(=C1)C(=CC(=C2N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)[O-])O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]
PubChem CID	113232

Physical properties
Physical form	Other
H-bond donors / acceptors	2 / 13
TPSA	262 Å²

Documents

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

Other grades of CAS 63451-35-4

Hydroxy naphthol blue

CAS: 63451-35-4
Formula: C₂₀H₁₁N₂Na₃O₁₁S₃
MW: 620.5 g/mol

VQ-000369

Frequently asked questions

What is the CAS number of Hydroxy naphthol blue, AR?

The CAS Registry Number of Hydroxy naphthol blue, AR is 63451-35-4. It is also known as Trisodium 3-hydroxy-4-((2-hydroxy-4-sulphonato-1-naphthyl)azo)naphthalene-2,7-disulphonate, 1,1'-Azonaphthalene, 2,2'-dihydroxy-3,3',6-trisulfonic acid-, trisodium salt.

What is the molecular formula and molecular weight of Hydroxy naphthol blue, AR?

Hydroxy naphthol blue, AR has the molecular formula C20H11N2Na3O11S3 and a molecular weight of 620.5 g/mol.

Which grade and pack sizes of Hydroxy naphthol blue, AR can I order?

We supply Hydroxy naphthol blue, AR in AR grade, in 25 g, 100 g, 500 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Hydroxy naphthol blue, AR?

Yes. Every lot of Hydroxy naphthol blue, AR 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 Hydroxy naphthol blue, AR be shipped internationally?

Yes. We export Hydroxy naphthol blue, AR worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.