Hydroxy naphthol blue

Name: Hydroxy naphthol blue
Brand: Vaqora Chemicals
SKU: VQ-000369

About Hydroxy naphthol blue

Hydroxy naphthol blue is an indicator carrying the CAS registry number 63451-35-4. Formula C20H11N2Na3O11S3, molecular weight 620.5 g/mol. The IUPAC name is trisodium, 3-hydroxy-4-[(2-hydroxy-4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonate. Alternative names: Hydroxynaphthol blue and Hydroxynapthol Blue (Technical Grade).

In its supplied form it is a black-violet powder. Keep the container tightly sealed and store it in a cool, dry area. Good laboratory practice and suitable PPE are recommended during handling.

Typical applications include titration end-point detection, pH determination and analytical testing. Our customers for this product work in academic and industrial research and metallurgy and mining.

We offer Hydroxy naphthol blue in 5 g, 25 g, 100 g and 500 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

Industries

Specifications & identifiers

Chemical identifiers
Product name	Hydroxy naphthol blue
Catalogue No.	VQ-000369
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
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	Powder
Appearance	Black-violet powder
Solubility	Souble (water)
H-bond donors / acceptors	2 / 13
TPSA	262 Å²
Synonyms	1-(2-Hydroxy-4-sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid trisodium salt, Hydroxynaphthol blue, Hydroxynapthol Blue (Technical Grade), 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

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

AR

Hydroxy naphthol blue, AR

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

VQ-046689

Frequently asked questions

What is the CAS number of Hydroxy naphthol blue?

The CAS Registry Number of Hydroxy naphthol blue is 63451-35-4. It is also known as 1-(2-Hydroxy-4-sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid trisodium salt, Hydroxynaphthol blue, Hydroxynapthol Blue (Technical Grade).

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

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

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

We supply Hydroxy naphthol blue, in 5 g, 25 g, 100 g, 500 g, 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

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

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

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