Sulphonazo III

Name: Sulphonazo III
Brand: Vaqora Chemicals
SKU: VQ-010980

About Sulphonazo III

Sulphonazo III is an organosulfur compound carrying the CAS registry number 68504-35-8 with a typical assay of 90%. Formula C22H12N4Na4O14S4, molecular weight 776.6 g/mol. Systematically, it is named tetrasodium, 4,5-dihydroxy-3,6-bis[(2-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate. Alternative names: Sulfonazo III and Sulfonazo III sodium salt.

The material typically appears as dark green to black powder or crystals. Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span analytical determinations and indicator for titrations. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Sulphonazo III in 1 g, 5 g, 25 g and 100 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical determinations
Indicator for titrations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Sulphonazo III
Catalogue No.	VQ-010980
CAS Number	68504-35-8
IUPAC name	tetrasodium;4,5-dihydroxy-3,6-bis[(2-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate
Molecular formula	C₂₂H₁₂N₄Na₄O₁₄S₄
Molecular weight	776.6 g/mol
Exact mass	775.8824
Purity / assay	90%
HSN code	29270090
InChIKey	FCMRBZBGGXLKBC-UHFFFAOYSA-J
SMILES	C1=CC=C(C(=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=CC=C4S(=O)(=O)[O-])O)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
PubChem CID	135465064

Physical properties
Physical form	Crystalline
Appearance	Dark green to black powder or crystals
H-bond donors / acceptors	2 / 18
TPSA	352 Å²
Synonyms	Sulfonazo III, Tetrasodium 4,5-dihydroxy-3,6-bis((2-sulphonatophenyl)azo)naphthalene-2,7-disulphonate, Sulfonazo III sodium salt, Sulfonazo III Salt, Sulfonazo III Sodium Salt (Technical Grade), starbld0009660, 3,6-bis[o-Sulfophenylazo]-4,5-di- hydroxy-2,7-naphthalenedisulfonic acid, 2,7-Bis(2-sulfophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic Acid Tetrasodium Salt

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

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 Sulphonazo III?

The CAS Registry Number of Sulphonazo III is 68504-35-8. It is also known as Sulfonazo III, Tetrasodium 4,5-dihydroxy-3,6-bis((2-sulphonatophenyl)azo)naphthalene-2,7-disulphonate, Sulfonazo III sodium salt.

What is the molecular formula and molecular weight of Sulphonazo III?

Sulphonazo III has the molecular formula C22H12N4Na4O14S4 and a molecular weight of 776.6 g/mol.

Which grade and pack sizes of Sulphonazo III can I order?

We supply Sulphonazo III in (90%) grade, in 1 g, 5 g, 25 g, 100 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sulphonazo III?

Yes. Every lot of Sulphonazo III 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 Sulphonazo III be shipped internationally?

Yes. Sulphonazo III is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.