[1,1'-Biphenyl]-2,2'-Disulfonicacid, 4,4'-Bis[2-(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Diazenyl]-, Sodium Salt(1:4)

Product Name [1,1'-Biphenyl]-2,2'-Disulfonicacid, 4,4'-Bis[2-(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Diazenyl]-, Sodium Salt(1:4)
Alias Congo Red
Einecs 233-358-3
Mininmum Order 1 g
Factory Site Wusu, Tacheng Prefecture, Xinjiang, China
Price Inquiry sales7@alchemist-chem.com
Manufacturer Ccount Chem
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Specifications

HS Code	130461
Cas Number	3536-49-0
Molecular Formula	C32H20N6Na4O14S4
Molecular Weight	958.85 g/mol
Appearance	Red to brown powder
Solubility In Water	Very soluble
Melting Point	Decomposes on heating
Iupac Name	[1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-bis[2-(2-hydroxy-6-sulfo-1-naphthalenyl)diazenyl]-, tetrasodium salt
Common Uses	Dye, pH indicator, reagent
Synonyms	Congo Red; Direct Red 28
Hazard Statements	May cause allergic skin reaction

As an accredited [1,1'-Biphenyl]-2,2'-Disulfonicacid, 4,4'-Bis[2-(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Diazenyl]-, Sodium Salt(1:4) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

Packing & Storage

Packing	Packaged in a 500g sealed amber plastic bottle, featuring a chemical-resistant screw cap, hazard labeling, and tamper-evident seal.
Storage	[1,1'-Biphenyl]-2,2'-Disulfonic acid, 4,4'-Bis[2-(2-Hydroxy-6-Sulfo-1-naphthalenyl)diazenyl]-, sodium salt (1:4) should be stored in a tightly closed container, in a cool, dry, well-ventilated area away from incompatible substances. Protect from light, heat, and moisture. Store at room temperature and avoid contact with acids, oxidizers, and reducing agents. Ensure appropriate labeling and keep away from food and drink.
Shipping	This chemical is shipped in tightly sealed containers, protected from moisture and light, and labeled according to hazardous materials regulations. It should be transported in compliance with local, national, and international guidelines for chemicals, including UN numbers if applicable. Handle with care, avoid direct contact, and store at controlled room temperature.

Free Quote

Competitive [1,1'-Biphenyl]-2,2'-Disulfonicacid, 4,4'-Bis[2-(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Diazenyl]-, Sodium Salt(1:4) prices that fit your budget—flexible terms and customized quotes for every order.

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Tel: +8615371019725

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