Eriochrome blue black B

Name: Eriochrome blue black B
Brand: Vaqora Chemicals
SKU: VQ-000563

About Eriochrome blue black B

Listed under CAS 3564-14-5, Eriochrome blue black B is a biological stain available from Vaqora Chemicals. With the molecular formula C20H13N2NaO5S, it has a molar mass of 416.4 g/mol. The IUPAC name is sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]naphthalene-1-sulfonate. Common synonyms include Acid Red 51 and Erythrosin extra bluish.

It is supplied as a powder. Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and analytical determinations. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Eriochrome blue black B in 5 g, 25 g, 100 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Analytical determinations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Eriochrome blue black B
Catalogue No.	VQ-000563
CAS Number	3564-14-5
IUPAC name	sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]naphthalene-1-sulfonate
Molecular formula	C₂₀H₁₃N₂NaO₅S
Molecular weight	416.4 g/mol
Exact mass	416.0443
HSN code	29429090
InChIKey	HOWITLLZNKSJOJ-UHFFFAOYSA-M
SMILES	C1=CC=C2C(=C1)C=CC(=C2O)N=NC3=C(C=C(C4=CC=CC=C43)S(=O)(=O)[O-])O.[Na+]
PubChem CID	135465071

Physical properties
Physical form	Powder
Appearance	Powder
H-bond donors / acceptors	2 / 7
TPSA	131 Å²
Synonyms	2',4',5',7'-Tetraiodofluorescein disodium salt, Acid Red 51, Erythrosin extra bluish, Iodoeosin, Eriochrome Blue Black, eriochrome blue-black b, Sodium 3-hydroxy-4-((1-hydroxy-2-naphthyl)azo)naphthalene-1-sulphonate, Sodium 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]naphthalene-1-sulphonate, Mordant Black 3, Diacromo Blue G, C.I. Mordant Black 3 monosodium salt, Hispacrom Blue BG

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H319Causes serious eye irritation

Precautionary statements: P264 + P265, P280, P305 + P351 + P338, P337 + P317

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 Eriochrome blue black B?

The CAS Registry Number of Eriochrome blue black B is 3564-14-5. It is also known as 2',4',5',7'-Tetraiodofluorescein disodium salt, Acid Red 51, Erythrosin extra bluish.

What is the molecular formula and molecular weight of Eriochrome blue black B?

Eriochrome blue black B has the molecular formula C20H13N2NaO5S and a molecular weight of 416.4 g/mol. Its IUPAC name is sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]naphthalene-1-sulfonate.

Which grade and pack sizes of Eriochrome blue black B can I order?

We supply Eriochrome blue black B, in 5 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Eriochrome blue black B?

Yes. Every lot of Eriochrome blue black B 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 Eriochrome blue black B be shipped internationally?

Yes. Eriochrome blue black B 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.