Eriochrome black T

Name: Eriochrome black T
Brand: Vaqora Chemicals
SKU: VQ-000354

About Eriochrome black T

Listed under CAS 1787-61-7, Eriochrome black T is an indicator available from Vaqora Chemicals. Formula C20H12N3NaO7S, molecular weight 461.4 g/mol. Its systematic (IUPAC) name is sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate. Alternative names: Solochrome Black T and ET-00.

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

Key uses span titration end-point detection, pH determination, analytical testing and coordination chemistry. Our customers for this product work in academic and industrial research.

Available in 25 g, 100 g, 500 g and 1 kg packs, Eriochrome black T is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Titration end-point detection
pH determination
Analytical testing
Coordination chemistry

Industries

Specifications & identifiers

Chemical identifiers
Product name	Eriochrome black T
Catalogue No.	VQ-000354
CAS Number	1787-61-7
IUPAC name	sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate
Molecular formula	C₂₀H₁₂N₃NaO₇S
Molecular weight	461.4 g/mol
Exact mass	461.0294
HSN code	32049000
InChIKey	AMMWFYKTZVIRFN-UHFFFAOYSA-M
SMILES	C1=CC=C2C(=C1)C=CC(=C2O)N=NC3=C4C=CC(=CC4=C(C=C3O)S(=O)(=O)[O-])[N+](=O)[O-].[Na+]
PubChem CID	135465089

Physical properties
Physical form	Powder
Appearance	Black powder
H-bond donors / acceptors	2 / 9
TPSA	177 Å²
Synonyms	Solochrome Black T, ET-00, C.I. Mordant Black 11, monosodium salt, Mordant Black 11, Fast Chrome Black T, Hispacrom Black T, Magracrom Black A, Diacromo Black PA, Acid Chrome Black A, Solochrome Black, Potting Black C, Chrome Black PB

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 1787-61-7

AR

Eriochrome black T, GR indicator

CAS: 1787-61-7
Formula: C₂₀H₁₂N₃NaO₇S
MW: 461.4 g/mol

VQ-000562

Frequently asked questions

What is the CAS number of Eriochrome black T?

The CAS Registry Number of Eriochrome black T is 1787-61-7. It is also known as Solochrome Black T, ET-00, C.I. Mordant Black 11, monosodium salt.

What is the molecular formula and molecular weight of Eriochrome black T?

Eriochrome black T has the molecular formula C20H12N3NaO7S and a molecular weight of 461.4 g/mol. Its IUPAC name is sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate.

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

We supply Eriochrome black T, in 25 g, 100 g, 500 g, 1 kg, 5 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Eriochrome black T?

Yes. Every lot of Eriochrome black T 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 black T be shipped internationally?

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