Compound Q&A

What are the main uses of Eriochrome black T indicator (CAS: 1787-61-7)?

Answer

Eriochrome black T indicator (C.I. 14645), 1% solid
Eriochrome black T indicator (CAS: 1787-61-7) is widely used in pharmaceuticals for metal ion analysis, in industrial processes for water hardness testing, and in food safety to detect calcium and magnesium. It also serves as a research tool in analytical chemistry for titration and quality control applications.

About

CAS No 1787-61-7
English Name Eriochrome black T indicator (C.I. 14645), 1% solid
Molecular Formula C20H12N3NaO7S
Molecular Weight 461.4 g/mol
SMILES C1=CC=C2C(=C1)C=CC(=C2O)N=NC3=C4C=CC(=CC4=C(C=C3O)S(=O)(=O)[O-])[N+](=O)[O-].[Na+]
InChIKey AMMWFYKTZVIRFN-UHFFFAOYSA-M
Last Updated: 2025-08-25 01:09

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