E

Eriochrome Black T

IUPAC: sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate

C20H12N3NaO7S Indicators CAS 1787-61-7
AllChemicals — The Online Chemical Glossary | https://allchemicals.info/chemical/eriochrome-black-t
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Quick Reference
Formula / NotationC20H12N3NaO7S
CAS Number1787-61-7
Molecular Weight461.4
Also Known Assodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate; C.I. Mordant Black 11, monosodium salt; DTXSID4061969; RefChem:1080564; DTXCID4035679; 1787-61-7; Mordant Black 11; Acid Chrome Black A; Solochrome Black T; Fast Chrome Black T
CategoryIndicators

What is Eriochrome Black T?

Eriochrome Black T (C20H12N3NaO7S) is a chemical indicator. It has 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.

Formula & Notation

C20H12N3NaO7S

IUPAC Name: sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate

Other Names / Synonyms: sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate; C.I. Mordant Black 11, monosodium salt; DTXSID4061969; RefChem:1080564; DTXCID4035679; 1787-61-7; Mordant Black 11; Acid Chrome Black A; Solochrome Black T; Fast Chrome Black T

Properties & Characteristics

Molecular formula: C20H12N3NaO7S. Molecular weight: 461.4 g/mol.

Uses & Applications

Used as a pH indicator in acid-base titrations, analytical chemistry, and chemical education demonstrations.

Safety Information

May be irritant or toxic in concentrated form. Handle with care. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Eriochrome Black T
Formula C20H12N3NaO7S
CAS Number 1787-61-7
Molecular Weight 461.4
Category Indicators
Index All "E" terms
Synonyms sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate; C.I. Mordant Black 11, monosodium salt; DTXSID4061969; RefChem:1080564; DTXCID4035679; 1787-61-7; Mordant Black 11; Acid Chrome Black A; Solochrome Black T; Fast Chrome Black T

Frequently Asked Questions

Eriochrome Black T (C20H12N3NaO7S) is a chemical indicator. It has 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.

More "E" Terms

1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide C8H18ClN3 2-Ethoxyethanol C4H10O2 Effective Collisions Effective Collisions E ≥ Ea (activation energy required) Effective Molality m_eff = i × m (van't Hoff factor) Effective Nuclear Charge Z_eff = Z − σ (Slater's rules) Efflorescence Hydrated salt losing water in air: M·nH₂O(s) → M·(n-x)H₂O(s) + xH₂O(g) Einsteinium Es Electrical Conductivity κ = 1/ρ; Λm = κ/c Electrochemical Cell Galvanic cell: ΔG = −nFE_cell; Electrolytic cell: ΔG = +nFE_applied Electrochemical Series Arranged by E° (standard reduction potential); SHE: E° = 0.00 V Electrochemistry E° cell = E° cathode − E° anode | ΔG° = −nFE°
View all "E" terms →
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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.

AllChemicals.info — The Online Chemical Glossary | https://allchemicals.info/chemical/eriochrome-black-t

For educational purposes only. Verify all information before use.