B

Brilliant green

IUPAC: [4-[[4-(diethylamino)phenyl]-phenylmethylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium;hydrogen sulfate

C27H34N2O4S Indicators CAS 633-03-4
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Quick Reference
Formula / NotationC27H34N2O4S
CAS Number633-03-4
Molecular Weight482.6
Melting Point210 °C, decomposes.
Solubility40 mg/ml in water; 60 mg/ml in 2-methoxyethanol; 50 mg/ml in ethanol
AppearanceGold crystals; [Merck Index] Hygroscopic; [MSDSonline]
Also Known As[4-[[4-(diethylamino)phenyl]-phenylmethylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium;hydrogen sulfate; 633-03-4; Basic green 1; Malachite Green G; Diamond Green G; C.I. Basic Green 1; Fast Green J; Solid Green; Basic Brilliant Green; Basic Green V
CategoryIndicators

What is Brilliant green?

Brilliant green is an organic hydrogensulfate salt having 4-{[4-(diethylamino)phenyl](phenyl)methylidene}-N,N-diethylcyclohexa-2,5-dien-1-iminium as the counterion. It has a role as an antibacterial agent, an antiseptic drug, a fluorochrome, a poison, a histological dye and an environmental contaminant. It contains a brilliant green cation.

Formula & Notation

C27H34N2O4S

IUPAC Name: [4-[[4-(diethylamino)phenyl]-phenylmethylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium;hydrogen sulfate

Other Names / Synonyms: [4-[[4-(diethylamino)phenyl]-phenylmethylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium;hydrogen sulfate; 633-03-4; Basic green 1; Malachite Green G; Diamond Green G; C.I. Basic Green 1; Fast Green J; Solid Green; Basic Brilliant Green; Basic Green V

Properties & Characteristics

Appearance: Gold crystals; [Merck Index] Hygroscopic; [MSDSonline]. Molecular formula: C27H34N2O4S. Molecular weight: 482.6 g/mol. Melting point: 210 °C, decomposes.. Solubility: 40 mg/ml in water; 60 mg/ml in 2-methoxyethanol; 50 mg/ml in ethanol.

Physical Data

PropertyValue
Melting Point210 °C, decomposes.
Molecular Weight482.6
Solubility40 mg/ml in water; 60 mg/ml in 2-methoxyethanol; 50 mg/ml in ethanol
AppearanceGold crystals; [Merck Index] Hygroscopic; [MSDSonline]

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 Brilliant green
Formula C27H34N2O4S
CAS Number 633-03-4
Molecular Weight 482.6
Category Indicators
Synonyms [4-[[4-(diethylamino)phenyl]-phenylmethylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium;hydrogen sulfate; 633-03-4; Basic green 1; Malachite Green G; Diamond Green G; C.I. Basic Green 1; Fast Green J; Solid Green; Basic Brilliant Green; Basic Green V

Frequently Asked Questions

Brilliant green is an organic hydrogensulfate salt having 4-{[4-(diethylamino)phenyl](phenyl)methylidene}-N,N-diethylcyclohexa-2,5-dien-1-iminium as the counterion. It has a role as an antibacterial agent, an antiseptic drug, a fluorochrome, a poison, a histological dye and an environmental contaminant. It contains a brilliant green cation.

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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.