Eriochrome Black T ACS reagent, ≥99.0%

Eriochrome Black T is a complexometric indicator commonly employed in tests for water hardness, particularly during EDTA titrations. It transitions from wine-red to blue as it binds and subsequently releases metal ions such as calcium and magnesium, facilitating the determination of their concentration in a solution.
• formula: C20H12N3O7SNa
• molar_mass: 461,381 g/mol
• appearance: dark red/brown powder
• acidity: 6.2, 11.55
• UN_number: 2923
• size_options: [‘5g’, ’25g’] • pack_size_options: [‘Single Item’, ‘Box of 4’] • chemical_code: CHE-I-E02
• chemical_grade: ACS Reagent
• cas_no: 1787-61-7
• chemical_synonyms: Mordant Black 11, Fast Chrome Black T.

• size: [‘5g’, ’25g’] • pack_size: [‘Single Item’, ‘Box of 4’] Powders & Dyes