858390

Eriochrome^® Black T

ACS reagent (indicator grade)

• Synonyme(s) : Mordant Black 11
• Formule empirique (notation de Hill): C₂₀H₁₂N₃NaO₇S
• Numéro CAS: 1787-61-7
• Poids moléculaire : 461.38
• Numéro C.I. (Colour Index): 14645
• Numéro Beilstein : 4121162
• Numéro CE : 217-250-3
• Numéro MDL: MFCD00003935
• Code UNSPSC : 12171500
• ID de substance PubChem : 24888460
• Nomenclature NACRES : NA.47

Propriétés

• Qualité: ACS reagent (indicator grade)
• Niveau de qualité: 200
• Forme: powder
• Limpidité de la solution: passes test
• Technique(s): titration: suitable
• λmax: 503 nm
• Adéquation: passes test for complexometric indicator
• Application(s): diagnostic assay manufacturing; hematology; histology
• Température de stockage: room temp
• Chaîne SMILES: [Na+].Oc1cc(c2cc(ccc2c1\N=N\c3ccc4ccccc4c3O)[N+]([O-])=O)S([O-])(=O)=O
• InChI: 1S/C20H13N3O7S.Na/c24-17-10-18(31(28,29)30)15-9-12(23(26)27)6-7-14(15)19(17)22-21-16-8-5-11-3-1-2-4-13(11)20(16)25;/h1-10,24-25H,(H,28,29,30);/q;+1/p-1/b22-21+;
• Clé InChI: AMMWFYKTZVIRFN-QUABFQRHSA-M

Description

Description générale

Eriochrome^® Black T is a hydroxyl-arylazo dye and is generally supplied as a monosodium salt. This dye exists as a dark violet powder with green metallic sheen. Eriochrome Black T is soluble in water and alcohol, but insoluble in common organic solvents. It is mainly used as an indicator in ethylenediaminetetraacetic acid (EDTA) method to determine hardness of water.

Eriochrome^® Black T is used as an indicator for complexometric titrations. It functions as an acid-base indicator. Eriochrome^® Black T forms complex with Ca²⁺ and Mg²⁺, but it binds more strongly to Mg²⁺ ions.

Application

Eriochrome^® Black T has been used to determine the concentration of Ca²⁺ using complexometric titration method.

Informations légales

Eriochrome is a registered trademark of Huntsman Petrochemical, LLC

Informations sur la sécurité

• Pictogrammes: GHS07,GHS09
• Mention d'avertissement: Warning
• Mentions de danger: H319,H411
• Conseils de prudence: P264 - P273 - P280 - P305 + P351 + P338 - P337 + P313 - P391
• Classification des risques: Aquatic Chronic 2 - Eye Irrit. 2
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 2
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)