CAS 1787-61-7

Negro de Eriochrome T

Descripción:

Negro de Eriochrome T, con el número CAS 1787-61-7, es un compuesto orgánico sintético comúnmente utilizado como indicador de pH y un indicador complejométrico en titulaciones, particularmente para determinar iones metálicos como el calcio y el magnesio. Aparece como un polvo azul oscuro o violeta y es soluble en agua, formando una solución roja a niveles de pH ácidos. El compuesto se caracteriza por su capacidad para formar complejos estables con iones metálicos, lo cual es crucial para su aplicación en química analítica. Negro de Eriochrome T tiene una fórmula molecular de C20H12N3NaO7S y presenta un grupo ácido sulfónico que mejora su solubilidad en soluciones acuosas. Su cambio de color de azul a rojo a medida que el pH pasa de alcalino a ácido lo convierte en una herramienta valiosa en varios análisis volumétricos. Sin embargo, es importante manejar este compuesto con cuidado, ya que puede representar riesgos para la salud si se ingiere o inhala, y se deben tomar las medidas de seguridad adecuadas durante su uso en entornos de laboratorio.

Fórmula: C₂₀H₁₃N₃O₇S·Na

InChI: 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);

Clave InChI: InChIKey=YUJFCGQWGATJPG-UHFFFAOYSA-N

SMILES: S(=O)(=O)(O)C=1C2=C(C(N=NC3=C(O)C4=C(C=C3)C=CC=C4)=C(O)C1)C=CC(N(=O)=O)=C2.[Na]

Sinónimos:

• Erichrome Black T
• sodium 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]-7-nitro-naphthalene-1-sulfonate
• Chromogene Black ET
• Eriochrome Balck T
• C.I. Mordant Black 11, monosodium salt (8CI)
• Mordant black 11
• Eriochrome Black T
• Eriochrome (R) black T
• 3-Hydroxy-4-(1-hydroxy-2-naphthylazo)-7-nitro-1-naphthalenesulfonic acid, sodium salt
• 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-6-nitro-4-naphthalenesulfonic acid, sodium salt
• C.I. Mordant Black 11, monosodium salt
• C.I.Mordant Black 11
• C.I. 14645
• C.I. Mordant Black 11 (VAN)
• 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]-7-nitro-, monosodium salt
• sodium (4Z)-4-[(1-hydroxynaphthalen-2-yl)hydrazono]-7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate
• 1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(1-hydroxy-2-naphthalenyl)diazenyl]-7-nitro-, sodium salt (1:1)
• Eriochrome Balck T250
• C.I. Mordant Black 11, monosodium salt
• Eriochrome black T supra
• Color index
• 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-, monosodium salt
• sodium 3-hydroxy-4-[(E)-(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate

Eriochrome Black T ACS

CAS: 1787-61-7

Fórmula: C₂₀H₁₂N₃NaO₇S

Forma y color: Brown to Black, Powder

Peso molecular: 461.39

Ref: SR-40876

Eriochrome Black T (1:100 diluted with NaCl)

CAS: 1787-61-7

Fórmula: C₂₀H₁₂N₃NaO₇S

Forma y color: Purple to Dark purple to Brown powder to crystal

Peso molecular: 461.38

Ref: 3B-E0487

Eriochrome Black T

CAS: 1787-61-7

Fórmula: C₂₀H₁₂N₃NaO₇S

Forma y color: Black powder to crystaline

Peso molecular: 461.38

Ref: 3B-E0214

Eriochrome Black T

CAS: 1787-61-7

Eriochrome black T is used as an indicator in analytical chemistry. It is also used in the detection of rare earth metals. It finds application in dyeing and printing of wool fabric, dyeing of silk and nylon as well as in leather dyeing. It can be used in the spectrophotometric determination of diph

Fórmula: C₂₀H₁₂N₃NaO₇S

Forma y color: Black, Crystals or powder or crystalline powder

Peso molecular: 461.38

Ref: 02-A17536

1-Naphthalenesulfonic acid,3-hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-, monosodium salt

CAS: 1787-61-7

Fórmula: C₂₀H₁₃N₃NaO₇S

Forma y color: Solid

Peso molecular: 462.3879

Ref: IN-DA00HZWD

Eriochrome Black T (C.I. 14645); ACS grade

CAS: 1787-61-7

Fórmula: C₂₀H₁₂N₃NaO₇S

Forma y color: Very dark brown or black powder

Peso molecular: 461.39

Ref: 7W-GT1416

Eriochrome Black T (C.I. 14645)

CAS: 1787-61-7

Fórmula: C₂₀H₁₂N₃NaO₇S

Pureza: 95 - 105 %

Forma y color: Black crystalline powder

Peso molecular: 461.39

Ref: 7W-GT2024

Eriochrome Black T

CAS: 1787-61-7

Eriochrome Black T

Pureza: IND

Peso molecular: 461.38g/mol

Ref: 54-OR1013110

Eriochrome black t

CAS: 1787-61-7

Fórmula: C₂₀H₁₂N₃NaO₇S

Forma y color: Solid

Peso molecular: 461.38

Ref: 10-F047074

Mordant Black 11 (Technical Grade)

CAS: 1787-61-7

Applications Mordant black 11 is a dye potentially useful as a metal indicator. Dyes and metabolites.

Fórmula: C₂₀H₁₂N₃O₇S·Na

Forma y color: Dark Brown To Black

Peso molecular: 461.38

Ref: TR-M635003

Eriochrome black T indicator (C.I. 14645), 1% solid

CAS: 1787-61-7

Pureza: IND

Forma y color: Solid

Peso molecular: 461.38

Ref: 10-F987448

Eriochrome Black T

CAS: 1787-61-7

Eriochrome Black T is a complexometric indicator. Eriochrome Black T is used in complexometric titrations.

Fórmula: C₂₀H₁₃N₃NaO₇S

Forma y color: Black Powder

Peso molecular: 462.39

Ref: TM-T19901

Mordant black 11 - Technical

CAS: 1787-61-7

Mordant Black 11 is a water-soluble dye that is used in the treatment of wastewater. Mordant Black 11 binds to surface particles and enhances the removal of organic matter from wastewater. It has been shown to be effective for the treatment of human serum, which contains high levels of proteins and other macromolecules. Mordant Black 11 efficiently adsorbs onto the surface of these macromolecules, leading to a decrease in the amount of protein adsorbed on the surface. The kinetic data for this process have been obtained by electrochemical impedance spectroscopy (EIS) and by measuring changes in pH due to ionization. A magnesium salt is required for the synthesis of Mordant Black 11, as well as potassium dichromate or other chromium salts and fatty acids.

Fórmula: C₂₀H₁₂N₃NaO₇S

Pureza: Min. 95%

Peso molecular: 461.38 g/mol

Ref: 3D-FM32792