CAS 1787-61-7

Nero di Eriochrome T

Descrizione:

Nero di Eriochrome T, con il numero CAS 1787-61-7, è un composto organico sintetico comunemente utilizzato come indicatore di pH e un indicatore complessometrico nelle titolazioni, in particolare per determinare ioni metallici come calcio e magnesio. Si presenta come una polvere blu scuro o viola ed è solubile in acqua, formando una soluzione rossa a livelli di pH acidi. Il composto è caratterizzato dalla sua capacità di formare complessi stabili con ioni metallici, il che è cruciale per la sua applicazione in chimica analitica. Nero di Eriochrome T ha una formula molecolare di C20H12N3NaO7S e presenta un gruppo acido solfonico che ne migliora la solubilità nelle soluzioni acquose. Il suo cambiamento di colore da blu a rosso mentre il pH passa da alcalino ad acido lo rende uno strumento prezioso in varie analisi volumetriche. Tuttavia, è importante maneggiare questo composto con cura, poiché può comportare rischi per la salute se ingerito o inalato, e devono essere adottate le opportune misure di sicurezza durante il suo utilizzo in ambienti di laboratorio.

Formula: 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);

InChI key: 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]

Sinonimi:

• 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

Formula: C₂₀H₁₂N₃NaO₇S

Colore e forma: Brown to Black, Powder

Peso molecolare: 461.39

Ref: SR-40876

Eriochrome Black T (1:100 diluted with NaCl)

CAS: 1787-61-7

Formula: C₂₀H₁₂N₃NaO₇S

Colore e forma: Purple to Dark purple to Brown powder to crystal

Peso molecolare: 461.38

Ref: 3B-E0487

Eriochrome Black T

CAS: 1787-61-7

Formula: C₂₀H₁₂N₃NaO₇S

Colore e forma: Black powder to crystaline

Peso molecolare: 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

Formula: C₂₀H₁₂N₃NaO₇S

Colore e forma: Black, Crystals or powder or crystalline powder

Peso molecolare: 461.38

Ref: 02-A17536

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

CAS: 1787-61-7

Formula: C₂₀H₁₃N₃NaO₇S

Colore e forma: Solid

Peso molecolare: 462.3879

Ref: IN-DA00HZWD

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

CAS: 1787-61-7

Formula: C₂₀H₁₂N₃NaO₇S

Colore e forma: Very dark brown or black powder

Peso molecolare: 461.39

Ref: 7W-GT1416

Eriochrome Black T (C.I. 14645)

CAS: 1787-61-7

Formula: C₂₀H₁₂N₃NaO₇S

Purezza: 95 - 105 %

Colore e forma: Black crystalline powder

Peso molecolare: 461.39

Ref: 7W-GT2024

Eriochrome Black T

CAS: 1787-61-7

Eriochrome Black T

Purezza: IND

Peso molecolare: 461.38g/mol

Ref: 54-OR1013110

Eriochrome black t

CAS: 1787-61-7

Formula: C₂₀H₁₂N₃NaO₇S

Colore e forma: Solid

Peso molecolare: 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.

Formula: C₂₀H₁₂N₃O₇S·Na

Colore e forma: Dark Brown To Black

Peso molecolare: 461.38

Ref: TR-M635003

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

CAS: 1787-61-7

Purezza: IND

Colore e forma: Solid

Peso molecolare: 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.

Formula: C₂₀H₁₃N₃NaO₇S

Colore e forma: Black Powder

Peso molecolare: 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.

Formula: C₂₀H₁₂N₃NaO₇S

Purezza: Min. 95%

Peso molecolare: 461.38 g/mol

Ref: 3D-FM32792