Thermo Scientific Chemicals Eriochrome Black T

Catalog No.	Quantity
AAA1753622	100 g
AAA1753636	500 g

Catalog No. AAA1753622 Supplier Thermo Scientific Chemicals Supplier No. A1753622

Description

CAS: 1787-61-7 | C20H12N3NaO7S | 461.38 g/mol

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 diphenhydramine hydrochloride in pharmaceutical preparations. As a complexometric indicator, it is useful in the determination of hardness of water.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
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 diphenhydramine hydrochloride in pharmaceutical preparations. As a complexometric indicator, it is useful in the determination of hardness of water.

Solubility
Soluble in water. Slightly soluble in alcohol and acetone.

Notes
Incompatible with strong oxidizing agents and strong reducing agents.

Specifications

Chemical Identifiers

• CAS: 1787-61-7
• Molecular Formula: C20H12N3NaO7S
• Molecular Weight (g/mol): 461.38
• MDL Number: MFCD00003935
• InChI Key: JHUJLRKQZAPSDP-GXTSIBQPSA-M
• Synonym: C.I. 14645; Mordant Black 11
• PubChem CID: 87355429
• SMILES: [Na+].OC1=C2C=CC=CC2=CC=C1N\N=C1/C(=O)C=C(C2=CC(=CC=C12)[N+]([O-])=O)S([O-])(=O)=O

• Beilstein: 4121162
• Merck Index: 14,3667
• Solubility Information: Soluble in water. Slightly soluble in alcohol and acetone.
• IUPAC Name: (4Z)-4-[(1-hydroxynaphthalen-2-yl)hydrazinylidene]-7-nitro-3-oxonaphthalene-1-sulfonic acid;sodium
• Formula Weight: 461.39
• Quantity: 100 g
• Chemical Name or Material: Eriochrome Black T

Safety and Handling

Hazard Category	H319-H336-H500
Hazard Statement	GHS H Statement H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statement	P261-P264b-P271-P280i-P304+P340-P305+P351+P338-P312-P501c
EINECSNumber	217-250-3
RTECSNumber	QK2197000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only