Merck, 858390-100G, Eriochrome® Black T

Name: Eriochrome® Black T
Brand: Merck
SKU: 858390-100G

Size:100 g, Mordant Black 11, ACS reagent (indicator grade)

Available Catalog Numbers

858390-100G 858390-1KG 858390-500G

Catalog Number: 858390-100G

Pricing

Send an RFQ.

View RFQ List

Category

Microbiological Stains

Pack Size100 g

TagsClinical & Diagnostics Tissue Diagnostics Hematology Stains

CollectionsMerck Tissue Diagnostics – Universal Reagents for Histology & IHC Merck Cell Culture Supplements & Reagents: Complete Solutions for Research & Bioproduction Merck Roche Life Science Products for PCR, RT‑PCR & Nucleic Acid Purification

Description

General description
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.
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.
Application
Eriochrome® Black T has been used to determine the concentration of Ca²⁺ using complexometric titration method.
Legal Information
Eriochrome is a registered trademark of Huntsman Petrochemical, LLC

Specifications

General

EC Number	217-250-3
UNSPSC Code	12171500
NACRES	NA.47
PubChem Substance ID	24888460
MDL number	MFCD00003935
Colour Index Number	14645
Beilstein/REAXYS Number	4121162
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+;
InChI key	AMMWFYKTZVIRFN-QUABFQRHSA-M
SMILES string	[Na+].Oc1cc(c2cc(ccc2c1\N=N\c3ccc4ccccc4c3O)[N+]([O-])=O)S([O-])(=O)=O
grade	ACS reagent (indicator grade)
form	powder
clarity of soln	passes test
technique(s)	titration: suitable
λ<sub>max</sub>	503 nm
suitability	passes test for complexometric indicator
application(s)	diagnostic assay manufacturinghematologyhistology
storage temp.	room temp
Quality Level	200

Ordering

Notice

Unless otherwise stated, the minimum order amount is USD 1,000.
For orders below USD 1,000, an additional handling fee may apply, or we may arrange local delivery / local handover where available.
All quotations are subject to final confirmation, including product availability, lead time, batch information, shipping cost, and applicable export or handling requirements.
For quotation requests, please send an RFQ from website or contact:

[email protected]

Please send inquiries directly to us in the “To” field. Emails sent via BCC, mass mailing, or with unrelated recipients may be automatically filtered and will not be processed.