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Eriochrome Black T ACS

Eriochrome Back T ACS Grade CAS: 1787-61-7 | M.F: C20H12N3NaO7S | MW: 461.38, Buy now for reliable and Reproducible results from ChemieR Organic Reagent at Chemical World.

Eriochrome black T ACS is a dark violet powder with green metallic sheen. It is a hydroxyl-arylazo dye and is generally supplied as a monosodium salt. Its molecular formula is C20H12N3NaO7S. Eriochrome Black T is soluble in water and alcohol, but insoluble in common organic solvents. It functions as an acid-base indicator. Eriochrome Black T ACS is also known as Solochrome Black T, Mordant Black 11, 3-Hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonic Acid Monosodium Salt. It turns red when it forms a complex with calcium, magnesium, or other metal ions. ACS grade Eriochrome black T is manufactured to meet the purity standards set by the American Chemical Society (ACS), ensuring high quality and consistency.

ChemieR offers a comprehensive range of ACS grade and ISO 9001:2015 certified products, including high-purity solvents, inorganic reagents, acids, bases, and organic reagents. Our high-quality materials ensure your laboratory achieves precise, reproducible results every time. Rely on ChemieR for trusted, premium-grade chemicals that meet the highest industry standards.

Application :

  • Eriochrome Black T ACS is used as an indicator for complexometric titrations.
  • It is used for the determination of calcium and magnesium by titration with EDTA.
  • It has also been used to detect the presence of rare earth metals.
  • It is mainly used as an indicator in ethylenediaminetetraacetic acid (EDTA) method to determine hardness of water.

Key features :

  • Meet the toughest regulatory standards for quality and purity.
  • Strong acid base indicator
  • Safe and easy to handle

Properties

Quality Level
200
Vapor Density
-
Vapor Pressure
-
Assay
-
Form
powder
autoignition temp.
-
expl. lim.
-
technique(s)
titration: suitable
impurities
-
color
-
transmittance
-
refractive index
-
pH
-
bp
-
mp
-
density
-
UV absorption
-
application(s)
diagnostic assay manufacturing, hematology, histology
SMILES string
[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+;
InChI key
AMMWFYKTZVIRFN-QUABFQRHSA-M
 

Safety Information

Pictograms
GHS07,GHS09
Signal Word
Warning
Hazard Statements
H319 - H411
Precautionary Statements
P264 - P273 - P280 - P305 + P351 + P338 - P337 + P313 - P391
Hazard Classifications
Aquatic Chronic 2 - Eye Irrit. 2
Target Organs
-
Storage Class Code
11 - Combustible Solids
WGK
WGK 2
Flash Point(F)
-
Flash Point(C)
-

Safety Data Sheets (SDS), Product Specification (PS) and Certificates of Analysis (COA) click Document Button