U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry ACHIRAL
Molecular Formula C20H12N3O7S.Na
Molecular Weight 461.38
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 1
Charge 0

SHOW SMILES / InChI
Structure of Eriochrome Black A

SMILES

[Na+].OC1=CC=C2C=CC=CC2=C1\N=N\C3=C4C=CC(=CC4=C(C=C3O)S([O-])(=O)=O)[N+]([O-])=O

InChI

InChIKey=DXRWYIKGBIPGAG-QUABFQRHSA-M
InChI=1S/C20H13N3O7S.Na/c24-16-8-5-11-3-1-2-4-13(11)19(16)21-22-20-14-7-6-12(23(26)27)9-15(14)18(10-17(20)25)31(28,29)30;/h1-10,24-25H,(H,28,29,30);/q;+1/p-1/b22-21+;

HIDE SMILES / InChI

Approval Year

Name Type Language
NSC-73413
Preferred Name English
Eriochrome Black A
Common Name English
C.I. 15710
Common Name English
Acid Chrome Black N
Common Name English
Sodium 3-hydroxy-4-((2-hydroxynaphthalen-1-yl)diazenyl)-7-nitronaphthalene-1-sulfonate
Systematic Name English
C.I. Mordant Black 1
Common Name English
Acid Chrome Black S
Common Name English
1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro-, sodium salt (1:1)
Common Name English
Solochrome Black AS
Common Name English
1-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-, monosodium salt
Common Name English
Code System Code Type Description
CAS
3618-58-4
Created by admin on Wed Apr 02 11:28:09 GMT 2025 , Edited by admin on Wed Apr 02 11:28:09 GMT 2025
PRIMARY
EPA CompTox
DTXSID00883996
Created by admin on Wed Apr 02 11:28:09 GMT 2025 , Edited by admin on Wed Apr 02 11:28:09 GMT 2025
PRIMARY
FDA UNII
RZR3KN57TW
Created by admin on Wed Apr 02 11:28:09 GMT 2025 , Edited by admin on Wed Apr 02 11:28:09 GMT 2025
PRIMARY
ECHA (EC/EINECS)
222-807-9
Created by admin on Wed Apr 02 11:28:09 GMT 2025 , Edited by admin on Wed Apr 02 11:28:09 GMT 2025
PRIMARY
NSC
73413
Created by admin on Wed Apr 02 11:28:09 GMT 2025 , Edited by admin on Wed Apr 02 11:28:09 GMT 2025
PRIMARY