Acid orange 20

C16H11N2NaO4SCAS 523-44-4350.32 g/mol

O−SOONNOHNa+
AzoPhenolSulfonic acid

Properties

Molecular formula
C16H11N2NaO4S
Molar mass
350.32 g/mol
Exact mass
350.0337 Da
Melting point
260 °C (decomposes)
logP
3.83Crippen estimate
Polar surface area
99.3 Ų
H-bond donors / acceptors
2 / 5
Rotatable bonds
3

Hazards

No GHS classification is on file for this compound. That is not evidence that it is harmless.

Identifiers

CAS number
523-44-4
SMILES
[O-]S(=O)(=O)c1ccc(N=Nc2ccc(O)c3ccccc23)cc1.[Na+]
InChIKey
AZLXCBPKSXFMET-UHFFFAOYSA-M
InChI
InChI=1S/C16H12N2O4S.Na/c19-16-10-9-15(13-3-1-2-4-14(13)16)18-17-11-5-7-12(8-6-11)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1

Weigh it out

Type any one amount. The others follow from the molar mass.

Names and synonyms

38 names · show all
  • Benzenesulfonic acid, 4-[2-(4-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1)
  • C.I. Acid Orange 20, monosodium salt
  • Benzenesulfonic acid, 4-[(4-hydroxy-1-naphthalenyl)azo]-, monosodium salt
  • C.I. Acid orange 20
  • C.I. 14600
  • Acid leather orange I
  • Acid orange I
  • Aizen orange I
  • Certiqual orange I
  • Dye orange No. 1
  • Eniacid orange I
  • Ext D and C orange no. 3
  • Hispacid orange 1
  • Java orange I
  • Naphthalene orange I
  • Neklacid orange 1
  • Orange I
  • 1333 Orange
  • Orange I extra conc. A export
  • Orange IM
  • A.F. Orange no. 1
  • 4-p-Sulfophenylazo-1-naphthol monosodium salt
  • Tertracid orange I
  • α-Naphthol orange
  • External D and C orange number 3
  • FD and C orange no. 1
  • Orange 1 sodium salt
  • Tropaeolin 1
  • Naphthol orange
  • Tropaeolin OOO 1
  • Yellow 404
  • Japan orange 402
  • Japan orange no. 402
  • Japan orange 1
  • FD and C Orange 1
  • Ext D & C orange 3
  • Orange 402
  • Orange no. 402

Work with Acid orange 20

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue.

Same formula

Elsewhere