Methyl orange
CAS Registry Number®
547-58-0
CAS Name
Methyl orangeMolecular Formula
C14H15N3O3S.NaCite this Page
Methyl orange. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. http://commonchemistry.cas.org/detail?cas_rn=547-58-0 (retrieved ) (CAS RN: 547-58-0). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).Compound Properties
Melting Point (1)
>300 °CDensity (2)
1.468 g/cm³
Source(s)
- (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)
- (2) Piotrowski, Hugo L.; Archiwum Mineralogiczne, (1937), 13, 63-79, CAplus
Other Names and Identifiers
InChI
InChI=1S/C14H15N3O3S.Na/c1-17(2)13-7-3-11(4-8-13)15-16-12-5-9-14(10-6-12)21(18,19)20;/h3-10H,1-2H3,(H,18,19,20);
InChIKey
InChIKey=LOJHDGOZROMANL-UHFFFAOYSA-N
SMILES
N(=NC1=CC=C(N(C)C)C=C1)C2=CC=C(S(=O)(=O)O)C=C2.[Na]
Canonical SMILES
[Na].O=S(=O)(O)C1=CC=C(N=NC2=CC=C(C=C2)N(C)C)C=C1
Other Names for this Substance
- Benzenesulfonic acid, 4-[2-[4-(dimethylamino)phenyl]diazenyl]-, sodium salt (1:1)
- Orange III
- Benzenesulfonic acid, p-[[p-(dimethylamino)phenyl]azo]-, sodium salt
- Benzenesulfonic acid, 4-[[4-(dimethylamino)phenyl]azo]-, sodium salt
- C.I. 13025
Deleted or Replaced CAS Registry Numbers
1342-24-1, 66777-17-1, 1773488-61-1, 2734910-57-5
