| Identification | |
| Name: | Benzenesulfonic acid,4-[2-[4-(dimethylamino)phenyl]diazenyl]- |
| Synonyms: | Benzenesulfonicacid, 4-[[4-(dimethylamino)phenyl]azo]- (9CI); Benzenesulfonic acid, p-[[p-(dimethylamino)phenyl]azo]-(6CI,8CI); 4-(4-Dimethylaminophenylazo)benzenesulfonic acid;4-(4-Sulfophenylazo)-N,N-dimethylaniline; 4-(Dimethylamino)-4'-sulfoazobenzene;4-(Dimethylamino)azobenzene-4'-sulfonic acid;4'-Sulfo-N,N-dimethyl-4-aminoazobenzene; Methyl orange (acid form); NSC 9595;p-[[p-(Dimethylamino)phenyl]azo]benzenesulfonic acid |
| CAS: | 502-02-3 |
| EINECS: | 207-932-9 |
| Molecular Formula: | C14H15 N3 O3 S |
| Molecular Weight: | 305.3522 |
| InChI: | InChI=1/C14H15N3O3S/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)/b16-15+ |
| Molecular Structure: | ![(C14H15N3O3S) Benzenesulfonicacid, 4-[[4-(dimethylamino)phenyl]azo]- (9CI); Benzenesulfonic acid, p-[[p-(dimethyla...](https://img1.guidechem.com/chem/e/dict/41/502-02-3.jpg) |
| Properties | |
| Melting Point: | >300 deg C |
| Density: | 1.28g/cm3 |
| Refractive index: | 1.61 |
| Solubility: | SOL IN 500 PARTS WATER; MORE SOL IN HOT WATER PRACTICALLY INSOL IN ALC INSOL IN ETHER; SLIGHTLY SOL IN PYRIMIDINE 20 mg/ml in 2-methoxyethanol; 0.3 mg/ml in ethanol In water= 200 mg/l at 25 deg C |
| Color: | ORANGE-YELLOW POWDER OR CRYSTALLINE SCALES |
| Safety Data | |
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