Other grades of this product :
| 3-Hydroxy-2-naphthoic acid Basic information |
| 3-Hydroxy-2-naphthoic acid Chemical Properties |
| Melting point | 218-221 °C(lit.) | | Boiling point | 283.17°C (rough estimate) | | density | 1.43 g/cm3 (23℃) | | refractive index | 1.7160 (estimate) | | Fp | >150°C | | storage temp. | Sealed in dry,Room Temperature | | solubility | 0.072g/l practically insoluble | | pka | 3.02±0.30(Predicted) | | form | Fine Crystalline Powder | | color | Yellow to beige-brown | | Water Solubility | PRACTICALLY INSOLUBLE | | λmax | 395nm(H2O (pH 3.5))(lit.) | | Merck | 14,4835 | | BRN | 744100 | | CAS DataBase Reference | 92-70-6(CAS DataBase Reference) | | NIST Chemistry Reference | 2-Naphthalenecarboxylic acid, 3-hydroxy-(92-70-6) | | EPA Substance Registry System | 3-Hydroxy-2-naphthoic acid (92-70-6) |
| 3-Hydroxy-2-naphthoic acid Usage And Synthesis |
| Chemical Properties | yellow to beige-brown fine crystalline powder | | Uses | 3-Hydroxy-2-naphthoic acid is mainly used as intermediate for the production of dyes and pigments. Further uses are as intermediate for insecticides and pharmaceuticals (ECB, 2000). | | Uses | 2-hydroxy-3-naphthoic acid (BON) is coupled with diazo compounds
and their calcium salts are bright red bleed resistance pigments. The somewhat higher cost manganese salt shows better exterior
durability than the calcium or barium salts. The BON red pigments are
characterized by an extremely high degree of color stability, resistance
to acids and alkalies and are nontoxic. | | Hazard | Irritant. | | Purification Methods | Crystallise it from water or acetic acid. The S-benzyisothiuronium salt has m 216-217o (from EtOH). It forms many metal complex salts. [Beilstein 10 H 333, 10 III 1084.] |
| 3-Hydroxy-2-naphthoic acid Preparation Products And Raw materials |
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