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| | 2-Naphthylamine-5,7-disulfonic acid Basic information |
| | 2-Naphthylamine-5,7-disulfonic acid Chemical Properties |
| Boiling point | 568.34℃[at 101 325 Pa] | | density | 1.769±0.06 g/cm3(Predicted) | | vapor pressure | 0Pa at 25℃ | | storage temp. | 2-8°C, protect from light | | pka | -0.91±0.40(Predicted) | | Appearance | Brown to breen Solid | | Water Solubility | 229g/L at 15℃ | | InChI | InChI=1S/C10H9NO6S2/c11-7-1-2-9-6(3-7)4-8(18(12,13)14)5-10(9)19(15,16)17/h1-5H,11H2,(H,12,13,14)(H,15,16,17) | | InChIKey | KZCSUEYBKAPKNH-UHFFFAOYSA-N | | SMILES | C1(S(O)(=O)=O)=C2C(C=C(N)C=C2)=CC(S(O)(=O)=O)=C1 | | LogP | -1.85 | | CAS DataBase Reference | 118-33-2(CAS DataBase Reference) | | EPA Substance Registry System | 1,3-Naphthalenedisulfonic acid, 6-amino- (118-33-2) |
| RIDADR | 1759 | | TSCA | TSCA listed | | HazardClass | 8 | | PackingGroup | III | | Toxicity | rat,LD50,oral,2gm/kg (2000mg/kg),"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1059, 1986. |
| | 2-Naphthylamine-5,7-disulfonic acid Usage And Synthesis |
| Chemical Properties | White glossy long prismatic needle-like crystals, the crystals precipitated from water contain 5 molecules of crystal water. The solubility in water at 20°C is 23%. Its monosodium salt and monopotassium salt are commonly used in industry, both of which are soluble in water, and the salt solution has green fluorescence. | | Uses | 2-Naphthylamine-5,7-disulfonic acid is an intermediate for the preparation of J acid, bis-J acid, phenyl J acid and scarlet acid. | | Hazard | Skin - Rabbit 2 mg/24h severe; Eye - Rabbit 0.75 mg/24h severe | | Flammability and Explosibility | Not classified | | Synthesis | 2-Naphthylamine-5,7-disulfonic acid can be obtained by hydrolysis of 2-naphthylamine-1,5,7-trisulfonic acid. Add sulfuric acid, sodium sulfate and 2-naphthylamine-1,5,7-trisulfonic acid into water, keep warm at 110-120°C for 4 hours, cool and filter, and wash in sodium sulfate solution to obtain the product. |
| | 2-Naphthylamine-5,7-disulfonic acid Preparation Products And Raw materials |
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