Name | flavianic acid hydrate |
Synonyms | FLAVIANIC ACID flavianic acid hydrate LABOTEST-BB LT00452838 Flavianic acid dihydrate 2,4-dinitronaphtholsulfonicacid 2,4-Dinitronaphtholsulfonic acid 2,4-Dinitro-1-Napthol-7-Sulfonic Acid 2,4-DINITRO-1-NAPHTHOL-7-SULFONIC ACID 2-4-Dinitro-1-naphthol-7-sulfonic acid 8-HYDROXY-5,7-DINITRO-2-NAPHTHALENESULFONIC ACID 8-hydroxy-5,7-dinitronaphthalene-2-sulfonic acid 8-HYDROXY-5,7-DINITRO-NAPHTHALENE-2-SULFONIC ACID 8-hydroxy-5,7-dinitronaphthalene-2-sulphonic acid |
CAS | 483-84-1 |
EINECS | 207-600-3 |
InChI | InChI=1/C10H6N2O8S/c13-10-7-3-5(21(18,19)20)1-2-6(7)8(11(14)15)4-9(10)12(16)17/h1-4,13H,(H,18,19,20) |
Molecular Formula | C10H6N2O8S |
Molar Mass | 314.23 |
Density | 1.7763 (rough estimate) |
Melting Point | 148-151°C(lit.) |
Appearance | powder to crystal |
Color | Light yellow to Yellow |
pKa | -0.38±0.40(Predicted) |
Storage Condition | 2-8°C |
Refractive Index | 1.7450 (estimate) |
MDL | MFCD00046407 |
Physical and Chemical Properties | Light yellow needle-like crystals. Melting Point 151 °c (anhydrous). Soluble in water and alcohol. |
Hazard Symbols | C - Corrosive |
Risk Codes | R34 - Causes burns R40 - Limited evidence of a carcinogenic effect |
Safety Description | S22 - Do not breathe dust. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
UN IDs | UN 1759 8/PG 3 |
WGK Germany | 3 |
RTECS | QK1810000 |
Hazard Class | 8 |
Packing Group | III |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | used as organic synthesis intermediate, organic alkali precipitant, amino acid reagent. This product can interact with more than 50 metal ions, but only precipitate with zirconium and lead in acidic solution. It has the advantages of strong selectivity and high sensitivity for the determination of zirconium. |
production method | is obtained by sulfonation and nitration of α-naphthol. 200g of 25% fuming sulfuric acid was slowly added into 50g of α-naphthol, stirred and dissolved, and reacted at 125 ℃ for 1h. After the reaction is completed, cool, mix with 500g of crushed ice, and filter. 120g of concentrated nitric acid with a relative density of 1.40 was added to the filtrate and heated at 50 ℃ for 1.5h. The reactants are placed at room temperature for 12h, filtered, recrystallized with dilute hydrochloric acid, and dried to obtain the finished product. |