Flavoxone
Structural formula
| Business number | 051A |
|---|---|
| Molecular formula | C28H12N2O2 |
| Molecular weight | 408.41 |
| label |
Restore yellow G, Shilin Huang G, Restore yellow 1, flavonoids, Restore yellow 5RC, Pigment Yellow 24 |
Numbering system
CAS number:475-71-8
MDL number:None
EINECS number:207-498-0
RTECS number:None
BRN number:None
PubChem ID:None
Physical property data
1. Properties: orange-yellow powder
2. Density (g/ m3, 25/4℃): Undetermined
3. Relative vapor density (g/cm3, air=1): Not determined
4. Melting point (ºC): Not determined
5. Boiling point ( ºC, normal pressure): Undetermined
6. Boiling point (ºC, 5.2kPa): Undetermined
7. Refractive index: Undetermined
8. Flash point (ºC): Undetermined
9. Specific rotation (º): Undetermined
10. Autoignition point or ignition temperature (ºC): Undetermined
11. Vapor pressure (kPa, 25ºC): Undetermined
12. Saturated vapor pressure (kPa, 60ºC): Undetermined
13. Heat of combustion (KJ/ mol): Undetermined
14. Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
16. Oil and water ( Log value of the partition coefficient (octanol/water): Undetermined
17. Explosion upper limit (%, V/V): Undetermined
18. Explosion lower limit (%, V/ V): Undetermined
19. Solubility: Insoluble in acetone, ethanol, chloroform and toluene, slightly soluble in o-chlorophenol and pyridine, soluble in hot nitrobenzene.
Toxicological data
None
Ecological data
This substance may be harmful to the environment, and special attention should be paid to water bodies.
Molecular structure data
1. Molar refractive index: 123.99
2. Molar volume (cm3/mol): 259.2
3. Isotonic specific volume (90.2K ): 811.2
4. Surface tension (dyne/cm): 95.9
5. Polarizability (10-24cm3): 49.15
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): 5.4
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond acceptors: 4
4. Number of rotatable chemical bonds: 0
5.Number of tautomers: None
6. Topological molecule polar surface area 59.9
7. Number of heavy atoms: 32
8. Surface charge: 0
9. Complexity: 773
10. Number of isotope atoms: 0
11. Determine the number of atomic stereocenters: 0
12. Uncertain number of atomic stereocenters: 0
13. Determined number of chemical bond stereocenters: 0
14. Uncertain number of chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
Use and store according to specifications. It will not decompose and avoid contact with oxides.
It appears blue in alkaline insurance powder reducing solution and green in acidic reducing solution. It is dark orange in concentrated sulfuric acid and yellow precipitate after dilution. It is a weak and brittle cloth type that is difficult to oxidize and will discolor after soaping.
Storage method
Keep it sealed and placed in a ventilated and dry place to avoid contact with other oxides. Sun protection, heat protection and moisture protection.
Synthesis method
Use 1-chloro-2-acetylaminoanthraquinone as raw material, in DMF medium, use copper powder as catalyst to complete the dechlorination and condensation reaction. After copper removal, in concentrated The product is obtained by hydrolysis and ring closing in the presence of sulfuric acid.
Purpose
1. Mainly used for dyeing and printing of cotton, V-C, V/C, polyester/COTTON. It has good affinity for cotton fibers and good level dyeing properties. Since it is difficult to oxidize, it can be oxidized with hydrogen peroxide or sodium perborate to obtain bright and bright colors. Also used in the manufacture of organic pigments.
2. This product is a substitute for restoring golden GOK. It can be used for jig dyeing, suspension pad dyeing and cotton yarn dyeing on cotton cloth. . It can be used for direct printing and discharge printing, and can also be used for green spelling.