Rhodamine B alkaline
Structural formula
| Business number | 05A9 |
|---|---|
| Molecular formula | C28H30N2O3 |
| Molecular weight | 442.56 |
| label |
Solvent Red 49 |
Numbering system
CAS number:509-34-2
MDL number:MFCD00066967
EINECS number:208-096-8
RTECS number:None
BRN number:None
PubChem number:24854024
Physical property data
1. Character: Undetermined
2. Density (g/ cm3,25/4℃): Undetermined
3. Relative vapor density (g/cm3,Air=1 ): Undetermined
4. Melting point (ºC): Undetermined
5. Boiling point (ºC,Normal pressure): Undetermined
6. Boiling point (ºC,8kPa): Undetermined
7. Refractive index: Undetermined
8. Flash Point (ºF): Undetermined
9. Specific optical 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 (octanol/Log value of partition coefficient for water: undetermined
17. Explosion limit (%,V/V): Undetermined
18. Lower explosion limit (%,V/V): Undetermined
19. Solubility:Undetermined
Toxicological data
None yet
Ecological data
This substance may be harmful to the environment, and special attention should be paid to water bodies.
Molecular structure data
None yet
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): 5
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond acceptors: 4
4. Number of rotatable chemical bonds: 6
5. Number of tautomers: none
6. Topological molecule polar surface area 55.6
7. Number of heavy atoms: 33
8. Surface charge: 0
9. Complexity: 805
10. Number of isotope atoms: 0
11. Determine the number of atomic stereocenters: 0
12. Uncertain number of atomic stereocenters: 0
13. Determine the number of chemical bond stereocenters: 0
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
Soluble in water and ethanol, it appears blue-red with strong fluorescence, slightly soluble in acetone, and easily soluble in ethylene glycol ether. In In concentrated sulfuric acid, it appears yellowish-brown with strong green fluorescence. After dilution, it turns bright red, and then turns blue-red and orange. Its aqueous solution will produce a rose-red flocculent precipitate when sodium hydroxide is added and heated.
Storage method
Stored in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. Protect from direct sunlight. The packaging is sealed. They should be stored separately from acids and food chemicals, and avoid mixed storage. Suitable materials should be available in the storage area to contain spills.
Synthesis method
With 2-hydroxy-N,N-Diethylaniline and phthalic anhydride As raw materials, the two are condensed in the presence of sulfuric acid, and treated with alkali dissolution and acid dissolution to obtain the product. After filtering and drying, the finished product is obtained.
Purpose
Oil-soluble red BN Coloring with grease, candles, rubber, plastics and clear lacquers.