Rhodamine B alkaline

Structural formula

Business number	05A9
Molecular formula	C28H30N2O3
Molecular weight	442.56
label	Solvent Red 49

• Numbering system
• Physical property data
• Toxicological data
• Ecological data
• Molecular structure data
• Computing chemical data
• More
  • Properties and Stability
  • Storage method
  • Synthesis method
  • Purpose

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.