Methyl palmitate Methyl palmitate
Structural formula
| Business number | 035M |
|---|---|
| Molecular formula | C17H34O2 |
| Molecular weight | 270.45 |
| label |
Methyl hexadecanoate, Methyl palmitate, Methyl hexadecanoate, Methyl hexadecanoate, Methyl n-hexadecanoate, n-Hexadecanoic acid methyl ester, Lipoids |
Numbering system
CAS number:112-39-0
MDL number:MFCD00008994
EINECS number:203-966-3
RTECS number:None
BRN number:1780973
PubChem number:24898607
Physical property data
1. Properties: colorless liquid
2. Density (g/mL, 25℃): 0.8247
3. Relative density (25℃, 4℃): 0.8354 60
4. Melting point (ºC): 30~34
5. Boiling point (ºC): 417, 163~164 (533.2pa)
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6. Relative density (20℃, 4℃): 0.8804
7. Refractive index at room temperature (n25): 1.4512
8. Flash point (ºC): >110
9. Refractive index at room temperature (n20): 1.4512
10. Autoignition point or ignition temperature (ºC): Undetermined
11. Vapor pressure (mmHg, 70ºC): Undetermined
12. Saturated vapor pressure (kPa, ºC): Undetermined
13. Heat of combustion (KJ/mol): Undetermined
14. Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
p>
16. The logarithmic value of the oil-water (octanol/water) partition coefficient: Undetermined
17. The upper limit of explosion (%, V/V): Undetermined
18. Lower explosion limit (%, V/V): Undetermined
19. Solubility: Insoluble in water, soluble in ethanol, ether, benzene, etc.
Toxicological data
None yet
Ecological data
No harm to water bodies.
Molecular structure data
1. Molar refractive index: 82.58
2. Molar volume (cm3/mol): 312.6
3. Isotonic specific volume (90.2K ): 733.2
4. Surface tension (dyne/cm): 30.2
5. Polarizability (10-24cm3): 32.73
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): None
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond acceptors: 2
4. Number of rotatable chemical bonds: 15
5. Number of tautomers: none
6. Topological molecule polar surface area 26.3
7. Number of heavy atoms: 19
8. Surface charge: 0
9. Complexity: 190
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 Number: 0
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
1. Avoid contact with strong oxides.
2. Found in flue-cured tobacco leaves, burley tobacco leaves, and oriental tobacco leaves.
Storage method
Stored sealed in a cool, dry place. Make sure the workspace has good ventilation. Keep away from sources of fire. Store away from oxidizing agents. Storage temperature 2~8ºC
Synthesis method
1. Using refined edible palm oil as raw material, palmitic acid is obtained through acidification hydrolysis, vacuum distillation, and freezing crystallization. Then palmitic acid and methanol are esterified in the presence of catalyst sodium methoxide to obtain methyl palmitate.
2. Tobacco: OR, 57; BU, 14; FC, 9, 18, 40; BU, OR, 18.
Purpose
Used to produce fatty alcohols, ester homologues, alkanolamides, sulfo fatty acid methyl esters, sugar esters and other derivatives.