Trimyristin
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Names | |
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IUPAC name
1,3-Di(tetradecanoyloxy)propan-2-yl tetradecanoate
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Other names | |
Identifiers | |
555-45-3 ![]() |
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ChemSpider | 10675 ![]() |
EC Number | 209-099-7 |
Jmol 3D model | Interactive image |
PubChem | 11148 |
UNII | 18L31PSR28 ![]() |
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Properties | |
C45H86O6 | |
Molar mass | 723.18 g·mol−1 |
Appearance | White-yellowish gray solid |
Odor | Nutmeg-like |
Density | 0.862 g/cm3 (20 °C)[4] 0.8848 g/cm3 (60 °C)[2] |
Melting point | 56–57 °C (133–135 °F; 329–330 K) at 760 mmHg[2] [4][5] |
Boiling point | 311 °C (592 °F; 584 K) at 760 mmHg[2] |
Solubility | Slighty soluble in alcohol, ligroin Soluble in (C2H5)2O, acetone, C6H6,[2] CH2Cl2, CHCl3 |
Refractive index (nD)
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1.4428 (60 °C)[2] |
Structure | |
Triclinic (β-form)[3] | |
P1 (β-form)[3] | |
a = 12.0626 Å, b = 41.714 Å, c = 5.4588 Å (β-form)[3]
α = 73.888°, β = 100.408°, γ = 118.274°
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Thermochemistry | |
1013.6 J/mol·K (β-form, 261.9 K) 1555.2 J/mol·K (331.5 K)[5][6] |
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Std molar
entropy (S |
1246 J/mol·K (liquid)[6] |
Std enthalpy of
formation (ΔfH |
−2355 kJ/mol[6] |
Std enthalpy of
combustion (ΔcH |
27643.7 kJ/mol[6] |
Vapor pressure | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references | |
Trimyristin is an ester with the chemical formula C45H86O6. It is a saturated fat which is the triglyceride of myristic acid. Trimyristin is a white to yellowish-gray solid that is insoluble in water, but soluble in ethanol, benzene, chloroform, dichloromethane, and ether.
Occurrence
Trimyristin is found naturally in many vegetable fats and oils.
Isolation from nutmeg
The isolation of trimyristin from powdered nutmeg is a common introductory-level college organic chemistry experiment. It is an uncommonly simple natural product extraction because nutmeg oil generally consists of over eighty percent trimyristin. Trimyristin makes up between 20-25% of the overall mass of dried, ground nutmeg. Separation is generally carried out by steam distillation and purification uses extraction from ether followed by distillation or rotary evaporation to remove the volatile solvent. The extraction of trimyristin can also be done with diethyl ether at room temperature, due to its high solubility in the ether. The experiment is frequently included in curricula, both for its relative ease and to provide instruction in these techniques.
See also
References
- ↑ Merck Index, 11th Edition, 9638.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 6.3 Trimyristin in Linstrom, P.J.; Mallard, W.G. (eds.) NIST Chemistry WebBook, NIST Standard Reference Database Number 69. National Institute of Standards and Technology, Gaithersburg MD. http://webbook.nist.gov (retrieved 2014-06-19)
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