Palmitin

Tripalmitin
Names

IUPAC name 1,2,3-Propanetriyl trihexadecanoate
Other names Palmitin; Glycerol tripalmitate; Glycerin tripalmitate; Glyceryl tripalmitate; Palmitic triglyceride; Tripalmitoyl glycerol
Identifiers
CAS Number	555-44-2
3D model (Jmol)	Interactive image
ChemSpider	10674
ECHA InfoCard	100.008.272
EC Number	209-098-1
PubChem CID	11147
RTECS number	RT4953500
InChI InChI=1S/C51H98O6/c1-4-7-10-13-16-19-22-25-28-31-34-37-40-43-49(52)55-46-48(57-51(54)45-42-39-36-33-30-27-24-21-18-15-12-9-6-3)47-56-50(53)44-41-38-35-32-29-26-23-20-17-14-11-8-5-2/h48H,4-47H2,1-3H3 Key: PVNIQBQSYATKKL-UHFFFAOYSA-N InChI=1/C51H98O6/c1-4-7-10-13-16-19-22-25-28-31-34-37-40-43-49(52)55-46-48(57-51(54)45-42-39-36-33-30-27-24-21-18-15-12-9-6-3)47-56-50(53)44-41-38-35-32-29-26-23-20-17-14-11-8-5-2/h48H,4-47H2,1-3H3 Key: PVNIQBQSYATKKL-UHFFFAOYAV
SMILES O=C(OCC(OC(=O)CCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCC)CCCCCCCCCCCCCCC
Properties
Chemical formula	C₅₁H₉₈O₆
Molar mass	807.34 g·mol⁻¹
Appearance	White powder
Density	0.8752 g/cm³ (70 °C)
Melting point	44.7–67.4 °C (112.5–153.3 °F; 317.8–340.5 K)
Boiling point	315 °C (599 °F; 588 K) at 760 mmHg
Solubility in water	Insoluble
Solubility	Soluble in EtOH, (C₂H₅)₂O, C₆H₆, CHCl₃
Refractive index (n_D)	1.4381 (80 °C)
Structure
Crystal structure	Triclinic (β-form)
Space group	P1 (β-form)
Thermochemistry
Specific heat capacity (C)	1219.4 J/mol·K (β-form, 281.2 K) 1753.1 J/mol·K (338.8 K)
Std molar entropy (S^o₂₉₈)	1387.4 J/mol·K (liquid)
Std enthalpy of formation (Δ_fH^o₂₉₈)	−2468.7 kJ/mol
Std enthalpy of combustion (Δ_cH^o₂₉₈)	−31605.9 kJ/mol
Hazards
EU classification (DSD)	Xn
R-phrases	R20/22
NFPA 704	0 1 0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tripalmitin is a triglyceride derived from the fatty acid palmitic acid.

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