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Myristic acid

Myristic acid (IUPAC systematic name: 1-tetradecanoic acid) is a common saturated fatty acid with the molecular formula CH3(CH2)12COOH. Its salts and esters are commonly referred to as myristates. It is named after the binomial name for nutmeg (Myristica fragrans), from which it was first isolated in 1841 by Lyon Playfair.

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Further Information

Names

IUPAC nameTetradecanoic acid

Other names

C14:0 ()

Identifiers

CAS Number: 544-63-8

JSmol: Interactive image

ChEBI: CHEBI:28875

ChEMBL: ChEMBL111077

ChemSpider: 10539

ECHA InfoCard: 100.008.069

EC Number: 208-875-2

IUPHAR/BPS: 2806

PubChem: 11005

RTECS number: QH4375000

UNII: 0I3V7S25AW

Properties

Chemical formula: C14H28O2

Molar mass: 228.38 g·mol

Density: 1.03 g/cm (−3 °C)
0.99 g/cm (24 °C)
0.8622 g/cm (54 °C)333

Melting point: 54.4 °C (129.9 °F; 327.5 K)

Boiling point: 326.2 °C (619.2 °F; 599.3 K) at 760 mmHg
250 °C (482 °F; 523 K)
at 100 mmHg
218.3 °C (424.9 °F; 491.4 K)
at 32 mmHg

Solubility in water: 13 mg/L (0 °C)
20 mg/L (20 °C)
24 mg/L (30 °C)
33 mg/L (60 °C)

Solubility: alcohol

Solubility: 2.75 g/100 g (0 °C)
15.9 g/100 g (20 °C)
42.5 g/100 g (30 °C)
149 g/100 g (40 °C)

Solubility: 6.95 g/100 g (10 °C)
29.2 g/100 g (20 °C)
87.4 g/100 g (30 °C)
1.29 kg/100 g (50 °C)

Solubility: 2.8 g/100 g (0 °C)
17.3 g/100 g (20 °C)
75 g/100 g (30 °C)
2.67 kg/100 g (50 °C)

Solubility: 3.4 g/100 g (0 °C)
15.3 g/100 g (20 °C)
44.7 g/100 g (30 °C)
1.35 kg/100 g (40 °C)

Solubility: 0.6 g/100 g (−10 °C)
3.2 g/100 g (0 °C)
30.4 g/100 g (20 °C)
1.35 kg/100 g (50 °C)

log : 6.1

Vapor pressure: 0.01 kPa (118 °C)
0.27 kPa (160 °C)
1 kPa (186 °C)

Magnetic susceptibility: -176·10 cm/mol−63

Thermal conductivity: 0.159 W/m·K (70 °C)
0.151 W/m·K (100 °C)
0.138 W/m·K (160 °C)

Refractive index: 1.4723 (70 °C)

Viscosity: 7.2161 cP (60 °C)
3.2173 cP (100 °C)
0.8525 cP (200 °C)
0.3164 cP (300 °C)

Structure

Crystal structure: Monoclinic

Space group: P2/c1

Lattice constant: = 31.559 Å, = 4.9652 Å, = 9.426 Å

Thermochemistry

Specific
heat capacity: 432.01 J/mol·K

Std enthalpy of
formation: −833.5 kJ/mol

Std enthalpy of
combustion: 8675.9 kJ/mol

Hazards

GHS pictograms:

GHS signal word: Warning

GHS hazard statements: H315

NFPA 704:

Flash point: > 110 °C (230 °F; 383 K)

median dose: >10 g/kg (rats, oral)

Related compounds

Related compounds: Tridecanoic acid

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).

Infobox references