Product Name
Octadecanoic acid
Category
Fatty Acids and Ester Homologs
Description
Stearic acid is a white solid with a mild odor. Floats on water. (USCG, 1999);DryPowder; DryPowder, OtherSolid, Liquid; Liquid; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals; PelletsLargeCrystals, Liquid; PelletsLargeCrystals, WetSolid, OtherSolid; WetSolid, Liquid;Solid;Solid;WHITE CRYSTALS OR POWDER WITH CHARACTERISTIC ODOUR.;hard, white or faintly yellowish crystalline solid/tallow odour;White solid with a mild odor.
IUPAC Name
octadecanoic acid
Molecular Formula
C18H36O2
Canonical SMILES
CCCCCCCCCCCCCCCCCC(=O)O
InChI
InChI=1S/C18H36O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H,19,20)
InChI Key
QIQXTHQIDYTFRH-UHFFFAOYSA-N
Boiling Point
361 °C (lit.)
Melting Point
67-72 °C (lit.)
Flash Point
385 °F (NTP, 1992);113 °C (235 °F) - closed cup;385 °F (196 dec C) (closed cup);196 °C;385°F
Density
0.86 at 68 °F (USCG, 1999);0.9408 g/cu cm at 20 °C;Relative density (water = 1): 0.94-0.83;0.86
Solubility
1 to 10 mg/mL at 73° F (NTP, 1992);2.10e-06 M;0.000597 mg/mL at 25 °C;In water, 0.568 mg/L at 25 °C;In water, 0.597 mg/L at 25 °C;Insoluble in water;Slightly soluble in ethanol, benzene; soluble in acetone, chloroform, carbon disulfide;1 gram dissolves in 21 mL alcohol, 5 mL benzene, 2 mL chloroform, 26 mL acetone, 6 mL carbon tetrachloride, 3.4 mL carbon disulfide; also soluble in amyl acetate, toluene;Soluble in alcohol, ether, chloroform, carbon disulfide, carbon tetrachloride;0.000597 mg/mL;Solubility in water: none;practically insoluble in water; soluble in alcohol, ether, chloroform;1 g in 20 ml alcohol (in ethanol)
Fatty Acid
Octadecanoic
(Stearic)
Stability
Stable under recommended storage conditions.
