Structural Formula Vector Image
Title: Tristearin
CAS Registry Number: 555-43-1
CAS Name: Octadecanoic acid 1,2,3-propanetriyl ester
Additional Names: stearin; glyceryl tristearate
Molecular Formula: C57H110O6
Molecular Weight: 891.48
Percent Composition: C 76.79%, H 12.44%, O 10.77%
Literature References: Present in many animal and vegetable fats, especially the hard ones like cacao butter and tallow. Prepd from stearic acid and glycerol in the presence of Al2O3: Ingram, GB 663566 (1951 to I.C.I.); by catalytic hydrogenation of many oils: Bailey's Industrial Oil and Fat Products (Wiley, New York, 3rd ed., 1964) pp 881-882.
Properties: White powder; d480 0.862; mp ~55°; on further heating solidifies and melts again at 72°. nD80 1.4385. Insol in water. Sol in benzene, chloroform, hot alcohol; almost insol in cold alcohol, ether, petr ether.
Melting point: mp ~55°; on further heating solidifies and melts again at 72°
Index of refraction: nD80 1.4385
Density: d480 0.862
Use: In textile sizes. Formerly in making candles.

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