Title: Diacetin
CAS Registry Number: 25395-31-7
CAS Name: 1,2,3-Propanetriol diacetate
Synonyms: glycerol diacetate; glyceryl diacetate
Molecular Formula: C7H12O5
Molecular Weight: 176.17
Percent Composition: C 47.72%, H 6.87%, O 45.41%
Literature References: Commercial material is probably a mixture of glycerol 1,2- and 1,3-diacetates. Prepn of the 1,2- and 1,3-compounds: Wegscheider, Zmerzlikar,
Monatsh. Chem. 34, 1061 (1913); of the 1,2-compd: Golendeev,
J. Gen. Chem. USSR 6, 1841 (1936); of the 1,3-compd: Lagenbeck, Bollow,
Naturwissenschaften 42, 389 (1955).
Properties: Hygroscopic liquid, bp 259°. d416 1.184.
nD20 1.44. Sol in water, alc, ether, benzene; practically insol in CS2.
Boiling point: bp 259°
Index of refraction: nD20 1.44
Density: d416 1.184
Derivative Type: dl-1,2-Compd
Synonyms: 1,2-Diacetin
Properties: bp12 140-142°, bp40 172-173.5°. d415 1.1173.
Boiling point: bp12 140-142°; bp40 172-173.5°
Density: d415 1.1173
Derivative Type: 1,3-Compd
Synonyms: 1,3-Diacetin
Properties: bp40 172-174°. d15 1.179.
nD20 1.4395.
Boiling point: bp40 172-174°
Index of refraction: nD20 1.4395
Density: d15 1.179
Use: Technical grade as a plasticizer and softening agent, and as a solvent.
