Dimethylacetal

Title: Dimethylacetal
CAS Registry Number: 534-15-6
CAS Name: 1,1-Dimethoxyethane
Additional Names: acetaldehyde dimethyl acetal; ethylidene dimethyl ether
Molecular Formula: C4H10O2
Molecular Weight: 90.12
Percent Composition: C 53.31%, H 11.18%, O 35.51%
Line Formula: CH3CH(OCH3)2
Literature References: Prepn from acetaldehyde and methanol: Meadows, Darwent, Can. J. Chem. 30, 501 (1952); Frevel, Hedelund, US 2691684 (1954 to Dow). Toxicity study: H. F. Smyth et al., J. Ind. Hyg. Toxicol. 31, 60 (1949).
Properties: Liquid, bp 64.5°. d420 0.8516. nD20 1.3665. Miscible with water, alcohol, chloroform, ether. LD50 orally in rats: 6.5 g/kg; LC (in air) in rats: 16000 ppm (Smyth).
Boiling point: bp 64.5°
Index of refraction: nD20 1.3665
Density: d420 0.8516
Toxicity data: LD50 orally in rats: 6.5 g/kg; LC (in air) in rats: 16000 ppm (Smyth)
Use: As Mering's mixture which is 2 vol dimethylacetal and 1 vol chloroform.
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