Acetaldehyde diethyl acetal

Structural formula
General
Surname	Acetaldehyde diethyl acetal
other names	1,1-diethoxyethane; Diethylacetal; Acetal;
Molecular formula	C 6 H 14 O 2
Brief description	colorless liquid with a fruity odor
External identifiers / databases
EC number	203-310-6
ECHA InfoCard	100.003.010
PubChem	7765
Wikidata	Q410938
properties
Molar mass	118.18 g · mol -1
Physical state	liquid
density	0.83 g cm −3
Melting point	−100 ° C
boiling point	102 ° C
solubility	soluble in water (46 g l −1 at 25 ° C)
Refractive index	1.3834 (20 ° C)
safety instructions
H and P phrases	H: 225-319-315
	P: 210-233-302 + 352-305 + 351 + 338-403 + 235
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Acetaldehyde diethyl acetal (also simply acetal ) is a chemical compound with the empirical formula C ₆ H ₁₄ O ₂ . The colorless, pleasantly smelling liquid is not very soluble in water , but easily soluble in organic solvents. While like all acetals it is sensitive to acids , it remains stable to alkalis . Other names are 1,1-diethoxyethane and diethylacetal.

synthesis

Acetaldehyde diethyl acetal is obtained from acetaldehyde and ethanol by introducing the acetaldehyde into an ethanolic solution of anhydrous calcium chloride . After the mixture has been left to stand for one day at room temperature , the acetaldehyde diethyl acetal formed in the upper phase is separated off.

properties

Molar heat of combustion = -3870 kJ / mol

use

Acetaldehyde diethyl acetal is primarily a solvent , but it can also be used preparatively as a protected acetaldehyde or as a fuel additive to adjust the octane number .

safety instructions

Acetaldehyde diethyl acetal is highly flammable and has a narcotic effect .

Individual evidence

↑ ^a ^b ^c ^d ^e data sheet acetaldehyde diethylacetal (PDF) from Merck , accessed on January 19, 2011.
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-164.
↑ ^a ^b Entry on 1,1-diethoxyethane in the GESTIS substance database of the IFA , accessed on February 14, 2017(JavaScript required) .
↑ Entry on 1,1-diethoxyethane in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[Merck-1] ↑ ^a ^b ^c ^d ^e data sheet acetaldehyde diethylacetal (PDF) from Merck , accessed on January 19, 2011.

[CRC90_3_164-2] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-164.

[GESTIS-3] Entry on 1,1-diethoxyethane in the GESTIS substance database of the IFA , accessed on February 14, 2017(JavaScript required) .

[CLP_100.003.010-4] Entry on 1,1-diethoxyethane in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .