Triethyl citric acid

Structural formula
General
Surname	Triethyl citric acid
other names	Triethyl citrate; Triethyl citrate; Triethyl 2-hydroxypropane-1,2,3-tricarboxylate;
Molecular formula	C 12 H 20 O 7
Brief description	colorless, oily liquid with a pleasant ester-like odor
External identifiers / databases
EC number	201-070-7
ECHA InfoCard	100,000,974
PubChem	6506
Wikidata	Q418057
properties
Molar mass	276.29 g mol −1
Physical state	liquid
density	1.135 g cm −3 (25 ° C)
Melting point	−55 ° C
boiling point	294 ° C
Vapor pressure	0.0025 hPa (25 ° C)); 1.3 hPa (107 ° C);
solubility	poor in water (65 g l −1 at 25 ° C); miscible with ethanol and diethyl ether ;
Refractive index	1.4455 (20 ° C)
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	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

Citric acid triethyl ester is the ester that results from the esterification of ethanol with citric acid .

properties

The ester is a colorless liquid that boils at 294 ° C under normal pressure. The vapor pressure function results according to Antoine according to log ₁₀ (P) = A− (B / (T + C)) (P in kPa, T in K) with A = 3.88263, B = 1743.204 and C = −122.435 in the temperature range from 380 K to 567 K. Citric acid triethyl ester forms flammable vapor-air mixtures above the flash point. The compound has a flash point of 150 ° C.

use

Conventional plasticizers based on phthalic acid esters have fallen into disrepute because of their health and environmental aspects. Citric acid esters such as triethyl citrate can be used as a non-toxic alternative. It is used as an artificial carrier and stabilizer in foods, deodorants, polymers and pesticides.

It is approved in the EU as a food additive with the designation E 1505 exclusively for flavors and egg white powder.

Individual evidence

↑ ^a ^b entry on triethyl citrate. In: Römpp Online . Georg Thieme Verlag, accessed on June 20, 2014.
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry for CAS no. 77-93-0 in the GESTIS substance database of the IFA , accessed on November 9, 2017 (JavaScript required)
↑ 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. 3-498.
↑ Stull, DR: Vapor Pressure of Pure Substances - Organic Compounds in Ind. Eng. Chem., 1947, 39, 517-540. doi : 10.1021 / ie50448a022
↑ Citrate-based plasticizers in CHEManager 15-16 / 2009, p. 9.
↑ www.zusatzstoffe-online.de

[roempp-1] try on triethyl citrate. In: Römpp Online . Georg Thieme Verlag, accessed on June 20, 2014.

[GESTIS-2] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry for CAS no. 77-93-0 in the GESTIS substance database of the IFA , accessed on November 9, 2017 (JavaScript required)

[CRC90_3_498-3] 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. 3-498.

[4] Stull, DR: Vapor Pressure of Pure Substances - Organic Compounds in Ind. Eng. Chem., 1947, 39, 517-540. doi : 10.1021 / ie50448a022

[5] Citrate-based plasticizers in CHEManager 15-16 / 2009, p. 9.

[6] www.zusatzstoffe-online.de