Catalog Number
ACMA00017498
Product Name
Diethyl Phthalate (DEP)
Category
Plasticizers; Resin Additives
Description
Diethyl phthalate appears as a clear, colorless liquid without significant odor. More dense than water and insoluble in water. Hence sinks in water. Primary hazard is to the environment. Spread to the environment should be immediately stopped. Easily penetrates soil, contaminates groundwater and nearby waterways. Flash point 325°F. Severely irritates eyes and mildly irritates skin. Used in the manufacture of perfumes, plastics, mosquito repellents and many other products.;Liquid;COLOURLESS OILY LIQUID.;Colorless to water-white, oily liquid with a very slight, aromatic odor.;Colorless to water-white, oily liquid with a very slight, aromatic odor. [pesticide]
IUPAC Name
diethyl benzene-1,2-dicarboxylate
Molecular Weight
222.24g/mol
Molecular Formula
C6H4(COOC2H5)2;C12H14O4;C12H14O4
Canonical SMILES
CCOC(=O)C1=CC=CC=C1C(=O)OCC
InChI
InChI=1S/C12H14O4/c1-3-15-11(13)9-7-5-6-8-10(9)12(14)16-4-2/h5-8H,3-4H2,1-2H3
InChI Key
FLKPEMZONWLCSK-UHFFFAOYSA-N
Boiling Point
568 °F at 760 mm Hg (NTP, 1992);295.0 °C;295 °C;295 °C;563°F;563°F
Melting Point
27 °F (NTP, 1992);-40.5 °C;-40.5 °C;-67 - -44 °C;-41°F;-41°F
Flash Point
284 °F (NTP, 1992);322 °F (161 °C) (Open cup);117 °C c.c.;284°F;(oc) 322°F
Density
1.12 at 68 °F (USCG, 1999);1.120 at 25 °C/25 °C;Relative density (water = 1): 1.1;1.12;1.12
Solubility
less than 1 mg/mL at 66° F (NTP, 1992);0.00 M;Miscible with ethanol, ethyl ether. Soluble in acetone, benzene, carbon tetrachloride;MISCIBLE WITH VEGETABLE OILS;Miscible with alcohols, ketones, esters, aromatic hydrocarbons; partly miscible with aliphatic solvents;Miscible with many organic solvents;In water, 1,080 mg/L at 25 °C;Solubility in water at 25 °C: none;(77°F): 0.1%
Application
Diethyl phthalate (DEP) serves multiple purposes across various industries due to its versatility and chemical properties. It functions primarily as a plasticizer, enhancing the flexibility and durability of plastics by improving their pliability. This characteristic makes DEP particularly valuable in applications involving cellulose resins and other polymers. Moreover, DEP is used as a solvent and fixative in numerous products. In the field of perfumery, it stabilizes fragrance components, extending their longevity. DEP is also utilized in producing coatings and varnishes, where it acts as a solvent for cellulose acetate. Its role as an alcohol denaturant further showcases its functional diversity. Despite its beneficial applications, DEP's high volatility can limit its widespread use. However, its compatibility with various resins underscores its importance in manufacturing processes and the creation of consumer products like deodorants, perfumes, and insect repellents.
Color/Form
Colorless oily liquid;Colorless to water-white, oily liquid.
Covalently-Bonded Unit Count
1
EC Number
201-550-6;273-520-0
Exact Mass
222.089209g/mol
Heat of Vaporization
170 BTU/LB= 96 CAL/G= 4.0X10+5 J/KG
Log P
2.42 (LogP);log Kow = 2.47;2.47
MeSH Entry Terms
diethyl phthalate;phthalic acid diethyl ester
Monoisotopic Mass
222.089209g/mol
Odor
Practically odorless;Odorless;Very slight, aromatic odor.
Other Experimental
LIQUID-WATER INTERFACE TENSION: 16.27 DYNES/CM= 0.01627 N/M @ 20.5 °C;Wt/gal approx 9.31 lb at 20 °C;Density: 1.232 at 14 °C/4 °C. Index of refraction: 1.5049 at 14 °C/D;Conversion: 9.07 mg/cu m = 1 ppm;... Resistance to migration from polymers, low temperature flexibility ... compatibility with polar polymers and additives over a wide range of compositions. /Phthalate esters/;Phthalate esters would be expected to have UV maxima in the 230 nm and 270 nm regions. /Phthalate esters/;Henry's Law constant = 6.10X10-7 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 3.47X10-12 cu cm/molec-sec at 25 °C (est)
Refractive Index
Index of refraction: 1.5002 at 25 °C/D
Vapor Density
7.66 (NTP, 1992) (Relative to Air);Relative vapor density (air = 1): 7.7;7.66
Vapor Pressure
1 mm Hg at 227.8 °F ; 5 mm Hg at 285.3° F (NTP, 1992);0.00 mmHg;2.1X10-3 mm Hg at 25 °C;0.002 mmHg;(77°F): 0.002 mmHg
Viscosity
31.3 centistokes at 0 °C