Product Name
Diethyl Phthalate, NF
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, NF serves as a versatile and essential component in various industrial and consumer applications. As a member of the phthalate group of esters, it is widely utilized for its effective solvent and plasticizing properties. DEP is predominantly used to enhance the flexibility of plastics and as a plasticizer in cellulose resin formulations, though its high volatility can limit broader usage. It is commonly applied as a plasticizer in film coatings for pharmaceuticals, aiding in coating tablets and other oral dosage forms, typically at concentrations ranging from 10-30% of the polymer weight. Beyond this, Diethyl Phthalate functions as a solvent for cellulose acetate in the production of varnishes and dopes, and it plays a crucial role as an alcohol denaturant. Its compatibility with a range of resins, such as cellulose acetates and polymethyl methacrylate, highlights its adaptability across industries. In the cosmetics sector, DEP is employed as a fixative in perfumes, ensuring the longevity and stability of fragrances, at concentrations of 0.1-0.5%. Additionally, it finds use as a component in deodorant formulations, insect repellents, and emulsions, showcasing its multifaceted applications both commercially and industrially.
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
