Eastman™ Triethyl Phosphate CAS No.78-40-0

Application/Uses

- Catalysts
- Flame resistant unsaturated polyester resins
- Hydraulic brakes
- Solvents

Product Description

Eastman™ TEP (Triethyl Phosphate) is a clear, colorless liquid having a mild pleasant odor. TEP is useful as a solvent in many applications, as a plasticizer for tough, fire-resistant plastics, and as an agricultural chemical as an intermediate in preparing tetraethyl pyrophosohate (TEPP).

Typical Properties

Property	Typical Value, Units
Molecular Weight	182.16
Molecular Formula	(C2H5O)3PO
Acidityas H3PO4	0.002%
Form	Clear, colorless liquid
Odor	Mild, cider-like
ColorPt-Co	<10 ppm
Specific Gravity@ 20°C/20°C	1.067-1.072
Boiling Point	209°C (408°F)
Refractive Index	1.4037 n(25°C/D)
Evaporation Rate@ 100°C	4.54 (g/1000 cm2)/h
Viscosity @ 20°C @ 71°C	1.76 cP 0.82 cP
Flash PointPensky-Martens Closed Cup	99°C (210°F)
Fire Point *a	141°C (285°F)
Flammability Limits in Air, % by Volume Lower @ 139°C Upper @ 163°C	1.7 Vol % 10 Vol %
Water	0.02 wt %
Melting Point	-56°C
Freezing Point	-56°C (-69°F)
Assay	99 wt % min.

*a Cleveland Open Cup

Comments

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.