ChemicalBook > CAS DataBase List > Triethyl phosphate

Triethyl phosphate

Product Name
Triethyl phosphate
CAS No.
78-40-0
Chemical Name
Triethyl phosphate
Synonyms
TEP;Triethylphosph;Triethylfosfat;ETHYL PHOSPHATE;Phosphoric ether;Ethyl phosphate, tri-;TRIETHYL ORTHOPHOSPHATE;Ethyl phosphate ((EtO)3PO);Triethylphosphatecolorlessliq;o-Phosphoric acid triethyl ester
CBNumber
CB1854370
Molecular Formula
C6H15O4P
Formula Weight
182.15
MOL File
78-40-0.mol
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Triethyl phosphate Property

Melting point:
-56 °C
Boiling point:
215 °C (lit.)
Density 
1.072 g/mL at 25 °C (lit.)
vapor density 
6.28 (vs air)
vapor pressure 
1 mm Hg ( 40 °C)
refractive index 
n20/D 1.403(lit.)
Flash point:
240 °F
storage temp. 
Store below +30°C.
solubility 
500g/l (slow decomposition)
form 
Liquid
color 
Clear
Specific Gravity
1.072
Odor
mild cider
PH
7 (H2O, 20℃)
explosive limit
1.2-10%(V)
Water Solubility 
SOLUBLE
Hydrolytic Sensitivity
7: reacts slowly with moisture/water
Merck 
14,9674
BRN 
1705772
Dielectric constant
13.01
Dielectric constant
7.2（20℃）
Stability:
Stable. Combustible. Incompatible with strong oxidizing agents, water.
InChIKey
DQWPFSLDHJDLRL-UHFFFAOYSA-N
LogP
1.11 at 20℃
CAS DataBase Reference
78-40-0(CAS DataBase Reference)
NIST Chemistry Reference
Triethyl phosphate(78-40-0)
EPA Substance Registry System
Triethyl phosphate (78-40-0)
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Safety

Hazard Codes 
Xn
Risk Statements 
22-36
Safety Statements 
25-26
WGK Germany 
1
RTECS 
TC7900000
Autoignition Temperature
845 °F
TSCA 
Yes
HS Code 
29190090
Hazardous Substances Data
78-40-0(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 1165 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H319Causes serious eye irritation

Precautionary statements

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.21141
Product name
Triethyl phosphate
Purity
for synthesis
Packaging
100mL
Price
$37.3
Updated
2024/03/01
Sigma-Aldrich
Product number
8.21141
Product name
Triethyl phosphate
Purity
for synthesis
Packaging
1L
Price
$125
Updated
2024/03/01
Sigma-Aldrich
Product number
538728
Product name
Triethyl phosphate
Purity
ReagentPlus , ≥99.8%
Packaging
1l
Price
$118
Updated
2024/03/01
Sigma-Aldrich
Product number
538728
Product name
Triethyl phosphate
Purity
ReagentPlus , ≥99.8%
Packaging
4l
Price
$248
Updated
2024/03/01
TCI Chemical
Product number
P0270
Product name
Triethyl Phosphate
Purity
>99.0%(GC)
Packaging
25g
Price
$18
Updated
2024/03/01
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Triethyl phosphate Chemical Properties,Usage,Production

Chemical Properties

Triethyl Phosphate (TEP) is a colorless, high-boiling liquid and containing 17 wt % phosphorus; mild odor. Very stable at ordinary temperatures, compatible with many gums and resins, soluble in most organic solvents, miscible with water. When mixed with water is quite stable at room temperature, but at elevated temperatures it hydrolyzes slowly.

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 pyrophosphate (TEPP).
Like other phosphate esters, Triethyl phosphate damages nerves and is a cholinesterase inhibitor. It is regarded as moderately toxic. Two other alkyl phosphates with toxicities probably similar to that of triethylphosphate are tributylphosphate, (n-C4H9O)3PO, and tris(2-ethylhexyl)-phosphate, (C8H17O)3PO.

Uses

Triethyl phosphate is use as a flame retardant in the manufacture of polyisocyanurate (PIR) and polyurethane (PUR) foam insulation and thermoset plastic products. The chemical compound is also used as a viscosity reducer in plastic resins, and as a catalyst, solvent or intermediate in the production of pesticides, pharmaceuticals, lacquers and other products.As ethylating agent; formation of polyesters which are used as insecticides.

Definition

ChEBI: Triethyl phosphate is a trialkyl phosphate that is the triethy ester derivative of phosphoric acid. It derives from an ethanol.

Production Methods

Triethyl phosphate is manufactured from diethyl ether and phosphorus pentoxide via a metaphosphate intermediate.
Prepared by the reaction of tetraethyl hypophosphate with ethanol in the presence of aluminum ethoxide or by treating triethyl phosphate with diethyl hydrogen phosphate.

Synthesis Reference(s)

The Journal of Organic Chemistry, 25, p. 1000, 1960 DOI: 10.1021/jo01076a035

General Description

Triethyl phosphate [78-40-0] is a colorless, corrosive liquid. Combustible. Slowly dissolves in water and sinks in water. Severely irritates skin, eyes and mucous membranes. It is manufactured from diethyl ether and phosphorus pentoxide via a metaphosphate intermediate. Triethyl phosphate has been used commercially as an additive for polyester laminates and in cellulosics. In polyester resins it functions as a viscosity depressant and as a flame retardant. The viscosity-depressant effect of triethyl phosphate in polyester resin permits high loadings of alumina trihydrate,a fire-retardant smoke-suppressant filler. Triethyl phosphate has also been employed as a flame-resistant plasticizer in cellulose acetate.Because of its water solubility the use of triethyl phosphate is limited to situations where weathering resistance is unimportant.The halogenated alkyl phosphates are generally used for applications where lower volatility and greater resistance to leaching are required.

Air & Water Reactions

Slowly dissolves in water with slight decomposition .

Reactivity Profile

Organophosphates, such as Triethyl phosphate, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.

Health Hazard

May be harmful by inhalation, ingestion or absorption. May cause irritation.

Fire Hazard

Special Hazards of Combustion Products: May produce hazardous decomposition products such as carbon dioxide, carbon monoxide and oxides of phosphorus.

Flammability and Explosibility

Non flammable

Safety Profile

Triethyl Phosphate is a flame retardant that exhibits low acute toxicity after oral, dermal or inhalation exposure. It is moderately toxic by ingestion, intraperitoneal, and intravenous routes. Experimental reproductive effects. Mutation data reported. Causes cholinesterase inhibition, but to a lesser extent than parathion. May be expected to cause nerve injury similar to that of other phosphate esters. Triethyl phosphate is stable under normal conditions of use. Avoid contact with strong bases and oxidizing agents. Triethyl phosphate is combustible at high temperatures. Heating to decomposition may release carbon dioxide, carbon monoxide, phosphorus oxides and other potentially toxic fumes or gases. Avoid heat, open flames and other potential sources of ignition.

Triethyl phosphate Preparation Products And Raw materials

Raw materials

Phosphorus oxychloride Phosphorus trichloride

Preparation Products

BENZOFURAZAN-5-CARBONYL CHLORIDE Acetyl ketene METHYL 3-((PIPERIDIN-4-YL)METHYL)BENZOATE Faropenem sodium hemipentahydrate 4-((1-(TERT-BUTOXYCARBONYL)PIPERIDIN-4-YL)METHYL)BENZOIC ACID METHYL 4-((PIPERIDIN-4-YL)METHYL)BENZOATE Acetylacetone 2-((1-(TERT-BUTOXYCARBONYL)PIPERIDIN-4-YL)METHYL)BENZOIC ACID Acetic anhydride neutral size AKD 3-((1-(TERT-BUTOXYCARBONYL)PIPERIDIN-4-YL)METHYL)BENZOIC ACID Cidofovir Butyl acrylate 5-(BROMOMETHYL)-2,1,3-BENZOXADIAZOLE METHYL 2-((PIPERIDIN-4-YL)METHYL)BENZOATE METHANE ketene
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View Lastest Price from Triethyl phosphate manufacturers

HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
Product
Triethyl phosphate 78-40-0
Price
US $999.00-800.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000
Release date
2024-08-22
WUHAN FORTUNA CHEMICAL CO., LTD
Product
Triethyl phosphate (TEP) 78-40-0
Price
US $0.00/Kg/Drum
Min. Order
200KG
Purity
99.5%min
Supply Ability
300tons/month
Release date
2021-06-03
Hebei Zhuanglai Chemical Trading Co Ltd
Product
Triethyl Phosphate TEP 78-40-0
Price
US $79.00-38.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20ton
Release date
2024-11-18

78-40-0, Triethyl phosphateRelated Search:

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