Triethyl phosphate

Triethyl phosphate Properties

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
PH	7 (H2O, 20℃)
Odor	mild cider
explosive limit	1.2-10%(V)
Water Solubility	SOLUBLE
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
Merck	14,9674
BRN	1705772
Dielectric constant	7.2（20℃）
Stability	Stable. Combustible. Incompatible with strong oxidizing agents, water.
InChIKey	DQWPFSLDHJDLRL-UHFFFAOYSA-N
LogP	1.11 at 20℃
Indirect Additives used in Food Contact Substances	TRIETHYL PHOSPHATE
FDA 21 CFR	175.105
CAS DataBase Reference	78-40-0(CAS DataBase Reference)
FDA UNII	QIH4K96K7J
NIST Chemistry Reference	Triethyl phosphate(78-40-0)
EPA Substance Registry System	Triethyl phosphate (78-40-0)
UNSPSC Code	41116107
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H302-H319

Precautionary statements

Hazard Codes

Risk Statements

Safety Statements

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

NFPA 704

	1
1		1

Triethyl phosphate price More Price(28)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	8.21141	Triethyl phosphate for synthesis	78-40-0	100mL	$37.3	2024-03-01	Buy
Sigma-Aldrich	8.21141	Triethyl phosphate for synthesis	78-40-0	1L	$125	2024-03-01	Buy
Sigma-Aldrich	538728	Triethyl phosphate ReagentPlus , ≥99.8%	78-40-0	1l	$118	2024-03-01	Buy
Sigma-Aldrich	538728	Triethyl phosphate ReagentPlus , ≥99.8%	78-40-0	4l	$248	2024-03-01	Buy
TCI Chemical	P0270	Triethyl Phosphate >99.0%(GC)	78-40-0	25g	$18	2024-03-01	Buy

Product number	Packaging	Price	Buy
8.21141	100mL	$37.3	Buy
8.21141	1L	$125	Buy
538728	1l	$118	Buy
538728	4l	$248	Buy
P0270	25g	$18	Buy

Triethyl phosphate Chemical Properties,Uses,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.

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.

Definition

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

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 synthesis

Synthesis of Triethyl phosphate from Ethanol

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 (4-CYANOBENZYL)PHOSPHONIC ACID DIETHYL ESTER 5-(BROMOMETHYL)-2,1,3-BENZOXADIAZOLE

Diethyl (trichloromethyl)phosphonate METHYL 2-((PIPERIDIN-4-YL)METHYL)BENZOATE (Phosphoric diethyl)N,N,N',N'-tetramethyldiamidophosphoric anhydride METHANE ketene

ETHYL ACETATE, [1-14C]

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Triethyl phosphate Suppliers

Global( 628)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
SIMAGCHEM CORP	+86-13806087780	sale@simagchem.com	China	17357	58
Xiamen AmoyChem Co., Ltd	+86-86-5926051114 +8615060885618	sales@amoychem.com	China	6383	58
Dideu Industries Group Limited	+86-29-89586680 +86-15129568250	1026@dideu.com	China	22855	58
Zhangjiagang Xinya Chemical Co., Ltd.	+86-0512-58980899 +86-13915696858	sales@zjgxinyachem.com	China	44	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418684 +8618949823763	sales@tnjchem.com	China	25356	58
Hebei Chuanghai Biotechnology Co., Ltd	+8615531157085	abby@chuanghaibio.com	China	8808	58
Hebei Yanxi Chemical Co., Ltd.	+8617531153977	allison@yan-xi.com	China	5854	58
Wuhan Fortuna Chemical Co., Ltd	+86-027-59207850	info@fortunachem.com	China	5975	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-13131129325	sales1@chuanghaibio.com	China	5868	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20233	58

Supplier	Advantage
SIMAGCHEM CORP	58
Xiamen AmoyChem Co., Ltd	58
Dideu Industries Group Limited	58
Zhangjiagang Xinya Chemical Co., Ltd.	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Hebei Chuanghai Biotechnology Co., Ltd	58
Hebei Yanxi Chemical Co., Ltd.	58
Wuhan Fortuna Chemical Co., Ltd	58
Hebei Chuanghai Biotechnology Co,.LTD	58
Henan Fengda Chemical Co., Ltd	58

View Lastest Price from Triethyl phosphate manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-04-28	Triethyl phosphate (TEP) 78-40-0	US $0.00 / Kg/Drum	200KG	99.5%min	300tons/month	WUHAN FORTUNA CHEMICAL CO., LTD
2025-04-28	Triethyl phosphate 78-40-0	US $0.00-0.00 / kg	1kg	99.99%	20 tons	Chongqing Soarwin Technology Co., Ltd
2025-04-28	Triethyl phosphate 78-40-0	US $0.00-0.00 / kg	1kg	99.99%	20 tons	Chongqing Soarwin Technology Co., Ltd

Triethyl phosphate (TEP)
78-40-0
US $0.00 / Kg/Drum
99.5%min
WUHAN FORTUNA CHEMICAL CO., LTD

Triethyl phosphate
78-40-0
US $0.00-0.00 / kg
99.99%
Chongqing Soarwin Technology Co., Ltd

Triethyl phosphate
78-40-0
US $0.00-0.00 / kg
99.99%
Chongqing Soarwin Technology Co., Ltd

Triethyl phosphate Spectrum

Triethyl phosphate(78-40-0)MS Triethyl phosphate(78-40-0)¹HNMR Triethyl phosphate(78-40-0)¹³CNMR Triethyl phosphate(78-40-0)IR1 Triethyl phosphate(78-40-0)IR2 Triethyl phosphate(78-40-0)Raman

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