Triethyl phosphate

Description

Triethyl phosphate · CAS 78-40-0 · C6H15O4P. UNII QIH4K96K7J. Boiling Point: 215.5 °C; Boiling Point: 215 °C; Boiling Point: 215.5 °C @760 [mm Hg].

Identification

CAS Registry Number	78-40-0
PubChem CID	6535
Molecular formula	C6H15O4P
IUPAC name	triethyl phosphate
UNII (FDA)	QIH4K96K7J

Computed Descriptors

Molecular Weight	182.15
XLogP3	0.8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	6
Exact Mass	182.07079595
Monoisotopic Mass	182.07079595
Topological Polar Surface Area	44.8
Heavy Atom Count	11
Formal Charge	0

Physical & Chemical Properties

Boiling Point	215.5 °C
Boiling Point	215 °C
Boiling Point	215.5 °C @760 [mm Hg]
Melting Point	-69.5 °F (NTP, 1992)
Melting Point	-56.4 °C
Melting Point	-57 °C
Flash Point	240 °F (NTP, 1992)
Flash Point	240 °F (115 °C) (Open cup)
Flash Point	116 °C o.c.
Solubility	In water, 5.00X10+5 mg/L at 25 °C

Physical description & handling notes

• Triethyl phosphate appears as a colorless, corrosive liquid. Combustible. Slowly dissolves in water and sinks in water. Severely irritates skin, eyes and mucous membranes.
• Liquid; CBI; Dry Powder
• Colorless liquid with a mild pleasant odor; [HSDB]
• COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.
• Liquid
• Colorless, high-boiling liquid

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS

GHS Hazard Classification

Reported hazard statements	H302, H319 (39.3%), H336, H361, H371

Documented Uses

• Used as a catalyst for acetic anhydride; as a desensitizing agent for peroxides; as a solvent; as a plasticizer for resins, plastics, and gums; as a lacquer remover; as a fire-retarding, anti-foaming, and ethylating agent; as a raw material for insecticides; and to make insecticides; [HSDB]
• Used as a catalyst in the production of acetic anhydride by the ketene process, as a desensitizing agent for peroxides, and as a solvent and plasticizer for cellulose acetate.
• Solvent; plasticizer for resins, plastics, gums; catalyst; lacquer remover.
• As a plasticizer, solvent, fire-retarding agent, anti-foaming agent
• As an ethylating agent, and as a raw material to prepare insecticides such as tetraethyl pyrophosphate.
• As ethylating agent; formation of polyesters which are used as insecticides.

Synonyms

TRIETHYL PHOSPHATE; 78-40-0; Triethylphosphate; Tris(ethyl) phosphate; Triethoxyphosphine oxide; Phosphoric acid, triethyl ester; Triethylfosfat; Ethyl phosphate ((EtO)3PO); o-Phosphoric acid triethyl ester; DTXSID8026228; QIH4K96K7J; NSC-2677; DTXCID806228; CHEBI:45927; 201-114-5; RefChem:191513

Frequently Asked Questions

What are the CAS number and molecular formula of Triethyl phosphate?

CAS 78-40-0; molecular formula C6H15O4P; molecular weight — g/mol.

What other names is Triethyl phosphate known by?

TRIETHYL PHOSPHATE, 78-40-0, Triethylphosphate, Tris(ethyl) phosphate, Triethoxyphosphine oxide, Phosphoric acid, triethyl ester.

What is the regulatory status of Triethyl phosphate?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Triethyl phosphate classified as hazardous?

Hazard statements reported: H302, H319, H336, H361, H371.

What are the key physical properties of Triethyl phosphate?

Boiling Point: 215.5 °C; Boiling Point: 215 °C; Boiling Point: 215.5 °C @760 [mm Hg]; Melting Point: -69.5 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.