Basic information
- Name:
Triethyl phosphate
- CAS No.:
78-40-0
- Molecular Structure:
- Formula:
- C6H15O4P
- Molecular Weight:
- 182.15 .
- Synonyms:
- Triethylphosphate;Phosphoric acid, triethyl ester;Triethoxyphosphine oxide;1-diethoxyphosphoryloxyethane;Ethyl phosphate ((EtO)3PO);Triethylfosfat [Czech];Tris(ethyl) phosphate;Phosphoric acid,esters,triethyl ester;Levagard TEP;Ethyl phosphate (VAN);TEP Triethyl phosphate;Triethyl phosphate (TEP);Triethyl Phosp;TEP;Triethyl phosphate(TEP);
- EINECS:
- 201-114-5
- Density:
- 1.066 g/cm3
- Melting Point:
- -56.4 ºC
- Boiling Point:
- 219.3 ºC at 760 mmHg
- Flash Point:
- 115.6 ºC
- Appearance:
- colourless liquid with a mild odour
- Hazard Symbols:
Xn- Risk Codes:
- 22
- Safety Description:
- 25 Details
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Chemistry
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IUPAC Name: Triethyl phosphate
Molecular Formula: C6H15O4P
Molecular Weight: 182.15 g/mol
Canonical SMILES: P(OCC)(OCC)(OCC)=O
InChI: InChI=1/C6H15O4P/c1-4-8-11(7,9-5-2)10-6-3/h4-6H2,1-3H3
EINECS: 201-114-5
Classification Code: Mutation data; Reproductive Effect; Skin / Eye Irritant
Product Categories: Organics;Functional Materials;Phosphates (Plasticizer);Plasticizer
Water Solubility: soluble
Density: 1.066 g/cm3
Flash Point: 115.6 °C
Enthalpy of Vaporization: 43.72 kJ/mol
Boiling Point: 219.3 °C at 760 mmHg
Vapor pressure: 1 mm Hg ( 40 °C)
Melting Point: -56 °C
Vapour Pressure of Triethyl Phosphate (CAS NO.78-40-0): 0.177 mmHg at 25 °C
History
Triethyl phosphate was firstly studied by a French chemist named Jean Louis Lassaigne in the early 1800s.
Uses
Triethyl Phosphate (CAS NO.78-40-0), its primary uses are as an industrial catalyst, a polymer resin modifier, and a plasticizer (eg. for unsaturated polyesters). In smaller scale it is used as a solvent for eg. cellulose acetate, flame retardant, an intermediate for pesticides and other chemicals, stabilizer for peroxides, a strength agent for rubber and plastic including vinyl polymers and unsaturated polyesters, etc. It is is also a common intermediate in the manufacture of pesticides. Triethyl phosphate is also a common intermediate in the manufacture of pesticides.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| guinea pig | LD50 | intraperitoneal | 800mg/kg (800mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 605, 1969. |
| guinea pig | LD50 | oral | 1600mg/kg (1600mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 605, 1969. |
| guinea pig | LD50 | skin | > 20mL/kg (20mL/kg) | National Technical Information Service. Vol. OTS0528351, | |
| mouse | LC | inhalation | > 44300ug/m3/4 (44.3mg/m3) | "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 227, 1999. | |
| mouse | LD50 | intraperitoneal | 485mg/kg (485mg/kg) | Therapie. Vol. 15, Pg. 237, 1960. | |
| mouse | LD50 | oral | 1180mg/kg (1180mg/kg) | BRAIN AND COVERINGS: RECORDINGS FROM SPECIFIC AREAS OF CNS BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ATAXIA | "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 227, 1999. |
| rat | LCLo | inhalation | 28000ppm/6H (28000ppm) | American Industrial Hygiene Association Journal. Vol. 34, Pg. 286, 1973. | |
| rat | LD50 | intraperitoneal | 800mg/kg (800mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 605, 1969. |
| rat | LD50 | oral | 1165mg/kg (1165mg/kg) | BRAIN AND COVERINGS: RECORDINGS FROM SPECIFIC AREAS OF CNS BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ATAXIA | "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 227, 1999. |
| rat | LDLo | intravenous | 1gm/kg (1000mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC BEHAVIORAL: MUSCLE WEAKNESS LUNGS, THORAX, OR RESPIRATION: DYSPNEA | Nature. Vol. 179, Pg. 154, 1957. |
Safety Profile
Hazard Codes: 
Xn
Risk Statements: 22
R22: Harmful if swallowed.
Safety Statements: 25
S25: Avoid contact with eyes.
WGK Germany: 1
RTECS of Triethyl Phosphate (CAS NO.78-40-0): TC7900000
Specification
Triethyl Phosphate (CAS NO.78-40-0), its Synonyms are Phosphoric acid, triethyl ester ; Tris(ethyl) phosphate ; Triethylfosfat ; Phosphoric acid, triethyl ester ; TEP ; Triethoxyphosphine oxide ; Ethyl phosphate . Triethyl phosphate is a colorless liquid.