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Triethyl Orthoformate

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Name Triethyl Orthoformate EINECS 204-550-4
CAS No. 122-51-0 Density 0.891 g/cm3
Solubility 1.35 g/L in water Melting Point -76 °C(lit.)
Formula C7H16O3 Boiling Point 142.5 °C at 760 mmHg
Molecular Weight 148.23 Flash Point 30 °C
Transport Information UN 2524 3/PG 3 Appearance colorless liquid, with spicy odor
Safety 16-26-37/39 Risk Codes 10-36/38
Molecular Structure Molecular Structure of 122-51-0 (Triethyl orthoformate) Hazard Symbols IrritantXi
Synonyms

Ethyl formate(ortho);Triethoxymethane;Ethane, 1,1,1-[methylidynetris (oxy)]tris-;diethoxymethoxyethane;Orthomravencan ethylnaty;1,1,1-[methanetriyltris(oxy)]triethane;Triethylester kyseliny orthomravenci [Czech];Methane, triethoxy-;Ethyl orthoformate [UN2524] [Flammable liquid];Ethone;Orthoformic acid, ethyl ester;Ethylester kyseliny orthomravenci [Czech];Orthoformic acid ethyl ester (VAN);Ethylester kyseliny orthomravenci;Orthoformic acid triethyl ester;1,1,1-(Methylidynetris(oxy))tris(ethane);Ethane,1,1',1''-[methylidynetris(oxy)]tris-;Orthomravencan ethylnaty [Czech];Orthoformic acid, triethyl ester;Ethyl Orthoformate, Certified;

 

Chemistry

Molecular Structure:

Molecular Formula: C7H16O3
Molecular Weight: 148.2001
IUPAC Name: Diethoxymethoxyethane
Synonyms of Triethyl Orthoformate (CAS NO.122-51-0): 1,1',1'-(Methylidynetris(oxy))tris(ethane) ; 4-02-00-00025 (Beilstein Handbook Reference) ; AI3-24333 ; Aethon ; BRN 0605384 ; EINECS 204-550-4 ; Ethone ; Ethyl formate(ortho) ; Ethylester kyseliny orthomravenci ; Ethylester kyseliny orthomravenci [Czech] ; Methane, triethoxy- ; NSC 5289 ; Orthoformic acid ethyl ester (VAN) ; Orthoformic acid triethyl ester ; Orthoformic acid, ethyl ester ; Orthomravencan ethylnaty ; Orthomravencan ethylnaty [Czech] ; Triethoxymethane ; Triethyl orthoformate ; Triethylester kyseliny orthomravenci ; Triethylester kyseliny orthomravenci [Czech] ; Ethane, 1,1',1''-(methylidynetris(oxy))tris- ; Ethyl orthoformate [UN2524] [Flammable liquid] ; UN2524
CAS NO: 122-51-0
Classification Code: Skin / Eye Irritant
Melting point: −76 °C 
Index of Refraction: 1.4
Molar Refractivity: 39.67 cm3
Molar Volume: 163.5 cm3
Surface Tension: 25.3 dyne/cm
Density: 0.906 g/cm3
Flash Point: 30 °C
Enthalpy of Vaporization: 36.4 kJ/mol
Boiling Point: 142.5 °C at 760 mmHg
Vapour Pressure: 6.99 mmHg at 25°C

Uses

 Triethyl Orthoformate (CAS NO.122-51-0) is used to make other chemicals.

Production

 Triethyl Orthoformate (CAS NO.122-51-0)  may be prepared from the reaction of sodium ethoxide and chloroform.
CHCl3 + 3 Na + 3 EtOH → HC(OEt)3 + 3/2 H2 + 3 NaCl

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 skin > 10mL/kg (10mL/kg)   Food and Cosmetics Toxicology. Vol. 17, Pg. 917, 1979.
rabbit LD50 skin 20mL/kg (20mL/kg)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 4, Pg. 119, 1951.
rat LCLo inhalation 4000ppm/8H (4000ppm)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 4, Pg. 119, 1951.
rat LD50 oral 7060mg/kg (7060mg/kg)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 4, Pg. 119, 1951.

Safety Profile

Hazard Codes of Triethyl Orthoformate (CAS NO.122-51-0): IrritantXi
Risk Statements: 10-36/38 
R10: Flammable. 
R36/38: Irritating to eyes and skin.
Safety Statements: 16-26-37/39-36 
S16: Keep away from sources of ignition. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39: Wear suitable gloves and eye/face protection. 
S36: Wear suitable protective clothing.
RIDADR: UN 2524 3/PG 3
WGK Germany: 1
RTECS: RM6475000
F: 21
HazardClass: 3
PackingGroup: III
HS Code: 29159080

Specification

European/International Regulations
European Labeling in Accordance with EC Directives

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