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149-73-5

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Identification

Name
Trimethoxymethane
CAS
149-73-5
Synonyms
METHYL ORTHOFORMATE
ORTHOFORMIC ACID TRIMETHYL ESTER
TMOF
TRIMETHOXYMETHANE
TRIMETHYL-O-FORMATE
TRIMETHYL ORTHOFORMATE
CH(OCH3)3
Methane,trimethoxy-
Methoxymethylal
Methylester kyseliny orthomravenci
methylesterkyselinyorthomravenci
methylesterkyselinyorthomravenci(czech)
Orthoformic acid methyl ester
orthoformicacidmethylester
Orthomravencan methylnaty
orthomravencanmethylnaty
orthomravencanmethylnaty(czech)
trimethoxy-methan
Trimethylester kyseliny orthomravenci
trimethylesterkyselinyorthomravenci
EINECS(EC#)
205-745-7
Molecular Formula
C4H10O3
MDL Number
MFCD00008483
Molecular Weight
106.12
MOL File
149-73-5.mol

Chemical Properties

Appearance
Colorless liquid
Melting point 
-53 °C
mp 
-53 °C
Boiling point 
101-102 °C(lit.)

bp 
101-102 °C(lit.)

density 
0.97 g/mL at 25 °C(lit.)

vapor density 
3.67 (vs air)

vapor pressure 
23.5 mm Hg ( 20 °C)

refractive index 
n20/D 1.379(lit.)

Fp 
60 °F

storage temp. 
Store at RT.
solubility 
Miscible with ether, alcohol and benzene.
form 
Liquid
color 
Clear colorless
explosive limit
1.4-44.6%(V)
Water Solubility 
10 g/L (hydrolysis)
Sensitive 
Moisture Sensitive
Merck 
14,6884
BRN 
969215
InChIKey
PYOKUURKVVELLB-UHFFFAOYSA-N
CAS DataBase Reference
149-73-5(CAS DataBase Reference)
NIST Chemistry Reference
Methane, trimethoxy-(149-73-5)
EPA Substance Registry System
149-73-5(EPA Substance)

Safety Data

Hazard Codes 
F,Xi
Risk Statements 
R11:Highly Flammable.
R36:Irritating to the eyes.
Safety Statements 
S9:Keep container in a well-ventilated place .
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S29:Do not empty into drains .
RIDADR 
UN 3272 3/PG 2

WGK Germany 
1

RTECS 
RM6650000

Autoignition Temperature
255 °C
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29159080
Safety Profile
A skin and eye irritant. A very dangerous fire hazard when exposed to heat or flame; can react with oxidizing materials. Hazardous to prepare. To fight fire, use CO2, fog, haze. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
Hazardous Substances Data
149-73-5(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 3130 mg/kg

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

Hazard Information

Chemical Properties
Colorless liquid

Spectrum Detail

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