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Merck
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Key Documents

8.00885

Sigma-Aldrich

Trimethyl orthoformate

for synthesis

Synonym(s):

Trimethyl orthoformate, Methyl orthoformate, Orthoformic acid trimethyl ester

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About This Item

Linear Formula:
CH(OCH3)3
CAS Number:
149-73-5
Molecular Weight:
106.12
MDL number:
MFCD00008483
UNSPSC Code:
12352112
EC Index Number:
205-745-7

vapor pressure

10 hPa ( 7 °C)

Quality Level

200

Assay

≥98.0% (GC)

form

liquid

autoignition temp.

255 °C

potency

3130 mg/kg LD50, oral (Rat)

expl. lim.

1.4-44.6 % (v/v)

bp

102 °C/1013 hPa

mp

-53 °C

transition temp

flash point 13 °C

solubility

10 g/L (Hydrolysis)

density

0.97 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C4H10O3/c1-5-4(6-2)7-3/h4H,1-3H3

InChI key

PYOKUURKVVELLB-UHFFFAOYSA-N

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.968 - 0.970
Identity (IR): passes test

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H225 - H319

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

55.4 °F - closed cup

Flash Point(C)

13 °C - closed cup

Certificates of Analysis (COA)

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