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108456

Sigma-Aldrich

Trimethyl orthoformate

99%

Synonym(s):

Trimethoxymethane

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About This Item

Linear Formula:
CH(OCH3)3
CAS Number:
149-73-5
Molecular Weight:
106.12
Beilstein/REAXYS Number:
969215
EC Number:
205-745-7
MDL number:
MFCD00008483
UNSPSC Code:
12352100
eCl@ss:
39021015
PubChem Substance ID:
24846805
NACRES:
NA.22

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vapor density

3.67 (vs air)

Quality Level

200

vapor pressure

23.5 mmHg ( 20 °C)
40 mmHg ( 30 °C)
57 mmHg ( 40 °C)

assay

99%

expl. lim.

5.1 %

refractive index

n20/D 1.379 (lit.)

bp

101-102 °C (lit.)

density

0.97 g/mL at 25 °C (lit.)

functional group

ether

SMILES string

COC(OC)OC

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3054723040508.00885
Trimethyl orthoformate 99%

108456

Trimethyl orthoformate

Trimethyl orthoformate anhydrous, 99.8%

305472

Trimethyl orthoformate

Triethyl orthoformate anhydrous, 98%

304050

Triethyl orthoformate

Trimethyl orthoformate for synthesis

8.00885

Trimethyl orthoformate

vapor density

3.67 (vs air)

vapor density

3.67 (vs air)

vapor density

5.11 (vs air)

vapor density

-

vapor pressure

23.5 mmHg ( 20 °C)

vapor pressure

23.5 mmHg ( 20 °C), 40 mmHg ( 30 °C), 57 mmHg ( 40 °C)

vapor pressure

2.9 mmHg ( 20 °C)

vapor pressure

10 hPa ( 7 °C)

assay

99%

assay

99.8%

assay

98%

assay

≥98.0% (GC)

expl. lim.

5.1 %

expl. lim.

5.1 %

expl. lim.

-

expl. lim.

1.4-44.6 % (v/v)

refractive index

n20/D 1.379 (lit.)

refractive index

n20/D 1.379 (lit.)

refractive index

n20/D 1.391 (lit.)

refractive index

-

bp

101-102 °C (lit.)

bp

101-102 °C (lit.)

bp

146 °C (lit.)

bp

102 °C/1013 hPa

General description

Trimethyl orthoformate is an effective solvent for thallium(III) nitrate-mediated oxidations[1]. It undergoes acid catalyzed reaction with 6-(N-D-ribitylanilino) uracils to form 8-demethyl-8-hydroxy-5-deazariboflavins[2].

Application

Trimethyl orthoformate was used as dehydrating agent in the preparation of surface-modified colloidal silica nanoparticles[3].

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

55.4 °F - closed cup

flash_point_c

13 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ9299
BCCF4250
BCCD6527
BCCC1727
BCCB8421

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