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Merck
CN

75548

Trimethyl orthoformate

puriss., ≥99.0% (GC)

Synonym(s):

Trimethoxymethane

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About This Item

Linear Formula:
CH(OCH3)3
CAS Number:
149-73-5
Molecular Weight:
106.12
EC Number:
205-745-7
UNSPSC Code:
12352100
MDL number:
MFCD00008483
Beilstein/REAXYS Number:
969215

Key Documents

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vapor density

3.67 (vs air)

vapor pressure

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

grade

puriss.

assay

≥99.0% (GC)

expl. lim.

5.1 %

refractive index

n20/D 1.379

bp

101-102 °C (lit.)

density

0.97 g/mL at 25 °C (lit.)

SMILES string

COC(OC)OC

InChI

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

InChI key

PYOKUURKVVELLB-UHFFFAOYSA-N

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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

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

Regulatory Information

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D Timothy Anstine et al.
Monatshefte fur chemie, 145(7), 1117-1135 (2014-08-12)
Three new linear pentapyrrole rubinoid analogs: 2,3,7,8,17,18,22,23-octamethyl-12,13-bis-(2-carboxyethyl)-1,10,15,24,25,27,28,29-octahydro-27H-pentapyrrin-1,24-dione and 2,3,8,12,13,17,22,23-octamethyl-7,18-bis-(2-carboxyethyl)-1,10,15,24,25,26,27,28,29-octahydro-27H-pentapyrrin-1,24-dione, and its 7,18-dihexanoic acid analog were synthesized, respectively, from 2,3,7,8-tetramethyl-(10H)-dipyrrin-2-one, from 2,3,8-trimethyl-7-[2-(methoxycarbonyl)ethyl]-(10H)-dipyrrinone, and 2,3,8-trimethyl-7-[5-(methoxycarbonyl)pentyl]-(10H)-dipyrrinone. 13C NMR and 1H NMR measurements in (CD3)2SO confirmed the pentapyrrole structures, while 1H NMR data indicate

Global Trade Item Number

SKUGTIN
370118-1G04061826662854
370118-5G04061833322581

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