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Merck
CN

291056

Methyl formate

anhydrous, 99%

Synonym(s):

Formic acid methyl ester

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About This Item

Linear Formula:
HCO2CH3
CAS Number:
Molecular Weight:
60.05
UNSPSC Code:
12352108
NACRES:
NA.21
PubChem Substance ID:
EC Number:
203-481-7
Beilstein/REAXYS Number:
1734623
MDL number:
Assay:
99%
Grade:
anhydrous
Bp:
32-34 °C (lit.)
Vapor pressure:
32.91 psi ( 55 °C), 9.47 psi ( 20 °C)
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grade

anhydrous

Quality Segment

vapor density

2.1 (vs air)

vapor pressure

32.91 psi ( 55 °C), 9.47 psi ( 20 °C)

assay

99%

form

liquid

autoignition temp.

842 °F

expl. lim.

23 %

impurities

<0.005% water

evapn. residue

<0.0005%

refractive index

n20/D 1.343 (lit.)

pH

4-5 (20 °C, 200 g/L)

bp

32-34 °C (lit.)

mp

−100 °C (lit.)

density

0.974 g/mL at 20 °C (lit.)

SMILES string

[H]C(=O)OC

InChI

1S/C2H4O2/c1-4-2-3/h2H,1H3

InChI key

TZIHFWKZFHZASV-UHFFFAOYSA-N

General description

Our anhydrous solvents deliver exceptionally low water content, making them the ideal choice for moisture-sensitive laboratory applications. Packaged in the exclusive Sure/Seal™ septum bottle system, they are reliably protected against moisture ingress from first use to last drop. The innovative Sure/Seal™ closure combines an advanced plug-style liner with an airtight elastomer and crimp cap design to ensure consistent product integrity. Three unique liner materials provide optimal chemical compatibility across a broad range of solvents. Sure/Seal™ packaging is proven to maintain anhydrous conditions even after repeated punctures. With more than 70 products across all major solvent families, available in pack sizes from 100 mL to 2 L, the portfolio meets virtually every laboratory need. By choosing ready-to-use anhydrous solvents in Sure/Seal™ packaging, researchers eliminate the need for time-consuming and hazardous in-house solvent drying and distillation - saving time, reducing risk, and improving reproducibility.

Application

Anhydrous solvents in Sure/Seal™ packaging are essential wherever water contamination would compromise experimental results. They are widely used in moisture-sensitive applications such as organic synthesis - including Grignard reactions, organometallic chemistry, and catalysis - as well as in peptide, oligonucleotide, and pharmaceutical synthesis.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC


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Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Irrit. 2 - Flam. Liq. 1 - STOT SE 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class

3 - Flammable liquids

Flash Point (°F)

-2.2 °F - closed cup

Flash Point (°C)

-19 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves



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