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296996

Methyl acetate

anhydrous, 99.5%

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About This Item

Linear Formula:
CH3COOCH3
CAS Number:
79-20-9
Molecular Weight:
74.08
UNSPSC Code:
12352108
NACRES:
NA.21
PubChem Substance ID:
57648396
EC Number:
201-185-2
Beilstein/REAXYS Number:
1736662
MDL number:
MFCD00008711
Assay:
99.5%
Grade:
anhydrous
Bp:
57-58 °C (lit.)
Vapor pressure:
165 mmHg ( 20 °C)
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grade

anhydrous

Quality Segment

vapor density

2.55 (vs air)

vapor pressure

165 mmHg ( 20 °C)

assay

99.5%

form

liquid

autoignition temp.

936 °F

expl. lim.

16 %

impurities

<0.003% water, <0.005% water (100 mL pkg)

evapn. residue

<0.0003%

refractive index

n20/D 1.361 (lit.)

bp

57-58 °C (lit.)

mp

−98 °C (lit.)

density

0.934 g/mL at 25 °C

SMILES string

COC(C)=O

InChI

1S/C3H6O2/c1-3(4)5-2/h1-2H3

InChI key

KXKVLQRXCPHEJC-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.

Other Notes

The article number 296996-6X1L will be discontinued. Please order the single bottle 296996-1L which is physically identical with the same exact specifications.

Legal Information

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

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Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Codes

H225,H319,H336

Hazard Classifications

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

Target Organs

Central nervous system

supp_hazards

EUH066

Storage Class

3 - Flammable liquids

WGK

WGK 1

Flash Point (°F)

8.6 °F - closed cup

Flash Point (°C)

-13 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves

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