To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

How to transfigure the Wikipedia

Would you like Wikipedia to always look as professional and up-to-date? We have created a browser extension. It will enhance any encyclopedic page you visit with the magic of the WIKI 2 technology.

Try it — you can delete it anytime.

Install in 5 seconds
4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
Great Wikipedia has got greater.
.
Leo
Newton
Brights
Milds

Methyl acetate

From Wikipedia, the free encyclopedia

Not to be confused with Menthyl acetate.
Methyl acetate[1]
Skeletal formula of methyl acetate
Ball and stick model of the methyl acetate molecule
Names
Preferred IUPAC name
Methyl acetate
Systematic IUPAC name
Methyl ethanoate
Other names
Methyl ester of acetic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.001.078 Edit this at Wikidata
KEGG
UNII
  • InChI=1S/C3H6O2/c1-3(4)5-2/h1-2H3 checkY
    Key: KXKVLQRXCPHEJC-UHFFFAOYSA-N checkY
  • InChI=1/C3H6O2/c1-3(4)5-2/h1-2H3
    Key: KXKVLQRXCPHEJC-UHFFFAOYAV
  • O=C(OC)C
Properties
C3H6O2
Molar mass 74.079 g·mol−1
Appearance Colorless liquid
Odor Fragrant, fruity[2]
Density 0.932 g cm−3
Melting point −98 °C (−144 °F; 175 K)
Boiling point 56.9 °C (134.4 °F; 330.0 K)
~25% (20 °C)
Vapor pressure 173 mmHg (20°C)[2]
-42.60·10−6 cm3/mol
1.361
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability (yellow): no hazard codeSpecial hazards (white): no code
2
3
Flash point −10 °C; 14 °F; 263 K[2]
Explosive limits 3.1%-16%[2]
Lethal dose or concentration (LD, LC):
3700 mg/kg (oral, rabbit)[3]
11,039 ppm (mouse, 4 hr)
21,753 ppm (cat, 1 hr)
32,000 ppm (rat, 4 hr)[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 200 ppm (610 mg/m3)[2]
REL (Recommended)
 TWA 200 ppm (610 mg/m3) ST 250 ppm (760 mg/m3)[2]
IDLH (Immediate danger)
 3100 ppm[2]
Safety data sheet (SDS) External MSDS
Related compounds
Related esters
 Methyl formate
Ethyl acetate
Ethyl formate
Methyl fluoroacetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Methyl acetate, also known as MeOAc, acetic acid methyl ester or methyl ethanoate, is a carboxylate ester with the formula CH3COOCH3. It is a flammable liquid with a characteristically pleasant smell reminiscent of some glues and nail polish removers. Methyl acetate is occasionally used as a solvent, being weakly polar and lipophilic, but its close relative ethyl acetate is a more common solvent being less toxic and less soluble in water. Methyl acetate has a solubility of 25% in water at room temperature. At elevated temperature its solubility in water is much higher. Methyl acetate is not stable in the presence of strong aqueous bases or aqueous acids. Methyl acetate is not considered a VOC in the USA.[4][5]

YouTube Encyclopedic

  • 1/5
    Views:
    5 098
    946
    13 479
    1 248
    11 385
  • Methyl acetate
  • Methyl Acetate Iupac Name In Hindi | Surendra Khilery
  • Chemical Kinetics -2 , Acid catalyzed Hydrolysis of Methyl acetate
  • Methyl acetate
  • CHEMICAL KINETICS | HYDROLYSIS OF METHYL ACETATE || INTEGRATED RATE LAW || PSEUDO 1ST ORDER REACTION

Transcription

Preparation and reactions

Methyl acetate is produced industrially via the carbonylation of methanol as a byproduct of the production of acetic acid.[6] Methyl acetate also arises by esterification of acetic acid with methanol in the presence of strong acids such as sulfuric acid; this production process is famous because of Eastman Kodak's intensified process using a reactive distillation.

Reactions

In the presence of strong bases such as sodium hydroxide or strong acids such as hydrochloric acid or sulfuric acid it is hydrolyzed back into methanol and acetic acid, especially at elevated temperature. The conversion of methyl acetate back into its components, by an acid, is a first-order reaction with respect to the ester. The reaction of methyl acetate and a base, for example sodium hydroxide, is a second-order reaction with respect to both reactants.

Methyl acetate is a Lewis base that forms 1:1 adducts with a variety of Lewis acids. It is classified as a hard base and is a base in the ECW model with EB =1.63 and CB = 0.95.

Applications

A major use of methyl acetate is as a volatile low toxicity solvent in glues, paints, and nail polish removers.

Acetic anhydride is produced by carbonylation of methyl acetate in a process that was inspired by the Monsanto acetic acid synthesis.[7]

See also

References

  1. ^ Merck Index, 12th Edition, 6089.
  2. ^ a b c d e f g NIOSH Pocket Guide to Chemical Hazards. "#0391". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ a b "Methyl acetate". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ Zeno, W. Wicks, JR, Frank N. Jones, S. Peter Pappas, and Douglas A. Wicks (2007). Organic Coatings. Hoboken, New Jersey: Wiley. ISBN 978-0-471-69806-7.{{cite book}}: CS1 maint: multiple names: authors list (link)
  5. ^ "Update: U.S. EPA Exempt Volatile Organic Compounds". American Coatings Association. 2018-01-30. Retrieved 2019-03-20.
  6. ^ Hosea Cheung, Robin S. Tanke, G. Paul Torrence “Acetic Acid” in Ullmann's Encyclopedia of Industrial Chemistry, 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a01_045
  7. ^ Zoeller, J. R.; Agreda, V. H.; Cook, S. L.; Lafferty, N. L.; Polichnowski, S. W.; Pond, D. M. (1992). "Eastman Chemical Company Acetic Anhydride Process". Catalysis Today. 13: 73–91. doi:10.1016/0920-5861(92)80188-S.
This page was last edited on 3 February 2024, at 19:30
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.
Contact WIKI 2
Introduction
Terms of Service
Privacy Policy