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Methyl methacrylate

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Methyl methacrylate (MMA) is an organic compound with the formulaCH2=C(CH3)COOCH3. This colorless liquid, the methyl ester of methacrylic acid (MAA), is a monomer produced on a large scale for the production of poly(methyl methacrylate) (PMMA). HistoryMMA was discovered by Bernhard Tollens and his student W. A. Caspary in 1873, who noticed and described its tendency to change into a clear, hard, transparent substance especially in sunlight.

Poly(methyl methacrylate)Poly(methyl methacrylate)Poly(methyl methacrylate) (PMMA) is a synthetic polymer derived from methyl methacrylate. It is a transparentthermoplastic used as an engineering plastic. PMMA is also known as acrylic and acrylic glass and by the trade names and brands Crylux, Walcast, Wanjiale, Hesalite, Plexiglas, Acrylite, Lucite, PerClax, and Perspex, among several others (see below). This plastic is often used in sheet form as a lightweight or shatter-resistant alternative to glass.Methacrylic acidMethacrylic acidNames IUPAC nameMethacrylic acidPreferred IUPAC name2-Methylprop-2-enoic acidOther names Methacrylic acid2-Methyl-2-propenoic acidα-Methacrylic acid2-Methylacrylic acid2-Methylpropenoic acidIdentifiers CAS Number79-41-43D model (JSmol)Interactive imageAbbreviations MAA ChEBICHEBI:25219ChemSpider3951ECHA InfoCard100.001.096EC Number201-204-4MeSHC008384PubChemCID4093UNII1CS02G8656CompTox Dashboard(EPA)DTXSID3025542InChIInChI=1S/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6)Key: CERQOIWHTDAKMF-UHFFFAOYSA-NSMILESCC(C(O)=O)=CProperties Chemical formulaC4H6O2Molar mass86.09 g/mol Appearance Colorless liquid OdorAcrid, repulsive Density1.015 g/cm Melting point14 to 15 °C (57 to 59 °F; 287 to 288 K) Boiling point161 °C (322 °F; 434 K) Solubility in water9% (25 °C) Vapor pressure0.7 mmHg (20 °C) Hazards GHS labelling: PictogramsSignal wordDangerHazard statementsH302, H312, H314Precautionary statementsP260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P405, P501NFPA 704 (fire diamond) 322Flash point77.2 °C (171.0 °F; 350.3 K) NIOSH (US health exposure limits): PEL (Permissible)none REL (Recommended)TWA 20 ppm (70 mg/m) [skin] IDLH (Immediate danger)N.D. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).Nverify ( ?)Ammonium bisulfateAmmonium bisulfateAmmonium bisulfate, also known as ammonium hydrogen sulfate, is a white, crystalline solid with the formula (NH4)HSO4. This salt is the product of the half-neutralization of sulfuric acid by ammonia.Otto RöhmOtto RöhmOtto Karl Julius Röhm (German:; 14 March 1876, Öhringen, Germany – 17 September 1939, Berlin) was one of the founders and a longtime president of the Röhm und Haaschemical company which became later in the USA the Rohm and Haas (today Dow Chemical) and in Germany the Röhm GmbH (today Evonik Degussa). LifeAfter completion of an apprenticeship as pharmacy assistant he started to study pharmacy at the universities of Munich and Tübingen.Hermann StaudingerHermann StaudingerHermann Staudinger (German:; 23 March 1881 – 8 September 1965) was a German organic chemist who demonstrated the existence of macromolecules, which he characterized as polymers. For this work he received the 1953 Nobel Prize in Chemistry. He is also known for his discovery of ketenes and of the Staudinger reaction.Chemical formulaChemical formulaA chemical formula is any of several kinds of notation for expressing the composition and structure of a chemical compound. Chemical formulas use element symbols for the atoms of each chemical element in a compound. There are several conventional types of chemical formula that present different levels of detail.Rohm and HaasRohm and HaasRohm and Haas Company is a US manufacturer of specialty chemicals for end use markets such as building and construction, electronic devices, packaging, household and personal care products. Headquartered in Philadelphia, the company is organized into three business groups of Specialty Materials, Performance Materials and Electronic Materials, and also has two stand-alone businesses of Powder Coatings and Salt.Bernhard TollensBernhard TollensBernhard Christian Gottfried Tollens (30 July 1841 – 31 January 1918) was a German chemist. Life and workTollens attended school at the Gelehrtenschule des Johanneums in Hamburg where he was influenced by his science teacher, Karl Möbius. After graduating in 1857, Tollens started an apprenticeship in pharmacy. He finished in 1862 and began studying chemistry in Göttingen in Wöhler's laboratory, then supervised by Friedrich Konrad Beilstein and Wilhelm Rudolph Fittig.EsterEsterIn chemistry, an ester is a compound derived from an acid (either organic or inorganic) in which the hydrogen atom (H) of at least one acidichydroxyl group (−OH) of that acid is replaced by an organyl group (R′). These compounds contain a distinctive functional group. Analogues derived from oxygen replaced by other chalcogens belong to the ester category as well.MonomerMonomerA monomer ( ; , "one" + , "part") is a molecule that can react together with other monomer molecules to form a larger polymer chain or two- or three-dimensional network in a process called polymerization.IUPAC definitionMonomer molecule: A molecule which can undergo polymerization, thereby contributing constitutional units to the essential structure of a macromolecule.Organic compoundOrganic compoundOrganic compounds are a subclass of chemical compounds of carbon. Little consensus exists among chemists on the exact definition of organic compound; the only universally accepted definition is the quasi-tautological "organic compounds are the subject matter of organic chemistry". Generally, any large chemical compound containing a carbon–hydrogen or carbon–carbon bond is accepted as an organic compound.MacromoleculeMacromoleculeA macromolecule is a "molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass." Polymers, which are often used in many consumer goods, are examples of macromolecules. Common macromolecules are biopolymers (RNA and DNA, proteins, and carbohydrates), polyolefins (polyethylene) and polyamides (nylon).

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