Methacrylic acid (2-Methyl-2-propenoic acid)

Chemical natures

Methacrylic acid, yakapfupikiswa MAA, ndeye organic compound.Iyi isina ruvara, viscous fluid icarboxylic acid ine acrid inonhuwa isingafadzi.Inonyungudika mumvura inodziya uye inosanganiswa nemimwe organic solvents.Methacrylic acid inogadzirwa mumaindasitiri pamwero mukuru seanotangira esters ayo, kunyanya methyl methacrylate (MMA) uye poly(methyl methacrylate) (PMMA).Iwo methacrylates ane akawanda mashandisiro, kunyanya mukugadzira mapolymer ane mazita ekutengesa akadai saLucite nePlexiglas.MAA inowanzoitika mune zvishoma mumafuta eRoma chamomile.

Applications

Methacrylic acid inoshandiswa mukugadzira methacrylate resins uye mapurasitiki.Inoshandiswa seMonomer kune yakakura-vhoriyamu resins uye mapolymers, organic synthesis.Mazhinji emapolymers anobva pane esters yeasidhi, semethyl, butyl, kana isobutyl esters.Methacrylic acid uye methacrylate esters anoshandiswa kugadzira akawanda mapolymers [→ Polyacrylamides uye Poly(Acrylic Acids), → Polymethacrylates].Poly(methyl methacrylate) ndiyo yekutanga polima muchikamu ichi, uye inopa mvura-yakajeka, mapurasitiki akaomarara anoshandiswa mupepa fomu mukupenya, zviratidzo, zviratidziro, uye mapaneru ekuvheneka.

Zvenyamaform

Zvakajekamvura

Hazard Kirasi

8

Sherufu hupenyu

Zvinoenderana neruzivo rwedu, chigadzirwa chinogona kuchengetwa kwemwedzi gumi nemaviri kubva pazuva rekutumirwa kana chakachengetwa mumidziyo yakavharwa zvakasimba, yakachengetedzwa kubva kuchiedza nekupisa uye ichichengetwa patembiricha iri pakati pe5 - 30 ° C.

Typical properties

Melting point

12-16 °C (lit.)

Boiling point

163 °C (lit.)

density

1.015 g/mL pa25 °C (lit.)

mhute density

>3 (vs mhepo)

mhute pressure

1 mm Hg (20 °C)

refractive index

n20/D 1.431(lit.)

Fp

170 °F

kuchengetedza temp.

Chengetedza pa +15°C kusvika +25°C.