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

Ubume bekhemikhali

I-Methacrylic acid, i-MAA efinyeziweyo, i-organic compound.Olulwelo lungenambala, lune-viscous yi-asidi ye-carboxylic enevumba elibi elibi.Iyanyibilika kumanzi ashushu kwaye iyaxubana kunye nezinyibilikisi ezininzi eziphilayo.I-asidi ye-Methacrylic iveliswa kushishino kumlinganiselo omkhulu njenge-precursor kwii-esters zayo, ngakumbi i-methyl methacrylate (MMA) kunye ne-poly(methyl methacrylate) (PMMA).I-methacrylates inosetyenziso oluninzi, ngakumbi ekwenziweni kweepholima ezinamagama orhwebo afana noLucite kunye nePlexiglas.I-MAA yenzeka ngokwemvelo ngamanani amancinci kwioli ye-chamomile yaseRoma.

Usetyenziso

I-Methacrylic acid isetyenziselwa ukwenziwa kweereyini ze-methacrylate kunye neeplastiki.Isetyenziswa njenge-Monomer yeresin ezinomthamo omkhulu kunye neepolymers, i-organic synthesis.Uninzi lweepolymers zisekelwe kwi-esters ye-asidi, njenge-methyl, i-butyl, okanye i-isobutyl esters.I-Methacrylic acid kunye ne-methacrylate esters zisetyenziselwa ukulungisa uluhlu olubanzi lweepolymers [→ Polyacrylamides kunye nePoly(Acrylic Acids), → Polymethacrylates].I-Poly(methyl methacrylate) yipolymer ephambili kolu didi, kwaye ibonelela ngamanzi acacileyo, iiplastiki eziqinileyo ezisetyenziswa kwifom yephepha kwi-glazing, imiqondiso, imiboniso, kunye neepaneli zokukhanyisa.

Ngokwasemzimbeniform

Cacileyoulwelo

IKlasi yeeNgozi

8

Beka ubomi kwishelufa

Ngokwamava ethu, imveliso inokugcinwa kwiinyanga ezili-12 ukusuka kumhla wokuhanjiswa ukuba igcinwe kwizikhongozeli ezivaliweyo, zikhuselwe ekukhanyeni nasekufudumaleni kwaye zigcinwe kumaqondo obushushu aphakathi kwe-5 - 30 ° C.

Tiipropathi ezingokomfanekiso

Indawo yokunyibilika

12-16 °C (lit.)

Indawo yokubilisa

163 °C (lit.)

ukuxinana

1.015 g/mL ku-25 °C (lit.)

ukuxinana komphunga

>3 (vs umoya)

uxinzelelo lomphunga

1 mm Hg ( 20 °C)

isalathiso se-refractive

n20/D 1.431(lit.)

Fp

170 °F

ixesha lokugcina.

Gcina ku +15°C ukuya +25°C.