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

Dabeecadaha kiimikada

Methacrylic acid, oo loo soo gaabiyo MAA, waa iskudhis organic ah.Dareeraha aan midab lahayn, viscouska ah waa karboksilic acid oo leh ur aan fiicneyn.Waxay ku milmi kartaa biyo diirran waxayna ku dhex milmi kartaa inta badan dareerayaasha organic.Methacrylic acid waxaa loo soo saaraa si warshadaysan oo baaxad weyn iyadoo horudhac u ah esters-keeda, gaar ahaan methyl methacrylate (MMA) iyo poly (methyl methacrylate) (PMMA).Methacrylates-yadu waxay leeyihiin adeegsiyo badan, gaar ahaan soo saarista polymers-ka ee leh magacyo ganacsi sida Lucite iyo Plexiglas.MAA waxay si dabiici ah ugu dhacdaa xaddi yar oo saliidda chamomile Roman ah.

Codsiyada

Methacrylic acid waxaa loo isticmaalaa soo saarista xabagta methacrylate iyo balaastikada.Waxaa loo isticmaalaa sida Monomer for resins mugga weyn iyo polymers, synthesis organic.Qaar badan oo ka mid ah polymers-yada waxay ku saleysan yihiin esters of acid, sida methyl, butyl, ama isobutyl esters.Methacrylic acid iyo methacrylate esters ayaa loo isticmaalaa si loogu diyaariyo noocyo badan oo polymers ah [→ Polyacrylamides iyo Poly(Acrylic Acids), → Polymethacrylates].Poly (methyl methacrylate) waa polymer-ka aasaasiga ah ee qaybtan, waxayna bixisa biyo cad, balaastiig adag oo loo isticmaalo qaabka xaashida dhaldhalaalka, calaamadaha, bandhigyada, iyo muraayadaha iftiinka.

Jireedform

Caddareere

Heerka khatarta

8

Nolosha shelf

Marka loo eego waayo-aragnimadayada, badeecada waxaa lagu kaydin karaa 12 bilood laga bilaabo taariikhda dhalmada haddii lagu hayo weel si adag loo xidhay, laga ilaaliyo iftiinka iyo kulaylka laguna kaydiyo heerkul u dhexeeya 5 - 30 ° C.

Tguryaha caadiga ah

barta dhalaalaysa

12-16 °C (iftiin)

Barta karkarinta

163 °C ( shidan)

cufnaanta

1.015 g/ml at 25°C (shir leh)

cufnaanta uumiga

>3 ( vs hawada)

cadaadiska uumiga

1 mm Hg (20 °C)

index refractive

n20/D 1.431 (lit.)

Fp

170 °F

heerkulka kaydinta.

Ku kaydi heerkulka +15°C ilaa +25°C.