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155721

Sigma-Aldrich

Methacrylic acid

contains 250 ppm MEHQ as inhibitor, 99%

Synonyme(s) :

2-Methacrylic acid, 2-Methylpropenoic acid

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About This Item

Formule linéaire :
H2C=C(CH3)COOH
Numéro CAS:
79-41-4
Poids moléculaire :
86.09
Numéro Beilstein :
1719937
Numéro CE :
201-204-4
Numéro MDL:
MFCD00002651
Code UNSPSC :
12162002
ID de substance PubChem :
24849561
Nomenclature NACRES :
NA.23

Densité de vapeur

>3 (vs air)

Niveau de qualité

200

Pression de vapeur

1 mmHg ( 20 °C)

Pureté

99%

Forme

liquid

Température d'inflammation spontanée

752 °F

Contient

250 ppm MEHQ as inhibitor

Indice de réfraction

n20/D 1.431 (lit.)

pH

2.0-2.2 (20 °C, 100 g/L)

Point d'ébullition

163 °C (lit.)

Pf

12-16 °C (lit.)

Densité

1.015 g/mL at 25 °C (lit.)

Chaîne SMILES 

C=C(C)C(O)=O

InChI

1S/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6)

Clé InChI

CERQOIWHTDAKMF-UHFFFAOYSA-N

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Description générale

Methacrylic acid (MAA) is an organic compound, colorless, viscous liquid. It is a monofunctional methacrylayte monomer. It is soluble in warm water and miscible in most organic solvents. MAA is used as a starting material for the production of its esters, especially methyl methacrylate and poly methyl methacrylate (PMMA).

Application

MAA is used to synthesize poly(methacrylic acid)-g-poly(ε-caprolactone) copolymers, polymeric blends with PMMA and hydroxyethyl methacrylate (HEMA)-MAA hydrogels.

Pictogrammes

Skull and crossbonesCorrosion
GHS06,GHS05

Mention d'avertissement

Danger

Mentions de danger

H302 + H332,H311,H314,H335

Classification des risques

Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3

Organes cibles

Respiratory system

Code de la classe de stockage

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

152.6 °F - closed cup

Point d'éclair (°C)

67 °C - closed cup

Équipement de protection individuelle

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Certificats d'analyse (COA)

Lot/Batch Number
STBK6097
MKCQ4607
STBK4294
MKCP8688
MKCP6970

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Reversible Addition Fragmentation Chain Transfer
(RAFT) Polymerization
Moad G, et al.
Material Matters, 5(1) (2010)
Synthesis of graft copolymers of poly(methacrylic acid)-g-poly(?-caprolactone) by coupling ROP and RAFT polymerizations
Kiehl J, et al.
Polymer, 53(3), 694-700 (2012)
Xi Yu et al.
Food chemistry, 299, 125144-125144 (2019-07-20)
Magnetic nanoparticles were synthesised to extract Sudan dyes from chilli powders. The adsorbents used were magnetic ferroferric oxide nanoparticles coated with polystyrene. The extraction procedures for Sudan dyes comprised liquid-solid extraction and magnetic solid phase extraction. The conditions were optimised
Thomas J Dursch et al.
Biomaterials, 35(2), 620-629 (2013-10-24)
Two-photon confocal microscopy and back extraction with UV/Vis-absorption spectrophotometry quantify equilibrium partition coefficients, k, for six prototypical drugs in five soft-contact-lens-material hydrogels over a range of water contents from 40 to 92%. Partition coefficients were obtained for acetazolamide, caffeine, hydrocortisone
Macro-micro relationship in nanostructured functional
Composites
Zanotto A, et al.
Express Polymer Letters, 6(5), 410-416 (2012)
Afficher tous les articles scientifiques apparentés

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Continuous Flow Manufacturing for Monomer Synthesis

The manufacture of monomers for use in ophthalmic applications is driven by the need for higher purity, improved reliability of manufacturing supply, but ultimately by the need for the increased comfort, convenience, and safety of contact lens wearers. Daily wear contact lenses have the potential to fill this need for many customers; however, their widespread use is constrained by higher costs compared to weekly- or monthly-based lenses. New approaches that improve cost structure and result in higher quality raw materials are needed to help make contact lenses more affordable and accelerate growth of the contact lens market.

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