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ChemicalBook--->CAS DataBase List--->9003-21-8

9003-21-8

9003-21-8 Structure

9003-21-8 Structure
IdentificationBack Directory
[Name]

POLY(METHYL ACRYLATE)
[CAS]

9003-21-8
[Synonyms]

Polymethacrylates
METHYL ACRYLATE LATEX
METHYL ACRYLATE RESIN
POLY(METHYL ACRYLATE)
Poly(methyleacrylate)
Polymethyl-acrylate paste
Methylacrylatehomopolymer
Microparticles based on PMAA
Polymethyl methacrylate,color
poly(methyl acrylate) solution
Polymethyl methacrylate,aero grade
poly(methyl acrylate) macromolecule
2-Propenoicacid,methylester,homopolymer
solutionintolueneaveragemwca.40000(gpc)
Polymethyl methacrylate,industrial grade
Microparticles based on poly(methacrylic acid)
POLY(METHYL ACRYLATE), SECONDARY STANDAR D (TOLUENE)
Poly(methyl acrylate) solution average Mw ~40,000 by GPC
POLY(METHYL ACRYLATE), SOLUTION IN TOLUE NE, AVERAGE MW CA. 40,000 (GPC
[EINECS(EC#)]

203-625-9
[Molecular Formula]

(C4H6O2)x
[MDL Number]

MFCD00084441
[MOL File]

9003-21-8.mol
[Molecular Weight]

86.09
Chemical PropertiesBack Directory
[Appearance]

clear liquid
[Boiling point ]

110 °C
[density ]

1.22 g/mL at 25 °C
[Tg]

5
[vapor density ]

>1 (vs air)
[refractive index ]

n20/D 1.494
[Fp ]

40 °F
[storage temp. ]

Flammables area
[form ]

Liquid
[color ]

Clear
[EPA Substance Registry System]

2-Propenoic acid, methyl ester, homopolymer (9003-21-8)
Hazard InformationBack Directory
[Chemical Properties]

clear liquid
[Definition]

ChEBI: An acrylate macromolecule composed of repeating methoxycarbonylethylene units.
[Uses]

PMA/methylamine borane (MeAB) composites, prepared by solution blending process finds uses as a hydrogen storage material with better dehydrogenation property compared to MeAB.
[Preparation]

The structure of methyl acrylate is H2C=CH-COOCH3. The monomer used to prepare poly(methyl acrylate) is produced by the oxidation of propylene. The resin is made by free-radical polymerization initiated by peroxide catalysts and has the following formula:
Poly(methyl acrylate)  structure
Poly(methyl acrylate) resins vary from soft, elastic, film-forming materials to hard plastics.
[Production Methods]

Prepared by the polymerization of acrylic and methacrylic acids or their esters, e.g. butyl ester or dimethylaminoethyl ester
[Pharmaceutical Applications]

Polymethacrylates are primarily used in oral capsule and tablet formulations as film-coating agents.(1–21) Depending on the type of polymer used, films of different solubility characteristics can be produced;
Eudragit E is used as a plain or insulating film former. It is soluble in gastric fluid below pH 5. In contrast, Eudragit L, S and FS types are used as enteric coating agents because they are resistant to gastric fluid. Different types of enteric coatings are soluble at different pH values: e.g. Eudragit L is soluble at pH > 6 whereas Eudragit S and FS are soluble at pH > 7. The S grade is generally used for coating tablets, while the flexible FS 30 D dispersion is preferred for coating particles.
Eudragit RL, RS, NE 30D, NE 40D, andNM30D are used to form water-insoluble film coats for sustained-release products. Eudragit RL films are more permeable than those of Eudragit RS, and films of varying permeability can be obtained by mixing the two types together. The neutral Eudragit NE/NM grades do not have functional ionic groups. They swell in aqueous media independently of pH without dissolving.
Eudragit L 30 D-55 is used as an enteric coating film former for solid-dosage forms. The coating is resistant to gastric juice but dissolves readily at above pH 5.5.
Eudragit L 100-55 is an alternative to Eudragit L 30 D-55. It is commercially available as a redispersible powder.
Kollicoat MAE 100 P, Acryl-EZE and Acryl-EZE MP are also commercially available as redispersible powder forms, which are designed for enteric coating of tablets or beads.
Eastacryl 30 D and Kollicoat MAE 30 DP are aqueous dispersions of methacrylic acid–ethyl acrylate copolymers. They are also used as enteric coatings for solid-dosage forms. Polymethacrylates are also used as binders in both aqueous and organic wet-granulation processes. Larger quantities (5–20%) of dry polymer are used to control the release of an active substance from a tablet matrix. Solid polymers may be used in directcompression processes in quantities of 10–50%.
Polymethacrylate polymers may additionally be used to form the matrix layers of transdermal delivery systems and have also been used to prepare novel gel formulations for rectal administration.
[Safety]

Polymethacrylate copolymers are widely used as film-coating materials in oral pharmaceutical formulations. They are also used in topical formulations and are generally regarded as nontoxic and nonirritant materials.
Based on relevant chronic oral toxicity studies in rats and conventionally calculated with a safety factor of 100, a daily intake of 2–200 mg/kg body-weight depending on the grade of Eudragit may be regarded as essentially safe in humans.
[Solubility in organics]

Aromatic hydrocarbons, esters, ketones, THF
[storage]

Dry powder polymer forms are stable at temperatures less than 30°C. Above this temperature, powders tend to form clumps, although this does not affect the quality of the substance and the clumps can be readily broken up. Dry powders are stable for at least 3 years if stored in a tightly closed container at less than 30°C.
Dispersions are sensitive to extreme temperatures and phase separation occurs below 0°C. Dispersions should therefore be stored at temperatures between 5 and 25°C and are stable for at least 18 months after shipping from the manufacturer’s warehouse if stored in a tightly closed container at the above conditions.
[Purification Methods]

Precipitate it from a 2% solution in acetone by addition of water.
[Incompatibilities]

Incompatibilities occur with certain polymethacrylate dispersions depending upon the ionic and physical properties of the polymer and solvent. For example, coagulation may be caused by soluble electrolytes, pH changes, some organic solvents, and extremes of temperature. For example, dispersions of Eudragit L 30 D, RL 30 D, L 100-55, and RS 30 D are incompatible with magnesium stearate. Eastacryl 30 D, Kollicoat MAE 100 P, and Kollicoat MAE 30 DP are also incompatible with magnesium stearate.
Interactions between polymethacrylates and some drugs can occur, although solid polymethacrylates and organic solutions are generally more compatible than aqueous dispersions.
[Regulatory Status]

Included in the FDA Inactive Ingredients Database (oral capsules and tablets). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.
Safety DataBack Directory
[Hazard Codes ]

F,Xn
[Risk Statements ]

11-38-48/20-63-65-67
[Safety Statements ]

36/37-46-62-16
[RIDADR ]

UN 1294 3/PG 2
[WGK Germany ]

2
[Autoignition Temperature]

~896 °F
[TSCA ]

TSCA listed
[HS Code ]

32082010
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Ammonium persulfate
Spectrum DetailBack Directory
[Spectrum Detail]

POLY(METHYL ACRYLATE)(9003-21-8)FT-IR
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