Methacrylic acid
Methacrylic Acid, abbreviated MAA, is an organic compound. This colorless, viscous liquid is a carboxylic acid with an acrid unpleasant odor. It is soluble in warm water and miscible with most organic solvents. Methacrylic acid is produced industrially on a large scale as a precursor to its esters, especially methyl methacrylate (MMA) and poly(methyl methacrylate) (PMMA). The methacrylates have numerous uses, most notably in the manufacture of polymers with trade names such as Lucite and Plexiglas. MAA occurs naturally in small amounts in the oil of Roman chamomile. Methacrylic acid is mainly used as a precursor to its esters.
- Synonyms: 2-Methylpropenoic acid, MAA, methacrylic acid, GMAA
- CAS #: 79-41-4
- EC Number: 201-204-4
- Molar Mass: 86.09 g/mol
- Chemical Formula: CH₂C(CH₃)COOH
- Hill Formula: C₄H₆O₂
- Packaging: 200kg/UN Plastic Drum Or 1000kg/IBC Drum Or ISOTANK
Description
Glacial Methacrylic Acid (GMAA)
CAS: 79-41-4
Glacial Methacrylic Acid (GMAA) is an with the molecular formula C4H6O2, CAS 79-41-4.
GMAA is a clear, colorless liquid at room temperature with a pungent, irritating odor. It is soluble in water and most organic solvents. It is a versatile chemical which is used as an intermediate in the manufacture of methacrylic acid esters. Glacial methacrylic acid polymerizes readily. It is a carboxylic acid which may be converted by conventional methods to methacrylates.
Glacial Methacrylic Acid Chemical Structure Composition.
METHACRYLIC ACID 99% (For Synthesis)
(2-Methyl Propanoic Acid)
| Article No | M-05840 | ||
| CAS No | 79-41-4 | ||
| HSN Code | 29161310 | ||
| Purity | 99% | ||
| Grade | For Synthesis | ||
| Molecular Formula | C4H6O2 | ||
| Molecular Weight | 86.09 | ||
| Shelf Life | 5 years | ||
Methacrylic Acid
Product Description
CAS No.: 79-41-4
Synonyms: MAA, 2-methyl-2-propenoic acid, α-Methacrylic acid, 2-Methylacrylic acid, 2-Methylpropenoic acid, 2-methylpropenoic acid, MAA
Methacrylic acid is mainly used as a precursor to its esters.
Description: A clear colourless liquid
Assay: Min. 99.0%
Density: (20°/4°) 1.013 – 1.015
Melting Point: [°C] 12-16°C
Solubility in water: Insoluble in water
Substance name:methacrylic acid, stabilized
Trade name:Methacrylic Acid
EC no:201-204-4
CAS no:79-41-4
HS code:29161300
Formula:C4H6O2
Synonyms:2-methacrylic acid / 2-methyl acrylic acid / 2-methyl-2-propenoic acid / 2-methylene propionic acid / 2-propenoic acid, 2-methyl- / alpha-methacrylic acid / alpha-methyl acrylic acid / alphamethyl propenoic acid / methacrylic acid / Methacrylic acid, stabilized / methyl acrylic acid)
Glacial Methacrylic Acid (GMAA)
Formula: C4H6O2
Synonyms: 2-Methacrylic acid; 2-Methylpropenoic acid
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)
TYPICAL SPECIFICATIONS
| MARKET: | Acrylate Monomers, Featured Stocked Products |
|---|---|
| CLASS: | Acids & Anhydrides |
| MOLECULAR WEIGHT: | 86.09 |
| APPEARANCE: | Colorless liquid |
| DENSITY: | 1.015 g/cm3 |
| REFRACTIVE INDEX: | 1.431 |
| ASSAY: | 99% |
| INHIBITOR (MEHQ): | 200 – 300 ppm |
| ODOR: | acrid, repulsive odor |
| BOILING POINT: | 163 °C |
| MELTING POINT: | 12 – 16 °C |
Uses
Glacial methacrylic acid can be used in the production of homopolymers and copolymers. GMAA allows to decrease the softening temperature of copolymers and reduces hardness. It provides improved adhesion and flexibility in polymers for paints and adhesives.
GMAA is used in coatings application, ion exchange, flocculants, soil improvers and auxiliary products for the leather and textile industry.
In coatings GMAA offers hardness, flexibility, clarity, color compatibility, toughness, internal plasticization and weatherability.
Junyuan Petroleum Group is one of the largest solvent and chemical manufacturers in China.
Junyuan Petroleum Group is handling the storage, transport, export & import formalities of Gllacial Methacrylic Acid globally.
MAA is used for various esters
MAA is manufactured by dehydrating and hydrolyzing intermediates in the MMA production process. MAA is a useful material for various esters, lubricant additives and concrete admixtures, among other applications.
Applications
Esters: Additive for lubricants
Admixture for concrete: Paints, emulsions
Latex: DFR (dry film resist/photopolymers)
Standard grades and properties
Form
Liquid
Color
Colorless
Odor
Pungent odor
pH
No data
Melting point
15ºC
Boiling point
161ºC
Flash point
73ºC (tag closed cup test)
Flammability limits
Lower: 1.6 vol %. Upper: 8.8 vol %
Vapor pressure
133.3 Pa ( 1mmHg) (25.5ºC)
1333 Pa (10mmHg) (60.6ºC)
Vapor density
No data
Specific gravity
1.015 (20ºC)
Water solubility
Highly soluble
Partition coefficient: n-octanol/water
Log Pow=0.93 (actual measurement)
Spontaneous combustion temperature
No data
Electrical conductivity
23.3pS/m (30ºC)
Refractive index
1.4320 (20ºC)
Viscosity
1.30×10-3Pa･s (20ºC)
| CAS Number | 79-41-4 |
| Usage/Application | Industrial |
| Physical State | Liquid |
| Grade Standard | Technical Grade |
| Boiling Point | 161 Degree C |
| Formula | C4H6O2 |
| Molar Mass | 86.06 g/mol |
| Density | 1.02 g/cm3 |
| Melting Point | 15 Degree C |
| Purity | 99% |
| Minimum Order Quantity | 200 Kg |
Methacrylic acid, 99%, stab. with 100-250ppm hydroquinone or 4-methoxyphenol
Chemical Properties
Applications
Methacrylic acid is used as a monomer to prepare polymers. It acts a precursor for the preparation methyl methacrylate, N-substituted methacryl amides, methacrylamide, N-substituted methacryl amides and acryloyl chloride. It enhances the adhesion of surface coatings and adhesives. It acts as auxiliaries for the textile industry. It is involved in the preparation of poly(methacrylic acid)/montmorillonite nanocomposites, which finds application in the leather tanning process.
Notes
GHS Hazard and Precautionary Statements
Hazard Statements: H227-H302+H332-H311-H314-H335
Combustible liquid. Harmful if swallowed. Harmful if inhaled. Toxic in contact with skin. Causes severe skin burns and eye damage. May cause respiratory irritation.
Precautionary Statements: P210-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P362+P364-P403+P233-P405-P501c
Keep away from heat/sparks/open flames/hot surfaces. – No smoking. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Rinse mouth. Do NOT induce vomiting. Take off contaminated clothing and wash before reuse. And wash it before reuse. Store in a well-ventilated place. Keep container tightly closed. Store locked up. Dispose of contents/ container to an approved waste disposal plant
Other References
Methacrylic Acid (MAA)
Methacrylic Acid (MAA) is a functional monomer, an unsaturated monocarboxylic acid. Methacrylic Acid (MAA) reacts as a vinyl compound and as a carboxylic acid. Methacrylic Acid (MAA) easily undergoes polymerization and addition reactions. The copolymers of Methacrylic Acid (MAA) can be prepared with acrylic and methacrylic esters, acrylonitrile, maleic acid esters, vinyl acetate, vinyl chloride, vinylidene chloride, styrene, butadiene, ethylene, and other monomers.
Product Type: Methacrylate Monomer
Features & Benefits:
- Adhesive ability
- Hydrophilic
- Water solubility
- Required rheological properties
Applications areas:
- Polymethacrylic Acid (PMAA) and Methacrylic Acid (MAA) copolymers are used in pulp and paper, paint and varnish, textile, medicine, in the petrochemical field and oil production as binders, film-forming agents, thickeners, adhesives, drilling reagents, dressing preparations, etc.
- Methacrylic Acid (MAA) copolymers are used in the manufacture of ion exchange resins and superabsorbents.
- Methacrylic Acid (MAA) is used to synthesize its esters and salts.
It is applied in the production of:
- Coatings
- Pulp & Paper
- Paint & Varnishes
- Adhesives & Sealants
- Leather & Textile
- Film-forming agents
- Thickeners
- Lubricants
- Materials used in medicine
- Plastics
- Oilfield
- Drilling agents
- Dressing preparations
Chemical Properties:
-
Puritymin 99.9%
-
Acid Valuemin 99.9%
-
Water contentmax 0.05%
-
Color APHAmax 30
Physical Properties:
-
AppearanceClear, colorless
-
Physical formLiquid at >13°C
-
OdorPungent
-
Molecular weight86 g/mol
-
Density1.02 g/cm3 at 20°C
-
Boiling Point163 °C
-
Freezing Point16°C
-
Flash point68 °C
-
Melting Point16 °C
-
Viscosity1.34cp at 25 °C
-
Vapor Point133.3Pa 1mmHg at 25.5 °C
-
pHNot reported
Storage & Handling:
Methacrylic acid (MAA) is stored in the manufacturer’s packaging (in stainless steel, glass, aluminum or polyethylene containers) in a dry, cool, ventilated room at a sufficient distance from heat or ignition sources.
Guaranteed shelf life – 12 months. Joint storage with flammable and combustible substances, substances having oxidizing properties is not allowed. During transportation, the temperature of methacrylic acid should be maintained in the range of 15-25°C. Methacrylic acid, packed in barrels, is transported in covered wagons, cars that provide storage conditions along the route. At temperatures above 130°C, transportation of acrylic acid in barrels by open road transport is allowed, provided that the product is protected from exposure to sunlight and precipitation. The packaging of barrels with methacrylic acid is carried out on flat pallets. Means of fastening pallets – steel wire, steel or polymer tape, manufactured according to the normative-technical documentation, approved in the prescribed manner. Barrels should be filled to 0.9 volumes and sealed. Bulk methacrylic acid in railway tanks is transported in accordance with the rules for the transport of goods operating on this type of transport. Methacrylic acid (MAA) poured into tank containers, is transported by rail, road, and sea in accordance with the rules for the transport of goods operating on this type of transport.
SafetyMethacrylic acid (MAA) is a combustible substance. In case of fire emits irritating or toxic fumes (or gases). At temperatures above 77°C explosive mixtures of vapor with air may form. Hazard class 8. MPC 10 mg/m3. The flash point is 76.6-77.7°C. The explosive limits is 1.6-8.8% (vol.) in air.
NoteThe data presented here are based on current knowledge and experience. Given the many factors that can affect the processing and use of the product, these data do not free consumers from the need to conduct their own tests and samples. Also, these data do not imply a guarantee of any specific properties or suitability of the product for a particular application. Any descriptions, drawings, photographs, data, ratios, weights, etc. presented here. subject to change without prior notice and do not constitute the contractual quality of the product. The end-user of the product is required to comply with all property rights and existing laws, as well as legal standards.
Key literature references and sources for date
- Guideline for Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
- Regulated Chemicals info. produced by the National Institute of Technology and Evaluation (Japan).
- EU European Chemicals Bureau (ECB): International Uniform Chemical Information Database (IUCLID).
- Joint Assessment of Commodity Chemicals, Methyl methacrylate No. 30, European Centre for Ecotoxicologyand Toxicology of Chemicals, Brussels (1995) (ECETOC).
Delivery conditions
It can be shipped in bulk by ISO tank-container (20TO) or in drums of 200KG of each (16TO).
