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79-41-4

79-41-4 Structure

79-41-4 Structure
IdentificationMore
[Name]

Methacrylic acid
[CAS]

79-41-4
[Synonyms]

2-METHACRYLIC ACID
2-METHYLACRYLIC ACID
2-METHYLPROPENOIC ACID
MAA
METHACRYLIC ACID
PROPYLENE-2-CARBOXYLIC ACID
RARECHEM AL BO 0090
.alpha.-Methylacrylicacid
2-Methyl-2-propenoic acid
2-methyl-2-Propenoicacid
2-Methyl-2-propensαure
2-methyl-acrylicaci
2-methylene-propionicaci
2-methylenepropionicacid
2-Methylpropencicacid
2-Propenoicacid,2-methyl-
acidemethacrylique
acidemethacrylique(french)
acidometacrilico
Acrylic acid, 2-methyl-
[EINECS(EC#)]

201-204-4
[Molecular Formula]

C4H6O2
[MDL Number]

MFCD00002651
[Molecular Weight]

86.09
[MOL File]

79-41-4.mol
Chemical PropertiesBack Directory
[Appearance]

colourless liquid or crystals with an unpleasant odour.
[Appearance]

Methacrylic acid is a colorless liquid.
[mp ]

16 °C
[bp ]

163 °C(lit.)
[density ]

1.015 g/mL at 25 °C(lit.)
[vapor density ]

>3 (vs air)
[vapor pressure ]

1 mm Hg ( 20 °C)
[refractive index ]

n20/D 1.431(lit.)
[Fp ]

170 °F
[storage temp. ]

Indoors
[Stability:]

May be stabilized by the addition of MEHQ (Hydroquinone methyl ether, ca. 250 ppm) or hydroquinone. In the absence of a stabilizer this material will readily polymerize. Combustible. Incompatible with strong oxidizing agents, hydrochloric acid.
[Water Solubility ]

9.7 g/100 mL (20 ºC)
[Merck ]

14,5941
[BRN ]

1719937
[Uses]

Monomer for large-volume resins and polymers, organic synthesis. Many of the polymers are based on esters of the acid, as the methyl, butyl, or isobutyl esters.
[CAS DataBase Reference]

79-41-4(CAS DataBase Reference)
[NIST Chemistry Reference]

2-Propenoic acid, 2-methyl-(79-41-4)
[EPA Substance Registry System]

79-41-4(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

C
[Risk Statements ]

R21/22:Harmful in contact with skin and if swallowed .
R35:Causes severe burns.
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
[RIDADR ]

UN 2531 8/PG 2
[WGK Germany ]

1
[RTECS ]

OZ2975000
[HazardClass ]

8
[PackingGroup ]

II
[HS Code ]

29161300
[Safety Profile]

Poison by intraperitoneal route. Moderately toxic by ingestion and skin contact. Corrosive to skin, eyes, and mucous membranes. Mutation data reported. Flammable when exposed to heat, flame, or oxidizers. A storage hazard; exothermic polymerization may occur spontaneously. To fight fire, use alcohol foam, spray, mist, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
[Hazardous Substances Data]

79-41-4(Hazardous Substances Data)
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Sulfuric acid -->Sodium cyanide-->ISOBUTYLENE-->HYDROGEN CYANIDE-->Acetone cyanohydrin -->ISOBUTANE-->Methacrylonitrile-->methacrylammonium hydrogen sulphate -->Methyl 2-hydroxyisobutyrate
[Preparation Products]

Carbomer 940-->Isobutyric acid-->2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate-->DOWEX(R) 1X8-->Isobutyryl chloride-->Styrene-acrylic latex-->EAM resin adhesive modified with diisocyanate for orthodontias-->CC-2SH adhesive composite used in anterior teeth-->Butyl methacrylate-->diagnosis latex microsphors combining anti fetoprotein-->POLY(METHYL METHACRYLATE)-->optical plastics based on coplymer of diene macromolecule-->Methacrylamide-->plastic optical fiber-->amphoteric polyacrylamide-->2-BROMOPROPENE-->2-Hydroxyethyl methacrylate-->impregnanting agent for leather-->Glycidyl methacrylate-->modified filling agent SBR-->carboxyl type cation exchange resin-->Ethyl methacrylate-->methylacrylate polycyclic norbornene and polymethyl methacrylate copolymer (ARTON)-->thickening agent PAS-->Isobutyl methacrylate-->THERMOPLASTIC ACRYLIC RESIN-->2-Hydroxypropyl methacrylate -->transparenting agent for paper-->6731 acrylic vibration damping coating-->2-(Diethylamino)ethyl methacrylate-->5,5-dibutyldihydrofuran-2(3H)-one -->Ethylene dimethacrylate
Hazard InformationBack Directory
[General Description]

A clear colorless liquid (or low-melting solid) with a pungent odor. Corrosive to metals and tissue. Flash point 170°F. Melting point 61°F. May polymerize exothermically if heated or contaminated. If the polymerization takes place inside a container, the container may rupture violently. Less dense than water. Vapors heavier than air. Used to make plastics.
[Reactivity Profile]

METHACRYLIC ACID(79-41-4) reacts with strong oxidizing agents. Presents a storage hazard: violent exothermic polymerizations leading to explosion can occur spontaneously, particularly at low inhibitor or stabilizer concentrations [Anon., CISHC Chem. Safety Summ., 1979, 50, p. 34; Bond, J., Loss Prev. Bull., 1991, 101, p. 1].
[Air & Water Reactions]

Soluble in water.
[Hazard]

Toxic material. Strong irritant to eyes and skin. Questionable carcinogen.
[Health Hazard]

INHALATION: Severe irritation to respiratory tract. EYES: Short contact can cause severe damage. SKIN: Causes severe irritation and burns. Ingestion: High hazard-may cause death or permanent injury on short exposure to small quantities. OTHER: May affect blood pressure temporarily.
[Potential Exposure]

Methacrylic acid is used in preparation of methacrylates and carboxylated polymers; in the production of the material or its alkyl esters, as monomers or comonomers for synthetic resins for the production of plastic sheets, moldings, and fibers.
[First aid]

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. If victim is conscious, administer water or milk. Do not induce vomiting. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy.
[Shipping]

UN2531 Methacrylic acid, stabilized, Hazard class: 8; Labels: 8-Corrosive material.
[Incompatibilities]

Vapor may form explosive mixture with air. A reducing agent; incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Aqueous solution is strongly acidic: incompatible with strong acids; caustics, ammonia, amines, isocyanates, alkylene oxides; epichlorohydrin. Will polymerize readily from heating above 59F/15C, or due to the presence of light, oxidizers (e.g., peroxides); or in the presence of traces of hydrochloric acid, with fire or explosion hazard. Attacks metals. Note: Typically contains 100 ppm of monomethyl ether hydroquinone (150-76-5) as an inhibitor to prevent polymerization
[Waste Disposal]

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

methacrylic acid(79-41-4).msds
Spectrum DetailBack Directory
[Spectrum Detail]

Methacrylic acid(79-41-4)MS
Methacrylic acid(79-41-4)IR2
Methacrylic acid(79-41-4)13CNMR
Methacrylic acid(79-41-4)IR1
Methacrylic acid(79-41-4)Raman
Methacrylic acid(79-41-4)1HNMR
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

Methacrylicacid,stabilized,extrapure,99.5%(79-41-4)
[Alfa Aesar]

Methacrylic acid, 99+%, stab. with 250ppm 4-methoxyphenol(79-41-4)
[Sigma Aldrich]

79-41-4(sigmaaldrich)
[TCI AMERICA]

Methacrylic Acid  (stabilized with MEHQ),>99.0%(GC)(79-41-4)
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