Name | Methacrylic acid |
Synonyms | Methacrylic acid Methlacrylic Acid Methylacrylic Acid 2-Methylacrylic acid α-Methylacrylic acid 2-Methylpropenoic acid 2-methyl-2-Propenoicacid 2-Methyl-2-propenoic acid .alpha.-Methylacrylicacid Methacrylic acid, stabilized, extra pure Methacrylic Acid, Stab. With 250Ppm 4-Methoxyphenol |
CAS | 79-41-4 |
EINECS | 201-204-4 |
InChI | InChI=1/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6) |
InChIKey | CERQOIWHTDAKMF-UHFFFAOYSA-N |
Molecular Formula | C4H6O2 |
Molar Mass | 86.09 |
Density | 1.015 g/mL at 25 °C (lit.) |
Melting Point | 12-16 °C (lit.) |
Boling Point | 163 °C (lit.) |
Flash Point | 170°F |
Water Solubility | 9.7 g/100 mL (20 ºC) |
Vapor Presure | 1 mm Hg ( 20 °C) |
Vapor Density | >3 (vs air) |
Appearance | Liquid |
Color | Clear |
Odor | Repulsive |
Exposure Limit | TLV-TWA 20 ppm (~70 mg/m3) (ACGIH). |
Merck | 14,5941 |
BRN | 1719937 |
pKa | pK1:4.66 (25°C) |
PH | 2.0-2.2 (100g/l, H2O, 20℃) |
Storage Condition | Store at +15°C to +25°C. |
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. |
Sensitive | Moisture & Light Sensitive |
Explosive Limit | 1.6-8.7%(V) |
Refractive Index | n20/D 1.431(lit.) |
Physical and Chemical Properties | Character: colorless transparent liquid at room temperature. melting point 14 ℃ boiling point 159~163 ℃ relative density 1.0153 refractive index 1.4314 flash point 77 ℃ solubility, ethanol and most organic solvents. |
Use | Used in the manufacture of coatings, insulating materials, adhesives and ion exchange resins |
Hazard Symbols | C - Corrosive |
Risk Codes | R21/22 - Harmful in contact with skin and if swallowed. R35 - Causes severe burns R37 - Irritating to the respiratory system R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
Safety Description | 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 the label whenever possible.) |
UN IDs | UN 2531 8/PG 2 |
WGK Germany | 1 |
RTECS | OZ2975000 |
TSCA | Yes |
HS Code | 2916 13 00 |
Hazard Class | 8 |
Packing Group | II |
Toxicity | LD50 orally in Rabbit: 1320 mg/kg |
Raw Materials | Acetone cyanohydrin Sulfuric acid |
Downstream Products | Glycidyl methacrylate Isobutyryl chloride |
A colorless transparent liquid at room temperature. Melting Point 14 °c. Boiling point 159~163 deg C (look kPa). The relative density was 1. 0153. Flash point 77 °c. Viscosity 1.3mPa.s. Refractive index 4314. Soluble in hot water, ethanol and most organic solvents. Easy to polymerize. It can form explosive mixture with air, and the explosion limit is 2.1% ~ l 2.5%.
important organic chemical raw materials and polymer intermediates. Its most important derivatives of methyl methacrylate production of organic glass can be used in aircraft and civil building windows, can also be processed into buttons, solar filters and automotive light lenses; the produced coating has superior suspension, Rheology and durability properties; The prepared binder can be used for the adhesion of metal, leather, plastic and building materials; Methacrylate polymer emulsion is used as fabric finishing agent and antistatic agent. In addition, methacrylic acid can also be used as a raw material for synthetic rubber.