| | Methyl vinyl ketone Basic information |
| Product Name: | Methyl vinyl ketone | | Synonyms: | Acetyle-thylene;delta(3)-2-butenone;delta(sup3)-2-butenone;delta3-2-Butenone;gamma-Oxo-alpha-butylene;Ketone, methyl vinyl;ketone,methylvinyl;Methyl ethenyl ketone | | CAS: | 78-94-4 | | MF: | C4H6O | | MW: | 70.09 | | EINECS: | 201-160-6 | | Product Categories: | | | Mol File: | 78-94-4.mol |  |
| | Methyl vinyl ketone Chemical Properties |
| Melting point | -7°C | | Boiling point | 80 °C | | density | 0.864 g/mL at 25 °C(lit.) | | vapor density | 1.3 (vs air) | | vapor pressure | 310 mm Hg ( 55 °C) | | refractive index | n20/D 1.411(lit.) | | Fp | 20 °F | | storage temp. | 2-8°C | | solubility | Chloroform (Sparingly), Methanol (Slightly) | | form | Liquid | | Specific Gravity | 0.864 | | color | Clear colorless to pale yellow, may discolor to brown on storage | | Odor | at 100.00?%. sweet | | explosive limit | 15.64% | | Water Solubility | MISCIBLE | | Merck | 14,6134 | | BRN | 506021 | | Stability: | Stable. Incompatible with strong bases, strong oxidizing agents, strong reducing agents. Heat and light sensitive. May undergo autopolymerization. Highly flammable. Refrigerate. | | LogP | 0.142 (est) | | CAS DataBase Reference | 78-94-4(CAS DataBase Reference) | | NIST Chemistry Reference | Methyl vinyl ketone(78-94-4) | | EPA Substance Registry System | Methyl vinyl ketone (78-94-4) |
| | Methyl vinyl ketone Usage And Synthesis |
| Description | Methyl vinyl ketone (MVK) is a stable, highly flammable, heatand light-sensitive, and colourless liquid. It is incompatible with strong bases, strong oxidising agents, and strong reducing agents and undergoes autopolymerisation. MVK is a reactive organic compound classified as an enone. It is a colourless to yellow, flammable, highly toxic liquid with a pungent odour. It is easily soluble in water, methanol, ethanol, and acetic acid. It can act as an alkylating agent. Its alkylating ability is both the source of its high toxicity and the feature that makes it a useful intermediate in organic synthesis. It polymerises spontaneously and is used in the manufacture of plastic polymers. It is also an intermediate in the synthesis of steroids and vitamin A. | | Chemical Properties | 3-Buten-2-one is a colorless liquid with a penetrating odor. The compound is
soluble in water and in organic solvents. Pure 3-buten-2-one is stable only below 0 ℃;
it polymerizes rapidly at room temperature. It is
stabilized for storage and transportation by the
addition of hydroquinone and glacial acetic acid
(0.1 wt % each). | | Uses | Alkylating agent; commercial starting material for plastics; as intermediate in the synthesis of steroids and vitamin A. | | Definition | ChEBI: Buten-2-one is a methyl ketone that is butan-2-one with an unsaturation at position 3. It is a methyl ketone and an enone. It is functionally related to a butan-2-one and a but-1-ene. | | General Description | A clear colorless liquid with a pungent odor. Flash point 20 °F. May polymerize with the release of heat under exposure to heat or contamination. Less dense than water. Highly toxic by inhalation. Causes burns to skin, eyes and mucous membranes. | | Air & Water Reactions | Highly flammable. Miscible with water. Unstable in the presence of heat, light and air. | | Reactivity Profile | Methyl vinyl ketone is incompatible with strong oxidizers and strong bases. Methyl vinyl ketone polymerizes spontaneously upon exposure to heat or sunlight. This polymerization may cause violent ruptures in containers. . | | Health Hazard | Methyl vinyl ketone is readily absorbed through the skin, causing general poisoning, similar to other ketones; inhalation has central nervous system depressant effects. It is irritating to mucous membranes and respiratory tract and to the skin; it is a lachrymator and can cause eye injury. | | Fire Hazard | Vapors form flammable mixtures with air, and may travel a considerable distance to a source of ignition and flash back. Polymerization may take place in containers, possibly with violent rupture of containers. Upon exposure to heat or flame, Methyl vinyl ketone emits toxic and irritating fumes. Container may explode in heat of fire. Vapor explosion and poison hazard indoors, outdoors, or in sewers. Polymerizes on standing. Hazardous polymerization may occur. Avoid heat or sunlight. | | Safety Profile | Poison by ingestion,
inhalation, and intraperitoneal routes. A
severe irritant to skin, eyes, and mucous
membranes. A lachrymator. Mutation data
reported. See also KETONES. Dangerous
fire hazard when exposed to heat, flame, or
oxidizers. To fight fire, use CO2, dry
chemical. When heated to decomposition it
emits acrid smoke and fumes. | | Potential Exposure | Methyl vinyl ketone is used as an
alkylating agent, a starting material for plastics; and an
intermediate in the synthesis of steroids and Vitamin A. | | First aid | inhalation has central nervous system depressant effects. Itis irritating to mucous membranes and respiratory tract andto the skin; it is a lachrymator and can cause eye injury.Liquid or high concentration of vapors causes blistering ofthe skin. Similar to other ketones, it can cause sore throat,sneezing, coughing, and salivation. Inhalation may causenausea and vomiting; inhalation of high concentrations cancause headache, dizziness, fainting, tremor, uncoordination,lowered body temperature, depressed respiratory and heartrate, gasping, coma, and death. Direct aspiration of liquidinto lungs can cause chemical pneumonia. | | storage | Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with thischemical you should be trained on its proper handling andstorage. Before entering confined space where this chemicalmay be present, check to make sure that an explosive concentration does not exist. Protect against physical damage.Outside or detached storage is preferred. Inside storageshould be in a standard flammable liquids storage room.Separate from oxidizing materials. MVK vapors are uninhibited and may form polymers in the flame arresters ofstorage tanks, resulting in stoppage of vent. | | Shipping | UN1251 Methyl vinyl ketone, stabilized, Hazard
class: 6.1; Labels: 6.1-Poison Inhalation Hazard,
3-Flammable liquid, 8-Corrosive material, Inhalation Zone A. | | Purification Methods | It forms an 85% azeotrope with water. After drying with K2CO3 and CaCl2 (with cooling), the ketone is distilled at low pressures. [Beilstein 1 IV 3444.] | | Incompatibilities | Vapors may form explosive mixture with
air. Heat or shock may cause explosive polymerization.
Incompatible with oxidizers (chlorates, nitrates, peroxides,
permanganates, perchlorates, chlorine, bromine, fluorine,
etc.); contact may cause fires or explosions. Keep away
from alkaline materials, strong bases, strong acids,
oxoacids, epoxides, nitrated amines, azo, diazo, azido
compounds, carbamates, organic cyanates. |
| | Methyl vinyl ketone Preparation Products And Raw materials |
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