Butenon

Use water to keep fire-exposed containers cool. Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. Wear positive pressure breathing apparatus and special protective clothing. Isolate for 1/2 mile in all directions if tank car or truck is involved in fire.

Use water spray, powder, alcohol-resistant foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.

Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention .

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

Warning: This material is readily absorbed through the skin, causing general poisoning similar to other ketones.

General First Aid:

... The inhibited monomer may ... polymerize if heated sufficiently (by exposure to fire) and lead to rupture of the containing vessel.

Vapors are heavier than air and may travel to a source of ignition and flash back. Closed containers may rupture violently when heated. Reacts violently with a broad range of materials under fire conditions. Combustion may produce irritants and toxic gases.

... Vapors are uninhibited and may form polymers and block the vents ... A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20 °C.

· Wear positive pressure self-contained breathing apparatus (SCBA).

TIH (Toxic Inhalation Hazard) - Term used to describe gases and volatile liquids that are toxic when inhaled. Some are TIH materials themselves, e.g., chlorine, and some release TIH gases when spilled in water, e.g., chlorosilanes. [ERG 2016].

Use dry chemical, "alcohol resistant" foam, carbon dioxide, or water spray. Water may be ineffective. Use water spray to keep fire-exposed containers cool. fight fire from protected location or maximum possible distance. Approach fire from upwind to avoid hazardous vapors and toxic decomp products.

If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use "alcohol" foam, dry chemical or carbon dioxide. /Methyl vinyl ketone, stabilized/

Evaculation: If fire becomes uncontrollable or container is exposed to direct flame consider evacuation of one-half (1/2) mile radius. /Methyl vinyl ketone, stabilized/

3-Buten-2-one can only be stored in stabilized form at room temperature.

Store in a cool, dry, well-ventilated location. Store away from heat, oxidizing materials, and sunlight. Separate from alkalies, reducing agents. Outside or detached storage is preferred.

Fireproof ... Keep in the dark ... Store only if stabilized.

Environmental considerations: air spill: Apply water spray or mist to knock down vapors. /Methyl vinyl ketone, stabilized/

Environmental considerations: water spill: Use natural barriers or oil spill control booms to limit spill travel. Remove trapped material with suction hoses. /Methyl vinyl ketone, stabilized/

Environmental considerations: land spill: Dig a pit, pond, lagoon, holding are to contain liquid or solid material. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. /Methyl vinyl ketone, stabilized/

Eliminate all ignition sources. Stop or control the leak, if this can be done without indue risk. Use water spray to cool and disperse vapors, protect personnel, and dilute spills to form nonflammable mixtures. Control runoff and isolate discharged material for proper disposal.

Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Personal protection: chemical protection suit including self-contained breathing apparatus.

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

EC50; Species: Pseudokirchneriella subcapitata (Green algae); Conditions: freshwater; static; Concentration: 120 ug/L (95% confidence limit: 0 to 610 ug/L) for 96 hr; Effect: population, biomass /active ingredient/

EC50; Species: Tetrahymena pyriformis (ciliated protozoan); Conditions: not specified; Concentration: 2.17 mg/L/40 hr; Effects: cell-multiplication inhibition

EC50; Species: Selenastrum capricornutum (algae)); Conditions: not specified; Concentration: 0.13 mg/L/96 hr; Effects: biomass

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 3.8(SRC), determined from a structure estimation method(2), indicates that methyl vinyl ketone is expected to have very high mobility in soil(SRC). Volatilization of methyl vinyl ketone from moist soil surfaces is expected to be an important fate process(SRC) given a Henry's Law constant of 4.65X10-5 atm-cu m/mole(3). Methyl vinyl ketone is expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 152 mm(4). A 0% theoretical BOD in 5 days using an acclimated sewage inoculum(5,6) suggests that biodegradation may not be an important environmental fate process in soil(SRC).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 3.8(SRC), determined from a structure estimation method(2), indicates that methyl vinyl ketone is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon a Henry's Law constant of 4.65X10-5 atm-cu m/mole(4). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 18 hours and 8.1 days, respectively(SRC). According to a classification scheme(5), an estimated BCF of 3.2(SRC), from an estimated log Kow of 0.41(6) and a regression-derived equation(7), suggests the potential for bioconcentration in aquatic organisms is low(SRC). A 0% theoretical BOD in 5 days using an acclimated sewage inoculum(8,9) suggests that biodegradation may not be an important environmental fate process in water(SRC).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), methyl vinyl ketone, which has an estimated vapor pressure of 152 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase methyl vinyl ketone is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 20 hours(SRC), calculated from its rate constant of 1.88X10-11 cu cm/molecule-sec at 25 °C(3). The rate constant for the vapor-phase reaction of methyl vinyl ketone with ozone has been estimated as 4.7X10-16 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(4). This corresponds to an atmospheric half-life of about 2.4 days at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(5). The rate constant for the vapor-phase reaction of methyl vinyl ketone with nitrate has been estimated as 1.62X10-14 cu cm/molecule-sec at 25 °C(6). This corresponds to an atmospheric half-life of about 2.1 days at an atmospheric concentration of 2.4X10+8 nitrate molecules per cu cm(7).

/AQUATIC SPECIES/ A 24 hr germination test with the mold Cladosporium cladosporioides with methyl vinyl ketone showed an almost complete, yet reversible, suppression of spore germination as of 0.2 mg/L.

/AQUATIC SPECIES/ ... 24 hr and 48 hr EC0 /no effect/ values of 0.25 mg/L and 0.125 mg/L, respectively, were found with respect to the swimming inability of Daphnia magna.

Burning sensation. Cough. Sore throat. Shortness of breath. Laboured breathing. Headache. Dizziness. Tremor. Symptoms may be delayed.

MAY BE ABSORBED! Redness. Pain. Skin burns. Further see Inhalation.

Watering of the eyes. Redness. Pain. Severe deep burns.

Burning sensation. Abdominal pain. Shock or collapse. Further see Inhalation.

The following link will take the user to the National Toxicology Program (NTP) Test Agent Search Results page, which tabulates all of the "Standard Toxicology & Carcinogenesis Studies", "Developmental Studies", and "Genetic Toxicity Studies" performed with this chemical. Clicking on the "Testing Status" link will take the user to the status (i.e., in review, in progress, in preparation, on test, completed, etc.) and results of all the studies that the NTP has done on this chemical. [http://ntp-apps.niehs.nih.gov/ntp_tox/index.cfm?fuseaction=ntpsearch.searchresults&searchterm=78-94-4]

Releases of CERCLA hazardous substances are subject to the release reporting requirement of CERCLA section 103, codified at 40 CFR part 302, in addition to the requirements of 40 CFR part 355. Methyl vinyl ketone is an extremely hazardous substance (EHS) subject to reporting requirements when stored in amounts in excess of its threshold planning quantity (TPQ) of 10 lbs.

Used as an intermediate in chemical synthesis, an alkylating agent, and a monomer in resins; it is present in cigarette smoke; [HSDB] Used as a monomer to make styrene-MVK polymers for packaging applications; [ACGIH]

Smoking cigarettes [Category: Food & Drugs]

Alkylating agent; commercial starting material for plastics; as intermediate in synthesis of steroids and vitamin A

Component of ionomer resins

Precursor of styrene-methyl vinyl ketone polymers which are useful as photodegradable polymers in packaging applications

The Diels-Alder adduct with cyclopentadiene, methyl (5-norbornen-2-yl) ketone, is used as a precursor for pharmaceuticals such as Akineton (Knoll). Derivatives of alpha-vinyl lactic acid nitrile (from 3-buten-2-one and hydrocyanic acid) are used as fungicides, eg, Ronilan (BASF). The most important product based on 3-buten-2-one is 3-methyl-2-penten-4-in-1-ol, a building block in an industrial synthesis of vitamin A.

... By condensation of acetone and formaldehyde to 3-ketobutanol and dehydration to methyl vinyl ketone.

Preparation from vinylacetylene: Conaway, US 1967225 (1934 to DuPont)

The Mannich reaction of diethylamine, acetone, and formaldehyde. ... The diethylamine hydrochloride released by thermolysis of the Mannich base can be recycled for use in the reaction with acetone and formaldehyde.

Condensation of acetone with formaldehyde [66], [67] and subsequent elimination of water. ... The water can be eliminated from 4-hydroxy-2-butanone in the liquid or gas phase.