| | 2-Butanone peroxide Basic information |
| | 2-Butanone peroxide Chemical Properties |
| Melting point | 110°C | | Boiling point | 284 °C | | density | 1.053 g/mL at 20 °C(lit.) | | vapor pressure | 0.644-73.6Pa at 25℃ | | refractive index | n20/D 1.455 | | Fp | 190 °F | | storage temp. | 2-8°C | | form | Liquid | | Water Solubility | 0.1-0.5 g/100 mL at 22 ºC | | BRN | 1759757 | | Exposure limits | ACGIH (1986) recommends a ceiling limit
of 1.5 mg/m3 (0.2 ppm). This concentration
in air is based on its irritant properties. | | Stability: | May react violently or explode if heated. Reacts violently with combustibles and organic material. Incompatible with flammables, strong oxidizing agents, strong reducing agents, promoters such as Cobalt compounds, brass, mild steel, aluminum alloys, natural and synthetic rubbers and chemical accelerators, heavy metals, acids and bases. | | LogP | 0.3 at 25℃ | | CAS DataBase Reference | 1338-23-4(CAS DataBase Reference) | | EPA Substance Registry System | Methyl ethyl ketone peroxide (1338-23-4) |
| | 2-Butanone peroxide Usage And Synthesis |
| Chemical Properties | colourless liquid of high viscosity | | Chemical Properties | MEKP, an organic peroxide, is a colorless
liquid. | | Uses | Manufacture of acrylic resins, hardening agentfor fiberglass-reinforced plastics. | | Uses | MEK peroxide it is used to initiate thepolymerization of ethylene, styrene, vinylchloride, and other monomers; and for roomtemperature curing of polyester resins. | | Uses | Reactive free radical-generating
chemical used as a curing agent for unsaturated
polyester resins; hardening agent for fiberglassreinforced
plastics; manufacture of acrylic
resins | | Application | 2-Butanone peroxide can be used as the following reactants:
Studies of the adiabatic runaway reaction of Me Et Ketone peroxide.
Quantitation of metal ions in archaeological glass via abrasive stripping square-wave voltammetry.
Imaging of hydrogen peroxide and hydrogen peroxide-scavenging substances by photon emission.
Synthesis of oligonucleotides via phosphoramidite method.
Oxidation of nucleoside phosphites into phosphates.
Comparing the relative effectiveness of human plasma glutathione peroxidase as a catalyst for reduction of hydroperoxidases.
2-Butanone peroxide can also be used as a direct electrochemical catalyst analyte for immobilized Hb in ethanol-water mixtures. | | Preparation | 2-Butanone peroxide is obtained by reacting methyl ethyl ketone with hydrogen peroxide (hydrogen peroxide) in the presence of sulfuric acid. After oxidation, neutralization, separation, dehydration, standing, filtration, and finally adding the solubilizing agent to obtain the finished product. | | General Description | Colorless liquid. Strong irritant to skin and tissue. Used as an initiator for room temperature cure of unsaturated polyester resins. | | Reactivity Profile | 2-Butanone peroxide is a strong oxidizing agent. May be ignited by heat, sparks or flame and undergoes self-accelerating decomposition. Explosive decomposition occurs at 230° F. Sensitive to sunlight. Ignition and/or explosion may occur if mixed with readily oxidizable materials. Reacts with combustible materials such as wood, cloth or organic materials, with chlorine, and with metals (iron, copper and their alloys and aluminum and its alloys). Incompatible with strong oxidizing agents, strong reducing agents, natural rubbers, synthetic rubbers and chemical accelerators. Incompatible with heavy metals, acids and bases. | | Hazard | Fire risk in contact with organic materials.Strong irritant to skin and tissue. Liver and kidneydamage. | | Health Hazard | Extremely destructive to tissue of the mucous membranes, upper respiratory tract, eyes, and skin. Symptoms of exposure include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. | | Health Hazard | MEK peroxide is a strong skin and eye irritantwith moderate acute and subchronic toxicity.Its toxicity is greater than di-t-butylperoxide and benzoyl peroxide. Inhalationof its vapors can cause injury to lungs withsymptoms of gross hemorrhages and hyperemia(Floyd and Stockinger 1958). Exposureto high concentrations may have damagingeffects on the liver and kidney. In humans,ingestion of 30–40 g can be toxic, whichmay cause gastrointestinal pain, nausea, andvomiting.
LC50 value, inhalation (mice): 170 ppm/4 h
LD50 value, intraperitoneal (rats): 65 mg/kg
LD50 value, oral (mice): 470 mg/kg
Its carcinogenicity is not yet fully established.It is reported (NIOSH 1986) to causetumor in mice. | | Fire Hazard | Behavior in Fire: Explosive. | | Safety Profile | Poison by
intraperitoneal route. Moderately toxic by
ingestion and inhalation. Human systemic
effects by ingestion: changes in structure or
function of esophagus, nausea or vomiting,
other gastrointestinal effects. A moderate
skin and eye irritant. Questionable
carcinogen with experimental tumorigenic
data. A shock-sensitive explosive. When
heated to decomposition it emits acrid
smoke and irritating fumes. | | Potential Exposure | MEKP is used as a curing agent for
thermosetting polyester resins and as a crosslinking agent
and catalyst in the production of other polymers | | storage | MEK peroxide is diluted in a solvent or dispersedin a plasticizer, which greatly reducesits shock sensitivity. It is stored in a refrigeratorin a well-ventilated area and wellseparated from other chemicals. Peroxidewith an active oxygen content >9% maynot be shipped. Diluted material is shippedin metal drums with polyethylene liners orpolyethylene-lined paper bags in woodenboxes. | | Shipping | UN3105 Organic peroxide type D, liquid,
Hazard Class: 5.2; Labels: 5.2-Organic peroxide, Technical
Name Required.
| | Incompatibilities | Forms explosive mixture with air (flash
point varies). MEKP may exist in several different structures; decomposition temperatures may vary. Pure substance is shock-sensitive. Explosive decomposition above
176F/80C (also reported @ 230F/110C). Keep away
from sources of ignition, heat, sunlight. A strong oxidizer.
Violent reaction with strong acids; strong bases; reducing
agents; combustible substances, organic materials; chemical
accelerants; oxides of heavy metals; salts, trace contaminants; amines. May accumulate static electrical charges,
and cause ignition of its vapors. Commercial product is
diluted with 40% dimethyl phthalate, cyclohexane peroxide; or diallyl phthalate to reduce sensitivity to shock. | | Waste Disposal | Consult with environmental
regulatory agencies for guidance on acceptable disposal
practices. Generators of waste containing this contaminant
(≥100 kg/mo) must conform to EPA regulations governing
storage, transportation, treatment, and waste disposal.
MEKP may be destroyed by adding 20% NaOH solution
slowly in a quantity about 10 times the weight of MEKP.
Incineration is recommended if NaOH treatment is not
used |
| | 2-Butanone peroxide Preparation Products And Raw materials |
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