2-Butanone peroxide , About 30%of the dihaxyl ester in phthalate , 1338-23-4
Synonym(s):
2-Butanone peroxide solution;Ethyl methyl ketone peroxide;Methyl ethyl ketone peroxide;Methyl ethyl ketone peroxide solution
CAS NO.：1338-23-4
Empirical Formula: C8H18O6
Molecular Weight: 210.22
MDL number: MFCD00042641
EINECS: 215-661-2
PRODUCT 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 | n |
| Flash point: | 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) |
Description and Uses
MEKP, an organic peroxide, is a colorlessliquid. Molecular weight= 176.24; Specific gravity(H2O:1)= 1.12 at15℃; Boiling point = (decomposes)117.89C; FreezingMelting point = about, 60℃. Flashpoint= 52-93℃ (oc)60%MEKP.HazardIdentification (based on NFPA-704 M Rating System):Health 3, Flammability 2, Reactivity 2. Insoluble in water.
2-Butanone peroxide is used to initiate thepolymerization of ethylene, styrene, vinylchloride, and other monomers; and for roomtemperature curing of polyester resins. It can also used as a crosslinking agent and catalyst in the production of other polymers. Reactive free radical-generating chemical used as a curing agent for unsaturated polyester resins; hardening agent for fiberglassreinforced plastics; manufacture of acrylic resin.
Safety
| Symbol(GHS) |    GHS02,GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H226-H242-H302-H314 |
| Precautionary statements | P220-P280-P305+P351+P338-P310-P403+P235-P410 |
| Hazard Codes | O,Xn,C,T,N |
| Risk Statements | 8-22-38-41-43-34-7-35-23-9-62-50/53-61 |
| Safety Statements | 17-26-36/37/39-45-14-53-3/7-47-7-61 |
| RIDADR | UN 3105 5.2 |
| OEL | Ceiling: 0.2 ppm (1.5 mg/m3) |
| WGK Germany | 1 |
| HazardClass | 5.2 |
| PackingGroup | II |
| Hazardous Substances Data | 1338-23-4(Hazardous Substances Data) |
