Compound: 2-BUTANONE PEROXIDE
SMILES: O(OC(OO)(CC)C)C(OO)(CC)C
InChIKey: WFUGQJXVXHBTEM-UHFFFAOYSA-N
Synonyms: 2-BUTANONE PEROXIDE, 1338-23-4, Methyl ethyl ketone peroxide, Thermacure, Ketonox, Mepox, Esperfoam FR, Lupersol DEL, Butanox LPT, 2-butanoneperoxide, Quickset super, MEKP, Quickset Extra, 2-Butanone, peroxide, Lucidol delta X, MEK peroxide, Kayamek A, Kayamek M, Lupersol DDM, Lupersol DNF, Lupersol DSW, Lupersol delta X, Permek G, Permek N, Sprayset MEKP, Chaloxyd MEKP HA 1, Lucidol DDM 9, Lupersol DDA 30, Trigonox M 50, Butanox M 50, MEKPO, Butanox M 105, Ethyl methyl ketone peroxide, HI-Point PD-1, HI-Point 90, Chaloxyd MEKP-HA 1, Chaloxyd MEKP-LA 1, HI-Point 180, Superox 46-710, RCRA waste number U160, Methylethylketonhydroperoxide, Methyl ethyl ketone hydroperoxide, NCI-C55447, FR 222, W2545087UL, DTXSID1024671, RefChem:817745, DTXCID104671, 2-((2-hydroperoxybutan-2-yl)peroxy)butane-2-peroxol, 215-661-2, 2-hydroperoxy-2-(2-hydroperoxybutan-2-yldioxy)butane, 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane, CCRIS 6216, HSDB 4181, EINECS 215-661-2, RCRA waste no. U160, UNII-W2545087UL, methyl ehtyl ketone peroxide, SCHEMBL15306, 2-Butanone peroxide, technical, CHEMBL1562553, 2,2'-Peroxydi(butane-2-peroxol), 2-BUTANONE PEROXIDE [HSDB], AKOS015914484, NCGC00091754-01, NCGC00091754-02, NS00009405, Q2914590, Ethyl methyl ketone peroxide, Methyl ethyl ketone peroxide, 2-Butanone peroxide solution, ~32 wt. % in phthalate-free plasticizer mixture, 2-Butanone peroxide solution, ~35 wt. % in 2,2,4-trimethyl-1,3-pentanediol diisobutyrate
Theoretical properties:
molecular_formula: C8H18O6
molecular_weight: 210.22 g/mol
exact_mass: 210.11033829 g/mol
formal_charge: 0
hydrogen_bond_donor_count: 2
hydrogen_bond_acceptor_count: 6
rotatable_bond_count: 7
heavy_atom_count: 14
topological_polar_surface_area: 77.4 Å²
isotope_atom_count: 0
covalently_bonded_unit_count: 1
Physical properties:
physical_state: Colorless liquid
color: Colorless liquid
odor: Typical odor-resembles that of acetone.
boiling_point: 244 °F at 760 mmHg (Decomposes) (NIOSH, 2024)
density: 1.17 at 68 °F (USCG, 1999) - Denser than water; will sink
solubility: 1 to 5 mg/mL at 72 °F (NTP, 1992)
flash_point: 180 °F (NTP, 1992)
vapor_pressure: less than 0.01 mmHg at 68 °F Component 2 (83.33%: LACTOSE) (NTP, 1992)
Descriptions:
chembl: Unnamed Compound is a small molecule listed in the ChEMBL database but has not progressed to an approved clinical phase.
wikipedia: Methyl ethyl ketone peroxide (MEKP) is an organic peroxide with the formula [(CH3)(C2H5)C(O2H)]2O2. MEKP is a colorless oily liquid.  It is widely used in vulcanization (crosslinking) of polymers.
It is derived from the reaction of methyl ethyl ketone and hydrogen peroxide under acidic conditions. Several products result from this reaction including a cyclic dimer. The linear dimer, the topic of this article, is the most prevalent. and this is the form that is typically quoted in the commercially available material.
Solutions of 30 to 40% MEKP are used in industry and by hobbyists as catalyst to initiate the crosslinking of unsaturated polyester resins used in fiberglass, and casting. For this application, MEKP often is dissolved in a phlegmatizer such as dimethyl phthalate, cyclohexane peroxide, or diallyl phthalate to reduce sensitivity to shock. Benzoyl peroxide can be used for the same purpose.