C8H18O6
210.22 g/mol
Industrial ChemicalDanger
2-BUTANONE PEROXIDE
CAS1338-23-4EC215-661-2
Category
Industrial Chemical
Compound Class
Other
Primary Use
curing agent for unsaturated polyester resins
2-Butanone peroxide, commonly known as methyl ethyl ketone peroxide (MEKP), is an organic peroxide used as a curing agent for unsaturated polyester resins. It is a colorless oily liquid that initiates crosslinking in polymers, making it important in industrial applications such as vulcanization.
curing agent for unsaturated polyester resinsvulcanization (crosslinking) of polymers
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
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CAS1338-39-2
emulsifier and surfactant
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CAS133937-72-1
liquid crystal intermediate
ReferenceSame Category
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CAS134-11-2
Component in dental cements
ReferenceSame Category
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CAS134-32-7
intermediate for dyes and antioxidants
Safety Reference
Danger
H242Heating may cause a fire
H302Harmful if swallowed
H332Harmful if inhaled
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H335May cause respiratory irritation
H227
H241Heating may cause a fire or explosion
H315Causes skin irritation
H330Fatal if inhaled
H336May cause drowsiness or dizziness
H370Causes damage to organs
H401Toxic to aquatic life
H313May be harmful in contact with skin
H373May cause damage to organs through prolonged or repeated exposure
H312Harmful in contact with skin
H341Suspected of causing genetic defects
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 2-BUTANONE PEROXIDE (CAS 1338-23-4) is 2909.60.
HS code (international, 6-digit)
2909.60
EU CN code (8-digit)
2909 60 10
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane
InChIKey
WFUGQJXVXHBTEM-UHFFFAOYSA-N
SMILES
CCC(C)(OO)OOC(C)(CC)OO
Synonyms (49)
- MEKP
- MEKPO
- 2-BUTANONE PEROXIDE
- Butanox LPT
- Butanox M 105
- Butanox M 50
- Chaloxyd MEKP HA 1
- Chaloxyd MEKP-LA 1
- Esperfoam FR
- Ethyl methyl ketone peroxide
- FR 222
- HI-Point 180
- HI-Point 90
- HI-Point PD-1
- Kayamek A
- Kayamek M
- Ketonox
- Lucidol DDM 9
- Lucidol delta X
- Lupersol DDA 30
- Lupersol DDM
- Lupersol DEL
- Lupersol DNF
- Lupersol DSW
- Lupersol delta X
- MEK peroxide
- Mepox
- Methyl ethyl ketone peroxide
- Methylethylketonhydroperoxide
- Permek G
- Permek N
- Quickset Extra
- Quickset super
- RCRA waste no. U160
- RCRA waste number U160
- Sprayset MEKP
- Superox 46-710
- Thermacure
- Trigonox M 50
- methyl ehtyl ketone peroxide
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