Ethyl methyl ketone peroxide
Exploding Bomb
Flame
Corrosion
Skull and Crossbones
Exclamation Mark
Health Hazard
Hazard Statements
| Code | Statement | Hazard Class |
|---|---|---|
H227 |
Combustible liquid | Flammable liquids |
H241 |
Heating may cause a fire or explosion | Self-reactive substances and mixtures; Organic peroxides |
H302 |
Harmful if swallowed | Acute toxicity, oral |
H315 |
Causes skin irritation | Skin corrosion/irritation |
H318 |
Causes serious eye damage | Serious eye damage/eye irritation |
H330 |
Fatal if inhaled | Acute toxicity, inhalation |
H335 |
May cause respiratory irritation | Specific target organ toxicity, single exposure; Respiratory tract irritation |
H336 |
May cause drowsiness or dizziness | Specific target organ toxicity, single exposure; Narcotic effects |
H370 |
Causes damage to organs | Specific target organ toxicity, single exposure |
H401 |
Toxic to aquatic life | Hazardous to the aquatic environment, acute hazard |
Precautionary Statements
| Code | Statement |
|---|---|
P210 |
Keep away from heat, hot surface, sparks, open flames and other ignition sources. No smoking. |
P234 |
Keep only in original container. |
P235 |
Keep cool. |
P240 |
Ground/bond container and receiving equipment. |
P260 |
Do not breathe dust/fume/gas/mist/vapors/spray. |
P261 |
Avoid breathing dust/fume/gas/mist/vapors/spray. |
P264 |
Wash hands [and ...] thoroughly after handling. |
P264+P265 |
Wash hands [and ...] thoroughly after handling. Do not touch eyes. |
P270 |
Do not eat, drink or smoke when using this product. |
P271 |
Use only outdoors or in a well-ventilated area. |
P273 |
Avoid release to the environment. |
P280 |
Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... |
P284 |
[In case of inadequate ventilation] Wear respiratory protection. |
P301+P317 |
IF SWALLOWED: Get medical help. |
P302+P352 |
IF ON SKIN: wash with plenty of water/... |
P304+P340 |
IF INHALED: Remove person to fresh air and keep comfortable for breathing. |
P305+P354+P338 |
IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. |
P308+P316 |
IF exposed or concerned: Get emergency medical help immediately. |
P316 |
Get emergency medical help immediately. |
P317 |
Get emergency medical help. |
P319 |
Get medical help if you feel unwell. |
P320 |
Specific treatment is urgent (see ... on this label). |
P321 |
Specific treatment (see information on this label and safety datasheet)). |
P330 |
Rinse mouth. |
P332+P317 |
If skin irritation occurs: Get medical help. |
P362+P364 |
Take off contaminated clothing and wash it before reuse. |
P370+P378 |
In case of fire: Use ... to extinguish. |
P370+P380+P375 |
In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion. |
P378 |
Use ... to extinguish. |
P403 |
Store in a well-ventilated place. |
P403+P233 |
Store in a well-ventilated place. Keep container tightly closed. |
P405 |
Store locked up. |
P410 |
Protect from sunlight. |
P411 |
Store at temperatures not exceeding ... °C/...°F. |
P420 |
Store separately. |
P501 |
Dispose of contents/container to ... |
Exposure Limits
| NIOSH REL | Ceiling: 0.2 ppm |
| Skin Notation | Yes — can be absorbed through skin |
Physical Properties
Colorless liquid with a characteristic odor.
| Boiling Point | 244°F (decomposes) |
| Flash Point | 125-200°F for 60% MEKP (open cup) |
| Specific Gravity | 1.12 |
NFPA 704 Diamond
2
3
2
Health
Fire
Reactivity
Synonyms
2-butanone peroxide, MEKP, MEK peroxide
Data Sources
- GHS Classification: PubChem CID 3672772
- NIOSH REL/IDLH: NIOSH Pocket Guide
Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.
See something wrong? Report a data issue.