CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Benzoyl peroxide appears as odorless white powder or granules. Sinks in water. (USCG, 1999) |
|---|---|
| Color/Form | Crystals |
| Odor | Faint, benzaldehyde-like odor. |
| Taste | Tasteless |
| Boiling Point | Decomposes explosively (NTP, 1992) |
| Melting Point | 217 to 221 °F (decomposes) (NTP, 1992) |
| Flash Point | 176 °F (NIOSH, 2023) |
| Solubility | less than 1 mg/mL at 79 °F (NTP, 1992) |
| Density | 1.334 at 59 °F (USCG, 1999) - Denser than water; will sink |
| Vapor Pressure | less than 0.1 mmHg at 68 °F (NTP, 1992) |
| LogP | log Kow = 3.46 |
| Stability/Shelf Life | Stable under recommended storage conditions. |
| Autoignition Temperature | 176 °F (NTP, 1992) |
| Decomposition | Decomposes explosively. |
| Heat of Combustion | 1551.7 kcal/mole |
| Refractive Index | Index of refraction: 1.543 |
| Other Experimental Properties | ... Active oxygen approximately 6.5 percent ... decomposes explosively above 105 °C |
| Chemical Classes | Other Classes -> Peroxides, Organic |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07  Environment GHS09 |
| GHS Hazard Statements |
H242:Self-reactive substances and mixtures; and Organic peroxides H317:Sensitisation, Skin H319:Serious eye damage/eye irritation H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P220:Keep/Store away from clothing/…/combustible materials. P234:Keep only in original container. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P370+P378:In case of fire: Use … for extinction. |
COMPUTED DESCRIPTORS
| Molecular Weight | 242.23 g/mol |
|---|---|
| XLogP3 | 3.5 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 5 |
| Exact Mass | 242.05790880 g/mol |
| Monoisotopic Mass | 242.05790880 g/mol |
| Topological Polar Surface Area | 52.6 Ų |
| Heavy Atom Count | 18 |
| Formal Charge | 0 |
| Complexity | 258 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Benzoyl peroxide appears as odorless white powder or granules. Sinks in water. (USCG, 1999)