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| Benzoyl peroxide | CAS 94-36-0 | ||
| (C6H5CO)2O2 | RTECS DM8575000 | ||
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Synonyms & Trade Names Benzoperoxide, Dibenzoyl peroxide |
DOT ID & Guide 2085 146 2087 146 2088 146 2089 146 2090 146 |
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Exposure Limits |
NIOSH REL: TWA 5 mg/m3 | ||
| OSHA PEL: TWA 5 mg/m3 | |||
| IDLH 1500 mg/m3 | Conversion | ||
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Physical Description Colorless to white crystals or a granular powder with a faint, benzaldehyde-like odor. |
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MW: 242.2 |
BP: Decomposes explosively |
MLT: 217°F |
Sol: <1% |
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VP: <1 mmHg |
IP: ? |
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Sp.Gr: 1.33 |
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Fl.P: 176°F |
UEL: ? |
LEL: ? |
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| Combustible Solid (easily ignited and burns very rapidly). | |||
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Incompatibilities & Reactivities Combustible substances (wood, paper, etc.), acids, alkalis, alcohols, amines, ethers [Note: Containers may explode when heated. Extremely explosion-sensitive to shock, heat & friction.] |
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Measurement Methods NIOSH 5009 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH/OSHA Up to 50 mg/m3: (APF = 10) Any dust and mist respirator except single-use and quarter-mask respirators*/(APF = 10) Any supplied-air respirator* Up to 125 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 25) Any powered, air-purifying respirator with a dust and mist filter* Up to 250 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter*/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Up to 1500 mg/m3: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, mucous membrane; sensitization dermatitis | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION |