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Material Safety Data Sheet
Benzoyl peroxide MSDS
Section 1: Chemical Product and Company Identification
Product Name: Benzoyl peroxide
Contact Information:
Catalog Codes: SLB1051, Inc.
14025 Smith Rd.
CAS#: 94-36-0
RTECS: DM8575000
US Sales: 1-800-901-7247
International Sales: 1-281-441-4400
TSCA: TSCA 8(b) inventory: Benzoyl peroxide
CI#: Not available.
CHEMTREC (24HR Emergency Telephone), call:
Chemical Formula: C14-H10-O4
International CHEMTREC, call: 1-703-527-3887
For non-emergency assistance, call: 1-281-441-4400
Section 2: Composition and Information on Ingredients
% by Weight
Toxicological Data on Ingredients: Benzoyl peroxide: ORAL (LD50): Acute: 7710 mg/kg [Rat].
Section 3: Hazards Identification
Potential Acute Health Effects:
Extremely hazardous in case of ingestion. Very hazardous in case of skin contact (irritant), of eye contact (irritant), of
inhalation. Prolonged exposure may result in skin burns and ulcerations. Over-exposure by inhalation may cause respiratory
irritation. Inflammation of the eye is characterized by redness, watering, and itching. Skin inflammation is characterized by
itching, scaling, reddening, or, occasionally, blistering.
Potential Chronic Health Effects:
Extremely hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of inhalation. CARCINOGENIC
EFFECTS: Classified None. by OSHA, None. by NIOSH. (Inadequate study.) by NTP. MUTAGENIC EFFECTS: Not available.
TERATOGENIC EFFECTS: Not available. DEVELOPMENTAL TOXICITY: Not available. Repeated or prolonged inhalation of
dust may lead to chronic respiratory irritation.
Section 4: First Aid Measures
Eye Contact:
Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15
minutes. Cold water may be used. WARM water MUST be used. Get medical attention immediately.
Skin Contact:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing
and shoes. Cover the irritated skin with an emollient. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get
medical attention immediately.
Serious Skin Contact:
Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek medical attention.
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical
Serious Inhalation:
Evacuate the victim to a safe area as soon as possible. Loosen tight clothing such as a collar, tie, belt or waistband. If
breathing is difficult, administer oxygen. If the victim is not breathing, perform mouth-to-mouth resuscitation. Seek medical
Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious
person. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention if symptoms appear.
Serious Ingestion: Not available.
Section 5: Fire and Explosion Data
Flammability of the Product: May be combustible at high temperature.
Auto-Ignition Temperature: 80°C (176°F)
Flash Points: Not available.
Flammable Limits: Not available.
Products of Combustion: These products are carbon oxides (CO, CO2).
Fire Hazards in Presence of Various Substances: Flammable in presence of combustible materials.
Explosion Hazards in Presence of Various Substances:
Risks of explosion of the product in presence of static discharge: Not available. Explosive in presence of heat. Slightly
explosive in presence of shocks, of combustible materials.
Fire Fighting Media and Instructions:
Oxidizing material. Do not use water jet. Use flooding quantities of water. Avoid contact with organic materials.
Special Remarks on Fire Hazards: Not available.
Special Remarks on Explosion Hazards: Not available.
Section 6: Accidental Release Measures
Small Spill: Use appropriate tools to put the spilled solid in a convenient waste disposal container.
Large Spill:
Oxidizing material. Organic peroxide. Stop leak if without risk. Avoid contact with a combustible material (wood, paper, oil,
clothing.). Keep substance damp using water spray. Do not use metal tools or equipment. Do not touch spilled material. Use
water spray to reduce vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Eliminate all ignition
sources. Call for assistance on disposal. Be careful that the product is not present at a concentration level above TLV. Check
TLV on the MSDS and with local authorities.
Section 7: Handling and Storage
Keep locked up. Keep away from heat. Keep away from sources of ignition. Keep away from combustible material. Keep
away from direct sunlight or strong incandescent light. Empty containers pose a fire risk, evaporate the residue under a
fume hood. Ground all equipment containing material. Do not ingest. Do not breathe dust. Avoid shock and friction. In case
of insufficient ventilation, wear suitable respiratory equipment. If ingested, seek medical advice immediately and show the
container or the label. Avoid contact with skin and eyes. Keep away from incompatibles such as combustible materials, metals,
acids, alkalis.
Keep container tightly closed. Keep container in a cool, well-ventilated area. Separate from acids, alkalies, reducing agents
and combustibles. See NFPA 43A, Code for the Storage of Liquid and Solid Oxidizers. Do not store above 40°C (104°F).
Section 8: Exposure Controls/Personal Protection
Engineering Controls:
Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below recommended
exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants
below the exposure limit.
Personal Protection:
Safety glasses. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent. Gloves (impervious).
Personal Protection in Case of a Large Spill:
Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used to avoid
inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this
Exposure Limits:
TWA: 5 Consult local authorities for acceptable exposure limits.
Section 9: Physical and Chemical Properties
Physical state and appearance: Solid.
Odor: Not available.
Taste: Not available.
Molecular Weight: 242.23 g/mole
Color: Not available.
pH (1% soln/water): Not available.
Boiling Point: Decomposition temperature: 103°C (217.4°F)
Melting Point: 104.5°C (220.1°F)
Critical Temperature: Not available.
Specific Gravity: 1.33 (Water = 1)
Vapor Pressure: Not applicable.
Vapor Density: Not available.
Volatility: Not available.
Odor Threshold: Not available.
Water/Oil Dist. Coeff.: Not available.
Ionicity (in Water): Not available.
Dispersion Properties: Not available.
Solubility: Very slightly soluble in cold water.
Section 10: Stability and Reactivity Data
Stability: Unstable.
Instability Temperature: >75°C (167°F)
Conditions of Instability: Not available.
Incompatibility with various substances:
Highly reactive with acids, alkalis. Reactive with combustible materials, metals. The product may undergo hazardous
decomposition, condensation or polymerization, it may react violently with water to emit toxic gases or it may become self-
reactive under conditions of shock or increase in temperature or pressure.
Corrosivity: Non-corrosive in presence of glass.
Special Remarks on Reactivity: Not available.
Special Remarks on Corrosivity: Not available.
Polymerization: Will not occur.
Section 11: Toxicological Information
Routes of Entry: Absorbed through skin. Eye contact. Inhalation. Ingestion.
Toxicity to Animals: Acute oral toxicity (LD50): 7710 mg/kg [Rat].
Chronic Effects on Humans: CARCINOGENIC EFFECTS: Classified None. by OSHA, None. by NIOSH. (Inadequate study.)
by NTP.
Other Toxic Effects on Humans:
Extremely hazardous in case of ingestion. Very hazardous in case of skin contact (irritant), of inhalation.
Special Remarks on Toxicity to Animals: Not available.
Special Remarks on Chronic Effects on Humans: Not available.
Special Remarks on other Toxic Effects on Humans: Not available.
Section 12: Ecological Information
Ecotoxicity: Ecotoxicity in water (LC50): 2 mg/l 96 hours [Guppy].
BOD5 and COD: Not available.
Products of Biodegradation: Possibly hazardous short/long term degradation products are to be expected.
Toxicity of the Products of Biodegradation: The products of degradation are more toxic.
Special Remarks on the Products of Biodegradation: Not available.
Section 13: Disposal Considerations
Waste Disposal:
Section 14: Transport Information
DOT Classification: CLASS 5.2: Organic peroxide. Type C
Identification: : Organic peroxide type C, solid (Dibenzoyl peroxide) UNNA: UN3104 PG: II
Special Provisions for Transport: Not available.
Section 15: Other Regulatory Information
Federal and State Regulations:
Pennsylvania RTK: Benzoyl peroxide Massachusetts RTK: Benzoyl peroxide New Jersey: Benzoyl peroxide TSCA 8(b)
inventory: Benzoyl peroxide
Other Regulations: OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).
Other Classifications:
WHMIS (Canada):
CLASS C: Oxidizing material. CLASS D-2B: Material causing other toxic effects (TOXIC). CLASS F: Dangerously reactive
R9- Explosive when mixed with combustible material. R38- Irritating to skin. R41- Risk of serious damage to eyes.
HMIS (U.S.A.):
Health Hazard: 3
Fire Hazard: 1
Reactivity: 3
Personal Protection: E
National Fire Protection Association (U.S.A.):
Health: 2
Flammability: 2
Reactivity: 2
Specific hazard:
Protective Equipment:
Gloves (impervious). Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent. Wear appropriate
respirator when ventilation is inadequate. Safety glasses.
Section 16: Other Information
References: Not available.
Other Special Considerations: Not available.
Created: 10/09/2005 04:21 PM
Last Updated: 06/09/2012 12:00 PM
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