Material Safety Data Sheet chemusa
Section I. Chemical Product and Company Identification
VAROX?A75
Product Name/ 70768
Code
Trade Name
94-36-0
CAS#
Supplier R.T. VANDERBILT COMPANY, INC.
In Case of Call: (203) 853-1400
30 WINFIELD STREET Emergency
NORWALK, CT 06855
Not available.
Synonym
Dibenzoyl Peroxide
Chemical name
Not available.
Chemical Family
Chemical Formula Not applicable.
Industrial applications: Polymerization initiator
Material Uses
TSCA 8(b) inventory: VAROX?A75
TSCA Status
Section II. Composition and Information on Ingredients
Name CAS # % by Weight
benzoyl peroxide 94-36-0 75
water 7732-18-5 25
Section III. Hazards Identification
White granular solid. Organic peroxide. Heat or contamination by strong acids causes gaseous
Emergency Overview
decomposition. Dust suspended in air in critical proportions and in the presence of an ignition source may
present an explosion hazard. Causes eye and respiratory tract irritation. May cause allergic skin reaction.
Section IV. First Aid Measures
Check for and remove any contact lenses. Flush with running water for at least 15 minutes. Do not use an
Eye Contact
eye ointment. Seek medical attention.
After contact with skin, wash immediately with plenty of water. Gently and thoroughly wash the contaminated
Skin Contact
skin with running water and non-abrasive soap. Be particularly careful to clean folds, crevices, creases and
groin. Cover the irritated skin with an emollient. If irritation persists, seek medical attention. Wash
contaminated clothing before reusing.
Allow the victim to rest in a well ventilated area. Seek immediate medical attention
Inhalation
Do not induce vomiting. Immediately give two glasses of water, a little at a time. Never give anything by
Ingestion
mouth to an unconscious person. Call a physician. If vomiting occurs spontaneously, lower head below waist
to prevent fluid from entering the lungs
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VAROX?A75 Page Number: 2
Section V. Fire and Explosion Data
Decomposition products are flammable and can self-ignite.
Flammability of the Product
The lowest known value is 80癈 (176癋) (benzoyl peroxide).
Autoignition Temperature
Not available.
Flash Point
Not available.
Flammable Limits
These products are carbon oxides (CO, CO2).
Products of Combustion
Explosion Hazards in Presence Risks of explosion of the product in presence of mechanical impact: Not available.
Risks of explosion of the product in presence of static discharge: Not available.
of Various Substances
Oxidizing Material
Fire Fighting Media
Do not use water jet. Use flooding quantities of water. Avoid contact with organic materials.
and Instructions
Contact with incompatible materials or exposure to temperatures exceeding SADT (71癈 see section 10) may
Special Remarks on Fire
result in a self accelerating decomposition reaction with release of flammable vapors which may autoignite.
Hazards
Special Remarks on Explosion This material may form flammable dust-air mixtures. Potential for a dust explosion may exist. Depending
Hazards upon conditions, dust may be sensitive to static discharge. As with any dry material, pouring or allowing to
free-fall or to be conveyed through chutes or pipes can accumulate and generate electrostatic sparks,
potentially causing ignition of the material itself, or of any flammable materials which may come in contact with
the material or its container.
Section VI. Accidental Release Measures
Put spilled solid in a waste disposal container.
Small Spill
Oxidizing Material Organic peroxide.
Large Spill
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 VII. Handling and Storage
Store below 100 F to maintain active oxygen content. Detached storage is preferred. Avoid excessive heat
Storage
and store out of direct sunlight in a cool well-ventilated place. Store away from combustibles and
incompatibles.
Store in tightly closed container. Avoid contact with eyes Avoid breathing dust. Avoid contact with
Handling Procedures and
combustible materials. Avoid prolonged or repeated contact with skin. Keep container closed. Use only with
Equipment
adequate ventilation. Wash thoroughly after handling. Avoid contact of spilled material and runoff with soil
and surface waterways.
Section VIII. Exposure Controls/Personal Protection
Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below
Engineering Controls
recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep
exposure to airborne contaminants below the exposure limit.
Splash goggles. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.
Personal Protection
Gloves.
benzoyl peroxide
TLV / PEL
TWA: 5 (mg/m3) from OSHA (PEL)
TWA: 5 (mg/m3) from ACGIH
TWA: 5 (mg/m3) from RQMT
Consult local authorities for acceptable exposure limits.
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VAROX?A75 Page Number: 3
Section IX. Physical and Chemical Properties
White. Solid. (Granules.)
Appearance
Not applicable.
Molecular Weight
Not applicable.
pH (1% soln/water)
Not available.
Boiling/Condensation Point
Decomposes.
Melting Point
41.2 lbs/ cu ft (bulk density)
Specific Gravity
Not available.
Density
Not applicable.
Vapor Pressure
Not available.
Vapor Density
Not available.
Volatility
Not available.
Odor
Not available.
Evaporation Rate
Not available.
Viscosity
Not available.
Water/Oil Dist. Coeff.
Insoluble in water.
Solubility
Section X. Stability and Reactivity Data
Unstable.
Stability
Self accelerating decomposition temperature is 71癈 (159癋) in a 50 lb. container.
Instability Temperature
Contamination with incompatible materials may result ina violent self-accelerating decomposition reaction or
Conditions of Instability
in product degradation.
Strong acids, strong alkalis, strong oxidizers, amines, accelerators / promoters and reducing agents.
Incompatibility with Various
Substances
Not available.
Corrosivity
Special Remarks on Reactivity Hazardous decomposition products may include carbon monoxide, carbon dioxide, benzoic acid, and other
flammable liquids and vapors.
Section XI. Toxicological Information
Eye contact. Inhalation. Ingestion.
Routes of Entry
WARNING: THE LC50 VALUES HEREUNDER ARE ESTIMATED ON THE BASIS OF A 4-HOUR
Toxicity to Animals
EXPOSURE.
Acute oral toxicity (LD50): >950 mg/kg [Rat].
Acute toxicity of the dust (LC50): 23400 mg/m3 4 hour(s) [Rat].
Special Remarks on Toxicity to Not available.
Animals
Acute Effects
This product is a severe eye irritant.
Eye Contact
This product is not expected to be a primary skin irritant based on animal data.
Skin Contact
May cause allergic skin reaction. Repeated exposure of humans to benzoyl peroxide (lowest sensitizing
Sensitization
concentration: 1%) in controlled skin contact studies produced skin allergy. Case reports also exist of
allergic skin reactions in humans exposed to benzoyl peroxide.
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VAROX?A75 Page Number: 4
Product may be slightly toxic based on animal data.
Ingestion
This product causes respiratory tract irritation.
Inhalation
Not available.
Remarks
CARCINOGENIC EFFECTS: Classified A4 (Not classifiable for human or animal.) by ACGIH, 3 (Not
Chronic Effects on
classifiable for human.) by IARC [benzoyl peroxide].
Humans
MUTAGENIC EFFECTS Not available.
:
DEVELOPMENTAL TOXICITY Not available.
:
REPRODUCTIVE TOXICITY Not available.
:
Benzoyl Peroxide - Rats fed a diet containing benzoyl peroxide for 2-years showed an increased incidence of
Remarks
testicular atrophy at the highest dose (2800 mg/kg) that may have been due to the destruction of tocopherol in
the diet by benzoyl peroxide. Benzoyl peroxide was tested for carcinogenic potential in rats and mice in a
number of studies by life-time skin application of dietary feeding, as well as subcutaneous injection or
implantation. It was not carcinogenic in any of these studies. However, repeated long-term skin application
of benzoyl peroxide along with a known carcinogen (7,12-dimethylbenz[a]anthracene) has enhanced skin
tumor production changes in standard test using animals. Both positive and negative responses occurred in
tests with animal or bacterial cells. In vitro and in vivo radiolabel metabolism studies have shown that benzoyl
peroxide is absorbed into the skin and converted to benzoic acid which is excreted though the kidneys.
Section XII. Ecological Information
96-hr LC50 (Guppy): 2.0 mg/l, moderately toxic
Ecotoxicity
Not available.
BOD and COD
Possibly hazardous short/long term degradation products are to be expected.
Products of Biodegradation
Biodegradability
Not available.
Special Remarks on the
Products of Biodegradation
Section XIII. Disposal Considerations
RCRA Hazardous Waste, D003.
Waste Information
Waste must be disposed of in accordance with federal, state and local environmental control regulations.
Not available.
Waste Stream
Section XIV. Transport Information
Class 5.2: Organic peroxide.
DOT
ORGANIC PEROXIDE
5.2
Shipping name: Organic Peroxide Type C, Solid (Dibenzoyl peroxide, <77%), 5.2, UN: 3104, PG: II
Not available.
Remarks
Not available.
Maritime transportation
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VAROX?A75 Page Number: 5
Section XV. Other Regulatory Information and Pictograms
Class: Organic peroxide.
Classification HCS (USA)
Class: Irritating substance.
Class: Sensitizing substance.
OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR
1910.1200).
Rhode Island RTK hazardous substances: BENZOYL PEROXIDE
Federal and State
Pennsylvania RTK: BENZOYL PEROXIDE: (environmental hazard)
Regulations
Florida: BENZOYL PEROXIDE
Minnesota: BENZOYL PEROXIDE
Massachusetts RTK: BENZOYL PEROXIDE
New Jersey: BENZOYL PEROXIDE
New Jersey spill list: BENZOYL PEROXIDE
TSCA 8(b) inventory: Dibenzoyl Peroxide
SARA 302/304/311/312 hazardous chemicals: BENZOYL PEROXIDE
SARA 311/312 MSDS distribution - chemical inventory - hazard identification:
BENZOYL PEROXIDE: Fire Hazard, reactive, Sudden Release of Pressure, Immediate
(Acute) Health Hazard, Delayed (Chronic) Health Hazard
SARA 313 toxic chemical notification and release reporting: BENZOYL PEROXIDE
75%
Not available.
Remarks
National Fire Protection
Hazardous Material Flammability
2
* 2
Health Hazard
Association (U.S.A.)
Information System
2 2 2
Fire Hazard
(U.S.A.) Reactivity
Health
2
Reactivity
Specific hazard
E
Personal Protection
Other regulatory EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances.
specifications
CEPA DSL: VAROX?A75
Canadian NPRI: benzoyl peroxide
Australia: VAROX?A75
Japan (MITI): VAROX?A75
Protective Clothing
(Pictograms)
Section XVI. Other Information
Not available.
References
Not available.
Other Special
Considerations
Validated by Erin A. Bendig on 4/5/2004. Verified by Erin A. Bendig.
Previous Validation Date: No Previous Validation. Printed 4/5/2004.
Information Contact (203) 853-1400
Corporate Risk Management Department
Notice to Reader
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VAROX?A75 Page Number: 6
Information presented herein has been compiled from sources considered to be dependable and is accurate and reliable to the best of our knowledge
and belief but is not guaranteed to be so. Nothing herein is to be construed as recommending any practice or any product in violation of any patent or
in violation of any law or regulation. It is the user's responsibility to determine for himself the suitability of any material for a specific purpose and to
adopt such safety precautions as may be necessary. We make no warranty as to the results to be obtained in using any material and, since conditions
of use are not under our control, we must necessarily disclaim all liability with respect to the use of any material supplied by us.
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