MSDS Name: Benzoyl Peroxide (Wet)
Catalog Numbers: B274 1LB, B274-1LB, B2741LB, NC9747998
Synonyms: Dibenzoyl peroxide, benzoic acid peroxide, benzoyl superoxide
Company Identification:
              Fisher Scientific
              1 Reagent Lane
              Fair Lawn, NJ 07410
For information, call: 201-796-7100
Emergency Number: 201-796-7100
For CHEMTREC assistance, call: 800-424-9300
For International CHEMTREC assistance, call: 703-527-3887

Section 4 - First Aid Measures

Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin: Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion: Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation: Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician: Treat symptomatically and supportively.

Section 5 - Fire Fighting Measures

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with combustible materials may cause a fire. Will burn if involved in a fire. This material poses an explosion hazard when dry. Flammable solid. This material is an explosion hazard when exposed to heat, mechanical shock, friction or when agitated.
Extinguishing Media: Use water spray to cool fire-exposed containers. Use water spray, dry chemical, carbon dioxide, or chemical foam. Do NOT use halogenated agents.

Section 6 - Accidental Release Measures

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks: Remove all sources of ignition. Provide ventilation. Do not use combustible materials such as paper towels to clean up spill. Use only non-sparking tools and equipment. In the event of spillage, spilled material should be mixed with water-wetted vermiculite, swept up, and placed in a container for immediate disposal.

Section 7 - Handling and Storage

Handling: Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Use caution when opening. Can explode without warning when caps of old containers are unscrewed. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage: Keep away from heat and flame. Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep refrigerated. (Store below 4°C/39°F.)

Section 8 - Exposure Controls, Personal Protection

Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits

Chemical Name	ACGIH	NIOSH	OSHA - Final PELs
Benzoyl peroxide	5 mg/m3 TWA	5 mg/m3 TWA 1500 mg/m3 IDLH	5 mg/m3 TWA
Water	none listed	none listed	none listed

OSHA Vacated PELs: Benzoyl peroxide: 5 mg/m3 TWA Water: No OSHA Vacated PELs are listed for this chemical.
Personal Protective Equipment
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin: Wear appropriate protective gloves to prevent skin exposure.
Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators: Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Section 9 - Physical and Chemical Properties

Physical State: Powder
Appearance: white
Odor: weak odor
pH: Not available.
Vapor Pressure: Not available.
Vapor Density: Not available.
Evaporation Rate:Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point:104-106 deg C
Autoignition Temperature: 380 deg C ( 716.00 deg F)
Flash Point: Not applicable.
Decomposition Temperature:Not available.
NFPA Rating: (estimated) Health: 1; Flammability: 4; Reactivity: 4
Explosion Limits, Lower:Not available.
Upper: Not available.
Solubility: Insoluble in water.
Specific Gravity/Density:Not available.
Molecular Formula:(C6H5CO)2O2
Molecular Weight:242.0676

Section 10 - Stability and Reactivity

Chemical Stability: Stable under normal temperatures and pressures. Do not allow to dry. In its dry form, Benzoly Peroxide is highly flammable and explosive, sensitive to friction, shock and heat, and must be handled with extreme caution.
Conditions to Avoid: Mechanical shock, ignition sources, excess heat, combustible materials, reducing agents, temperatures above 100°C, organic matter.
Incompatibilities with Other Materials: Reducing agents, strong acids, bases, amines, metals, accelerators, methyl methacrylate, carbon tetrachloride and ethylene, organic matter, N,N - dimethylaniline and lithium aluminum hydride. Benzoyl peroxide is self-reactive chemical which can even explode without warning when the caps of old jars are unscrewed. It is extremely important to keep it pure, contaminants can lead to hazardous, unexpected explosions.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, benzene.
Hazardous Polymerization: Has not been reported.

Section 11 - Toxicological Information

RTECS#:
CAS# 94-36-0: DM8575000
CAS# 7732-18-5: ZC0110000
LD50/LC50:
CAS# 94-36-0:
Draize test, rabbit, eye: 500 mg/24H Mild;
Oral, mouse: LD50 = 5700 mg/kg;
Oral, rat: LD50 = 7710 mg/kg;
CAS# 7732-18-5:
Oral, rat: LD50 = >90 mL/kg;
Carcinogenicity:
CAS# 94-36-0:
ACGIH: A4 - Not Classifiable as a Human Carcinogen
IARC: Group 3 carcinogen CAS# 7732-18-5: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Epidemiology: No information found.
Teratogenicity: No information found.
Reproductive Effects: No information found.
Neurotoxicity: No information found.
Mutagenicity: No information found.
Other Studies: See actual entry in RTECS for complete information.

Section 12 - Ecological Information

No information available.

Section 13 - Disposal Considerations

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: None listed.

Section 14 - Transport Information

	US DOT	IATA	RID/ADR	IMO	Canada TDG
Shipping Name:	ORGANIC PEROXIDE TYPE C SOLID (BENZOYL PEROXIDE,65-70%)				ORGANIC PEROXIDE TYPE C, SOLID (BENZOYL PEROXIDE)
Hazard Class:	5.2				5.2
UN Number:	UN3104				UN3104
Packing Group:	II				II

Section 15 - Regulatory Information

US FEDERAL

TSCA
CAS# 94-36-0 is listed on the TSCA inventory.
CAS# 7732-18-5 is listed on the TSCA inventory.
Health & Safety Reporting List
None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
None of the chemicals in this material have a SNUR under TSCA.
SARA

Section 302 (RQ)
None of the chemicals in this material have an RQ.
Section 302 (TPQ)
None of the chemicals in this product have a TPQ.
SARA Codes
CAS # 94-36-0: flammable, sudden release of pressure.
Section 313
This material contains Benzoyl peroxide (CAS# 94-36-0, 67 75%),which is subject to the reporting requirements of Section 313 of SARA Title III and 40 CFR Part 373.
Clean Air Act:
This material does not contain any hazardous air pollutants. This material does not contain any Class 1 Ozone depletors. This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
None of the chemicals in this product are listed as Hazardous Substances under the CWA. None of the chemicals in this product are listed as Priority Pollutants under the CWA. None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
OSHA:
CAS# 94-36-0 is considered highly hazardous by OSHA.
STATE
CAS# 94-36-0 can be found on the following state right to know lists: California, New Jersey, Florida, Pennsylvania, Minnesota, Massachusetts.
CAS# 7732-18-5 is not present on state lists from CA, PA, MN, MA, FL, or NJ.
California No Significant Risk Level: None of the chemicals in this product are listed. European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:
XI E
Risk Phrases:
R 2 Risk of explosion by shock, friction, fire or
other sources of ignition.
R 36 Irritating to eyes.
R 43 May cause sensitization by skin contact.

Safety Phrases:
S 14 Keep away from ... (incompatible materials to
be indicated by the manufacturer).
S 3 Keep in a cool place.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 7 Keep container tightly closed.
S 14A Keep away from acids, reducing agents and
polymerisation catalysts.

WGK (Water Danger/Protection)
CAS# 94-36-0: 1
CAS# 7732-18-5: No information available.
Canada
CAS# 94-36-0 is listed on Canada's DSL List. CAS# 94-36-0 is listed on Canada's DSL List. CAS# 7732-18-5 is listed on Canada's DSL List. CAS# 7732-18-5 is listed on Canada's DSL List.

This product has a WHMIS classification of C, D2B, B4.
CAS# 94-36-0 is listed on Canada's Ingredient Disclosure List.
CAS# 7732-18-5 is not listed on Canada's Ingredient Disclosure List.
Exposure Limits
CAS# 94-36-0: OEL-AUSTRALIA:TWA 5 mg/m3 OEL-AUSTRIA:TWA 5 mg/m3 OE
L-BELGIUM:TWA 5 mg/m3 OEL-DENMARK:TWA 5 mg/m3 OEL-FINLAND:TWA 5 mg/m
3;STEL 10 mg/m3;Skin OEL-FRANCE:TWA 5 mg/m3 OEL-GERMANY:TWA 5 mg/m3
OEL-HUNGARY:TWA 5 mg/m3;STEL 10 mg/m3;Skin OEL-THE NETHERLANDS:TWA 5
mg/m3 OEL-THE PHILIPPINES:TWA 5 mg/m3 OEL-SWITZERLAND:TWA 5 mg/m3
OEL-UNITED KINGDOM:TWA 5 mg/m3 OEL IN BULGARIA, COLOMBIA, JORDAN, KOR
EA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI
TLV

Section 16 - Additional Information

MSDS Creation Date: 8/03/1998
Revision #4 Date: 10/19/2001
The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shall Fisher be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if Fisher has been advised of the possibility of such damages.