Material Safety Data Sheet
Material Name: RP-105B/RP-106 Curing Agent ID: Amer-014
The MSDS format adheres to the standards and regulatory requirements of the United States and may not meet regulatory
requirements in other countries.
* * * Section 1 - Chemical Product and Company Identification * * *
Part Number: NA
Chemical Name: Organic Peroxide
Product Use: Curing agent in Polyester Resin Kit
Synonyms: Dibenzoyl Peroxide
Manufacturer Information
Ameron International Fiberglass Div Phone #: (940) 569-1471
1004 Ameron Road Fax #: (940) 569-2764
P. O. Box 878 Chemtrec 24 hr Emergency #: (800) 424-9300
Burkburnett, TX 76354
* * * Section 2 - Composition / Information on Ingredients * * *
CAS# Components Percent
94-36-0 Dibenzoyl Peroxide 40
84-74-2 Di-n-butyl Phthalate 40
7732-18-5 Water 15
1592-23-0 Octadecanoic Acid, Calcium Salt 1.9
68611-44-9 Silane, Dichlorodimethyl-, reaction products with silica 1.3
Component Information/Information on Non-Hazardous Components
This product is considered hazardous under 29 DFR 1910.1200 (Hazard Communication).
* * * Section 3 - Hazards Identification * * *
Emergency Overview: Danger! Strong oxidizer. Contact with other material may cause fire. Extremely explosion-sensitive to shock,
heat and friction. Extremely flammable. Unstable at elevated temperatures. Harmful if swallowed or inhaled. Allergen.
Exposure may produce allergic response. Causes irritation to skin, eyes, and respiratory tract.
Hazard Statements: WARNING! Organic peroxide causes eye irritation. May cause allergic skin reaction. Possible birth defect
hazard. May cause birth defects based on animal data. May cause adverse reproductive effects based on animal data.
Potential Health Effects: Eyes; Vapor or mist causes eye irritation. Splashes cause severe irritation with stinging pain and tears.
Potential Health Effects: Skin; Causes irritation with redness and pain, and skin sensitization in some individuals. Stinging or
burning sensation may occur for a brief time after application to skin.
Potential Health Effects: Ingestion; Causes irritation to the gastrointestinal tract. Symptoms may include nausea, vomiting, diarrhea,
headache, irritation and tearing of the eyes
Potential Health Effects: Inhalation; Decomposition products are toxic and inhalation of the products can produce life threatening
health effects. May be irritating to the eyes, and may cause discomfort of the nose, throat and upper respiratory tract, with
coughing and choking.
HMIS RATINGS: Health: 2 Fire: 2 Reactivity: 2 Pers. Prot.:
Hazard Scale: 0 = Minimal 1= Slight 2= Moderate 3= Serious 4 = Severe * = Chronic hazarad
* * * Section 4 - First Aid Measures * * *
Page 1 of 5 Issue Date: 22 September 2009 Revision: 9 Print Date: 22 September 2009
Material Safety Data Sheet
Material Name: RP-105B/RP-106 Curing Agent ID: Amer-014
First Aid: Eyes; Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occasionally. Get
medical attention immediately.
First Aid: Skin; Immediately flush skin with plenty of soap and water. Remove contaminated clothing and shoes. Get medical
attention. Wash clothing before reuse. Thoroughly clean shoes before reuse.
First Aid: Ingestion; Induce vomiting as directed by medical personnel, get medical attention immediately.
First Aid: Inhalation: Remove to fresh air. Get medical for any breathing difficulty.
* * * Section 5 - Fire Fighting Measures * * *
104篎 (Benzoyl Peroxide) CC
Flash Point: Method Used:
Upper Flammable Limit (UFL): 2.5% (Dibutyl Phthalate) Lower Flammable Limit (LFL): 0.5% (Dibutyl Phthalate)
176篎 (Benzoyl Peroxide) Extremely
Auto Ignition: Flammability Classification:
General Fire Hazards:
Substance is a strong oxidizer and a strong supporter of combustion.
Extinguishing Media:
Dry Chemical or carbon dioxide. Water to cool containers. Water or foam may cause frothing
Fire Fighting Equipment/Instructions:
Wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full face shield operated in the
pressure demand or other positive pressure mode.
NFPA Ratings: Health: 2 Fire: 2 Reactivity: 2 Other: Oxidizer
Hazard Scale: 0 = Minimal 1= Slight 2= Moderate 3= Serious 4 = Severe
* * * Section 6 - Accidental Release Measures * * *
Containment Procedures: Contain discharged material
Clean-Up Procedures: Remove all sources of ignition, ventilate area of leak or spill. Spill can be mixed with water-wetted
vermiculite, swept up and then placed into appropriate plastic containers for immediate disposal. The sweepings should be
wetted down further with water, disposing of immediately. Once material has been collected, wash down area with detergent
and water.
Evacuation Procedures: NA
Special Procedures: NA
* * * Section 7 - Handling and Storage * * *
Handling Procedures: Avoid strong acids, strong alkalis, polymerization accelerators (Cobalt Naphthanates, DMA, DEA.) Keep
away from heat sparks and flame. Avoid contamination. Use with adequate ventilation and explosion proof equipment. Avoid
contact with eyes, skin and clothing. Wash thoroughly after handling.
Storage Procedures: Stores best below 80篎, shelf life 1 year. Store out of direct sunlight in a cool well-ventilated place. Store away
from combustibles and incompatible materials.
* * * Section 8 - Exposure Controls / Personal Protection * * *
Exposure Guidelines: Benzoyl Peroxide OSHA PEL 5mg/m3; ACGIH TLV 5 mg/m3
Dibutyl Phthalate: OSHA PEL 5mg/m3; ACGIH TLV 5 mg/m3
Engineering Controls: A system of local and /or general exhaust is recommended to keep employee exposures below the Airborne
Exposure Limits.
PERSONAL PROTECTIVE EQUIPMENT
Personal Protective Equipment: Eyes/Face; Safety glasses
Personal Protective Equipment: Skin; Rubber gloves, appropriate chemical resistant protective clothing.
Personal Protective Equipment: Respiratory; Ventilation requirements or mist vapor mask
Personal Protective Equipment: General; Good personal hygiene
Page 2 of 5 Issue Date: 22 September 2009 Revision: 9 Print Date: 22 September 2009
Material Safety Data Sheet
Material Name: RP-105B/RP-106 Curing Agent ID: Amer-014
* * * Section 9 - Physical & Chemical Properties * * *
White paste, faint odor Faint
Appearance: Odor:
Paste NA
Physical State: pH:
NA NA
Vapor Pressure: Vapor Density:
(Benzoyl Peroxide) Decomposes explosively above 55篊 0篊
Boiling Point: Melting Point:
1.334 @ 25篊
Solubility (H2O):Slight Specific Gravity:
0篊 NA
Freezing Point: Particle Size:
NA NA
Softening Point: Evaporation Rate:
11,200-14,400 cps @ 25篊 NA
Viscosity: Bulk Density:
NA NA
Percent Volatile: Molecular Weight:
Active Oxygen Content: 2.64%
Physical Properties:
55篊/137篎
SADT:
* * * Section 10 - Chemical Stability & Reactivity Information * * *
Chemical Stability: Unstable, should be handled under specified conditions.
Chemical Stability: Conditions to Avoid: excessive heat; contaminates; ignition sources
Incompatibility: Strong acids, bases, oxidizers, amines, reducing agents, and promoters/accelerators. Contact with these may result in
a violent decomposition reaction or in product degradation.
Hazardous Decomposition: Temperatures at or above the SADT can result in the release of hazardous decomposition products which
are flammable and may autoignite.
Hazardous Polymerization: Does not occur.
* * * Section 11 - Toxicological Information * * *
Acute Toxicity
A: General Product Information: NA
B: Component LD50/LC50: Oral LD50 >950 to 5,000 mg/kg (Rats); LC50 - 4 hr > 22.4 mg/L (Rats)
Carcinogenicity
A: General Product Information: A preliminary epidemiology study found no evidence that prior use of benzoyl peroxide
was a risk factor for developing skin cancer.
B: Component Carcinogenicity: NA
Epidemiology: NA
Neurotoxicity: NA
Mutagenicity: NA
Teratogenicity: Studies have shown that high doses of Di-n-butyl phthalate given orally to rats and mice during pregnancy were
reported to produce minor abnormalities in the offspring and embryo/fetotoxic effects. Mice exposed in the diet for two
generations experienced a decrease in number of litters, smaller litter sizes, a decrease in pregnancy rate and offspring born
dead.
Other Toxicological Information: Oral dosing of Di-n-butyl phthalate or dietary administration at high levels of laboratory animals
has produced degeneration of the testes, and in some cases, reduced fertility in a number of species.
* * * Section 12 - Ecological Information * * *
Ecotoxicity: 96 hr LC50 guppy (semi-static): 2.0 mg/L, moderately toxic.
Environmental Fate: Almost 60% biodegradation was reached after 28 days in the closed bottle ready biodegradability test.
* * * Section 13 - Disposal Considerations * * *
Page 3 of 5 Issue Date: 22 September 2009 Revision: 9 Print Date: 22 September 2009
Material Safety Data Sheet
Material Name: RP-105B/RP-106 Curing Agent ID: Amer-014
US EPA Waste Number & Descriptions
A: General Product Information: Should be handled as hazardous waste and sent to an RCRA approved waste facility.
B: Component Waste Numbers: NA
Disposal instructions: Dispose of container and unused contents in accordance with federal, state and local requirements.
Incineration is the recommended method for disposal.
* * * Section 14 - Transportation information * * *
US DOT Information
Shipping Name: Polyester Resin Kit
Technical Shipping Name: Dibenzoyl Peroxide <52%/ polyester resin
Hazard Class: 3
UN/NA#: UN3269
Packing Group: III
Required Label(s): Flammable Liquid
Additional Info.: NA
International Transportation regulations
* * * Section 15 - Regulatory Information * * *
US Federal Regulations
A: General Product Information: NA
B: Component Information:
This product contains the following toxic chemical(s) subject to the reporting requirements of section 313 of the Emergency
Planning and Community Right-To-Know Act of 1986 (40 CFR 372).
Di-n-butyl phthalate (CAS# 84-74-2) % by weight: 40
Dibenzoyl peroxide (CAS# 94-36-0) % by weight: 40
State Regulations
A: General Product Information
No additional information
B: Component Information
Component CAS# CA FL MA MN NJ PA
Dibenzoyl Peroxide #94-36-0 N Y Y Y Y Y
Di-n-butyl Phthalate #84-74-2 Y Y Y Y Y Y
Other Regulations
A: General Product Information
No additional information
B: Component Information
No additional information
* * * Section 16 - Other Information * * *
Other Information
Page 4 of 5 Issue Date: 22 September 2009 Revision: 9 Print Date: 22 September 2009
Material Safety Data Sheet
Material Name: RP-105B/RP-106 Curing Agent ID: Amer-014
Reasonable care has been taken in the preparation of this information, but the manufacturer makes no warranty of
merchantability or any other warranty, expressed or implied, with respect to this information. The manufacturer makes no
representations and assumes no liability for any direct, incidental or consequential damages resulting from its use.
Key/Legend
NA = Not Applicable; NE = Not Established; EPA = Environmental Protection Agency; TSCA = Toxic Substance Control
Act; ACGIH = American Conference of Governmental Industrial Hygienists; IARC = International Agency for Research on
Cancer; NIOSH = National Institute for Occupational Safety and Health; NTP = National Toxicology Program; OSHA =
Occupational Safety and Health Administration; SADT = Self Accelerating Decomposition Temperature.
Contact Person: Douglas Boberg
Contact Phone: (940) 569-1471
This is the end of MSDA # Amer-014
Page 5 of 5 Issue Date: 22 September 2009 Revision: 9 Print Date: 22 September 2009
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