MATERIAL SAFETY DATA SHEET Syrgis Performance
Initiators, Inc.
NOROX? MEC Helena, A


SECTION 1 - IDENTIFICATION OF THE PRODUCT AND THE COMPANY
NOROX? MEC 870-572-2935
PRODUCT NAME TELEPHONE
Syrgis Performance Initiators, Inc. 800-424-9300
MANUFACTURER CHEMTREC (24hr) (USA)
334 Phillips 311 Rd., Helena, AR 72342 703-527-3887
ADDRESS (Maritime/International)
Methyl Ethyl Ketone Peroxide (MEKP) &
CHEMICAL NAME See section 2.
CAS NO.
Cyclohexanone Peroxide Mixture.
CHEMICAL FORMULA
Organic Peroxide - Ketone Peroxide
CHEMICAL FAMILY

SECTION 2 - COMPOSITION/INFORMATION ON INGREDIENTS
COMPONENTS CAS NO. %
Methyl Ethyl Ketone Peroxide 1338-23-4 24 - 25
Cyclohexanone Peroxide 12262-58-7 9 - 10
Dimethyl Phthalate 131-11-3 42 - 43
2,2,4-Trimethyl-1,3-pentanediol diisobutyrate 6846-50-0 18 - 20
Methyl Ethyl Ketone 78-93-3 0-2
Hydrogen Peroxide 7722-84-1 0-1
Water 7732-18-5 0-1

SECTION 3 - HAZARD IDENTIFICATION OF THE PREPARATION
Organic Peroxide. Decomposition.
PHYSICAL HAZARDS
Severe Irritant.
HEALTH HAZARDS
The ACGIH Ceiling STEL is 1.5 mg/m 3 (0.2 ppm) for Methyl Ethyl Ketone Peroxide.
EXPOSURE LIMITS
ROUTES OF EXPOSURE
Severe skin irritant, causes redness, blistering, and edema.
Skin Contact
Eye contact causes severe corrosion and may cause blindness.
Eye Contact
Human systemic effects by ingestion: changes in structure or function of esophagus,
Ingestion
nausea, or vomiting, and other gastrointestinal effects.
Moderately toxic by inhalation.
Inhalation
Prolonged inhalation of vapors may cause mucous membrane irritation and vertigo.
EFFECTS OF OVER-
There are no known medical conditions, which are recognized as being aggravated
EXPOSURE
by exposure.

SECTION 4 - FIRST-AID MEASURES
Immediately remove any contaminated clothing. Wash contaminated area
SKIN
thoroughly with soap and copious amounts of water for at least 15 minutes. If
irritation or adverse symptoms develop, seek medical attention.
Remove any contact lenses at once. Flush eyes with water for at least 15 minutes.
EYES
Ensure adequate flushing by separating the eyelids with fingers. If irritation or
adverse symptoms develop, seek medical attention.
INGESTION Do Not induce vomiting. Drink plenty of water. Immediately call a physician. For
aid to physician, suggest local Poison Control Center.
Remove to fresh air, if coughing, breathing becomes labored, irritation develops or
INHALATION
other symptoms develop, seek medical attention at once, even if symptoms develop
several hours after the exposure.

SECTION 5 - FIRE-FIGHTING MEASURES
>200??F (93??C), C.O.C.
FLASH POINT
Not established.
FLAMMABLE LIMITS
Not established.
AUTOIGNITION POINT
Water from a safe distance - preferably with a fog nozzle. In case of very small fires,
EXTINGUISHING MEDIA
other means such as carbon dioxide, foam or dry chemical extinguishers may be
effective. Dry chemical combined with MEKP/cyclohexanone peroxide may re-ignite.
Light water additives may be particularly effective at extinguishing
MEKP/cyclohexanone peroxide fires.




Revised on: 9/17/07 Printed On: 11/9/2007  MATERIAL SAFETY DATA SHEET
?
NOROX MEC
Firemen should be equipped with protective clothing and SCBA?? In case of fire
s.
SPECIAL FIRE FIGHTING
near storage area, cool the containers with water spray. If dry chemical is used to
PROCEDURES
extinguish an MEKP/cyclohexanone peroxide fire, the extinguished area must be
thoroughly wetted down with water to prevent re-ignition.
The heat of decomposition of the peroxides adds to the heat of the fire. Dry chemical
UNUSUAL FIRE AND EXPLOSION
fire extinguishing agent may catalyze the decomposition.
HAZARDS

SECTION 6 - ACCIDENTAL RELEASE MEASURES
Dike spill to prevent runoff from entering drains, sewers, streams, etc. Wet spilled
STEPS TO BE TAKEN IN EVENT
material with water and absorb with an inert absorbent material such as perlite,
OF SPILL OR RELEASE
vermiculite, or sand. Sweep up using non-sparking tools and place in a clean
polyethylene drum or a polyethylene pail. DO NOT place into a steel container,
lined or unlined, as a decomposition may occur. Treat any contaminated
cardboard packaging as hazardous waste. Wet container contents with additional
water prior to sealing.

SECTION 7 - HANDLING AND STORAGE
Rotate stock using the oldest material first. Avoid contact with skin, eyes and
HANDLING
clothing. Use PPE as specified in Section 8. Keep containers closed to prevent
contamination. Keep away from sources of heat, sparks or flame. Do not add to hot
solvents or monomers as a violent decomposition and/or reaction may result. When
using spray equipment, never spray raw MEKP/cyclohexanone peroxide onto curing
or into raw resin or flues. Keep in original container. DO NOT USE NEAR FOO OR DRINK. Wash thoroughly after handling.
The stability of MEKP formulations is directly related to the shipping and storage
STORAGE
temperature history. Cool storage at 80??F (27??C) or below is recommended for
longer shelf life and stability. Prolonged storage at elevated temperatures of 100??F
(38??C) and higher will cause product degradation, gassing and potential container
rupture which can result in a fire and/or explosion. Store out of direct sunlight in a
well ventilated area away from combustible and incompatible materials. DO NOT
STORE WITH FOOD OR DRINK. Refer to NFPA 432 Code for the Storage of
Organic Peroxide Formulations from the National Fire Protection Association for
additional storage information.
Unmixed, uncontaminated material, remaining at the end of the day, shall be
OTHER PRECAUTIONS
returned to a proper organic peroxide storage area. Under no circumstances should
material be returned to the original container.

SECTION 8 - EXPOSURE CONTROL/PERSONAL PROTECTION
Mechanical, general.
VENTILATION
If airborne concentrations are expected to exceed acceptable levels wear a NIOSH
RESPIRATORY PROTECTION
approved air-purifying respirator with an organic vapor cartridge or canister. When
using respirators refer to OSHA??29CFR 1910.134.
s
Safety goggles recommended. Permanent eyewash is highly recommended.
EYE PROTECTION
Protective gloves recommended, solvent resistant, such as butyl rubber, nitrile or
HAND PROTECTION
neoprene.
A safety shower and eyewash is recommended when the risk of a significant
OTHE exposure exits.

SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES
Water white liquid with a slight odor.
APPEARANCE AND ODOR:
Not established. 1.1
BOILING POINT: SPECIFIC GRAVITY:
Not established. >200oF (93??C), C.O.C.
VAPOR PRESSURE: FLASH POINT:
>1 Not established.
VAPOR DENSITY: FLAMMABLE LIMITS:
Not established. >60??C (140??F)
EVAPORATION RATE: SADT:
Not established. Not applicable
% VOLATILE BY VOLUME: pH:
Slightly soluble in water.
SOLUBILITY IN WATER:




Syrgis Performance Initiators, Inc.  MATERIAL SAFETY DATA SHEET
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NOROX MEC

SECTION 10 - STABILITY AND REACTIVITY
Stable when kept in original, closed container, out of direct sunlight at temperatures
STABILITY
below 80??F (27??C).
Contamination. Direct sunlight. Open flame. Prolonged storage above 100??F
CONDITIONS TO AVOI (38??C). Storage above SADT. Storage near flammable or combustible materials.
Dimethylaniline, cobalt napthenate and other promoters, promoted resins,
MATERIALS TO AVOI accelerators, oxidizing and reducing agents, strong acids, bases, metals, metal
alloys and salts, sulfur compounds, amines or any hot material.
Decomposition products are flammable. Acrid smoke and irritating fumes.
HAZARDOUS DECOMPOSITION
PRODUCTS
Will not occur.
HAZARDOUS POLYMERIZATION

SECTION 11 - TOXICOLOGICAL INFORMATION
Methyl Ethyl Ketone Peroxide
Hazard Data:
Inhalation: Rat--LC50: 200 ppm/4 hr, lung, thorax, respiration, or dyspnea; Mouse--LC50: 170 ppm/4 hr, lung, thorax,
respiration, or dyspnea.
Intraperitoneal: Rat--LD50: 65 mg/kg, behavioral, muscle weakness behavioral, ataxia.
Oral: Rat--LD50: 484 mg/kg; Mouse--LD50: 470 mg/kg; Human--TDLo: 480 mg/kg, changes in structure or function of
esophagus gastrointestinal, nausea or vomiting gastrointestinal.
Skin: Rabbit--LD50: 500 mg.
Cyclohexanone Peroxide
Hazard Data:
Parenteral: Mouse--LD50: 2000 mg/kg
Dimethyl Phthalate
Hazard Data:
Inhalation: Cat--LCLo: 9300 mg/m 3/6.5 hr.
Intraperitoneal: Mouse--LD50: 1380 mg/kg.
Oral: Rat & Mouse--LD50: 6800 mg/kg, somnolence behavioral, withdrawal nutritional and gross metabolic, weight
loss or decreased weight gain; Dog--LD: >1400 mg/kg; Rabbit--LD50: 4400 ?? L/kg.
Subcutaneous: Mouse--LDLo: 6500 mg/kg, dyspnea lung, thorax, respiration, or cyanosis.
2,2,4-Trimethyl-1,3-pentanediol diisobutyrate
Hazard Data:
Oral: Rat--LD50: >3200 mg/kg
Methyl Ethyl Ketone
Hazard Data:
Eye: Human: 350 ppm.
Inhalation: Rat--LC50: 23500 mg/m 3/8hr.
Intraperitoneal: Rat--LD50: 607 mg/kg; Mouse--LD50: 616 mg/kg.
Oral: Rat--LD50: 2737 mg/kg; Mouse--LD50: 4050 mg/kg.
Skin: Rabbit--LD50: 6480 mg/kg.
Hydrogen Peroxide
Hazard Data:
Inhalation: Mouse--LCLo: 227 ppm; Rat--TCLo: 67 ppm/6hr/6W-1, dermatitis, irritative of the skin.
Intraperitoneal: Mouse--LD50: 880 mg/kg.
Intravenous: Rabbit--LD50: 15 gm/kg, behavioral, convulsions or effect on seizure threshold.
Oral: Rat--LD50: 376 mg/kg, gastrointestinal, peritonitis blood, pigmented or nucleated red blood cells;
Mouse--LD50: 2 mg/kg.
Subcutaneous: Rat--LD50: 620 mg/kg; Mouse--LD50: 1072 mg/kg.
Skin: Rat--LD50: 4060 mg/kg, lung, thorax, respiration, or pulmonary emboli; Rabbit--LDLo: 500 mg/kg, behavioral,
convulsions or effect on seizure threshold.




Syrgis Performance Initiators, Inc.  MATERIAL SAFETY DATA SHEET
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NOROX MEC

SECTION 12 - ECOLOGICAL INFORMATION
No information available on the preparation itself. This product should be prevented from entering drains, sewers, streams,
etc.
Ecotoxicity: Methyl ethyl ketone peroxide: EC50 (Guppy), 44.2 mg/L/96 hr; EC50 (alga), 42,700 ??g/L/96 hr.
Environmental Fate: Methyl ethyl ketone peroxide (MEKP) was evaluated for biodegradability in a closed bottle system and
was reported to be readily biodegradable. An EC50 of 16mg MEKP/L activated sludge was reported in an activated sludge
respiration inhibition test.

SECTION 13 - DISPOSAL CONSIDERATIONS
Prevent material from entering drains, sewers, streams, etc.
Immediately dispose of waste material at a RCRA approved hazardous waste management facility in accordance with
federal, state and local regulations.

SECTION 14 - TRANSPORT INFORMATION
DOT Shipping Name: ORGANIC PEROXIDE TYPE D, LIQUI (METHYL ETHYL KETONE PEROXIDE, ?? 25%,
CYCLOHEXANONE PEROXIDE, ?? 10%)
DOT Hazard Class: 5.2
UN/NA ID No.: UN3105
DOT Packing Group: PG II
DOT RQ RQ (if shipping container is greater than 39.9 lbs)
Labels: 5.2 (Organic Peroxide)
2004 ERG GUIDE NO.: 145

SECTION 15 - REGULATORY INFORMATION
The following chemicals are subject to the reporting requirements of Section 313 of Title III of the Superfund Amendments
and Reauthorization Act of 1986 and 40 CFR Part 372.
Chemical Name CAS Number Percent
Dimethyl Phthalate 131-11-3 42 - 43
Methyl Ethyl Ketone 78-93-3 0-2
Reportable Quantity
2-Butanone Peroxide (MEKP): 10 lbs (4.54 kg)
Australian Inventory of Chemical Substances (AICS)
The ingredients in this product are listed in the Australian AICS Inventory.
Canadian Domestic Substances List (DSL)
The ingredients in this product are listed in the Canadian DSL Inventory.
Chinese Inventory of Existing Chemical Substances Manufactured or Imported in China (IECSC)
The ingredients in this product are listed in the Chinese IECSC Inventory.
European Inventory of Existing Commercial Chemical Substances (EINECS)
The ingredients in this product are listed in the European EINECS Inventory.
Japanese Exiting and New Chemical Substances (ENCS)
The ingredients in this product are listed in the Japanese ENCS Inventory.
Korean Existing Chemicals List (ECL)
The ingredients in this product are listed in the Korean ECL Inventory.
US Toxic Substances Control Act (TSCA)
The ingredients in this product are listed in the US TSCA Inventory.

Status of Carcinogicity
Not recognized as a carcinogen by the IARC, NTP or OSHA.



Syrgis Performance Initiators, Inc.  MATERIAL SAFETY DATA SHEET
?
NOROX MEC

SECTION 16 - OTHER INFORMATION
VOC Information
Using ASTM Test Method D-2369-87, but at 40??C (since MEKP decomposes rapidly above 100??C and is not a VOC), Norox?
MEC contains 4.3% VOC, by weight, or 47 grams per liter. For more information, call Syrgis Performance Initiators, Inc.
NFPA 432 Organic Peroxide Classification
Class III
NFPA 704 Rating HMIS Rating
Health Flammability Reactivity Health Flammability Reactivity
3 2 2 3 2 2
MSDS Reference: MEC MSDS 0709.1




DISCLAIMER OF LIABILITY
The information in this MSDS was obtained from sources, which we believe are reliable. However, the information is provided without any warranty, express or implied, regarding its correctness.
The conditions or methods of handling, storage, use and disposal of the product are beyond our control and may be beyond our knowledge. For this and other reasons, we do not assume responsibility and expressly
disclaim liability for loss, damage or expense arising out of or in any way connected with the handling, storage, use, or disposal of the product.
This MSDS was prepared and is to be used only for this product. If the product is used as a component in another product, this MSDS information may not be applicable.




Syrgis Performance Initiators, Inc. 

1-Hydroperoxycyclohexyl-1-hydroxycyclohexyl peroxide