SAFETY DATA SHEET
CATALYST MEKP
1 IDENTIFICATION OF THE SUBSTANCE AND OF THE COMPANY
Product Name: Catalyst (Methylethylketoneperoxide)
Supplier: The Glass Fibre Roofing Company Ltd
Units 1 & 2 Poplar Road
Caerphilly
Mid Glamorgan
CF83 1LF
029 20888020
glassfibreroofing.co.uk
2 COMPOSITION/INFORMATION ON INGREDIENTS
Substance/preparation: Liquid mixture.
Chemical Name CAS No Concentration EC Number Symbol R Phrases
Methylethylketoneperoxide 1338-23-4 30%-<35% 215-661-2 O,C,Xn R7, R22, R34
For the full text for all R-phrases, refer to section 16.
3 HAZARDS IDENTIFICATION
Symbols(s)

C Corrosive O Oxidizing
R Phrase(s)
R7 May cause fire
R22 Harmful if swallowed
R34 Causes burns
General information: Take of all contaminated clothing immediately. Remove affected person from source of contamination. Get medical attention immediately. Bring these instructions. Place unconscious person on the side in the recovery position and ensure breathing can take place.
Inhalation: Move injured person to fresh air immediately. Call a physician immediately.
Ingestion: Immediately rinse mouth and drink plenty of water. Keep person under observation. Do not induce vomiting. If person is unconscious and vomiting occurs, place in the recovery position. Seek medical advice immediately.
Skin contact: Remove contaminated clothing immediately and wash with soap and water. Consult a physician for specific advice. Burns: Flush with water immediately. While flushing, remove clothes that do not adhere to affected area. Call an ambulance. Continue flushing during transport to hospital.
Eye contact: Immediately flush with plenty of water for up to 15minutes. Remove any contact lenses and open eyes wide apart. Seek medical advice.
5 FIRE FIGHTING MEASURES
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Extinguishing media which must not be used: High volume water jet.
Specific hazards: Cool closed containers exposed to fire with water spray. Do not allow run-off from fire fighting to enter drains or water courses.
Special protective equipment for fire-fighters: Use personal protective equipment
6 ACCIDENTAL RELEASE MEASURES
Personal precautions: Wear protective clothing as described in section 8 of this safety data sheet. In case of spills, beware of slippery floors and surfaces.
Environmental precautions: The product should not be dumped in nature but collected and delivered according to agreement with the local authorities.
Spill clean up methods: For waste disposal, see section 13. When dealing with a spillage, please consult the section relating to suitable protective measures. Absorb spillage with non-combustible, absorbent material (eg sand, earth, diatomaceous earth, vermiculite). Remove mechanically and with care (eg with clean polyethylene plastic shovel). Ventilate well.
Additional advice: Never add other substances or waste material to product residue. Move product residue to a safe place and dispose of properly.
7 HANDLING AND STORAGE
Requirements for storage areas and containers: Electrical instillations / working materials must comply with technological safety standards. Containers which are opened must be carefully resealed and kept upright to prevent leakage. No smoking.
Storage precautions: Store apart from other dangerous and incompatible substances. Avoid impurities (eg rust, dust, ash), risk of corrosion.
Storage temperature: <30 deg C
Remarks: Liquid up to –25 deg C.
8 EXPOSURE CONTROLS/PERSONAL PROTECTION
Occupational exposure limits:
Component Control parameters
Methylethylketoneperoxide STEL (1998): 0.2ppm (1.5mg/m3)
Engineering measures: Provide adequate ventilation, including appropriate local extraction, to ensure that the defined workplace exposure limit is not exceeded.
Respiratory Equipment: Short duration filter unit: Filter A
Hand protection: Skin should be washed after contact. Suitable protective gloves must be worn. Chemical resistant. (Butyl rubber, 0.5mm thick, breakthrough time >=8hour)
Eye protection: Wear tight fitting goggles or face shield.
Skin and body protection: Protective suit.
Hygiene measures: Wash contaminated clothing before use. Wash at the end of each work shift and before eating, smoking and using the toilet.
9 PHYSICAL AND CHEMICAL PROPERTIES
Appearance
Form Viscous liquid
Colour Colourless
Safety data
PH: Not applicable.
Miscibility in water: immiscible.
Boiling point/range: Not applicable, decomposition.
Flash point: 59 deg C Method: ISO 3679, Seta-Flash.
Lower explosion limit: Not applicable.
Upper explosion limit: Not applicable.
Density: 1.06g/cm3 at 20 deg C.
Solubility in other solvents: Medium: Phthalates. Mixable.
Viscosity, dynamic: 23mPa.s at 20 deg C.
Refraction index: 1,458 at 20 deg C.
10 STABILITY AND REACTIVITY
Conditions to avoid: Keep away from heat and sources of ignition.
Materials to avoid: Accelerators, strong acids and bases, heavy metal salts, reduction mediums. Avoid impurities (eg rust, dust, ash), risk of corrosion.
Hazardous decomposition: Irritant, caustic, flammable, noxious / toxic gases and vapours can develop in the case of fire and decomposition.
Hazardous reactions: Vapours may form explosive mixture with air. Stable under recommended storage conditions.
11 TOXICOLOGICAL INFORMATION
Acute oral toxicity: LD50 rat
Dose: 1.17 mg/kg
Test substance: methylethylketoneperoxide (40% in dimethylphthalate)
Acute inhalation toxicity: LC50 rat
Exposure time 4 h
Test substance: methylethylketoneperoxide (40% in dimethylphthalate)
Aerosol
Nominal concentraton
Acute dermal toxicity: LD50 rat
Dose: 1.8 – 3.6 mg/kg
Test substance: methylethylketoneperoxide (60% in dimethylphthalate / diacetone alcohol)
Did not cause sensitisation on laboratory animals.
AMES – Test: rat
Result: Not mutagenic in AMES Test.
12 ECOLOGICAL INFORMATION
Elimination information (persistence and biodegradability)
Biodegradability: Result: Steadily biodegradable.
Test substance: Test substance: methylethylketoneperoxide
Method: Closed bottle test.
Ecotoxicity effects
Toxicity to fish: LC50
Dose: 44.2 mg/l
Exposure time: 96 h
Test substance: Test substance: methylethylketoneperoxide (33% in dimethylphthalate)
Water contaminating class: WGK 2, water endangering
13 DISPOSAL CONSIDERATIONS
Advice on disposal and packaging: Dispose of in conjunction with appropriate waste disposal authorities and in accordance with disposal regulations.
14 TRANSPORT INFORMATION
Land transport
ADR / GGVS:
Class: 5.2
Packaging group: II
Classification code: P1
Risk No: 539
UN No: 3105
Description of the goods: ORGANIC PEROXIDE TYPE D, LIQUID (methylethylketoneperoxide)
RID / GGVE
Class: 5.2
Packaging group: II
Classification code: P1
Risk No: 539
UN No: 3105
Description of the goods: ORGANIC PEROXIDE TYPE D, LIQUID (methylethylketoneperoxide)
Sea transport
Class: 5.2
Packaging group:
Classification code:
Risk No:
UN No: 3105
EmS: F-J S-R
Marine pollutant: No
Proper technical name: ORGANIC PEROXIDE TYPE D, LIQUID (methylethylketoneperoxide)
Air transport
ICAQ / IATA
Class: 5.2
Packaging group:
Classification code:
Risk No:
UN No: 3105
Proper technical name: ORGANIC PEROXIDE TYPE D, LIQUID (methylethylketoneperoxide)
15 REGULATORY INFORMATION
Labelling according to EC Directives:
Symbols(s): C Corrosive
O Oxidizing

Corrosive Oxidizing
Risk phrases R7 May cause fire.
R22 Harmful if swallowed.
R34 Causes burns.
Safety phrases: S3/7 Keep container tightly closed in a cool place.
S14 Keep away from strong acids, bases, heavy metal salts and other reducing substances.
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39 Wear suitable protective clothing, gloves and eye/face protection.
S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
S50 Do not mix with activators and catalyst.
16 OTHER INFORMATION
R Phrases corresponding to the number shown in section 2.
Risk phrases R7 May cause fire.
R22 Harmful if swallowed.
R34 Causes burns.
Issued by: The Glass fibre Roofing Company Ltd
Revision date: 10/10/2010
Disclaimer
The information in this document has been compiled on the basis of our current knowledge and
is believed to be in accordance with the requirements of the Dangerous Substances directive,
Dangerous Preparations Directive and Safety Data Sheets Directive. The information relates
to the specific material designated and may not be valid for such material used in combination
with any other materials or in any particular conditions or process. The conditions and extent
of storage and use of material are outside of our control and within the control of the possessor
or user. Consequently it is the responsibility of the possessor or user to satisfy themselves as
to the completeness of such information and the suitability of the material for their own
particular circumstances, conditions or use.