Resin-supplies.co.uk

AUTOMOTIVE BODYFILLERS LIMITED
Manufacturers of the STEVENS Range of Products
Unit 4, Millbuck way, Springvale Industrial Estate, Sandbach, Cheshire, CW11 3HT Telephone: (01270) 766685 Fax: (01270) 766685 DIBENZOYL PEROXIDE,
50% PASTE WITH DIISOBUTYL PHTHALATE
1. Identification of the substance.
Product label name:
Dibenzoyl peroxide, 50% paste with diisobutyl phthalate
2.COMPOSITION/INFORMATION ON INGREDIENTS
This product is to be considered as a preparation in conformance to EC directives.
Chemical description Dibenzoyl peroxide, 50% paste with diisobutyl phthalate
Composition/information on ingredients
Number % w/w CAS-number Chemical name
1 50.0 94-36-0 Dibenzoyl peroxide
2 27.0 84-69-5 Diisobutyl phthalate
Number EEC-number Annex-1 number Symbol(s) Risk phrase(s)
1 2023276 617-008-00-0 E Xi R2 R36 R43 R7
2 2015532 none none
Other information Balance: non-hazardous ingredients.
3. HAZARDS IDENTIFICATION
May cause fire.
Irritating to eyes.
May cause sensitisation by skin contact.
4. FIRST AID MEASURES
Symptoms Irritating to eyes. May cause sensitisation by skin contact.
and effects

FIRST AID

General In all cases of doubt, or when symptoms persist, seek medical attention.

Inhalation
Move to fresh air, rest, half upright position, loosen clothing. Seek medical advice
after significant exposure.

Skin
Remove contaminated clothing, wash with soap and copious amounts of water. In case
of skin eruption seek medical advice.

Eye
Rinse thoroughly with plenty of water. Eyelids should be held away from the eyeball to
ensure thorough rinsing. Seek medical advice if irritation develops.
Ingestion DO NOT induce vomiting because of risk of aspiration. Seek medical advice.
AUTOMOTIVE BODYFILLERS LIMITED
Manufacturers of the STEVENS Range of Products
Unit 4, Millbuck way, Springvale Industrial Estate, Sandbach, Cheshire, CW11 3HT Telephone: (01270) 766685 Fax: (01270) 766685
Advice to physician. No additional information available.
5. FIRE-FIGHTING MEASURES

Extinguishing media
Waterspray, foam, fire-extingiushing powder, carbon dioxide.
Extinguish a small fire with powder or carbon dioxide then apply water to prevent re-
ignition.
Unsuitable Halones
extinguishing media

Special exposure
If involved in a fire, it will support combustion. In case of fire and/or haz-
ards
explosion do not breathe fumes.
Hazardous decomposition/ not determined
combustion products

Protective equipment
Wear suitable protective clothing.
Other information Cool closed containers with water.
6. ACCIDENTAL RELEASE MEASURES

Personal precautions
For personal protection see Section 8.
Environmental precautions Collect as much as possible in a clean container for (preferable)
reuse or disposal. Do not empty into drains.
Methods for cleaning up Sweep up with dustpan and brush off inert material, flushing the
remainder with water. Absorb the remainder with e.g. vermiculite.
7. HANDLING AND STORAGE

Handling
Never weigh out in the storage room. Keep product and emptied container away
from heat and sources of ignition. No sparking tools should be used. Never bring peroxide
into direct contact with accelerator during processing. Weigh out and add peroxide and ac-
celerator separately.

Fire and explosion
Use explosion protected equipment. Keep away from sources prevention
of ignition. No smoking.
Storage requirements Keep away from reducing agents (e.g. amines), acids, alkalis and
heavy metal compounds (e.g. accelerators, driers, metal soaps). Store on accordance with lo-
cal/national regulations. Store in a dry, well-ventilated place away from sources of heat and
direct sunlight. Do not mix with peroxide accelerators, Do not mix with reducing agents.
Keep container tightly closed in a cool, well-ventilated place. Keep container upright to pre-
vent leakage.
AUTOMOTIVE BODYFILLERS LIMITED
Manufacturers of the STEVENS Range of Products
Unit 4, Millbuck way, Springvale Industrial Estate, Sandbach, Cheshire, CW11 3HT Telephone: (01270) 766685 Fax: (01270) 766685
Other information When using do not eat, drink or smoke. Wash thoroughly after handling.
Keep working clothes separate and do not take them home.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Engineering controls
Explosion proof ventilation recommended
Exposure limits Dibenzoyl peroxide MEL-TWA 5.0 mg/m³
9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance
Smooth, unctuous paste. Density 1150-1170 kg/m (20 C)
Colour Bulk density not determined
Odour Faint Solubility in water Insoluble
Boiling point/range Do not distil (Decomposes) Solubility in other solvents
Melting point/range -10 C pH value slightly Acidic character
Flash point Above the SADT value Partition coefficient not determined
n-octanol/water
Flammability not determined Relative vapour density not determined
( air = 1 )
Autoignition temperature > 380 C Viscosity thixotropic paste
Explosive properties no Active oxygen content 3.24-3.37%
Explosion limits not applicable Peroxide content 49.0-51.0%
Oxidising properties not applicable SADT 50 C. See also Section 10:
Other information.
Vapour pressure not determined Specific conductivity not determined.

10. STABILITY AND REACTIVITY

Stability A dangerous self-accelerating decomposition reaction and, under certain circum-
stances, explosion or fire can be caused by direct contact with incompatible substances or by
thermal decomposition at and above the following temperature: +50 C.
Conditions to avoid Violent reactions may be expected with acid, alkali, heavy metals and
reducing agents. Avoid contact with rust. Do not mix with peroxide accelerators. Do not mix
with reducing agents.
Materials to avoid Use only Stainless steel 316, PVC, polyethylene or glass-lined equipment.
Hazardous decomposition not determined
AUTOMOTIVE BODYFILLERS LIMITED
Manufacturers of the STEVENS Range of Products
Unit 4, Millbuck way, Springvale Industrial Estate, Sandbach, Cheshire, CW11 3HT Telephone: (01270) 766685 Fax: (01270) 766685
products

Other information The SADT (self accelerating decomposition temperature) is an experi-
mentally derived temperature at which the product in a typical package will undergo self ac-
celerating decomposition.
11.TOXICOLOGICAL INFORMATION
Acute toxicity
Oral rat:> 5000 mg/kg
Inhalation rat:> 24.3 mg/l
Irritation
Skin Non-irritating (4 hours exposure time)
Eyes Mildly irritating ( 5 min exposure time); Moderately irritating
Genotoxicity Ames test: not mutagenic
Other toxicological information
12. ECOLOGICAL INFORMATION

Name
Based on: Dibenzoyl peroxide 78%
Ecotoxicity
fish
Acute toxicity, 96h LC50 = 2.0 mg/l. (Poecilia reticulata.)
bacteria Activated sludge respiration inhibition test EC50 = 35 mg/l.
Fate
Degradation Biotic Readily biodegradable (Closed bottle test)

13. DISPOSAL CONSIDERATIONS

Product Probably in controlled incineration but according to local regulations.
Sweep up with dustpan and brush off inert material, flushing the remainder with water. Ab-
sorb the remainder with e.g. vermiculite.
Contaminated Collect for recycling or most probably controlled incineration.
packaging
Other information Dilute before burning with organic solvents. Controlled incineration ac-
cording to local regulations is always preferred. If not possible burn in small portions on a
remote place, using a torch with a long rod to ignite the material.
14 Transport Information
AUTOMOTIVE BODYFILLERS LIMITED
Manufacturers of the STEVENS Range of Products
Unit 4, Millbuck way, Springvale Industrial Estate, Sandbach, Cheshire, CW11 3HT Telephone: (01270) 766685 Fax: (01270) 766685

Land Transport R(isk) phrases(s)
ADR class
5.2 ADR item number 8b R7. May cause fire.
R36. Irritating to eyes.
R43. May cause some sensitisation by skin contact.
RID class 5.2 RID item number 8b
Hazard Identification No Substance Identification No. Symbol(s)

Sea Transport
IMO/IMDG code page 5228 Class 5.2
Packing Group II UN number 3108
EMS 5.2 - 01 MFAG 735
Marine pollutant: no
Proper shipping name: Organic peroxide type e, solid; (Dibenzoyl peroxide)
15 REGULATORY INFORMATION

Product label name
Dibenzoyl peroxide,50% paste with diisobutyl phthalate
Labelling according to EC directives

Annex-1 number
not applicable
Classification based on

Other information

The information included in this Safety Data Sheet is accurate to the best of our knowledge at
the time of compilation.
Further advice pertaining to the use of this material may be obtained from our technical de-
partment

Source: http://www.resin-supplies.co.uk/HSDS%20pdfs/BPO%20Hardener%20paste%20HSDS.pdf

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