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MSDS 
:
 2,2-Di(tert-butylperoxy)butane, 50% solution in aromatic free mineral
CAS 
:
 78-93-3
SYNONYMS 
:
 Di-tert-butyl sec-butylidene diperoxide
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 78-93-3 |Methyl ethyl ketone | 4% | 201-159-0 |
|----------------|--------------------------------------|----------|-----------|
| 2167-23-9 |2,2-Di(tert-butylperoxy)butane | 48-52 | 218-507-2 |
|----------------|--------------------------------------|----------|-----------|
| 31807-55-3 |Isododecane | 43% | 250-816-8 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: XI O
Risk Phrases: 10 36/38 7

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Flammable. Irritating to eyes and skin. May cause fire.

Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. May be harmful if absorbed through the skin.
Ingestion:
May cause irritation of the digestive tract.
Inhalation:
Causes respiratory tract irritation. May be harmful if inhaled. May
cause nausea, dizziness, and headache.
Chronic:
Prolonged or repeated skin contact may cause dermatitis.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes.
Ingestion:
Do not induce vomiting. Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move 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 other material may
cause fire. Will burn if involved in a fire. Flammable liquid and
vapor.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Remove all sources of ignition.
Use a spark-proof tool.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use with adequate ventilation. Ground and bond
containers when transferring material. Use spark-proof tools and
explosion proof equipment. Avoid contact with eyes, skin, and
clothing. Take precautionary measures against static discharges.
Keep away from heat, sparks and flame. Avoid breathing vapor or mist.
Storage:
Keep away from sources of ignition. Do not store near combustible
materials. Store in a tightly closed container. Store in a dry area.
Refrigerator/flammables. Keep away from reducing agents. Do not
exceed 30C (86F).

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or
utilizing this material should be equipped with an eyewash facility
and a safety shower.
Exposure Limits
CAS# 78-93-3:
United Kingdom, WEL - TWA: 200 ppm TWA; 600 mg/m3 TWA
United Kingdom, WEL - STEL: 300 ppm STEL; 899 mg/m3 STEL
United States OSHA: 200 ppm TWA; 590 mg/m3 TWA
Belgium - TWA: 200 ppm VLE; 600 mg/m3 VLE
Belgium - STEL: 300 ppm VLE; 900 mg/m3 VLE
France - VME: 200 ppm VME; 600 mg/m3 VME
Germany: 200 ppm TWA; 600 mg/m3 TWA
Germany: Skin absorber
Japan: 200 ppm OEL; 590 mg/m3 OEL
Malaysia: 200 ppm TWA; 590 mg/m3 TWA
Netherlands: 200 ppm MAC; 590 mg/m3 MAC
Russia: 200 mg/m3 TWA
Spain: 200 ppm VLA-ED; 600 mg/m3 VLA-ED
Spain: 300 ppm VLA-EC; 900 mg/m3 VLA-EC
CAS# 2167-23-9:

CAS# 31807-55-3:


Personal Protective Equipment

Eyes:
Wear chemical splash goggles.
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 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: clear
Odor: faint odor
pH: Not available.
Vapor Pressure: Not available.
Viscosity: 2.16 mPa.s 20 deg C
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: > 400 deg C (> 752.00 deg F)
Flash Point: 43 deg C ( 109.40 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Immiscible.
Specific Gravity/Density: 0.805
Molecular Formula: C12H26O4
Molecular Weight: 234.34

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
A dangerous self-accelerating decomposition reaction and, under
certain circumstances, explosion or fire can be caused by direct
contact with incompatible substances or by thermal decomposition at
and above the SADT (see Section 16).
Conditions to Avoid:
Ignition sources.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong reducing agents, strong acids, strong
bases.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 78-93-3: EL6475000
CAS# 2167-23-9 unlisted.
CAS# 31807-55-3 unlisted.
LD50/LC50:
CAS# 78-93-3: Draize test, rabbit, eye: 80 mg; Draize test, rabbit,
skin: 500 mg/24H Moderate; Draize test, rabbit, skin: 402 mg/24H
Mild; Inhalation, mouse: LC50 = 32 gm/m3/4H; Inhalation, rat: LC50 =
23500 mg/m3/8H; Oral, mouse: LD50 = 3000 mg/kg; Oral, rat: LD50 =
2737 mg/kg; Skin, rabbit: LD50 = 6480 mg/kg.
CAS# 2167-23-9.
CAS# 31807-55-3.
Carcinogenicity:
Methyl ethyl ketone -
Not listed by ACGIH, IARC, or NTP.
2,2-Di(tert-butylperoxy)butane -
Not listed by ACGIH, IARC, or NTP.
Isododecane -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.
USA RQ: CAS# 78-93-3: 5000 lb final RQ; 2270 kg final RQ

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI O
Risk Phrases:
R 10 Flammable.
R 36/38 Irritating to eyes and skin.
R 7 May cause fire.
Safety Phrases:
S 3/7 Keep container tightly closed in a cool,
well-ventilated place.
S 14A Keep away from acids, reducing agents and
polymerisation catalysts.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
WGK (Water Danger/Protection)
CAS# 78-93-3: 1
CAS# 2167-23-9: No information available.
CAS# 31807-55-3: 1
Canada
CAS# 78-93-3 is listed on Canada's DSL List.
CAS# 2167-23-9 is listed on Canada's NDSL List.
CAS# 31807-55-3 is listed on Canada's NDSL List.
CAS# 78-93-3 is listed on Canada's Ingredient Disclosure List.
CAS# 2167-23-9 is not listed on Canada's Ingredient Disclosure List.
CAS# 31807-55-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 78-93-3 is listed on the TSCA inventory.
CAS# 2167-23-9 is listed on the TSCA inventory.
CAS# 31807-55-3 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

Text for R-phrases from Section 2
MSDS Creation Date: 7/26/2000 Revision #1 Date: 3/18/2003

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 way shall the company 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 the company has been advised of
the possibility of such damages.
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