MSDS Name:tert-Butyl monoperoxymaleate 25 wt.% paste in dibutyl maleate
Synonym:Perkadox PF-DBM2

EMERGENCY OVERVIEW
Harmful if swallowed. Irritating to eyes and skin. Risk of serious damage to eyes. May cause fire.
Potential Health Effects
Eye:
Causes eye irritation. May cause irreversible eye injury.
Skin:
Causes skin irritation. May be harmful if absorbed through the skin.
Ingestion:
Harmful if swallowed. May cause irritation of the digestive tract.
Inhalation:
May cause respiratory tract irritation. May be harmful if inhaled.
Chronic:
Not available.

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:
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.

General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Exposure to heat may promote violent decomposition.
Strong oxidizer. Contact with other material may cause fire. Will burn if involved in a fire. Combustible liquid.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam. Do NOT use halogenated agents.

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. Vacuum or sweep up material and place into a suitable disposal container. Remove all sources of ignition. Use a spark-proof tool.

Handling:
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage:
Keep away from sources of ignition. Do not store near combustible materials. Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Flammables-area.
Store at temperatures below the decomposition temperature. Store at room temperature or below.

Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits CAS# 75-91-2: Russia: 5 mg/m3 TWA CAS# 105-76-0: CAS# 110-16-7: CAS# 1931-62-0: Personal Protective Equipment Eyes: Not available.
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.

Physical State: Liquid
Color: white
Odor: faint odor
pH: ca 7
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: > 400 deg C (> 752.00 deg F)
Flash Point: > 60 deg C (> 140.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 60 deg C
Solubility in water: Insoluble.
Specific Gravity/Density:
Molecular Formula: C8H12O5
Molecular Weight: 188.18

Chemical Stability:
Light sensitive. Material is heat sensitive and may decompose at elevated temperatures.
Conditions to Avoid:
Incompatible materials, temperatures above 55C, direct sunlight..
Incompatibilities with Other Materials:
Rust, iron, steel, copper, acids, alkalies, heavy metals, reducing agents, ignition or explosion may occur with readily oxidizable, organic, or flammable materials or chemical accelerants.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, peroxides, various hydrocarbons.
Hazardous Polymerization: Has not been reported

RTECS#:
CAS# 75-91-2: EQ4900000 CAS# 105-76-0: ON0875000 CAS# 110-16-7: OM9625000 CAS# 1931-62-0 unlisted.
LD50/LC50:
CAS# 75-91-2: Draize test, rabbit, eye: 7 mg; Draize test, rabbit, eye: 100 mg/24H Moderate; Draize test, rabbit, eye: 70 uL Severe; Draize test, rabbit, eye: 75%; Draize test, rabbit, eye: 0.02 mL; Draize test, rabbit, skin: 500 mg; Draize test, rabbit, skin: 500 mg/24H Severe; Inhalation, mouse: LC50 = 350 ppm/4H; Inhalation, mouse: LC50 = 1800 mg/m3/4H; Inhalation, rat: LC50 = 500 ppm/4H; Inhalation, rat: LC50 = 1800 mg/m3/4H; Oral, mouse: LD50 = 320 mg/kg; Oral, mouse: LD50 = 320 mg/kg; Oral, rat: LD50 = 370 mg/kg; Oral, rat: LD50 = 370 mg/kg; Skin, rabbit: LD50 = 460 uL/kg; Skin, rat: LD50 = 790 mg/kg.
CAS# 105-76-0: Oral, rat: LD50 = 3700 mg/kg; Skin, rabbit: LD50 = 10 gm/kg.
CAS# 110-16-7: Draize test, rabbit, eye: 100 mg Severe; Draize test, rabbit, eye: 1%/2M Severe; Draize test, rabbit, skin: 500 mg/24H Mild; Inhalation, rat: LC50 = >720 mg/m3/1H; Oral, mouse: LD50 = 2400 mg/kg; Oral, rat: LD50 = 708 mg/kg; Skin, rabbit: LD50 = 1560 mg/kg.
CAS# 1931-62-0.
Carcinogenicity:
tert-Butyl hydroperoxide - Not listed by ACGIH, IARC, or NTP.
Maleic acid, dibutyl ester - Not listed by ACGIH, IARC, or NTP.
Maleic acid - Not listed by ACGIH, IARC, or NTP.
tert-Butyl monoperoxymaleate - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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

IATA
Shipping Name: ORGANIC PEROXIDE TYPE E, SOLID (tert-Butyl monoper
oxymaleate) (forbidden to ship via cargo or passenger a
Hazard Class: 5.2
UN Number: 3108
Packing Group:
IMO
Shipping Name: ORGANIC PEROXIDE TYPE E, SOLID (tert-BUTYL MONOPER
OXYMALEATE)
Hazard Class: 5.2
UN Number: 3108
Packing Group:
RID/ADR
Shipping Name: ORGANIC PEROXIDE TYPE E, SOLID
Hazard Class: 5.2
UN Number: 3108
Packing group:
USA RQ: CAS# 110-16-7: 5000 lb final RQ; 2270 kg final RQ

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN O
Risk Phrases:
R 22 Harmful if swallowed.
R 36/38 Irritating to eyes and skin.
R 41 Risk of serious damage to eyes.
R 7 May cause fire.
Safety Phrases:
S 3/7 Keep container tightly closed in a cool,
well-ventilated place.
S 14 Keep away from ... (incompatible materials to
be indicated by the manufacturer).
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.
S 50 Do not mix with ... (to be specified by the
manufacturer).
WGK (Water Danger/Protection)
CAS# 75-91-2: No information available.
CAS# 105-76-0: 1
CAS# 110-16-7: 1
CAS# 1931-62-0: No information available.
Canada
CAS# 75-91-2 is listed on Canadas DSL List.
CAS# 105-76-0 is listed on Canadas DSL List.
CAS# 110-16-7 is listed on Canadas DSL List.
CAS# 1931-62-0 is listed on Canadas NDSL List.
CAS# 75-91-2 is listed on Canadas Ingredient Disclosure List.
CAS# 105-76-0 is not listed on Canadas Ingredient Disclosure List.
CAS# 110-16-7 is listed on Canadas Ingredient Disclosure List.
CAS# 1931-62-0 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 75-91-2 is listed on the TSCA inventory.
CAS# 105-76-0 is listed on the TSCA inventory.
CAS# 110-16-7 is listed on the TSCA inventory.
CAS# 1931-62-0 is listed on the TSCA inventory.