2,2-Di-(tert-butylperoxy)butane

  • Di-tert-butyl sec-butylidene diperoxide
  • Peroxide, (1-methylpropylidene)bis[(1,1-dimethylethyl)
  • Perhexa 22
  • Trigonox D
  • Lupersol 220
  • Chaloxyd P 1200AL
Formula
C12H26O4
Structure
Description
A 50% by weigh solution in mineral oil. Pale yellow liquid with the odor of rubbing alcohol.

Registry Numbers and Inventories.
CAS
2167-23-9
EC (EINECS/ELINCS)
218-507-2
RTECS
SD8424000
UN (DOT)
2111
Beilstein/Gmelin
1703713
Beilstein Reference
3-01-00-02783
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C12H26O4
Formula mass
234.34
Melting point, °C
-14
Boiling point, °C
228
Vapor pressure, mmHg
0.11 (24 C)
Density
0.8886 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.4122 (20 C)
Partition coefficient, pKow
5.08
Heat of vaporization
44.6 kJ/mol
Heat of combustion
-7826 kJ/mol

Hazards and Protection.
Storage
Store below 38 C. Store away from combustible materials and ignition sources.. Keep container closes.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Keep substance wet using water spray. Stop leak if you can do it without risk. SMALL SPILLS: Take up with inert, damp, noncombustible material using clean non-sparking tools and place into loosely covered plastic containers for later disposal.
Stability
Unstable.
Incompatibilities
Organic compounds can ignite on contact with concentrated peroxides, strongly reduced material such as sulfides, nitrides, and hydrides
Decomposition
Toxic fumes that are flammable

Fire.
Flash Point,°C
53
Fire fighting
SMALL FIRES: Water spray or fog is preferred; if water not available use dry chemical, carbon dioxide or regular foam. LARGE FIRES: Flood fire area with water from a distance. Use water spray or fog; do not use straight streams. Move containers from fire area if you can do it without risk. Do not move cargo or vehicle if cargo has been exposed to heat. Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
Fire potential
May be ignited by heat, sparks or flames. May burn rapidly with flare-burning effect.
Hazards
May explode from heat, shock, friction or contamination. May ignite combustibles (wood, paper, oil, clothing, etc.). May be ignited by heat, sparks or flames. May burn rapidly with flare-burning effect. Containers may explode when heated. Runoff may create fire or explosion hazard.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
 
Special
O

Health.
Exposure effects
   Ingestion
See Skin.
   Inhalation
Causes irritation.
   Skin
May cause severe injury or burns.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2111
Response guide
Hazard class
5.2