2,5-Dimethyl-2,5-dihydroperoxy hexane

  • 2,5-Dimethylhexane-2,5-dihydroperoxide
  • 1,1,4,4-Tetramethyltetramethylene dihydroperoxide
  • Luperox 2,5-2,5
Formula
C8H18O4
Structure
Description
White wet solid.

Registry Numbers and Inventories.
CAS
3025-88-5
EC (EINECS/ELINCS)
221-184-0
UN (DOT)
2174
Beilstein/Gmelin
1633793
Beilstein Reference
4-01-00-02224
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H18O4
Formula mass
178.23
Melting point, °C
105
Boiling point, °C
317
Vapor pressure, mmHg
3E-5 (25 C)
Density
1.156 g/cm3
Solubility in water
Insoluble
pKa/pKb
12.27 (pKa)
Partition coefficient, pKow
2.32
Heat of vaporization
64.7 kJ/mol
Heat of combustion
-1386 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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
No data.
Incompatibilities
Organic compounds can ignite on contact with concentrated peroxides, strongly reduced material such as sulfides, nitrides, and hydrides

Fire.
Flash Point,°C
146
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
Decomposes violently when heated in fire.
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
Remove from exposure; call a doctor.
   Skin
Wash with large amount of water.
   Eyes
Wash with large amount of water for at least 15 min.

Transport.
UN number
2174
Response guide
Hazard class
5.2
USCG CHRIS Code
DDW