2,2,3,3-Tetramethylbutane

  • Hexamethylethane
  • Tetramethylbutane
Formula
C8H18
Structure
Description
Colorless.

Registry Numbers and Inventories.
CAS
594-82-1
EC (EINECS/ELINCS)
209-855-6
EC Index Number
601-009-00-8
EC Class
Highly flammable; Harmful; Irritant; Vapours may cause drowsiness and dizziness; Dangerous for the Environment
UN (DOT)
3295
Beilstein/Gmelin
1696864
Beilstein Reference
4-01-00-00447
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H18
Formula mass
114.23
Melting point, °C
-100.7
Boiling point, °C
106
Vapor pressure, mmHg
33 (25 C)
Critical temperature
271
Critical pressure
24.5
Density
0.8242 g/cm3 (20C)
Solubility in water
Insoluble
Viscosity
0.634 (20 C)
Refractive index
1.4695 (20 C)
Partition coefficient, pKow
4.28
Heat of fusion
7.6 kJ/mol
Heat of vaporization
31.5 kJ/mol
Heat of combustion
-5450 kJ/mol

Hazards and Protection.
Storage
Keep away from water. Flammables-area.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stability
Stable under normal temperatures and pressures.
Decomposition
Irritating and toxic fumes and gases.

Fire.
Flash Point,°C
0
Upper exp. limit, %
5.8
Lower exp. limit, %
0.9
Fire fighting
Use of water spray when fighting fire may be inefficient. Small Fires: Dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Large Fires: Water spray, fog or alcohol-resistant foam. Use water spray or fog; do not use straight streams.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Vapors may cause dizziness or suffocation. May cause irritation or burns.
   Skin
May cause irritation or burns.
   Eyes
See Skin.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
   Eyes
Flush with running water for at least 20 minutes.

Transport.
UN number
3295
Response guide
Hazard class
3
Packing Group
I; II; III
 
USCG CHRIS Code
HFN