Methallyl alcohol

  • 2-Methyl-2-propen-1-ol
  • Isopropenyl carbinol
  • 2-Methylprop-2-en-1-ol
  • Methyl allyl alcohol
Formula
C4H8O
Structure
Description
Colorless liquid with a pungent odor.
Uses
Used in the chemical process industry.

Registry Numbers and Inventories.
CAS
513-42-8
EC (EINECS/ELINCS)
208-161-0
RTECS
UD5250000
RTECS class
Primary Irritant
UN (DOT)
2614
Beilstein/Gmelin
969226
Beilstein Reference
4-01-00-02114
Swiss Giftliste 1
G-8664
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H8O
Formula mass
72.12
Melting point, °C
-50
Boiling point, °C
114
Vapor pressure, mmHg
7
Critical temperature
274
Critical pressure
46.7
Density
0.8677 g/cm3 (0 C)
Solubility in water
Slightly soluble
Viscosity
2.24 20 C
Refractive index
1.4229 (20 C)
Partition coefficient, pKow
0.6

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. 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. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Use water spray to knock-down vapors.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
May react vigorously with strong oxidizing agents May react exothermically with reducing agents to release hydrogen gas.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
33
Autoignition, °C
320
Fire fighting
Fire Extinguishing Agents Not to Be Used: Water.Fire Extinguishing Agents: Dry chemical, alcohol foam, or carbon dioxide.
Fire potential
HIGHLY FLAMMABLE.
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. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products
Irritating vapors and toxic gases, such as carbon dioxide and carbon monoxide, may be formed when involved in fire.
Health
2
 
Flammability
3
 
 
Reactivity
0
 

Health.
Poison_Class
2
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
Causes respiratory tract irritation. Vapors may cause dizziness or suffocation.
   Inhalation
Vapors may cause dizziness or suffocation. May cause irritation or burns.
   Skin
May cause irritation or burns.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Remove to fresh air. If breathing has stopped, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Remove contaminated clothing and shoes. Flush with water.
   Eyes
Flush with water for at least 15 min., lifting lids occasionally.

Transport.
UN number
2614
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
MLL
 
Std. Transport #
4910353