Butyl methyl ether

  • Methyl n-butyl ether
  • 1-Methoxybutane
Formula
C5H12O
Structure
Description
A clear liquid.

Registry Numbers and Inventories.
CAS
628-28-4
EC (EINECS/ELINCS)
211-033-7
S 16 23 33
RTECS
KN5240000
RTECS class
Other
UN (DOT)
2350
Beilstein/Gmelin
1696931
Beilstein Reference
4-01-00-01518
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C5H12O
Formula mass
88.17
Melting point, °C
-115
Boiling point, °C
70
Vapor pressure, mmHg
139 (20 C)
Critical temperature
240
Critical pressure
33.6
Density
0.7443 g/cm3 (20 C)
Solubility in water
Slightly soluble
Surface tension
20.32 g/s2 (2017 C)
Refractive index
1.3736 (20 C)
Partition coefficient, pKow
1.33
Heat of vaporization
32.42 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 chemical protective clothing. If contact with the material anticipated, wear appropriate chemical protective clothing.
Respirators
Wear positive pressure self-contained breathing apparatus.
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. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stability
No data.
Incompatibilities
May react violently with strong oxidizing agents.

Fire.
Flash Point,°C
-10
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Use alcohol foam, dry chemical or carbon dioxide. Keep run-off water out of sewers and water sources.
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
Fire may produce irritating, corrosive and/or toxic gases.

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

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. Wash skin with soap and water. Flush with running water for at least 20 minutes
   Eyes
Flush with running water for at least 20 minutes.

Transport.
UN number
2350
Response guide
Hazard class
3
Packing Group
II
 
Std. Transport #
4909324