Crude steam-cracked C4 product

  • Raffinate C4
Formula
Unspecified
Description
Colorless gas or liquid. This is cracked C4 after butadiene has been extracted.

Registry Numbers and Inventories.
UN (DOT)
1965
Beilstein/Gmelin
NA

Properties.
Melting point, °C
-106
Boiling point, °C
-8 to 4
Odor Threshold Odor threshold Varies
Density
0.6 g/cm3
Thermal expansion
0.002/K

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. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Make no contact with the spilled material. ELIMINATE all ignition sources, combustibles and ground all equipment. Take up with sand or other noncombustible absorbent material and place into containers for later disposal.
Stability
No data.

Fire.
Flash Point,°C
-18
Autoignition, °C
200
Upper exp. limit, %
10
Lower exp. limit, %
1.5
Fire fighting
Extinguish fire with flooding quantities of water or use dry chemical or carbon dioxide.
Fire potential
EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air.
Hazards
Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Containers may explode when heated.

Health.
Exposure limit(s)
Varies
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Acute effect - High vapor concentrations are irritating to the respiratory tract. Headaches, dizziness and drowsiness. Slight narcotic effect
   Skin
Liquid - Frostbite. Vapor - No hazard in normal industrial usebut may there may be some tissue damage due to low temperature.
   Eyes
Liquid - Irritating but does not injure eyes. Frostbite is possible. Vapor - May be some tissue damage due to low temperature. High vapor concentrations may be irritating to the eyes.

First aid
 
   Ingestion
Treat ingestions of greater than 40 milligrams per kilogram with decontamination of the stomach if within 4 hours of ingestion. Administer charcoal as a slurry.
   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. Clothing frozen to the skin should be thawed before being removed. In case of contact with liquefied gas, thaw frosted parts with lukewarm water
   Eyes
Flush with running water for at least 20 minutes.

Transport.
UN number
1965
Response guide
Hazard class
2.1