Chemical Properties
1-Butyne is a clear, colorless gas with a characteristic acetylenic odor. It is an extremely
flammable and reactive alkyune and may cause frostbite. It is insoluble in water. It is a
specialty gas mixture used in organic synthesis of compounds and instrument calibration;
it has no specifi c or signifi cant industrial application. On combustion, 1-butyne releases
carbon monoxide.
General Description
A colorless gas. Denser than air. Prolonged exposure to intense heat may cause the containers to rupture violently and rocket.
Reactivity Profile
ETHYL ACETYLENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic polymerization.
Air & Water Reactions
Highly flammable.
Hazard
Flammable, dangerous fire risk.
Health Hazard
1-Butyne probably has some anesthetic activity and can act as a simple asphyxiant. The
symptoms of poisoning include rapid respiration, muscular incoordination, fatigue, dizzi ness, nausea, vomiting, unconsciousness, and death. The toxicity of 1-butyne has not been
thoroughly investigated and the published information is very scanty
Health Hazard
Vapors may cause dizziness or asphyxiation without warning. Some may be toxic if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases.
Potential Exposure
A simple asphyxiant. Ethyl acetylene
is used as a fuel and as a chemical intermediate.
Fire Hazard
EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Silane will ignite spontaneously in air. May polymerize explosively when heated or involved in a fire. Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.
First aid
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. If
frostbite has occurred, seek medical attention immediately;
do NOT rub the affected areas or flush them with water. In
order to prevent further tissue damage, do NOT attempt to
remove frozen clothing from frostbitten areas. If frostbite
has NOT occurred, immediately and thoroughly wash contaminated skin with soap and water.
Shipping
UN2452 Ethylacetylene, stabilized, Hazard
Class: 2.1; Labels: 2.1-Flammable gas. Cylinders must be
transported in a secure upright position, in a well-ventilated
truck. Protect cylinder and labels from physical damage.
The owner of the compressed gas cylinder is the only entity
allowed by federal law (49CFR) to transport and refill
them. It is a violation of transportation regulations to refill
compressed gas cylinders without the express written
permission of the owner
Incompatibilities
Extremely flammable; forms explosive
mixture with air. Incompatible with oxidizers (chlorates,
nitrates, peroxides, permanganates, perchlorates, chlorine,
bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases,
strong acids, oxoacids, epoxides, copper and its alloys, and
various plastics including Teflon. May undergo violent
polymerization when subjected to heat, direct sunlight, or
contamination
Description
Ethyl acetylene is a colorless, compressed gasor liquid. Molecular weight = 54.0; Boiling point = 8.1℃;Freezing/Melting point = -130℃; Flash point = -7℃.Hazard Identification (based on NFPA-704 M RatingSystem): Health 1, Flammability 4, Reactivity 2. Insolublein water.
Waste Disposal
Return refillable compressed
gas cylinders to supplier
Definition
ChEBI: A terminal acetylenic compound that is butane carrying a triple bond at position 1.
