- Olefiant gas
Colorless with a sweet odor and taste.
Oxyethylene welding & cutting metals, manufacture mustard gas, plant growth regulator and many other organics, medication: inhalation anesthetic.
Registry Numbers and Inventories.
EC Index Number
S 9 16 33
Agricultural Chemical and Pesticide; Tumorigen
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
43300 (25 C)
Vapor density (air=1)
Odor Threshold Odor threshold 260 ppm
0.386 g/cm3 (20 C) (liquid)
Solubility in water
0.001 cp 20C
13.66 g/s2 (-88 C)
1.363 (-100 C)
Partition coefficient, pKow
0.0026/K at -100 C
Heat of vaporization
Heat of combustion
Hazards and Protection.
Protect against physical damage. Isolate from oxygen chlorine, combustible, organic and oxidizing materials. Store at in cool, well-ventilated area of non-combustible construction, away from possible sources of ignition.
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.
Splash-proof suit, gloves, boots and goggles. Decontamination showers and eye fountains to be available on deck in suitabaly marked and convenient locations.
Wear positive pressure self-contained breathing apparatus (SCBA).
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Reactive at high temperature or pressure. Forms flammable mix with air over a wide range. Spontaneously explosive in sunlight with chlorine. Can react vigorously with oxidizing materials.
The substance may polymerize to form aromatic compounds under the influence of temperatures above 600 C.
Upper exp. limit, %
Lower exp. limit, %
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
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. Ruptured cylinders may rocket.
Vapors are anesthetic.
TLV: 1000ppm (a simple ashyxiant) (ACGIH 1995-1996).
Rapid breathing and rapid heart rate are common. In severe cases abnormally low blood pressure, apnea, and cardiac arrest develop. Various disturbances including headache, dizziness, mood disturbances, numbness of the extremities, sleepiness, mental confusion, poor judgement and coordination, and memory loss may occur. Prolonged or severe hypoxia results in unconsciousness. Prolonged asphyxia may produce CNS injury. Hemiparesis has been reported with volatile substance abuse. Cerebral edema with brainstem herniation may occur. Seizures have been reported following intentional inhalation.
Nausea, vomiting, and gastrointestinal hemorrhage may develop.
Hyperventilation may develop.
Dermal exposure may cause frostbite injury. Severe tissue burns have been reported.
Decreases in night vision, visual acuity, and visual fields (tunnel vision) may occur. Frothy mucous may be seen.
Seek medical assistance.
Administer 100% humidified supplemental oxygen with assisted ventilation as required. If hypoxia has been severe or prolonged, carefully evaluate for neurologic sequelae and provide supportive treatment as indicated.
Rewarming and a variety of topical treatments are indicated for frostbite injury. See main section for more information.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.