FIRST AID
• Move victim to fresh air.
• Call 911 or emergency medical service.
• Apply artificial respiration if victim is not breathing.
• Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
• Administer oxygen if breathing is difficult.
• Remove and isolate contaminated clothing and shoes.
• In case of contact with liquefied gas, thaw frosted parts with lukewarm water.
• In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes.
• Keep victim warm and quiet.
• Keep victim under observation.
• Effects of contact or inhalation may be delayed.
• Ensure that medical personnel are aware of the material(s) involved, and take precautions to protect themselves.

(Source: Canada, The Transport Dangerous Goods Directorate)