The 2 refers to DOT (Department of Transportation) hazard class 2. This reference describes the different DOT hazard classes. As summarized in the comments: Class 2 (compressed gas) is divided into three subclasses (2.1 – flammable, 2.2 – non-flammable, non-toxic and 2.3 – toxic).
What is compressed gas 2?
Definition. Any material or mixture having in the container an absolute pressure exceeding 40 psi (pounds per square inch) at 70°F, or regardless of the pressure at 70°F, having an absolute pressure exceeding 140 psi at 130°F; or any flammable material having a vapor pressure exceeding 40 psi at 100°F.”
What does the compressed gas symbol mean?
Gases under pressure – Compressed gas. Warning. Contains gas under pressure; may explode if heated.
What are 2 hazards of flammable gas?
The gas can easily form a flammable mixture with air. A flammable gas is a compressed gas that can easily catch fire and continue to burn. The gas can easily form a flammable mixture with air.
What are the hazards of compressed gases?
Hazards associated with compressed gases include oxygen displacement, fires, explosions, and toxic gas exposures, as well as the physical hazards associated with high pressure systems. Special storage, use, and handling precautions are necessary in order to control these hazards.
What are the 2 gases?
List
| Name | Formula | Melting pt (°C) |
|---|---|---|
| Nitrogen | N2 | −210.0 |
| Carbon monoxide | CO | −205.02 |
| Fluorine | F2 | −219.67 |
| Argon | Ar | −189.34 |
What does hazard class 2 indicate?
The HAZMAT Class 2 in United States law includes all gases which are compressed and stored for transportation. Class 2 has three divisions: Flammable (also called combustible), Non-Flammable/Non-Poisonous, and Poisonous.
What do the hazard symbols mean?
Hazard pictograms alert us to the presence of a hazardous chemical. The pictograms help us to know that the chemicals we are using might cause harm to people or the environment.
Which pictogram is for compressed gases?
gas cylinder pictogram
The gas cylinder pictogram is used for the following classes and categories: Gases under pressure (Compressed gas, Liquefied gas, Refrigerated liquefied gas, and Dissolved gas)
What does this fire symbol represent 1?
DoD Class 1 Mass Explosion Hazard Placards: Military Fire Division Symbol 1, Octagon-Shaped (DOT-2215) Orders over $39.95 ship for free. Indicate the severity of mass explosion hazard by applying this symbol (1) at locations where ammunition and explosives are stored.
Which 2 of the hazards below apply to gasoline?
► Inhaling Gasoline can irritate the nose, throat and lungs. ► High exposure can cause headache, dizziness, lightheadedness, and passing out. cracking of the skin with redness.
What are the two main hazards posed by compressed gasses pick 2?
Compressed Gases
- Dangers from Compressed Gases. Compressed gas cylinders are common in the laboratory environment. …
- Asphyxiation. Compressed gases can displace oxygen causing injury or death. …
- Fire and Explosion. …
- Chemical Reaction. …
- Poisoning. …
- High Pressure. …
- Improper Handling. …
- Penetrating Skin.
Is compressed co2 flammable?
Treatment of overexposure should be directed at the control of symptoms and the clinical condition of the patient. FLAMMABLE PROPERTIES: Carbon dioxide cannot catch fire. SUITABLE EXTINGUISHING MEDIA: Nonflammable—use media appropriate for surrounding fire.
What does the air contain Class 2?
Ans: Air contains Gases, water vapour, dust, snacks and germs. 2.
Is no2 laughing gas?
Nitrous oxide is a colorless and odorless substance that’s also known as “laughing gas.” When inhaled, the gas slows down the body’s reaction time. This results in a calm, euphoric feeling. Nitrous oxide can be used to treat pain. It also functions as a mild sedative.
Is N2 flammable?
No, nitrogen gas is known to be non-flammable. Nitrogen gas is a non-toxic gas that is colourless and odourless. The primary health hazard posed by this gas is asphyxiation due to the displacement of oxygen.
What is a Class 2 material?
Class 2 dangerous goods are gases.
It covers compressed gases, liquefied gases, dissolved gases, refrigerated liquefied gases, mixtures of gases and aerosol dispensers/articles containing gas.
What is the meaning of flammable gas 2?
Class 2, Division 2.1 Flammable Gas is defined as Gases which, at 20 °C and a standard temperature of 101.3 kPa, are ignitable when in a mixture of 13% or less by volume in air. Examples: Acetylene, Natural gas, and Liquified Petroleum Gas (LPG).
Is CO2 a compressed gas?
Like regular air, carbon dioxide (CO2) is compressible.
What are the 4 kinds of compressed gases?
Hazard classification
Compressed gases are classified as class I, II, III, or IV in order of decreasing hazard. * Classes are based on the lethal concentration to 50% of test animals (rats) of each gas (LC50). * Note: The California Fire Code uses a different classification system.