Facts About Fuel and Other Flammable Liquids

Flammable liquids are used every day. They power our cars in the form of gasoline, cover the walls in our office and heat some of our homes in the form of kerosene. They are commonly found around the home or garage. Because they are so common, we may forget that these liquids are potentially dangerous and should be treated as so.

A flammable liquid is one which can ignite if exposed to a temperature below 100° Fahrenheit. The temperature at which a flammable liquid will ignite is called its “flashpoint.” In reality, the liquid does not ignite, but rather, gives off vapors that burn when exposed to the air and an ignition source.

Flammable liquids are divided into two classes: flammable or combustible.

1. A flammable liquid is considered extremely hazardous, as it can ignite at a relatively low temperature. Common examples of flammable liquids include gasoline, turpentine, ethanol, ether and lacquer thinner.
2. A combustible liquid has vapors which burn when exposed to a temperature above 100° Fahrenheit. Liquids in the combustible category include fuel oil, kerosene, mineral oil, diesel fuel, motor oil and paints.

Both flammable and combustible liquids are considered hazardous and must be stored, used and disposed of properly. Because they can easily burn, they should be kept away from ignition sources such as:

• Electrical switches
• Cigarette lighters
• Pilot lights
• Embers or sparks
• Hot electrical wires
• Static electricity

They should always be stored in their original containers, allowing the user to have access to safety precautions and directions. Flammable and combustible liquids should only be used in a manner intended by the manufacturer. Other uses may lead to accidents, combustion or harm to human health.

Proper disposal of flammable liquids is critical. If improperly disposed of, a flammable liquid can cause harm to the environment, as well as to human health. According to the U.S. EPA, the motor oil from just one oil change is enough to contaminate one million gallons of fresh water. That is a year’s supply of water for 50 people! If thrown away improperly, these liquids can contaminate groundwater, soil and air quality, as well as pose fire hazard risks to their surroundings.