What are Class I Class II or Class III liquids?
Class I liquids are the most hazardous from a fire safety standpoint, while Class IIIB liquids are the least hazardous. Class IA liquids are liquids that have flash points below 73 °F (22.8 °C) and boiling points below 100 °F (37.8 °C). Additionally, unstable flammable liquids are treated as Class IA liquids.
Category 1 shall include liquids having flashpoints below 73.4 °F (23 °C) and having a boiling point at or below 95 °F (35 °C). 2. Category 2 shall include liquids having flashpoints below 73.4 °F (23 °C) and having a boiling point above 95 °F (35 °C).
Examples of Class 3 Flammable Liquids include acetaldehyde, petroleum ether, and ethyl chloride. Class 3 “Combustible” liquids are those with a flashpoint above 100 degrees and below 200 degrees Fahrenheit. Acetone, benzene, and methyl alcohol are all examples of Class 3 Combustible Liquids.
Combustible liquids are divided into two classes: Class C1: A combustible liquid that has a closed cup flashpoint of greater than 60 °C but less than 93 °C. Class C2: A combustible liquid that: Has a flashpoint of greater than 93 °C.
Class Definition
Class I locations are those in which flammable vapors and gases may be present. Class II locations are those in which combustible dust may be found. Class III locations are those which are hazardous because of the presence of easily ignitable fibers or flyings.
The Class I and Class II input designations refer to the internal construction and electrical insulation of a power supply. These standards were developed to protect the user from electric shock.
Class II: Liquids with a flash point at or above 100°F and below 140°F (60°C). Examples: No. 1, 2 and 3 fuel oils, kerosene, and hexyl alcohol.
Class 2: flammable gases. Class 3: flammable liquids.
What is a Class 3 hazardous material? Per the DOT, every hazardous material is assigned to one of nine classes. Flammable and combustible liquids are #3, gasoline among them.
| Type | Common Examples |
|---|---|
| Flammable Liquids (Flashpoint not more than 141¡F) | Gasoline and items containing gasoline or gasoline fumes |
| Paint, paint-related materials | |
| Cigarette lighters (flammable liquid) | |
| Combustible Liquids (Flashpoint above 141¡F & below 200¡F) | Diesel fuel, kerosene |
What are examples of Class I liquids?
Typical Class I liquids include butyl alcohol, diethyl glycol, styrene, and turpentine. Class II liquids are combustible liquids that have a temperature flashpoint at or above 100 °F (37.8 °C) and below 140 °F (60 °C).
While we don't always think about alcohol being classed as a dangerous good, ethanol is regarded as a Class 3 Flammable Liquid.
• Class C2 - a combustible liquid that has a flashpoint exceeding 93°C or has been. excluded from being a flammable liquid by any of the criteria for sustaining combustion.
Class C2 – combustible liquids that have a flashpoint greater than 93°C or has been excluded from being classed as a flammable liquid by any of the criteria for sustaining combustion.
Flammable: A liquid with a flash point under 100°F is considered flammable. Examples: gasoline, acetone, toluene, diethyl ether, alcohols.
Hazmat Class 1 are explosive materials which are any substance or article, including a device, which is designed to function by explosion or which, by chemical reaction within itself is able to function in a similar manner even if not designed to function by explosion.
Category 1 is always the greatest level of hazard within its class. – If Category 1 is further divided, Category 1A within the same hazard class is a greater hazard than category 1B. Category 2 within the same hazard class is more hazardous than Category 3, and so on. There are a few exceptions to this rule.
Commonly transported class 3 dangerous goods include acetone, adhesives, paints, gasoline, perfume, ethanol, methanol and some pesticides with flammable solvents.
- Class I devices are low-risk devices. Examples include bandages, handheld surgical instruments, and nonelectric wheelchairs.
- Class II devices are intermediate-risk devices. ...
- Class III devices are high-risk devices that are very important to health or sustaining life.
Class 1 insurance covers an individual occupying an owned vehicle, an individual occupying a vehicle owned by a resident relative, a pedestrian, or a bicyclist. Class 1 insurance, also written as Class I insurance, provides benefits to qualifying parties for any insurance policy in which premiums are paid.
What are Class I II and III medical devices FDA?
Class I includes devices with the lowest risk and Class III includes those with the greatest risk. As indicated above all classes of devices as subject to General Controls. General Controls are the baseline requirements of the Food, Drug and Cosmetic (FD&C) Act that apply to all medical devices, Class I, II, and III.
Flammable liquids are among the most frequently shipped dangerous goods, which is understandable when you consider that fuels (petrol and diesel) are class 3 flammable liquids.
Class 2 - Flammable Gas LPG Bottles/Cylinder Storage. Class 3 - Flammable Liquid Storage.
Category II flammable liquids are those with boiling points > 95 °F and flash points < 73 °F. Category III flammable liquids are those with flash points > 73 °F and ≤ 140 °F (60 °C) Category IV flammable liquids are those with flash points > 140 °F and ≤ 199.4 °F.
Class 2 hazards are compressed gases, which are divided into four categories: flammable/combustible gases, non-flammable/non-poisonous gases, toxic/poisonous gases, and oxygen.
Risk level 3: Materials extremely hazardous to health, but areas may be entered with extreme care. Full protective clothing including self-contained breathing apparatus, coat, pants, gloves, and boots, with bands around the legs, arms, and waist should be provided. No skin surface should be exposed.
Hazard Class 2: Compressed Gases.
Safety Hazards
DOT designates typical fuel ethanol per as a Class 3 Flammable Liquid. The Occupational Safety and Health Administration (OSHA) considers typical fuel ethanol a Class IB flammable product. Class IB includes liquids having flashpoints below 73 deg.
Not more than 60 gallons of Category 1, 2 and/or 3 flammable liquids or 120 gallons of Category 4 flammable liquids shall be stored in any one storage cabinet. Not more than three such cabinets may be located in a single storage area. Quantities in excess of this shall be stored in an inside storage room.
The UN upper limit for Class 3 is normally FP 60ºC, above which the material is not regarded as dangerous for transport. However, diesel came within the full scope of the Regulations recently. Beyond that, a flammable liquid is included in Class 3 if it has a FP above 60ºC and is carried at a temperature above its FP.
Is hand sanitizer a Class 3 Flammable Liquid?
Why is Hand Sanitizer a Hazardous Material? Because alcohol is a key ingredient in hand sanitizer, most of the ones we use meet the definition of a Class 3 Flammable Liquid. Flammable liquids are those with a flash point less than or equal to 140oF [49 CFR 173.120].
Class 4.3 dangerous goods and flammable liquids are also incompatible. These two classes of dangerous goods shouldn't be kept together. Class 4.3 dangerous goods and flammable liquids have the potential to react dangerously and harm people and property.
Class 3, Flammable Liquids
The symbol is a flame.
Hazardous Location Types
Class I Locations A “Class I Location” is created by the presence of flammable gases or vapors in the air in sufficient quantities to be explosive or ignitable.
In Class I, there are Group A (Acetylene and similar gases), Group B (Hydrogen and similar gases), Group C (Ethylene and similar gases) and Group D (Propane and similar gases).
CLASS 2 - Gases. 2.1 Flammable Gases. Commonly used as fuel (example: propane).
Alcohol is a toxic, psychoactive, and dependence-producing substance and has been classified as a Group 1 carcinogen by the International Agency for Research on Cancer decades ago – this is the highest risk group, which also includes asbestos, radiation and tobacco.
CHEBI:26878 - tertiary alcohol
A tertiary alcohol is a compound in which a hydroxy group, ‒OH, is attached to a saturated carbon atom which has three other carbon atoms attached to it.
There are three types of alcohol. Alcohols are classified as primary, secondary or tertiary alcohols. The classification is done in accordance with the carbon atom of an alkyl group is attached to the hydroxyl group.
Category 4 Flammable Liquids
A Category 4 flammable liquid is any liquid with a closed-cup flash point at or above 140°F (60°C) AND below 200°F (93°C).
What is combustible liquid Class III A?
Class IIIA combustible liquids have a flash point greater than or equal to 140° F (60° C) but less than 200° F (93° C). Class IIIB combustible liquids have a flash point greater than or equal to 200° F (93° C).
An example of flammable liquid category 4 is diesel. So, the use, storage and handling of diesel is subject to the requirements of the Work Health and Safety Regulation 2011 as a hazardous chemical (Part 7.1).
Class C1Combustible Liquids are those which have a closed cup flashpoint of between 60 °C and 93 °C. C1 Combustible Liquids are not classified as dangerous goods for transport purposes. However, industry practice is often to display “Combustible Liquid” in the area normally used for placarding.
(3) Grade C. Any flammable liquid having a Reid vapor pressure of 81⁄2 pounds or less and a flashpoint of 80 °F or below, as measured in accordance with ASTM D 323.
Class C: Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury from electrical shock. Don't use water. Class D: Certain flammable metallic substances such as sodium and potassium.
Hazard Class 3 – Flammable Liquids
Flammable liquids have a “flash point” of 140°F or less. A flash point is the temperature when an ignition source near the liquid can ignite the vapors. Examples of flammable liquids include the following: Gasoline.
A flammable liquid is defined by NFPA as a liquid whose flash point does not exceed 100°F (37.8°C), when tested by closed‐cup test methods, while a combustible liquid is one whose flash point is 100°F (37.8°C) or higher, also when tested by closed‐cup methods.
The examples of combustible substances are: fossil fuels, petroleum, cooking gas, kerosene oil, coal, charcoal, wood, leaves, paper, wax, hydrogen gas, ethanol, methane, propane, and propene.
Hazard Class 2 – Gases
Non-flammable gases (2.2) may include liquified gases or cryogenic liquids (e.g., helium and asthma inhalers). Poisonous gases (2.3) are toxic or presumed toxic to humans (e.g., carbon monoxide).
| Type | Common Examples | International |
|---|---|---|
| Flammable Liquids (Flashpoint not more than 141¡F) | Acetone, rubbing alcohol, witch hazel | N |
| Gasoline and items containing gasoline or gasoline fumes | N | |
| Paint, paint-related materials | N | |
| Cigarette lighters (flammable liquid) | N |
What is an example of a Class 3 flammable liquid?
Common Examples of Class 3 Flammable Liquids
Gasoline and items that contain gasoline or gasoline fumes are some of the most common examples. Other common types of class 3 flammable liquids include rubbing alcohol, witch hazel, paint and paint-related materials, acetone and cigarette lighters containing butane.
Class II liquids are combustible liquids that have a temperature flashpoint at or above 100 °F (37.8 °C) and below 140 °F (60 °C). Typical Class II liquids include liquids such as camphor oil, diesel fuel, pine tar, methanol, and other solvents.
Subsets of Class 2 are:
2.1 Flammable Gas – Hydrogen Compressed, Ethylene, Butylene, Acetylene, etc. 2.2 Non-Flammable Gas – Oxygen Compressed, Nitrogen Compressed, etc. 2.3 Poisonous Gas – Phosgene, Sulfur Tetrafluoride, Insecticide Gasses, etc.
For example, class 1 is explosives, which has six divisions (1.1 – 1.6). The divisions for hazard class 1 help individuals identify the type of explosive in question, such as those that have a mass explosion hazard, non-mass explosives with a projection hazard, and explosives that pose a fire hazard.
Risk level 3: Materials extremely hazardous to health, but areas may be entered with extreme care. Full protective clothing including self-contained breathing apparatus, coat, pants, gloves, and boots, with bands around the legs, arms, and waist should be provided. No skin surface should be exposed.
This class includes compressed gases, liquefied gases, dissolved gases and refrigerated liquefied gases. Compressed gases, liquefied gases and dissolved gases are hazardous because of the high pressure inside the cylinder or container.
A liquid with a flash point between 23 and 60 Celsius degrees will be classified as flammable liquid category 3. A liquid with a flash point above 93 Celsius degrees does not meet GHS classification criteria and will not be regarded as a hazardous chemical.
Class 3 dangerous goods are flammable liquids with flash points no more than 60 celcius degrees. It covers liquid substances, molten solid substances with a flash point above 60 celcius degrees and liquid desensitized explosives.
Flammable: A liquid with a flash point under 100°F is considered flammable. Examples: gasoline, acetone, toluene, diethyl ether, alcohols.
