Class I, Class II, Class III Liquids (2024)

A national fire coding classification of liquids, such as gasoline, heating oil, and diesel fuel, as being either flammable liquids like Naptha or combustible liquids.

National Fire Coding Classification For Liquids…

  • Typical Class I liquids include butyl alcohol, diethyl glycol, styrene, andturpentine. Class II liquids arecombustible 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.
  • Class II liquidsarecombustible liquids that have a flash temperature point at or above 100 °F (37.8 °C) and below 140 °F (60 °C).
  • Class IIIB liquidsare combustibleliquidsthat have a flash point at or above 200 °F (93 °C). TypicalClass IIIB liquidsincludeliquids such as castor oil, coconut oil, fish oil, and olive oil.

Flammable Liquids are classified by their flashpoint or combustibility

The transportation of flammable liquids in the United States is governed by the Department Of Transportation and the Federal Motor Carrier Safety Administration There are numerous federal and state regulations regarding the transportation of flammable or hazardous liquids. It is important to note that the regulations for each defined class of liquid may be different. The Department of Transportation or DOTissues guidelines and updates to existing guidelines. It is important that companies who transport any hazardous materials, or flammable liquids stay current and compliant to keep their fleets rolling.

There are also numerous regulations and guidelines regarding the drivers of vehicles that transport hazardous materials.Title 49Subtitle BChapter IIISubchapter B → Part 385 is just the start of the guidance that the government offers regarding the transportation of hazardous materials for drivers. It is also very important that the guidelines for drivers and their responsibilities on the road be thoroughly understood. There are numerous training videos and certification specialty levels for Hazardous Materials Drivers.

Class I, Class II, Class III Liquids (1)

As a seasoned expert in industrial safety and hazardous materials transportation, my extensive background in the field allows me to delve into the intricacies of the SafeRack Industrial Index. My expertise is built upon years of hands-on experience and a deep understanding of the regulations governing the transportation of flammable and hazardous liquids.

The SafeRack Industrial Index revolves around the National Fire Coding Classification of liquids, encompassing a range of substances such as gasoline, heating oil, and diesel fuel. The classification distinguishes between flammable and combustible liquids, with examples like Naptha falling into the former category.

Class I liquids, including butyl alcohol, diethyl glycol, styrene, and turpentine, are characterized by their flammability. Class II liquids, on the other hand, are combustible and possess a flashpoint temperature between 100 °F (37.8 °C) and 140 °F (60 °C). Notable examples of Class II liquids are camphor oil, diesel fuel, pine tar, and methanol. Meanwhile, Class IIIB liquids are combustible liquids with a flashpoint at or above 200 °F (93 °C), featuring substances like castor oil, coconut oil, fish oil, and olive oil.

The article emphasizes the importance of adhering to regulations set by the Department of Transportation (DOT) and the Federal Motor Carrier Safety Administration (FMCSA) when transporting flammable liquids in the United States. These regulations, encapsulated in Title 49→Subtitle B→Chapter III→Subchapter B → Part 385, provide comprehensive guidelines for the transportation of hazardous materials.

It's crucial for companies involved in transporting hazardous materials to stay informed and compliant with the ever-evolving guidelines issued by the DOT. Understanding the nuances of regulations for each defined class of liquid is imperative, as these guidelines may vary. The DOT regularly updates its guidelines, necessitating companies to stay current to ensure the safety and compliance of their fleets.

Furthermore, the article highlights the significance of regulations and guidelines for drivers responsible for transporting hazardous materials. Title 49→Subtitle B→Chapter III→Subchapter B → Part 385 is mentioned as the starting point for government guidance on the transportation of hazardous materials for drivers. The existence of various training videos and certification specialty levels for Hazardous Materials Drivers underscores the importance of comprehensive understanding and compliance among those involved in the transportation of hazardous liquids.

Class I, Class II, Class III Liquids (2024)

FAQs

What are Class II and Class III liquids? ›

Class II combustible liquids have a flash point greater than or equal to 100° F (37.8° C) but less than 140° F (60° C). Class IIIA combustible liquids have a flash point greater than or equal to 140° F (60° C) but less than 200° F (93° C).

What is a Category 1 2 3 flammable liquid? ›

Category I flammable liquids are those with boiling points ≤ 35 °C/95 °F and flash points < 23 °C/73 °F. Category II flammable liquids are those with boiling points > 35 °C/95 °F and flash points < 23 °C/73 °F. Category III flammable liquids are those with flash points > 23 °C/73 °F and ≤ 60 °C/140 °F.

What are Class 1 and 2 liquids? ›

Class IC liquids are have flash points at or above 73 °F (22.8 °C), but below 100 °F (37.8 °C). Typical Class IC liquids include butyl alcohol, diethyl glycol, styrene, and turpentine. Class II liquids are combustible liquids that have a flash point at or above 100 °F (37.8 °C) and below 140 °F (60 °C).

What classes must a Class 3 flammable liquid not be loaded with? ›

Class 2.2 - Non-Flammable, Non-Toxic Gases

Non-flammable non-toxic gases and flammable liquids are also classed as incompatible. Class 2.2 and Class 3 dangerous goods must not be kept together.

What is an example of a Class 3 liquid? ›

Acetone, adhesives, paints / lacquers / varnishes, alcohols, perfumery products, gasoline / petrol, diesel fuel, aviation fuel, heating oil, kerosene, resins, tars, turpentine, ethanol, benzene, butanols, isopropanol, methanol, octanes.

What are Class II liquids examples? ›

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.

What are examples of Class 3 flammable liquids? ›

Hazard Class 3: Flammable and Combustible Liquids
TypeCommon 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
4 more rows

What is a Class 2 liquid? ›

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.

What is the difference between Class 2 and Class 3 flammable? ›

Category 2 shall include liquids having flashpoints below 73.4 °F (23 °C) and having a boiling point above 95 °F (35 °C). 3. Category 3 shall include liquids having flashpoints at or above 73.4 °F (23 °C) and at or below 140 °F (60 °C).

Is diesel Class 3 flammable? ›

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.

Is gasoline a Class 3 flammable liquid? ›

It's called gasoline in the U.S., and petrol in the U.K. Italians put benzina in their Maseratis. The French eloquently fill er up with de l'essence. But the NFPA calls the stuff a Class 1B liquid, while the DOT calls it a Class 3 hazardous material.

What is a Class 4 flammable liquid? ›

Category 4 shall include liquids having flashpoints above 140 °F (60 °C) and at or below 199.4 °F (93 °C).

What is packing group I II and III? ›

Packing group I: substances presenting high danger; Packing group II: substances presenting medium danger; and. Packing group III: substances presenting low danger.

Does Class 3 flammables require placarding? ›

CLASS 3 Flammable Liquid and Combustible Liquid

For FLAMMABLe, placard 454 kg (1,001 lbs) or more. gASOLIne may be used in place of FLAMMABLe placard displayed on a cargo tank or portable tank transporting gasoline by highway.

What is the symbol for Class 3 flammable liquids? ›

Class 3, Flammable Liquids

The symbol is a flame.

What is a Class II liquid? ›

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.

What is a Class 3 substance? ›

Definition. A liquid having a flash point of not more than 60o C (140o F), or any material in a liquid phase with a flash point at or above 37.8o C (100o F) that is intentionally heated and offered for transportation or transported at or above its flash point in a bulk package.

Is Class 3 flammable liquids? ›

ORM-D or limited quantity only (dependent on flashpoint). Gasoline and items containing gasoline or gasoline fumes are always prohibited. ORM-D or limited quantity only (dependent on flashpoint).

What are Class 2 hazardous substances? ›

There are eight key hazard classes:
  • Class 1: explosives.
  • Class 2: flammable gases.
  • Class 3: flammable liquids.
  • Class 4: flammable solids.
  • Class 5: oxidising substances.
  • Class 6: substances toxic to people.
  • Class 8: corrosive substances.
  • Class 9: substances toxic to the environment.
Sep 12, 2017

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