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Dangerous Goods Classes & Regulations - Flammable Liquids

An in-depth look at one of the nine classes of dangerous and hazardous goods: Class 3 – Flammable Liquids

Shipping Class 3 Dangerous Goods

There are a total of nine dangerous/hazardous goods classes that we use day in day out both at Tudor an in the logistics sector in general. Each product can cause ranging damage to both human health and the environment. Depending on what said product is made up of and what damage they can cause, they are placed into one of the nine categories.

On the Tudor website you will find information in respect of each class of the nine classes of dangerous goods. If you want a full overview of the dangerous goods topic before delving in to the specifics, be sure to check out our previous blog here.


What is a Class 3 Dangerous Good?

Class 3 Dangerous Goods are one of the most commonly transported hazardous goods. Class 3  dangerous goods refers to liquids that have a flash point of no more than 60 degrees Celsius. Class three flammable liquids have potential to cause a serious threat due to their volatility and combustibility.

If you're looking for Flammable Solids, you can read our blog about those instead, here.


Flammable Liquids - Packing Groups

Although flammable liquids aren’t placed into sub-divisions similar to some of the other classes of dangerous goods, they are placed in 'packing groups'. A packing group will allow the shipper to ensure that the right packaging materials are used when transporting a particular type of hazardous cargo.

The table below shows the packing groups that flammable liquids are placed under.


Packing Group

Initial Boiling Point

Flashpoint (Closed Cup)

Packing Group I

Boiling Point Below 35 Degrees


Packing Group II

Boiling Point Above 35 Degrees

Flashpoint Below 23 Degrees

Packing Group III

Boiling Point Above 35 Degrees

> 23 Degrees & < 60 Degrees


You will be able to determine the packing group of a flammable liquid by reading through the Material Safety Data Sheet (MSDS) of that specific product.


Flammable Liquid Sign

Class 3 Dangerous Goods need to carry the correct label when being transported. The labels are very easy to make out as they are a flame symbol, coloured either black or white and have the number 3 below them. See below for example:


Do Any of Your Goods Fall Into The Category of Class 3: Dangerous Goods?

Commonly Transported Class 3: Flammable Liquids

There are quite a few commonly used liquids which fall under the category of class 3 dangerous goods. We have noted some of these below:

  • Acetone
  • Adhesives
  • Paints / Varnishes
  • Gasoline
  • Perfume
  • Ethanol
  • Methanol
  • Some Pesticides (With Flammable Solvents)


If you have any other questions or concerns surrounding Dangerous Goods or Flammable Liquids as a specific, or are just unsure what category your goods fall under, please do not hesitate to get in touch and we will be happy to help -

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