UN GHS-The 7th Revised Edition has been Published

The UN Globally Harmonized System of Classification and Labeling of Chemicals (GHS) is an international system created by the UN to address the classification of chemicals by types of hazard and harmonize hazard communication elements, including labels and safety data sheets. UN GHS is updated every two years and the 6th revised edition was released in 2015. In July 2017, the 7th revised edition of the GHS was published. 

Compared with the 6th revised edition, major changes in the 7th revised edition are as follows: 

1. The criteria for categorisation of flammable gases were revised. 

In the 7th rev., a flammable gas is classified in Category 1A, 1B or 2 according to the following table. Flammable gases that are pyrophoric and/or chemically unstable are always classified in Category 1A (See table 1).

Table 1: Flammable gases

2. A new example for fold-out labels for small containers was added. 

Enterprises may use fold-out labels when the container is small and there are a large number of hazard statements assigned to the chemical, or the information needs to be displayed in multiple languages, so that the information may not be printed on the label in a size that is easily legible (see picture 1).

Picture 1: Fold-out labels

Relevant information must be shown in the front page and the pages inside. Details are as follows:

Front page

Information to be provided on the front page of the multilayer/fold-out label should contain at least: 

GHS information:

  • Product identifier
  • Hazard pictogram(s)
  • Signal word
  • Supplier identification (name, address and telephone number of the company)

Additional information:

  • A symbol to inform the user that the label can be opened to illustrate that additional information is available on inside pages

Text pages/Pages inside

GHS information:

  • Product identifier including, as applicable, hazardous components contributing to the classification
  • Signal word
  • Hazard statements
  • Precautionary statements
  • Additional information (e.g. directions for use, information required by other regulations, etc.)

Additional information:

  • If more than one language is used on the fold-out label: the country codes or language codes

Back page (affixed to the immediate container):

  • Product identifier
  • Hazard pictogram(s)
  • Signal word
  • Supplier identification (name, address and telephone number of the company)

Additionally, there are different fold-out labels styles e.g. book style, order book style and window style.

Book style

Order book style

Window Style

3. Definition of some health hazards has been revised

The definitions of “Skin corrosion”, “Skin irritation”, “Serious eye damage”, “Eye irritation”, “Dermal corrosion” , “Dermal irritation”, “Respiratory sensitizer”, “Specific target organ toxicity”, “Reproductive toxicity”, “Carcinogenicity” are slightly updated. 

4. A new precautionary statement P503 is added for some explosives.


Disposal precautionary statements

Hazard class


Hazard category


Conditions for use



Refer to manufacturer/ supplier/… for information on disposal/recovery/ recycling



Unstable explosives and Divisions 1.1, 1.2, 1.3, 1.4, 1.5


… Manufacturer/supplier or the competent authority to specify appropriate source of information in accordance with local/regional/national/international regulations as applicable

If you have any other questions, please contact us at service@cirs-reach.com.

Further Information

Official news

Amendments to the sixth revised edition of the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)

Introduction to UN GHS

UN GHS 7th edition