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CHCS  Chemical Hazards Communication Society  Promoting the awareness of chemical hazards & improvements in their identification & communication

Useful Chemical Hazard Websites

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Note: The Members Only area of this website contains a detailed Glossary, which contains many very specific links from the explanation of the acronym or term to the full text. Be sure to consult this when appropriate. (Not a Member and can't access the additional and valuable Members Only resources? Then why not join the CHCS? See our CHCS Membership pages for subscription information).


The following links are to the home pages of other bodies and organisations that may be of help.

  • British Association of Dangerous Goods Professionals (BADGP)
    Supports professional people working with Dangerous Goods in whatever mode of transport. 

  • British Health and Safety Executive

  • Canadian Centre for Occupational Health and Safety (CCOHS)
    Promotes a safe and healthy working environment by providing information and advice about occupational health and safety, including advice on chemical and biological hazards and their control.

  • CDG
    The HSE Safety Directorate's special section on the Carriage of Dangerous Goods.

    the European Chemical Industry Council, is both the forum and the voice of the European chemical industry.

  • Chemical Classification
    HSE website pages providing an introduction to the basics of classification, and where you can find detailed help and advice.

  • CLP
    The Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures, and amending Directive 67/548/EEC and Regulation (EC) No 1907/2006 (in short CLP) which is the EU harmonisation of its supply of hazardous chemicals legislation with that of the UN’s GHS system.

  • Classification and Labelling Inventory (CLI)
    This CLI database contains classification and labelling information on notified and registered substances received from manufacturers and importers. It also includes the list of partly harmonised classifications in Table 3.1 (CLP style classifications) of Annex VI to the CLP Regulation. For an electronic version of Table 3.2 (DSD style classifications) see Annex I above.

    Note: Apart from the official partially harmonised classifications, all other classifications have been provided by companies as part of registration dossiers or as notification as required by CLP. Whilst ECHA maintains the CLI it does not review or verify the accuracy of the information.

    Note: The number of notifications and substances in the database will increase over time as companies submit more C&L notifications and registration dossiers. As such, the data in the public inventory itself is refreshed on a regular basis.
  • Comprehensive occupational health and safety web site

  • DEFRA (Department for the Environment, Food and Rural Affairs) 
    DEFRA’s chemicals pages are a source of information on what the Government is doing to protect the environment - and, consequently, human health - from the risks posed by exposure to hazardous chemicals. At the same time, the Government aims to maximise the important socio-economic benefits that we rely on chemicals for.

    Whether a chemical represents a hazard or not depends on its scientific properties. Defra's job is to manage the risks relating to such hazards, that is, the chances of a hazard leading to the harm of humans or the environment.

  • DEFRA, Food and Rural Affairs - UK Chemicals Stakeholder Forum (CSF)
    The principal function of the Forum is to advise the Government on how industry should reduce the risks from hazardous chemicals to the environment and to human health through the environment.

  • Department for Transport (DfT) Dangerous Goods section
    Are responsible for UK negotiations at the UN Sub Committee of Dangerous Goods and the ADR and RID meetings.

  • Department for Transport (DfT) Transport Security section
    Department for Transport (DfT) Transport Security section whose aim is to protect the travelling public, transport facilities and those employed in the transport industries against acts of terrorism, other illegal acts, and to retain public confidence in transport security.

  • Emergency Action Code (EAC) List 2019 This list has again been produced by the NCEC, in co-operation with the UK Home Office, and is published by TSO. The EAC List 2019 is effective immediately in connection with the use of ADR/RID 2019 Edition and is mandatory from 1 July 2019. The Emergency Action Code List 2017 should no longer be used from that date.

  • Environment Agency
    The leading public body for protecting and improving the environment in England and Wales.

  • ERICards or ERIC's - CEFIC Emergency Response Intervention Cards
    These provide guidance on initial actions for fire crews when they first arrive at the scene of a chemical transport accident without having appropriate and reliable product specific emergency information at hand.

  • The Emergency Response Guidebook (ERG2012) was developed jointly by the US Department of Transportation, Transport Canada, and the Secretariat of Communications and Transportation of Mexico (SCT) for use by firefighters, police, and other emergency services personnel who may be the first to arrive at the scene of a transportation incident involving a hazardous material. It is primarily a guide to aid first responders in (1) quickly identifying the specific or generic classification of the material(s) involved in the incident, and (2) protecting themselves and the general public during this initial response phase of the incident. The ERG is updated every three to four years to accommodate new products and technology. The next version is scheduled for 2012.

  • European Agency for Safety and Health at Work
    The UK Focal Point of the European Agency for Safety and Health at Work. The role of the European Agency for Safety and Health at work, (the Agency) is to support the exchange of information between the European Union (EU) Member States. The site also provides information about the UK Information Network.

  • European Chemicals Agency (ECHA)

  • Globally Harmonised System of Classification and Labelling of Chemicals (GHS).
    The UN site with news and information about the GHS and full text (downloadable as pdf files)


  • Health and Safety Commission/Executive Press Releases
    This page contains links to the text of Health and Safety Commission and Health and Safety Executive press releases.

  • HSE Enforcement action

  • HSE Public Register Of Convictions
    This site gives details of prosecution cases taken by Health & Safety Executive (HSE), which resulted in a successful conviction.

  • HSE Public Register Of Enforcement Notices
    This site gives details of enforcement notices issued by the Health &Safety Executive (HSE).

  • HSE - What's new on the HSE website
    This page lists items added to the HSE website over the last three months.

  • The International Occupational Safety and Health Information Centre/International Labour Organization (ILO/CIS) server offers information in French and English on their products, services, publications, conventions, IPCS chemical safety cards.

  • Instructions in Writing (IiW)
    As an aid during an accident emergency situation that may occur or arise during carriage, instructions in writing in the form specified in of ADR shall be carried in the vehicle crew’s cab and shall be readily available. These instructions shall be provided by the carrier to the vehicle crew in language(s) that each member can read and understand before the commencement of the journey. This site gives access to many language versions of the IiW.

    This website is managed by The National Archives on behalf of HM Government. Publishing all UK legislation is a core part of the remit of Her Majesty’s Stationery Office (HMSO), part of The National Archives, and the Office of the Queen's Printer for Scotland. The original (as enacted) and revised versions of legislation on are published by and under the authority of the Controller of HMSO (in her capacity as The Queen's Printer of Acts of Parliament, and Government Printer of Northern Ireland) and the Queen's Printer for Scotland.

  • The UK's National Chemical Emergency Centre
    a world leading authority on dealing with chemicals and compliance on health, safety and environmental matters.

  • National Toxicology Program
    based at the US National Institute of Environmental Health Sciences, the server details NTP publications and events. The NTP was established in 1978 in USA by the Secretary of Health and Human Services to coordinate toxicology research and testing activities within the Department, to provide information about potentially toxic chemicals to regulatory and research agencies and the public, and to strengthen the science base in toxicology. In its seventeen years, the NTP has become the world's leader in designing, conducting, and interpreting animal assays for toxicity/carcinogenicity

    The NTP consists of relevant toxicology activities of the National Institutes of Health's National Institute of Environmental Health Sciences (NIH/NIEHS), the Centers for Disease Control and Prevention's National Institute for Occupational Safety and Health (CDC/ NIOSH), and the Food and Drug Administration's National Center for Toxicological Research (FDA/NCTR). The NIH's National Cancer Institute (NIH/NCI) was a charter agency; however, the NCI Carcinogenesis Bioassay Program was transferred to the NIEHS in 1981. The NCI remains active in the Program through membership on the NTP Executive Committee


  • Organisation for Economic Co-operation and Development
    deals with Chemical Inventories et al

  • Proposition 65
    (click on "Proposition 65" from the left column) from the California Office of Environmental Health Hazard Assessment (OEHHA)

  • REACH (HSE) mini-site

  • Safety related internet resources
    from the Canadian Centre for Occupational Health and Safety lists web, gopher and FTP servers, newsgroups, mailing lists and electronic publications on health and safety

  • SCHC
    The US Society for Chemical Hazard Communication

  • Scottish Environment Protection Agency - SEPA
    Scotland’s environmental regulator and adviser.
  • US National Safety Council
    The US National Safety Council serves as the nation's leading resource on industry trends, professional development, and strategies for advancing safety and health programs and practices. The Council is active in converting injury research and trends information into injury prevention education, training, consultation and advocacy leadership.

  • UNECE Transport Division – Dangerous Goods
    access to the UN Economic Commission for Europe Dangerous Goods site with access to information on the UN Model Regulations (Orange Book) and UN Globally Harmonised System of Classification and Labelling of Chemicals (GHS) (Purple Book) and well as ADR (including access to lists of multi-lateral special agreements under ADR) and ADN information.!

  • US Environmental Protection Agency
    includes useful information on EPA legislation and an infuriatingly organised list of press releases

  • US Occupational Health and Safety Administration
    safety and health links on the Internet, including draft OSHA proposals, federal register and standards, and links to NIOSH and safety datasheets

  • VCA Dangerous Goods
    VCA have responsibility for the certification of dangerous goods packaging within the UK, and act as advisors to the Department for Transport (DfT) Dangerous Goods International negotiation team.

  • Canada's WHMIS (Workplace Hazardous Materials Information System) This Government of Canada site provides information on chemical hazard classification; preparation of labels and MSDSs (including ingredient disclosure); language requirements; MSDS toxicological and PPE disclosure; trade secret provisions; use of the 16-heading MSDS format in Canada; Globally Harmonized System for hazard communication; PLUS high-resolution files for hazard symbols and label borders; an indexed Reference Manual; data sheets for infectious agents (including anthrax); and much more.

  • World Health Organization
    list of health-related web servers, with some useful links to organisations involved in occupational health

  • Workplace Safety: A Practical Guide for Your Business and Employees




CHCS' November 2023 Newsletter is now available, containing several important updates on the many recent changes to the regulation framework. See CHCS November 2023 Newsletter. [Posted on 17 November 2023]

DEFRA Publishes a Policy Statement on the New UK REACH Alternative Transitional Registration Model
The Department for Health and Rural Affairs (DEFRA) has published an outline of the new approach to UK REACH registration, following the commitment from Government to explore options for an Alternative Transitional Registration model (ATRm). CHCS members can read more on our News Briefings page [Posted on 16 November 2023]

GB CLP Mandatory List is Updated for the First Time
The Great Britain Mandatory Classification list (GB MCL) has been updated with new and revised GB MCLs for 98 substances. CHCS members can read more on our News Briefings page [Posted on 23 October 2023]

European Union Proposal for a Regulation on the Safety of Toys Notified to the WTO-TBT Committee
The European Union (EU) has notified a proposal for a new Regulation on the Safety of Toys to the World Trade Organisation, Technical Barriers to Trade (WTO-TBT) Committee, repealing Directive 2009/48/EC. CHCS members can read more on our News Briefings page [Posted on 5 October 2023]

EU Public Consultations – Candidate List Substances of Very High Concern
Public consultations are open on proposals for six substances identified as Candidate List substances of very high concern (SVHC) for authorisation of use, under European Union (EU) REACH. CHCS members can read more on our News Briefings page [Posted on 3 October 2023]

Germany Withdraws Proposal to Restrict Endocrine-Disrupting Bisphenols
Germany has withdrawn its proposal for the restriction of substances with endocrine-disrupting properties, specifically targeting bisphenols and their salts. CHCS members can read more on our News Briefings page [Posted on 27 September 2023]

Public Consultation on the Product Safety Regulatory Framework
The Department of Business and Trade (DBT) and the Office for Product Safety and Standards (OPSS) have issued a public consultation seeking views on the planned approach to product safety to ensure that the regulatory framework is ‘fit for the future.’ CHCS members can read more on our News Briefings page [Posted on 26 September 2023]

The UK REACH service team in The Department for Environment Food and Rural Affairs (DEFRA), are looking for users of the service to complete a survey. CHCS members can read more on our News Briefings page [Posted on 20 September 2023]

DFT Publishes Post Implementation Review of CDG Regulations
The Department for Transport (DfT) have published the results of the Post Implementation Review of amendments to the Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009, as amended in 2011, 2019 and 2020. CHCS members can read more on our News Briefings page [Posted on 6 September 2023]

United Kingdom Notifies Mandatory Classification and Labelling of 26 Substances to the World Trade Organisation
A proposed update to the Great Britain (GB) mandatory classification and labelling of 26 substances has been notified to the World Trade Organisation, Technical Barriers to Trade Committee (WTO-TBT) by the United Kingdom. CHCS members can read more on our News Briefings page [Posted on 29 August 2023]

Model Regulations, 23rd Revised Edition
The United Nations Recommendations on the Transport of Dangerous Goods, Model Regulations, 23rd Revised edition is now available in English and French. CHCS members can read more on our News Briefings page [Posted on 29 August 2023]

IATA Publishes Significant Changes to the 64th Edition of the Dangerous Goods Regulations
The International Air Transport Association (IATA) have published the significant changes to the 64th edition of the Dangerous Goods Regulations (DGR). CHCS members can read more on our News Briefings page [Posted on 24 August 2023]

GHS Revision 10 Published
Globally Harmonised System (GHS) Revision 10 has been published and is available online in English and French. CHCS members can read more on our News Briefings page [Posted on 7 August 2023]

EU REACH: PFAS Restriction Proposals
The European Chemicals Agency (ECHA) Committee for Socio-economic Analysis (SEAC) has adopted a final Opinion on the restriction proposal submitted in January 2022, concerning the use of firefighting foams containing PFAS.  CHCS members can read more on our News Briefings page [Posted on 28 July 2023]

20th ATP to CLP Published
Commission Delegated Regulation (EU) 2023/1435 of 2 May 2023 amending Regulation (EC) No 1272/2008. CHCS members can read more on our News Briefings page [Posted on 25 July 2023]

19th ATP to CLP Published
Commission Delegated Regulation (EU) 2023/1434 of 25 April 2023 amending. CHCS members can read more on our News Briefings page [Posted on 21 July 2023]

NEW - Module 81 on the New CLP Hazard Classes for Experienced Classifiers
This new training module is designed to give delegates an understanding of the new CLP hazard classes. CHCS members can read more on our News Briefings page [Posted on 18 July 2023]

CHCS Webinar: Hot Takes on Firefighting Measures
CHCS have now published the slides and recording from the webinar. CHCS members can access these on the Past Events page of our website. [Posted on 14 July 2023]

NEW - Module 16 on CLP Classification Extended to Include the New CLP Hazard Classes
Module 16 which covers CLP classification criteria for all CLP hazard classes has been updated to include the new CLP hazard classes for endocrine disruptors, PBT & vPvB, PMT & vPvM. CHCS members can read more on our News Briefings page [Posted on 7 July 2023]

CHCS Autumn Training Dates Released
CHCS have now released the Autumn training course dates. For more information, please view the Training page of our website. [Posted on 3 July 2023]

ECHA is Developing a New Data Availability System
A new Data Availability System is being developed by the European Chemicals Agency, ECHA. The first version is expected to be publicly available by the end of 2023. CHCS members can read more on our News Briefings page [Posted on 2 June 2023]

Proposed New Regulation on Detergents and Surfactants
The European Commission has published a proposal for a regulation on detergents and surfactants, amending Regulation (EU) 2019/1020, and repealing Regulation (EC) No 648/2004. CHCS members can read more on our News Briefings page [Posted on 31 May 2023]

Annex VIII of CLP to be Revoked
Under the Schedule of retained EU law it has been announced that Annex VIII of the Annex VIII of Regulation (EC) No 1272/2008 on classification, labelling and packaging (CLP) will be revoked. CHCS members can read more on our News Briefings page. [Posted on 22 May 2023]

Endocrine Disruptors - 1st CHCS Video

We have produced our first video for members: "Endocrine Disruptors", which is available to members free-of-charge.

This introductory video explains the various components of the human endocrine system and how they interact, to help understand the mechanisms of endocrine disruptors on human systems.

The video is just over 10 minutes long.

For access to the video, please visit: Endocrine Disruptors Video.

[Posted on 1 July 2019]

CHCS News Summary
  • (20 April 2023) DfT Consultation on Temporarily Increasing the Permitted Weight of Road Tankers Carrying Diesel

  • (17 April 2023) The Control of Explosives Precursors and Poisons Regulations 2023

  • (13 April 2023)United Kingdom Signposts the World Trade Organisation, Technical Barriers to Trade Committee of the GB Mandatory Classification and Labelling List

  • (4 April 2023)2nd IATA Addendum to the 64th Edition of the DGR

  • NCEC and DfT Newsletter
    (8 March 2023)

  • 21st ATP to CLP Notified to the WTO-TBT Committee
    (7 March 2023)

  • Titanium Dioxide Appeal by France
    (20 February 2023)

  • UK Government Response to EU’s Proposal for New CLP Hazard Classes
    (13 February 2023)

  • Progress Update on New EU CLP Classes
    (19 December 2022)

  • IATA Addendum to the 64th Edition of the DGR
    (16 December 2022)

  • Publication of GB Mandatory Classification and Labelling (GB MCL) Technical Reports
    (12 December 2022)

  • Publication of GB Mandatory Classification and Labelling (GB MCL) Agency Opinions
    (9 December 2022)

  • Call For Evidence: Investigation Report on Polyvinyl Chloride and its Additives
    (7 December 2022)

            CHCS Members can read these News items, and older posts, on the CHCS News Briefings page.

            Next 3 CHCS Training Courses:

            For a full list of our CHCS Training Courses, please visit our Training page. 

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