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




ECHA - Safer Chemicals Recordings Available
On the 6th October 2021 The European Chemicals Agency (ECHA) held its safer Chemicals conference. CHCS members can read more on our News Briefings page[Posted on 20 October 2021]

CHCS' October 2021 Newsletter is now available, containing several important updates on the many recent changes to the regulation framework. See CHCS October 2021 Newsletter. 

GHS Revision 9 
Globally Harmonised System (GHS) Revision 9 has been published and is available online in both English and French. CHCS members can read more on our News Briefings page. [Posted on 20 September 2021]

UK Cosmetics Regulation
A new web page in the extensive set of Legislation pages on this website. For more details, see our Legislation web page[Posted on 1 September 2021]

MLA 340 And RID 06/2021 Counter-Signed By The United Kingdom
The United Kingdom has counter-signed Multilateral Agreement 340 and RID 06/2021 permitting sodium-ion batteries and sodium-ion cells using an organic electrolyte, or sodium-ion batteries and sodium-ion cells using an organic electrolyte contained in equipment or packed with equipment, to be carried without assignment of a UN number. CHCS members can read more on our News Briefings page. [Posted on 20 August 2021]

Publication Of The Draft 18th ATP To The CLP Regulation
The European Commission has published the draft 18th adaptation to technical progress (ATP) to Regulation (EC) 1272/2008 on the classification, labelling and packaging of substances and mixtures (the CLP Regulation). CHCS members can read more on our News Briefings page. [Posted on 17 August 2021]

Dangerous Emails Disguised As Coming From NPIS
Beware of potentially dangerous emails disguised as coming from the National Poisons Information Service - NPIS, which include attachments which the email encourages you to click. CHCS members can read more on our News Briefings page. [Posted on 29 July 2021]

SDS Will Be The Focus For Enforcement In 2023
At the most recent Enforcement Forum meeting it was agreed that safety data sheets (SDS) would be the main focus for 2023. CHCS members can read more on our News Briefings page. [Posted on 20 July 2021]

Government Updates Their Guidance On Poison Centres
The guidance page on poison centres has been updated with additional information on 'How to generate a UFI if you are a company based outside the EU or if you do not have a VAT number.' CHCS members can read more on our News Briefings page. [Posted on 29 June 2021]

Webinar: Substance Identity Testing Requirements for UK REACH
The presentation and recording from our webinar held on 22 June 2021 are now available to members linked from the Past Events page of our website. [Posted on 22 June 2021]

CHCS 2021 AGM & Annual Lectures
We are delighted to announce this year's AGM & Annual Lectures, taking place online over two afternoons: 22 & 23 November 2021. Details and timings to be confirmed, but registration now open. For more information, please see: CHCS 2021 AGM. [Posted on 21 June 2021]

Inception Impact Assessments (Roadmaps) For REACH & CLP - deadline 23:00 GMT, 1 June 2021
It is not too late to respond to the Inception Impact Assessments (Roadmaps) for the planned revisions to the REACH and CLP Regulations. CHCS members can read more on our News Briefings page. [Posted on 31 May 2021]

Poison Centre Practical Guide updated
The European Chemicals Agency (ECHA) have their practical guide relating to poison centre notifications. CHCS members can read more on our News Briefings page. [Posted on 20 May 2021]

ECHA Survey On Recycling Of Waste (deadline to respond: 27 April 2021)
The European Chemicals Agency is inviting stakeholders with ‘an interest in chemical recycling’ to respond to a short survey, which will feed into a larger study on chemical recycling of waste. CHCS members can read more on our News Briefings page. [Posted on 26 April 2021]

The Dangerous Goods Emergency Action Code List 2021
The new list has again been produced by the NCEC, in co-operation with the UK Home Office, and is published by TSO. CHCS members can read more on our News Briefings page. [Posted on 26 April 2021]

ECHA Updates Poison Centre Guidance
The European Chemicals Agency (ECHA) have updated their poison centres guidance document. Now on Version 4.0 the updated document gives information on some of the sector specific workability challenges. CHCS members can read more on our News Briefings page. [Posted on 6 April 2021]

Webinar: “Brexit - Do You Know What You Don't Yet Know?”
The presentations and recording from our webinar held on 1 April 2021 are now available to members linked from the Past Events page of our website. [Posted on 1 April 2021]

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.

To register for access to the video, please visit our video registration page: Endocrine Disruptors Video Registration.

[Posted on 1 July 2019]

CHCS News Summary
  • Update From HSE On UK REACH
    (5 March 2021)

  • Updates To ECHA’s Brexit Pages and Q&As
    (17 March 2021)

  • Update From HSE On UK REACH
    (5 March 2021)

  • The GB Mandatory Classification and Labelling (MCL) List
    (1 February 2021)

  • Update to Canada GHS (Aligned with 7th Edition) (26 January 2021)

  • UK Exit Of EU: Resources To Help As Transition Period Ends (11 December 2020)

  • End Of UK Transition Period – HSE Podcasts Series (9 December 2020)

  • Second Amendment Of Annex VIII of CLP (Poison Centres) Is Published (23 November 2020)

  • Poison Centre Portal Updated (30 October 2020)

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

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