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

Safety Data Sheets (SDS) - Frequently Asked Questions

What does the legislation require concerning the SDS Compiler Competence?

The European Union legislation concerning compilation of Safety Data Sheets (SDSs) requires that the person compiling an SDS be "competent" (reference: REACH Regulation 1907/2006 Annex II Requirements for the compilation of Safety Data Sheets, para 0.2.3 of the introductory comments). The Regulation then says "Suppliers of substances and mixtures shall ensure that such competent persons have received appropriate training, including refresher training."

There is no further official EU requirement or guidance as to what constitutes appropriate training/refresher training. There is no EU or UK Government controlled, or approved, examination system with a set pass level and certification.

The requirement means that training should be given, or if applicable suitably refreshed, BEFORE a person is required by the employer to write or amend a Safety Data Sheet.

CHCS runs modular training for SDS writers, and the concept here is that the intended SDS compiler need only attend those modules of relevance - e.g. if the person is a toxicologist then there is no need to attend Module 5 – Basic Toxicology. Also it may be that the company has a person responsible for certain aspects of the tasks involved in order to compile an SDS, e.g. a Dangerous Goods Safety Adviser (DGSA) providing the data for Section 14 may obviate the need for the SDS compiler to attend Module 8, Classification for Transport, and Module 10, Transport Labelling and Documentation.

The full list of current training modules can be found on the Training page of this website.

CHCS normally offers each Module at least once a year. Where there is sufficient demand, modules may be offered more frequently. If you would like to attend a Module that is not currently advertised, or for which is not due to be run for some time, please do get in touch with the office to let us know of your interest. Where there is sufficient interest, we will look at running additional Modules when feasible.

If you want to attend all of the modules, it might mean that it could take up to a year to become "competent" enough to undertake SDS compilation. For that reason you might want to consider running some of the Modules in-house or utilising a suitable CHCS listed consultant to carry out initial training to an adequate level to meet the legal requirements, with later attendance at some of the Modules to supplement, reinforce, extend or refresh this initial competence.

Do the REACH regulations allow us to publish Safety Data Sheet updates on the internet and inform our customers that they can access them rather than having to supply hard copies?

REACH Regulation Article 31(8) says that you shall 'provide' a safety data sheet free of charge, on paper or electronically to the recipient. The word ‘provide’ implies a positive duty on behalf of the supplier to actively send the Safety Data Sheet to the customer. Simply posting this information on your website and passively allowing users to find the Safety Data Sheet is 'making available' the information and not 'providing' it and therefore you would not be complying with REACH.

Some suppliers have questioned whether it is ok to send a link to a Safety Data Sheet on a website by email instead of attaching, for example, a PDF document. Sending a link to your general website that would require customers to then search for and download this document would not be considered an acceptable way of providing this information.

There is an ongoing discussion over whether it is acceptable to provide a direct link in an email to some or all of the Safety Data Sheet. This discussion is particularly relevant where extended Safety Data Sheets with many exposure scenarios need to be provided. In such a case it is likely that there would be some conditions to providing information in this way. For example, the supplier would need to ensure that the URL of the Safety data Sheet did not change for a reasonable length of time in case their website was redeveloped, that recipients and perhaps Member State Competent Authorities might have to agree this in advance, and so on.

Do I have to supply overseas customers with SDSs in their language?

For supply within the EU/EEA, REACH Article 31(5) says that the SDS shall be supplied in an official language of the Member State(s) where the product is placed on the market, unless the MS provides otherwise.

For supply outside of the EU/EEA, Article 17 of the PIC Regulation requires that a REACH-compliant SDS should be given to the non-EU/EEA customer, and that, far as practicable, this should be given in the official languages, or in one or more of the principal languages, of the country of destination or of the area of intended use.

Whose name and address should appear in section 1 of the SDS?

The name and address should be that of the supplier placing the substance or mixture on the EU/EEA market whether that is the manufacturer, importer, only representative, downstream user or distributor.

If the supplier is outside the EU/EEA (note: even if in Switzerland) then an EU/EEA name & address is mandatory. In addition to the name and address of the EU/EEA supplier, details of the non-EU/EEA manufacturer or formulator can be optionally provided.

If a mixture has been classified as non-hazardous does that mean that I don’t need to produce a Safety Data Sheet?

It’s not necessarily true that non-hazardous chemicals are not regulated by the REACH Regulation. Article 31(3) of REACH sets out requirements for Safety Data Sheets to be prepared and provided on request to customers for mixtures that are not classified as hazardous but which contain

  • hazardous substance(s) classified in respect of their health or environmental effects ≥1% for non-gaseous substances and ≥0.2% for gaseous substances
  • substance(s) classified as PBT or vPvB, or otherwise included on the Candidate List ≥0.1%
  • substance(s) for which there is a Community Workplace Exposure Limit

In this case the supplier must also label the mixture with the statement (EUH210) "Safety data sheet available for professional user on request".

Do you recommend any software for creating and managing safety data sheets?

CHCS does not recommend any particular software. A list of some of the main providers of SDS compiling software can be found on the website of the German competent authority BAuA at


The Deadline To Submit A Downstream User Notification (DUIN)
The deadline to submit a downstream user notification (DUIN) is almost here. CHCS members can read more on our News Briefings page[Posted on 26 October 2021]

The Carriage Of Dangerous Goods And Use Of Transportable Pressure Equipment Regulations Amendments Now Combined
The Dangerous Goods division of the Department for Transport (DfT) had been planning a consolidation of all the existing regulations on the carriage of dangerous goods, so that the UK industry need refer only to one Statutory Instrument. CHCS members can read more on our News Briefings page[Posted on 21 October 2021]

The Carriage Of Dangerous Goods And Use Of Transportable Pressure Equipment Regulations 2009 Amended
The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009 has been amended by the Radiation Emergency and Consultation Regulations 2021. CHCS members can read more on our News Briefings page. [Posted on 21 October 2021]

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



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