Safety data sheet rules and the 16 sections used in Ireland
A safety data sheet explains chemical hazards and safe use. Learn when Irish suppliers must provide one, its 16 sections and how to check for updates.
A safety data sheet (SDS) explains a chemical's hazards and the measures needed for safe handling, storage, use and disposal. In Ireland, REACH requires suppliers to provide a 16-section SDS for qualifying substances and mixtures, with some supplied on request. The Health and Safety Authority (HSA) describes it as the primary means of communicating chemical hazards and risk-control measures.
Use the document to inform your workplace chemical risk assessment. It does not replace that assessment: the SDS provides chemical information, while the assessment must address your actual work. REACH Annex II requires information that helps employers identify hazardous chemical agents and assess their risks.
When must a supplier provide a safety data sheet?
Under REACH Article 31(1), suppliers must provide an SDS when:
- A substance or mixture meets the CLP criteria for classification as hazardous.
- A substance meets the REACH Annex XIII criteria for persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB).
- A substance appears on the REACH Candidate List for reasons other than those already covered above.
The duty does not mean that every chemical, finished article or mixture containing a Candidate List substance automatically needs an SDS. Check the applicable conditions rather than relying on the product's name or general description.
Non-classified mixtures and requests
A mixture can need an SDS on request even when it is not classified as hazardous. Article 31(3) includes these cases:
- A substance hazardous to human health or the environment is present at an individual concentration of at least 1% by weight in a non-gaseous mixture. For gaseous mixtures, the threshold is at least 0.2% by volume.
- Certain substances are present at at least 0.1% by weight in a non-gaseous mixture. These include category 2 carcinogens, category 1A, 1B or 2 reproductive toxicants, and category 1 skin or respiratory sensitisers. The provision also covers substances with effects on or via lactation, PBT/vPvB substances and relevant Candidate List substances.
- The mixture contains a substance with a Community workplace exposure limit. This provision gives no numerical concentration threshold.
These thresholds apply to individual substances, not the sum of ingredients. The examples are not an exhaustive list of current SDS-request triggers. Check the full Article 31 provision and applicable CLP hazard-class rules when deciding a borderline case.
Products sold to the public
There is a qualified exception for hazardous products offered or sold to the general public. An SDS need not routinely accompany them where sufficient information allows users to protect health, safety and the environment. But a downstream user or distributor can still request one under Article 31(4).
Delivery and language
Where required, the supplier must provide the SDS free of charge, on paper or electronically, no later than first supply. Article 31 also requires an official language of the Member State where the product enters the market, unless that state provides otherwise. Ask your supplier for a version your workplace can use, and check the applicable national language requirements.
The 16 safety data sheet sections
REACH Annex II fixes the section headings and required content. This table shows where to find information when reading an SDS. It is not a full authoring checklist.
| Section | Required heading | What to look for |
|---|---|---|
| 1 | Identification of the substance/mixture and of the company/undertaking | Product identity, uses, supplier and emergency contact |
| 2 | Hazards identification | Classification, label elements and other hazards |
| 3 | Composition/information on ingredients | Relevant ingredient identities and composition information |
| 4 | First aid measures | Exposure response, symptoms and medical attention |
| 5 | Firefighting measures | Extinguishing media, special hazards and responder precautions |
| 6 | Accidental release measures | Personal and environmental precautions, spill clean-up |
| 7 | Handling and storage | Safe handling, storage conditions and specific end uses |
| 8 | Exposure controls/personal protection | Exposure limits, engineering controls and personal protective equipment |
| 9 | Physical and chemical properties | Properties such as physical state, flash point and solubility |
| 10 | Stability and reactivity | Incompatibilities, hazardous reactions and conditions to avoid |
| 11 | Toxicological information | Health effects and relevant toxicological data |
| 12 | Ecological information | Environmental toxicity, persistence and related effects |
| 13 | Disposal considerations | Waste treatment information for product and packaging |
| 14 | Transport information | Applicable dangerous-goods transport information |
| 15 | Regulatory information | Relevant legislation and chemical safety assessment status |
| 16 | Other information | Revisions, abbreviations, references and explanatory information |
Sixteen headings do not establish compliance. Required subsections must not be blank. Section 3 uses subsection 3.1 for a substance or 3.2 for a mixture, as applicable. Check the information beneath the headings against the Annex II requirements.
How to check an SDS at an Irish workplace
Start with the supplied container. Compare its product identifier with section 1, then compare the CLP label with section 2.2. Check that supplier and emergency contact details are usable. These practical checks follow HSA guidance and Annex II.
Next, read sections 4 to 8 against the work being done. Use them to plan first aid, spill response, handling, storage and exposure controls. In section 8, check for relevant Irish occupational exposure limits where applicable. Identify the revision date, version and changes before relying on an existing copy. These are practical review steps, not a separate statutory checklist. HSA SDS guidance explains the national points to check.
Where exposure scenarios are attached, compare their uses and conditions with your actual use. Not every SDS needs these annexes. If your use is not covered, REACH Article 37 can create further duties. Requesting another copy alone does not settle the issue.
Keep the information accessible. Article 35 requires employers to give workers and their representatives access to relevant Article 31 and 32 information. This covers substances and mixtures they use or may encounter through workplace exposure. Article 34 also addresses passing new hazard information, or concerns about risk-management measures, back up the supply chain.
Does a safety data sheet expire?
REACH does not set a universal annual expiry date or a fixed three- or five-year replacement cycle. Under Article 31(9), suppliers must update the SDS without delay when:
- New hazard information becomes available, or new information may affect risk-management measures.
- An authorisation is granted or refused.
- A restriction is imposed.
The supplier must send the new dated version free to former recipients supplied during the preceding 12 months. Updates after registration must include the registration number. An old issue date alone does not prove invalidity, but check with the supplier whether a later version exists.
The format also matters. Regulation (EU) 2020/878 replaced Annex II and applied from 1 January 2021. Its transition allowed non-complying SDSs to continue to be provided until 31 December 2022. That allowance ended before 2023, so it cannot justify supplying an outdated format today.
MSDS and SDS terminology
If you searched for "material safety data sheet" or "MSDS", check the document against the current EU requirements. The term used in REACH Article 31 and Annex II is safety data sheet. Neither an MSDS title nor an SDS title proves that the content meets those requirements.
RegAffairs AI answers when suppliers must provide a safety data sheet in Ireland, with citations to its stored official sources. For workplace use, keep the supplier's current SDS available alongside the risk assessment it informs.