SDS Section 1: Identification

The section that ties a document to a container

A safety data sheet is only worth reading if you can show it belongs to the thing in front of you. That proof is section 1 — which is why identification comes before classification. Someone has to establish that this sheet describes this drum before anyone acts on the statement that the contents are corrosive.

All three texts build the section from the same five parts: an identifier that matches the label, the other names the product goes by, what it is and is not for, who supplies it, and a number that answers in an emergency. They part company on how much is prescribed. OSHA’s Appendix D prints five lettered items and stops; REACH Annex II runs to four subsections with a dozen obligations packed inside the first one, several introduced by Regulation (EU) 2020/878 and still absent from sheets not revised since.

1.1 — the identifier, and everything the EU bolted onto it

The name is not the sheet’s to choose

Annex II does not define the product identifier. It routes it: to Article 18(2) of the CLP Regulation for a substance, to Article 18(3)(a) for a mixture. Then it adds the test that matters operationally — the identifier must be as provided on the label, in the official language(s) of the Member State where the product is placed on the market, unless that Member State provides otherwise. The UN text is blunter still: GHS Annex 4 A4.3.1.1 says the identity should be exactly as found on the label, and OSHA’s item (a) says the same in three words — “Product identifier used on the label.”

So the first line of section 1 is a copy, not a marketing name. Where a commercial name has drifted from the label — a rebrand, a regional variant, a reformulation that kept the old code — the sheet has quietly stopped being the sheet for that container.

Registration numbers, and a derogation with a clock attached

For substances subject to registration, subsection 1.1 requires the identifier to be consistent with the registration and the registration number under Article 20(3) of REACH to be indicated as well.

Then comes a provision most readers skim as an exemption. A distributor or downstream user may omit the part of that number identifying the individual registrant of a joint submission — but only against the two conditions printed as (a) and (b), the sharper of which is a seven-day deadline for putting the full number in front of the enforcement authority. A supplier who cannot meet that clock was never inside the derogation, and the shortened number on his sheet is not an abbreviation but an incomplete registration number.

Forms, nanoforms, and one sheet covering several products

Two further allowances in 1.1 are read as conveniences and are in fact conditions. One sheet may cover several substances or mixtures — only where it fulfils the Annex for each of them, the UN text adding that all names and variants be listed or the range clearly delineated. One sheet may cover different forms of a substance — only where it makes clear which information belongs to which form.

And then the sentence a great many sheets still do not carry: if the safety data sheet pertains to one or more nanoforms, or to substances that include nanoforms, this shall be indicated by using the word “nanoform”. The obligation is unusually literal — particle size data in section 9 does not discharge it. The word itself has to be in this subsection.

The UFI, and why it belongs here rather than anywhere else

The unique formula identifier is created under section 5 of Part A of Annex VIII to CLP: a unique alphanumeric code that unambiguously links a mixture to the composition information its supplier submitted for emergency health response. Annex VIII normally requires it on the label, preceded by the acronym “UFI” in capital letters, clearly visible, legible and indelibly marked.

By derogation, for hazardous mixtures for industrial use and for mixtures which are not packaged, it may instead be indicated in the safety data sheet — and Annex II then requires it in subsection 1.1, not in section 15, not in section 16, not in a footer. For an industrial-use mixture, section 1 may be the only place the UFI exists at all, so putting it elsewhere does not misfile it, it hides it.

1.2 — what it is for, and what it is not for

Subsection 1.2 asks two things, and most sheets answer only the first.

The first is at least a brief description of the identified uses relevant to the recipient. Annex II’s own examples set the register expected — floor cleaning, industrial use in polymer production, professional use in cleaning agents. “Industrial use” on its own is not a description of a use; it is a market segment. The UN text goes further still and asks what the product actually does, its examples being flame retardant and anti-oxidant.

The second is the uses the supplier advises against, and the reasons why. The list need not be exhaustive, but where it applies the reason is part of the obligation, not a courtesy: a bare prohibition tells a downstream user nothing about whether their own application falls inside it.

Where a chemical safety report is required, 1.2 becomes a consistency test — it must agree with the identified uses in that report and with the exposure scenarios annexed to the sheet. That is the hinge between section 1 and the technical half of the document.

1.3 and 1.4 — who answers, and on which telephone

The supplier is a role, not a company type

Annex II names five possibilities — manufacturer, importer, only representative, downstream user or distributor — and requires whichever one supplies the sheet to be identified, with a full address and telephone number, as well as an e-mail address for a competent person responsible for the safety data sheet. That last requirement has no US and no UN counterpart, and it is what makes an EU sheet auditable: a named function is accountable for the contents.

One more provision under 1.3 is worth noticing for what it does not require: where an only representative has been appointed, details of the non-Union manufacturer or formulator may be provided. Permitted, not required — which is why the actual maker of an imported substance is so often invisible on an EU sheet.

The US text is narrower. Appendix D item (d) asks for the name, U.S. address and U.S. telephone number of the chemical manufacturer, importer or other responsible party. A sheet arriving in a US workplace carrying only a European head office does not satisfy it, however complete that address is.

The emergency number

Both texts require references to emergency information services. The EU adds a default the US does not have: where an official advisory body exists in the Member State where the product is placed on the market — this may be the body responsible for receiving health-related information under Article 45 of CLP — its number shall be given, and can suffice.

Both then attach the same honesty condition, and it is the one most routinely broken: if availability is limited for any reason, such as hours of operation, or if there are limits on the types of information provided, that must be clearly stated. An unqualified switchboard number implies cover the supplier may not actually provide, at the one moment the reader has no way to check.

How section 1 connects to the rest of the sheet

• Section 1 carries no hazard information whatsoever. Everything about danger is in section 2; a reader who stops at section 1 has read the cover, not the sheet.
• Section 1 names the product, section 3 names what is inside it. On a single-substance sheet the two converge, and a disagreement between them is the fastest way to spot a document assembled from two sources.
• The identified uses in 1.2 are what the engineering controls in section 8 must be adequate for — Annex II ties subsection 8.2.1 back to 1.2 by name.
• The emergency number in 1.4 supplements, and does not replace, section 4. Where the first-aid measures are thin, that number is doing work it was never meant to do alone.
• Whether a chemical safety assessment was carried out is recorded in section 15 — and if one was, 1.2 has to match it.
• The revision date in section 16 tells you whether the section 1 you are reading is current. An emergency number three revisions out of date is worse than none, because it will be dialled.

What a good section 1 looks like

Three tests, all answerable by reading:

1. Can you match it to the container without judgment? The identifier on the page is the identifier on the label, in the language of the market it was sold into. If you have to reason about whether these are the same product, they are not demonstrably the same product.
2. Does it say what the product is for, in words the recipient recognises? “Floor cleaning” is a use. “Industrial” is a segment. And where the supplier advises against a use, the reason is printed alongside.
3. Would the number in 1.4 answer, right now? A named service, with its hours and scope stated — and in the EU, the official advisory body of the Member State the product was placed on the market in, where one exists.