EuPCS categories: how to choose the right product category for your PCN

Every poison centre notification must state what the mixture is for — and not in free text. Annex VIII to CLP requires the intended use to be described according to a harmonised categorisation system: the EuPCS, the European Product Categorisation System. In the submission it is a single dropdown field. It is also the field companies most often guess at, because the list runs to roughly 250 categories and the selection rules are documented in a manual most submitters never open.

This guide covers the rules that actually decide the choice — one category, main intended use, lowest level — and then walks three real product types through the tree, including the traps where the obvious answer is wrong.

What the EuPCS is

The EuPCS exists because poison centres need to know, at a glance, what kind of product an exposure involves — and because authorities want poisoning statistics that are comparable across the EU. “Drain cleaner” and “wood stain” mean the same thing in every member state only if everyone selects from the same list. Annex VIII Part A therefore requires the intended use of every notified mixture to be described in accordance with the harmonised product categorisation system, and the EuPCS is that system.

The current category list is version 4.0, and ECHA publishes both the list and a practical support manual. The category you choose feeds directly into how a poison centre interprets a call about your product, so it deserves the same care as a classification decision — it is part of the required PCN information, not packaging around it.

Two scope notes worth knowing. The system is built for mixtures classified for health or physical hazards — the ones Article 45 covers — but the same categories serve voluntary submissions too, for example detergents that are not classified as hazardous, or mixtures classified only for environmental hazards. And the list is not frozen: ECHA revises it, and requests for new or changed categories are channelled through industry associations, so a genuinely uncategorisable product line is an argument to raise with your sector body, not a dead end.

Exactly one category: the main-intended-use rule

Three selection rules do most of the work:

• One category per mixture.The submission carries exactly one main intended use. The portal enforces the field’s presence with validation rule BR534 (“Main intended use must be indicated”).
• Main intended use decides.Where a product plausibly fits several categories, ECHA’s manual is explicit: categorise according to the single main intended use, at the submitter’s discretion and best knowledge. Genuinely intended secondary uses may be recorded as optional extra data — but they never replace the main category, and a biocidal or plant-protection category can never appear only as a secondary use (rule BR589).
• Lowest level only. A category can be selected only where the tree stops branching. For some products that is the fifth level; for one case — mixtures for further formulation — the tree stops at the first level. Parent categories such as PC-CLN or PC-PNT are headings, not answers.

How the tree is organised

The five levels are easier to navigate once you see what each one separates:

• Level 1 — end use or not.“P — Products” covers mixtures placed on the market for an end use. “F — Mixtures for further formulation” covers mixtures sold only to be formulated into other mixtures in an industrial setting; F has no subcategories and is selected as-is.
• Level 2 — regulatory family. Within products, chemical products (codes starting PC-) are separated from biocidal and plant protection products (codes starting PP-).
• Level 3 — product group.The recognisable families: adhesives and sealants (PC-ADH), air care (PC-AIR), products for animals (PC-ANI), art materials (PC-ART), cleaning and maintenance (PC-CLN), colourants (PC-COL), construction products (PC-CON), detergents (PC-DET), e-liquids (PC-ELQ), fertilisers (PC-FER), fuels (PC-FUE), inks and toners (PC-INK), medical devices (PC-MED), paints and coatings (PC-PNT), pyrotechnics (PC-PYR), tattoo inks (PC-TAT), chemical/technical process products (PC-TEC), plus biocidal products (PP-BIO) and plant protection products (PP-PRD). A residual PC-UNC (“uncategorised”) exists for products no group fits.
• Levels 4 and 5 — the selectable detail. Numeric subcategories (PC-CLN-2, PC-CLN-10.4) or an -OTH residual per branch.

The fastest method in practice: decide P versus F, rule the PP branch in or out, pick the level-3 group, then read every subcategory description in that group — the descriptions carry exclusions that redirect you, and the exclusions are where wrong picks happen.

Worked example 1: an all-purpose cleaner

The product: a trigger-spray surface cleaner and degreaser for general household use, hazardous by classification, no disinfection claim.

1. Level 1: sold to end users for cleaning — an end use, so P, not F.
2. Level 2: no biocidal authorisation, no biocidal claim — chemical products (PC-).
3. Level 3: cleaning, care and maintenance — PC-CLN. (Not PC-DET: that group is specifically laundry and dishwashing detergents and their auxiliaries.)
4. Level 4: is it abrasive? Abrasive cleaners go to PC-CLN-1. Ours is not, so the fit is PC-CLN-2 — all-purpose (or multi-purpose) non-abrasive cleaners including degreasing agents.

Now the exclusions in PC-CLN-2’s own description: it excludes degreasers for kitchen areas, floor cleaning products and engine cleaners. Market the same formulation as a kitchen degreaser and the right category becomes the kitchen branch (PC-CLN-10.x); as a floor cleaner, PC-CLN-13. The specific category beats the general one whenever the marketed use matches it. And if the label claims “kills 99.9% of bacteria” under a Biocidal Products Regulation authorisation, the product leaves PC-CLN entirely — see the edge cases below.

Worked example 2: a decorative paint

The product: a solvent-borne interior wood varnish for walls and furniture, classified for flammability.

1. Level 1: end use — P.
2. Level 2: chemical products. The in-can preservative inside the paint does not make the paint a biocide: a product without a primary biocidal function that merely contains a preservative stays in the chemical branch.
3. Level 3: paints and coatings — PC-PNT. Two boundary checks from the group description: artists’ paints belong to art materials (PC-ART), and products for priming or protecting construction materials belong to construction products (PC-CON).
4. Level 4: decorative architectural use — PC-PNT-2, paints/coatings – decorative, whose description explicitly includes varnishes and wood stains, and tinters for point-of-sale deco-mixing (tinters count as end-use products here, not mixtures for further formulation).

The trap in this group is packaging format: if the same coating is supplied in a ready-to-use aerosol canister, PC-PNT-1 (aerosol paints and coatings) takes precedence regardless of any other intended use in PC-PNT. A decorative aerosol lacquer is PC-PNT-1, not PC-PNT-2 — one of the few places where the physical format, not the purpose, decides the category.

Worked example 3: a construction adhesive

The product: a one-component flooring adhesive for parquet and carpet, sold to professional installers.

1. Level 1: end use — P. (Professional versus consumer matters for the use-type field of the PCN, not for the EuPCS branch.)
2. Level 2: chemical products.
3. Level 3: adhesives and sealants — PC-ADH.
4. Level 4: building and construction works — PC-ADH-2, which names adhesives for wall coverings and flooring, including carpet and parquet, plus civil-engineering works.

Three redirects to check before settling: cement-based adhesives are excluded from PC-ADH altogether and belong with mortars under construction products (PC-CON); a two-component adhesive whose parts are mixed for immediate use goes to PC-ADH-8 (multi-component adhesives and sealants), which takes the case away from PC-ADH-2; and a general-purpose wood glue aimed at households belongs in PC-ADH-1 (household, office or school use), not the construction branch.

What happens when you pick wrong

Here is the uncomfortable part: the portal validation rules cannot tell a wrong category from a right one. BR534 checks that a main intended use is present; BR589 blocks biocide categories from hiding in secondary uses; nothing checks that your drain cleaner is not filed as a wood stain. A miscategorised dossier passes validation and comes back to you later, through slower channels:

• Appointed-body follow-up. Annex VIII gives appointed bodies the right to make a reasoned request for further information. A category that contradicts the composition, the label or the toxicological profile is exactly the inconsistency that triggers one.
• Inspection findings.Enforcement inspectors compare the notified record against the marketed product; a label that says “flooring adhesive” over a notification that says “all-purpose glue” invites questions about what else is wrong.
• Degraded emergency response. The category frames how a poison centre reads the record in the first seconds of a call — the failure mode with no paper trail and the highest stakes.

The fix is a submission update: a revised version of the dossier with the corrected category, submitted as an update rather than a new initial notification. Because the UFI is bound to the composition and not to the category, correcting the category needs no new UFI and no label change — see how to update a PCN.

Edge cases

• Multi-purpose products.One main intended use, chosen at your discretion and best knowledge; other genuine uses go into the optional secondary-uses field. ECHA’s manual points submitters in doubt to their industry association, which is realistic advice — sector associations maintain category mappings for common product types.
• Mixtures sold to formulators. If the mixture is placed on the market only to be formulated into other mixtures in an industrial setting, the category is F — selected at level 1, no subcategories. Two boundaries: industrial end use (a mixture consumed in producing an article) is not F but a P-branch category, and mixing at point of sale or during end use does not count as formulation. Your customer, meanwhile, declares your product as a mixture in mixture in their own notification.
• Biocide overlap. Biocidal products carry their own branch: PP-BIO subcategories mirror the product types of the Biocidal Products Regulation (disinfectants, preservatives, rodenticides and so on). The rule: if the product is subject to BPR (or PPPR) authorisation, the PP category mustbe the main intended use — a BPR-authorised kitchen disinfectant is PP-BIO-2 with “cleaners for kitchen areas” at most a secondary use. A treated article with no primary biocidal function, like preserved paint, stays in the chemical branch.
• Nothing fits. Use the -OTH residual of the closest branch, or PC-UNC at the third level as the last resort — ECHA intends both as exceptional, after checking the specific categories in all plausible groups, and the format allows no free-text category.

Where the official list lives

Two documents are canonical, both free from ECHA. The EuPCS category list v4.0 is the list itself; the EuPCS support manual (“EuPCS: a practical guide”) adds the selection rules, the exclusion notes and the special considerations this article draws on. Both hang off the EuPCS page of ECHA’s Poison Centres site, and the same list is what the Submission portal and IUCLID present as pick-list values when you prepare a submission.