The SEA Regulation, aligned with EU CLP and UN GHS, governs the hazard classification of substances and mixtures. Correct classification is the foundation of many other obligations.
A practical approach: fully assess available physico-chemical, health and environmental hazard data; apply the calculation method and bridging rules for mixtures; assign the correct pictograms, signal word and H/P statements; and keep classification consistent across the SDS, UFI/PCN and KKDIK dossier.
Incorrect classification leads to wrong labels, faulty SDSs and inspection risk. ONAY Mühendislik provides SEA/CLP classification and labelling services.
Related pages
Contact ONAY Mühendislik for KKDIK and REACH compliance support.
Yönetmeliğin resmî tam metni: KKDİK Yönetmeliği — Resmî Gazete.
Classification starts with the mixture
SEA classification is built from the composition and the hazardous properties of the mixture, not from the label of a similar product. Every pictogram, signal word, hazard statement and precautionary statement on the label is derived from that classification, so an error at this step propagates through the whole document set.
Calculation versus bridging
For most health hazards the concentration limits of the classified ingredients drive the outcome. Where a tested mixture is close enough, bridging principles can be applied instead of new testing. Both routes must be documented: inspectors ask how the classification was reached, not just what it is.
Keep the label and the safety data sheet aligned
The classification in the safety data sheet, the pictograms on the label and the data in the registration must all agree. Generating them from a single source and reviewing them together once a year removes the most frequent inspection finding in this area.
Packaging follows classification too
Certain hazard classes require child-resistant fastenings and a tactile warning, and packaging that resembles food is not permitted. These requirements come from the same classification decision, so packaging design should be checked at the same time as the label text.
Review once a year
Ingredient classifications change over time. An annual comparison of the label, the safety data sheet and the registration catches those changes before an inspector does, and the correction is usually a reprint rather than a recall.
CLP Classification and the Label That Follows It
A CLP classification decision is never the end point; every label element is derived from it. Pictograms, the signal word, hazard statements and precautionary statements all follow directly from the classes and categories assigned. When a CLP classification changes, the label artwork and the safety data sheet must be revised together, and remaining stock needs a transition plan.