How should a chemicals website show REACH and KKDİK?
On a chemical manufacturer’s website, REACH or KKDİK is shown not as a certificate but as a registration: with the substance name and registration number, together with the safety data sheet in the language of the market. ECHA issues the registration number after a completeness check and does not assess the quality of the data; so phrases like “REACH certificate” or “REACH approved” should not be used on the site.
Chemicals were the second-largest sector in 2025, carrying about 13.5% of sector-based exports registered with the Turkish Exporters Assembly (TİM), at 31.93 billion dollars. This guide is the detail of the chemicals row of the certificate map by sector; how a certificate generally belongs on a website is covered in the certified manufacturer website guide.
Which document does a chemicals buyer ask for?
In chemicals, what a buyer asks for is usually not a certificate but a registration: whether the substance is registered under REACH in the EU and under KKDİK, its Turkish counterpart, in Turkey, and the safety data sheet. Under REACH, the European Chemicals Agency (ECHA) issues a registration number after a completeness check of the registration; under Article 20 of the regulation, this check does not assess the quality of the data. A manufacturer outside the EU can appoint one only representative per substance and register through them (Art. 8).
The safety data sheet is the side of that registration that reaches the buyer: it has sixteen sections, is prepared in the language of the market where the substance is sold and, after registration, contains the registration number (Art. 31(9)). A buyer’s technical team asks for this sheet first, the purchasing team for the registration number.
How is the registration shown on the website?
As a registration: on the substance or product page, the substance name, the registration number and a downloadable version of the safety data sheet in the language of every market you sell to. If an only representative was appointed, their name sits on the same line; the buyer sees through whom the registration was made. The table below collects where, and under what condition, this information belongs on the site.
Keeping each language version of the safety data sheet as a separate file on the site keeps a buyer from downloading the wrong version: the file name carries the language and revision date, and the page says which version is current. When the sheet is updated, the old version comes off the site; two versions for the same substance side by side force the buyer to ask which one is valid. The same rule applies when the only representative changes: the page shows, as of today, through whom the registration was made.
| Item | On the website | Basis |
|---|---|---|
| Substance name and REACH registration number | Yes, on the substance or product page | REACH Art. 20 |
| Safety data sheet | Yes, in the language of the market; the registration number is inside the sheet | REACH Art. 31(9) |
| Name of the only representative (non-EU manufacturer) | If appointed, next to the registration number | REACH Art. 8 |
| “REACH certificate”, “REACH approved” | No; ECHA does not assess the quality of the data | REACH Art. 20 · ECHA guidance |
| KKDİK registration number (Turkish market) | Once registration is complete, with its number | KKDİK |
Where the registration belongs on a chemicals website
- 01Substance name and REACH registration number
- 02Safety data sheet, in the market’s language
- 03Name of the only representative
- 04The phrase “REACH certificate”
- 05KKDİK registration number
What should a chemicals website not say?
The most common mistake is presenting a registration as a certificate or an approval. ECHA’s registration guidance and the EU’s REACH questions page describe no “certificate”; the registration number says the substance is registered, not that the data are correct or the product is safe. Describing a registered substance correctly is not hard: the substance name, the registration number and a current safety data sheet are enough. What to avoid on the site:
- Phrases like “REACH certificate”, “REACH-approved product” or “REACH-certified company”.
- Describing a substance without a registration number as registered.
- Publishing the safety data sheet in only one language while selling to other markets.
- Calling the cosmetic notification of a cosmetic raw material or finished cosmetic product an “approval”: according to the Commission’s guidance, a successful notification does not mean the product meets all requirements.
The last item is the distinction itself: cosmetic products reach the market not through REACH registration but through the Cosmetics Regulation’s notification and responsible-person rules. The details are in the cosmetics manufacturer website guide.
When are the KKDİK deadlines?
Under KKDİK, registration is completed in three stages. The first deadline is December 31, 2026: for substances at 1,000 tonnes or more per year, at 100 tonnes or more for substances classified in category 1 for acute or chronic aquatic toxicity, and at 1 tonne or more for category 1 carcinogens, mutagens or reproductive toxicants. The second deadline is December 31, 2028 (100 tonnes or more per year), the third December 31, 2030 (1 tonne or more per year). On the site these dates appear not as a promise but as the status of the registration: once registration is complete, the number is written on the substance page.
How does a buyer verify the registration?
With the registration number and the safety data sheet. Because the number appears inside the sheet, the buyer reads the two side by side; the site’s job is to keep both on the same page, in their current versions. It is worth remembering that the number shows the substance is registered, not that the quality of the data is approved: the buyer’s own assessment is made on the content of the sheet. How a certificate is verified in four steps is in the is a company’s ISO certificate real guide; that path applies to your management system certificates. Writing the sheet’s revision date on the page as well makes it easy for a buyer to compare an older version in hand with the one on the site.
How are the product page and the machine layer built?
The product page carries the name of the substance or mixture, the registration number and the language versions of the safety data sheet; technical data sit in a table, with units. In the machine layer, the registration is not marked up as a certificate: schema.org’s Certification type describes a certification, and a REACH registration does not fit that definition; this is our reading. The visible text on the page and the sheet itself are enough. The company’s management system certificates such as ISO 9001 or ISO 14001 stay in their own place in the certificate record and the markup; keeping the two apart stops both buyer and machine from mistaking the registration for a certificate.
A short checklist for a chemicals website
- Is the registration number written on every substance page?
- Is the safety data sheet current and in the language of every market you sell to?
- If an only representative was appointed, is their name next to the registration?
- Is any sentence with “REACH certificate” or “REACH approved” left on the site?
- Is the status of the KKDİK registration for the Turkish market reflected on the substance page?
- If there are cosmetic products, is the cosmetic notification kept from being described as an “approval”?
- Are management system certificates in the certificate record, not mixed with registrations?
The information here is not legal advice; confirm which rule applies to you from official sources and from your certification body’s current requirements.
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FREQUENTLY ASKED QUESTIONS
Is there such a thing as a REACH certificate?
ECHA’s registration guidance and the EU’s REACH questions page describe no certificate. Under REACH, ECHA issues a registration number; it is issued after a completeness check, without assessing the quality of the data.
In what language should the safety data sheet be?
In the language of the market where the substance is sold. The sheet has sixteen sections and, after registration, contains the registration number.
When is the first KKDİK deadline?
December 31, 2026: for substances at 1,000 tonnes or more per year and for lower tonnages in certain hazard classes. The following deadlines are December 31, 2028 and December 31, 2030.