ADCR Consortium
ADCR and Chromates Reauthorisation
ADCR Consortium
The ADCR Consortium, created in 2019, has submitted a suite of 21 Authorisation dossiers, for 11 uses of five substances (see Tranche 1 table below).
Since end of 2024, and early 2025, ADCR authorisation holders have received 12-year authorisations in both EU and the UK. For more information on granted Authorisations, see Granted ADCR Authorisations.
The first submission of applications, referred to as Tranche 1, was submitted in 2023 under both EU REACH and UK REACH, and a second submission, Tranche 2, was submitted in May and June 2024 (EU and UK respectively).
The first three UK decisions for Tranche 2 were adopted by Defra in January 2026 and the final decisions are expected in March 2026.
Both Tranche 1 and Tranche 2 submissions are found in the ADCR Communication ‘Summary of ADCR applications submitted in EU and GB and decisions status’ where the latest version is provided in Granted ADCR Authorisations.
Tranche 1 use/substances combination table
| Uses of Cr(VI) substances for (re)authorisation | Chromium trioxide | Sodium dichromate | Potassium dichromate | Sodium chromate | Dichromium tris(chromate) |
|---|---|---|---|---|---|
| Anodising | X | ||||
| Conversion coating | X | X | X | X | |
| Electroplating | X | ||||
| Passivation of (non-Al) metallic coatings | X | X | X | ||
| Passivation of stainless steel | X | X | |||
| Anodise sealing | X | X | X | X | |
| Slurry coatings | X | ||||
| Chromate rinsing after phosphating | X | ||||
| Inorganic finish stripping | X | X | |||
| Pre-treatments | X | X | |||
| Formulation | X | X | X | X |
Tranche 2 Submissions
The table below shows the Tranche 2 submissions use/substance combinations.
