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Verabschiedete Gutachten und bisherige Konsultationen zu Zulassungsanträgen

Verabschiedete Gutachten und bisherige Konsultationen zu Zulassungsanträgen

 

This page provides further information on the applications for authorisation or review reports, which have undergone public consultation. The applications for authorisation are in the opinion development phase until the final opinions of the Committees for Risk Assessment and Socio-economic Analysis have been adopted and sent to the European Commission. The European Commission's decision-making process can be followed through the comitology register, where further information is published about the REACH Committee's past and upcoming meetings.

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Substance Details

Name
Dichromium tris(chromate)
EC Number
246-356-2
CAS Number
24613-89-6
Entry Nr in Annex XIV
28
Use name
Use of dichromium tris(chromate) for surface treatment of metals such as aluminium, steel, zinc, magnesium, titanium, alloys, composites, sealings of anodic films.
Broad information on use applied for (conditions of use and function)
Corrosion resistance is one of the major functionalities of chromates in surface treatment processes.

Key functionalities of dichromium tris(chromate) for the main treatment process (chemical conversion coating) as well as the post-treatment processes (sealing after anodising, chromate rinsing and passivation of metallic coatings) are:
- Corrosion resistance
- Adhesion promotion
- Layer thickness
- Chemical resistance
- Resistivity (electrical contact resistance)

Pre-treatments are not typically performed with dichromium tris(chromate), but with other Cr(VI)-compounds.

The main form of application is dipping or immersion of parts in a tank or through a series of tanks containing solutions in closed or open systems. Sometimes the solution containing hexavalent chromium is applied by brush or with a pen-stick, especially to small surfaces.

Concentrations of Cr(VI) in the surface coating may be below or above detection levels.

Annual tonnage used: 100 tonnes
Number of sites: >100

Requested review period: 12 years
Use applied for number in application for authorisation
2
Broad information on use applied for (Use descriptor system)
Sector of end use (SU): 0: other: aerospace and Aeronautics
Environmental release category (ERC): 6b
Process category (PROC): 1, 2, 4, 5, 7, 8a, 8b, 10, 13, 15, 21, 24
Product category (PC): 14
Technical Function: Corrosion inhibitors and anti-scaling agents
Summary table of RMMs and OCs (non confidential)
Section 9 and 10 of the CSR (non confidential)
Analysis of Alternatives (non confidential report)
Substitution Plan (non confidential summary)
Socio-Economic Analysis (non confidential report)
Joint Analysis of Alternatives and Socio-Economic Analysis (non confidential report)
Explanatory note
Additional information
ID
0045-02
Applicant(s)
Henkel AG & Co. KGaA
Henkel Global
Supply Chain B.V.
Application type
Initial
Status
Opinions adopted
Other consultations on the same/ similar use
0043-02;
0044-02;
Comments submitted to date
Download [ZIP]
Response to comments by applicant
Responses to RAC and SEAC requests by Applicant(s) (non confidential)
Compiled RAC and SEAC opinions
Minority positions
Adopted commission decision (OJ summary)

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