Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 285-349-9 | CAS number: 85085-18-3
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
Description of key information
This material is an inorganic fine, white, odourless powder. The form in which it is placed on the market is as a micron sized powder
Key value for chemical safety assessment
- Physical state at 20°C and 1013 hPa:
- solid
Additional information
This substance is a synthetic inorganic clay, sold as a fine white powder. It has a layer structure consistent with naturally occurring clay minerals but when dispersed in water forms disc-shaped platelets. The primary particle size is very small and therefore when dispersed into water results in clear and colourless dispersions, invisible to the naked eye. An individual disc of this substance in aqueous dispersion has dimensions of around 1nm thick and 4 - 10000nm wide but the charge on the edge and face of the platelet encourage the discs to form a "house of cards" type structure using face/edge attraction resulting in the formation of a gel structure at sufficient concentration (usually around 2% or more in tap water).The material as sold is not in nano form but at a PSD in the micron range
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
