
| CES | European Silicones Centre |
| DU | Downstream User |
| EChA | European Chemical Agency |
| EU | European Union |
| M/I | Manufacturer and/or Importer (into the European Union) |
| QSAR | Quantitative Structure Activity Relationship |
| REACH | Registration, Evaluation, Authorisation and Restriction of Chemicals |
| RIP | REACH Implementation Process - a series of guidance documents that can be downloaded from EChA's website |
| SIEF | Substance Information Exchange Forum |
| Silane | Any of a series of inorganic compounds of silicon and hydrogen or chlorine with covalent bonds and the general chemical formula SinX(2n + 2). |
| Silicone | Any of a group of semi-inorganic polymers based on the structural unit R2SiO, where R is an organic group |
| Siloxane | Any of a class of organic or inorganic chemical compounds of silicon, oxygen, and usually carbon and hydrogen, based on the structural unit R2SiO, where R is an alkyl group, usually methyl. |