Published: 16 February, 2017
As the demand for our various scientific services has increased over the years, we’ve increased our resources and we now have a team of eight highly experienced chemists working at The REACH Centre, many with backgrounds in the pharmaceutical and speciality chemical sectors. Last year, we successfully characterised over 100 different substances for REACH!
A significant proportion of the substances we are asked to characterise are highly complex and we’ve developed a successful and robust approach to tackling these cases. Examples include more than 40 substances from the oil sector (oils and waxes, some containing additives), 15 plant-derived essential oils, over 50 colorants (organic dyes and pigments), 30 complex inorganic substances (including a number of minerals) and a varied range of over 30 ionic and non-ionic surfactants and fatty acid esters.
At the other end of the complexity spectrum are the elemental substances and we’ve characterised lots of these too including magnesium, copper, cobalt, selenium, neodymium, silver and gold. Usually, the process is relatively straightforward but there are challenges to contend with, even here. Carbon is a good example. Some of the more interesting cases The REACH Centre has encountered have involved the different forms of this element. We’ve characterised many of them now, including carbon black, synthetic graphite and diamond and we’ve also looked at some of the more highly engineered forms including nanomaterials and surface-modified species. The difference between certain forms of carbon can be very subtle and the approach to characterising them needs careful consideration. Many forms of carbon have now been fully registered, including carbon black, activated carbon, diamond, carbon nanotubes, graphite and graphene. If one of these is on your list for 2018, let us help you with substance identity and sameness.
In some cases, the physical morphology of a substance may be an important characteristic or even a key substance identifier. Examples include cuboidal zeolite, and single- and multi-walled carbon nanotubes. The characterisation of these substances requires additional tests such as particle size analysis and microscopy as well the more usual chemical tests.
If you intend to make a registration in the run up to the 2018 deadline, whatever your substance, we can help you fulfill your regulatory obligations.