HSE advises caution on use of carbon nanotubes
In a recently published information sheet, the HSE has called for a cautioned approach to the use of carbon nanotubes or CNTs. According to the HSE, the information sheet, Risk Management of Carbon Nanotubes, is in response to growing speculation on the toxic nature of the material.
CNTs, defined simply, are molecular-scale man-made forms of carbon. They can be further classified into two general groups: single-walled (SWCNTs) and multi-walled (MWCNTs). The CNTs do not always have a uniform chemical composition. They could be either pure carbon, or consist of metals or any other substance to lend them desired properties.
The popularity of CNTs stems from the versatility of the material. They have been found to be stronger and lighter than steel, and their physical, chemical, and bioactive properties have attracted a large amount of study while lending them many commercial prospects.
The scientific and regulatory community has often speculated on the similarities between asbestos and CNTs. These comparisons started as some CNTs were found to have a shape similar to asbestos fibres and an ability to survive in the lungs of laboratory animals for a long time.
Any company that is involved in work where employees could potentially be exposed to hazardous materials must make themselves fully aware of the legal implications and training available to avoid the wrath of the HSE and the courts. Protect your company with accredited health and safety courses such as the nebosh distance learning course offered by Workplace Law Training.
The HSE advisory has referred to a Nature Nanotechnology paper saying that certain CNTs might imitate asbestos fibres; however, a footnote by the HSE has remarked that the study has not yet proved that CNTs cause ailments similar to those caused by asbestos, but concern over their use is an aspect that demands further research.
The HSE suggests a cautious approach to the risk management of all CNTs, though recent findings are applicable to only a few forms of the material. The agency says that until reasonable and documented evidence establishes the effects of inhalation of CNTs, it expects them to be used in a controlled fashion. The HSE also recommends the practice of labelling the material as a substance that needs further testing.
