Archives

February 11, 2022

EUON Publishes Nanopinion on Why Graphene Is Not the Same as Carbon Nanotubes

On January 18, 2022, the European Union (EU) Observatory for Nanomaterials (EUON) published a Nanopinion entitled “What does ‘Graphene’ really look like and why is it not ‘carbon nanotubes’” by Dr. Alberto Bianco, Dr. Maurizio Prato, and Dr. Kostas Kostarelos, of the Graphene Flagship, an EU research initiative, about graphene and why it is not the same as carbon nanotubes. The article states that in particular, the authors wish to emphasize “that ‘graphene’ as a...
August 4, 2021

ACGIH® Will Not Proceed with TLV® for Carbon Nanotubes in 2022

As reported in our January 4, 2021, blog item, the American Conference of Governmental Industrial Hygienists (ACGIH®) Threshold Limit Values for Chemical Substances (TLV®-CS) Committee included carbon nanotubes on its 2021 list of chemical substances and other issues under study. Being placed on the under study list indicated that the TLV®-CS Committee had selected carbon nanotubes for development of a threshold limit value (TLV®). ACGIH® has now released its two-tier under...
January 5, 2021

NIOSH Science Blog Reports on Recent Article Concerning Carbon Nanotubes and Nanofibers Used or Produced in U.S. Facilities

On January 5, 2021, the National Institute for Occupational Safety and Health (NIOSH) posted a Science Blog item entitled “Understanding the Broad Class of Carbon Nanotubes and Nanofibers (CNT/F) Used or Produced in U.S. Facilities.”  The item summarizes a recently published article in the journal Particle and Fibre Toxicology, “Physicochemical characterization and genotoxicity of the broad class of carbon nanotubes and nanofibers used or produced in U.S. facilities” that...
January 4, 2021

ACGIH® TLV®-CS Committee Seeks Information on Carbon Nanotubes

The American Conference of Governmental Industrial Hygienists (ACGIH®) Threshold Limit Values for Chemical Substances (TLV®-CS) Committee has included carbon nanotubes on its 2021 list of chemical substances and other issues under study.  Being placed on the under study list indicates that the TLV®-CS Committee has selected carbon nanotubes for development of a threshold limit value (TLV®).  ACGIH® describes TLVs® as health-based values representing the...
September 24, 2020

EPA Publishes Final SNUR for Carbon Nanotubes (Generic) (PMN P-15-54)

On September 17, 2020, the U.S. Environmental Protection Agency (EPA) published final significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for chemical substances that were the subject of premanufacture notices (PMN) and are subject to Orders issued by EPA pursuant to TSCA.  85 Fed. Reg. 57968.  The SNURs require persons who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that...
July 28, 2020

ACGIH® Will Not Proceed with TLV® for Carbon Nanotubes in 2021

As reported in our February 5, 2020, blog item, the American Conference of Governmental Industrial Hygienists (ACGIH®) Threshold Limit Values for Chemical Substances (TLV®-CS) Committee included carbon nanotubes on its 2020 list of chemical substances and other issues under study.  Being placed on the under study list indicated that the TLV®-CS Committee had selected carbon nanotubes for development of a threshold limit value (TLV®).  ACGIH® has now released...
November 27, 2019

ChemSec Adds Carbon Nanotubes to SIN List

The International Chemical Secretariat (ChemSec) announced on November 14, 2019, that it added more chemicals, including carbon nanotubes, to its Substitute It Now! (SIN) List.  ChemSec describes carbon nanotubes as “one of the more well-studied nanomaterials” and notes that “they are used to make durable, lightweight materials, for electrical conductivity, as a super black pigment and for water purification, among other uses.”  Dr. Anna Lennquist, Project Manager for...
October 30, 2008

EPA Will Publish Notice Regarding TSCA Inventory Status of Carbon Nanotubes

According to the Office of the Federal Register, tomorrow the U.S. Environmental Protection Agency (EPA) will publish a notice regarding the Toxic Substances Control Act (TSCA) requirements potentially applicable to carbon nanotubes (CNT). EPA states that it “generally considers CNTs to be chemical substances distinct from graphite or other allotropes of carbon listed on the TSCA Inventory.” As a result, many CNTs may therefore be new chemicals under TSCA Section 5. Manufacturers or...
September 5, 2008

Friends of the Earth Australia Calls for an Immediate Moratorium on the Use of Carbon Nanotubes

In its latest Background Paper, entitled Mounting Evidence That Carbon Nanotubes May Be the New Asbestos, Friends of the Earth Australia (FOEA) is calling “for an immediate moratorium on the commercial use of carbon nanotubes and the sale of products that incorporate nanotubes until research can demonstrate whether or not there is any safe level of exposure to them.”   FOEA also is calling for new nanotechnology-specific regulation to protect human health and the...
June 13, 2008

IARC Announces Carbon Nanotubes Nominated for Review

The International Agency for Research on Cancer (IARC) recently solicited nominations for substances for review in future IARC Monographs, which identify environmental factors that can increase the risk of human cancer. IARC states that it will select substances for review based on: (a) evidence of human exposure; and (b) evidence or suspicion of carcinogenicity. The 51 substances nominated include carbon nanotubes, which received three nominations: Name...