Skip to Main Navigation
Skip to Page Content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Nomination Summary for Nanoscale Cellulose (N21304)

Nominated Substances: Microcrystalline cellulose

Nomination Date: 08/04/2010

Nominator: NIEHS

Rationale: Anticipated increase in production due to natural abundance and functional properties that make it useful for a wide range of industrial applications; suspicion of toxicity based on known hazard of other respirable crystalline particles, high aspect ratio and large surface area of nanoscale form; very limited toxicological data available for nanoscale cellulose particularly via inhalation, the exposure route of greatest concern in industrial settings.

NTP Principles: not specified

More Detailed Information