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Public Comments

As part of the regulatory process, federal and state agencies regularly request public input on proposed activities. The Nanotechnology Panel submits comments on relevant regulatory activities, which are publicly available through the federal government.

Nanotechnology Definitions

Many regulatory bodies around the world have separately developed definitions of “nanomaterial” to identify materials of potential interest, resulting in inconsistent definitions among regulatory organizations.

Mode of Action Useful Links

Risk Assessment Basics: Methods for Conducting MOA Analysis and Use of MOA in Risk Assessment Biologically Motivated ComputationalModeling Contribution to Risk Assessment Recent Developmentsin Frameworks to Consider Human Relevance of Hypothesized Modes of Actionfor Tumours in Animals The Vanishing Zero Revisi

What is Nanotechnology?

Nanotechnology is the science of extremely small structures that generally measure less than 100 nanometers (nm). One nanometer is one billionth of a meter, and there are more than 25 million nanometers in one inch. A sheet of paper is about 100,000 nm thick.

Risk Assessment Basics

Nearly 500 years ago, Paracelsus coined the phrase the dose makes the poison and even today the relationship between dose and health effects remains a fundamental concept of toxicology All chemical substances will exhibit an adverse effect if given a large enough dose Conversely, if the dose is sufficiently low

About ACC

ACC represents a diverse set of companies engaged in the business of chemistry.

ARASP Comments

Media Center: ARASP Comments on TCEQ 2015 Position Paper Approaches to Derive Odor Based Values and Proposed Odor ESL List July 2015 ARASP Comments on the 2015 Revision of the TCEQ Guidelines to Develop Toxicity Factors July 2015 ARASP Adds to Industry Coalition Comments on EPA s Work Plan Chemical Problem Fo


Here find a list of helpful resources from government and other organizations about nanotechnology and worker safety.


The NANO Timeline. A big history of the very small.

Mode of Action and Thresholds

Risk Assessment Basics: Mode of action MOA information describes key events and processes that would, in general, explain the overall process of development of a toxic effect MOA is also relevant in considering susceptibility factors within populations, and in considering the cumulative effects of exposure to

Media Center

The primary purpose of the Media Center is to keep interested parties apprised of developments in the regulatory and scientific world of risk assessment A page of useful links to risk assessment resources can be found in this section, as well as ARASP comments and risk assessment news releases Contact Information


Nanotechnology could bring about the next wave of innovation in science and engineering—the possibilities are endless. It has the potential to transform aerospace, agriculture, information technology, national defense, transportation and many other sectors.

PU 115: Spray Polyurethane Foam

This webinar course will discuss general background about spray polyurethane foam (SPF), unique applications, benefits of SPF, where SPF can be installed, evaluation reports, code changes and distinctive case studies where SPF was installed.