Most of the toxicological data on gas exposure is based on the 8-hour work period of the terrestrial worker and is therefore unsuitable for spacecraft work.

Because of the high reactivity of the metal, toxicological data are available only for compounds.

The original edition, known as the Toxic Substances List was published on June 28, 1971, and included toxicological data for approximately 5,000 chemicals.

However the doubtful purity of this study increased because of uncertainty concerning the toxicological data.

As such it is presently forbidden for food use in general, because toxicological data has shown it is harmful.

Within each chapter the chemical and physical properties and applications of a wide range of surfactants are succinctly and lucidly described (toxicological and environmental data is left to an appendix).

It is now delisted in both Europe and USA and is forbidden if used in foods and drinks, as toxicological data has shown it is harmful.

No human health effects have been discovered, but E.P.A. officials' concerns were raised by recent toxicological data in animals.

The second part provides succinct summaries of the toxicological data examined and factors considered when evaluating selected substances and allocating an acceptable daily intake.

The E.P.A. also found DuPont in violation for failing to provide all of the toxicological data it had gathered on the chemical after a 1997 request from the agency.