He eventually produced a safer chemical based on khellin, sodium cromoglycate.

The Federal Drug Administration has previously declared the chemical both safe and effective.

Can you tell me how often the treatment is required, and what is the safest chemical to use?

These problems usually occur during the hot summer months, and are partially brought under control by the use of safe chemicals.

Although "organic" (produced by nature) rotenone is no longer considered an environmentally safe chemical.

Although the manufacturer of Primatene promises to come up with a version propelled by a safer chemical, the company has not yet done so.

It should also require companies to switch to safer chemicals when the cost is not prohibitive, a key safety measure that the industry has resisted.

Identifying safer chemicals, including life cycle considerations, through Alternatives Assessment.

They see it as a trend; they're using safer chemicals and less chemicals.

This is done, for example, by saying that chemicals policy must stimulate technical innovation and the development of safer chemicals.