1. Like other chloroacetic acids and related halocarbons, chloroacetic acid is a hazardous alkylating agent.

2. Halocarbons are found in refrigerant and cooling systems, such as refrigerators, and air conditioners.

3. Only methyl chloride, which is one of the halocarbons, has a mainly natural source, and it is responsible for about 20% of the chlorine in the stratosphere; the remaining 80% comes from man-made sources.

4. Because long-term climate stability would be required for sustaining a human population, the use of especially powerful fluorine-bearing greenhouse gases, possibly including sulfur hexafluoride or halocarbons such as chlorofluorocarbons (or CFCs) and perfluorocarbons (or PFCs), has been suggested.