As some of this volume may be for chemical intermediate use, or for re-export, it is difficult to read too much into these figures, except to note that the raw data suggest a stabilisation rather than sharp reduction in use. Data in the above graph reflects virgin solvent sales by ECSA members and excludes imports and recycled material. It is strongly recommended that users stay within legislative or manufacturers' guidelines on workplace exposure. Over-exposure, as with many other substances, can lead to unconsciousness and even death. Correct ventilation is vital.
Chlorinated solvents are unlikely to accumulate in the environment.
As discussed above, chlorinated solvents have a relatively short atmospheric lifetime. Spillages to water or soil are most likely to re-evaporate to the atmosphere, where they will break down. Furthermore, methylene chloride is completely biodegradable under both aerobic and anaerobic conditions. Perchloroethylene and trichloroethylene display much slower biodegradation especially under anaerobic conditions, and for this reason, ECSA encourages spillage containment systems in storage and use areas. Further, ECSA strongly discourages land filling of waste, even though this may be legal in some areas.