a nonflammable liquid used as a solvent and paint remover and refrigerant
- Dichloromethane (DCM)
- Dichloromethane (methylene chloride)
- Dichloromethane: not more than 10 mg/kg
- Dichloromethane: Not more than 10 mg/kg
- The extract is purified with dichloromethane, by ion-exchange chromatography and then again with dichloromethane.
- Add 100 ml dichloromethane (3.1) to the funnel and shake for one minute.
- Run off the lower (dichloromethane) layer into a 500 ml round bottomed flask.
- Add 300 ml of hydrochloric acid solution (3.5) and 130 ml of dichloromethane (3.1).
- amending Council Directive 76/769/EEC as regards restrictions on the marketing and use of dichloromethane
- Evaporate the dichloromethane extract down to dryness on the rotary evaporator (4.2) operating under reduced pressure at 40 oC.
- Paint strippers containing dichloromethane in a concentration equal to or greater than 0,1 % by weight shall not be:
- Only the following solvents may be used in the extraction: ethylacetate, acetone, carbon dioxide, dichloromethane, n-butanol, methanol, ethanol, hexane.
- The triacetate or polylactide fibres are dissolved out from a known dry mass of the mixture, with dichloromethane.