Sɛnea ɛbɛyɛ a wɔbɛtew nsu fĩ no so na wɔama nsakrae dodow a ɛba wɔ nneɛma a wɔyɛ mu no akɔ soro, ɔman no mu nyansahu mu nhwehwɛmu asoɛe ahorow ne nnwuma a wɔyɛ nneɛma de di dwuma wɔ ɔman no mu mfiridwuma mu de hwɛ, wɔatu mpɔn wɔ rɔba a ɛma nneɛma kɔ ntɛmntɛm ho nhyehyɛe a ɛwɔ hɔ dedaw no mu, na wɔanya nea efi mu ba. afie mu nhwehwɛmufo ayɛ nhyehyɛe a ɛte saa ara a wɔde yiyi nneɛma a wɔde yɛ nneɛma a wɔde yiyi nneɛma mu a ɛne amannɔne aman nso wɔ hɔ, nanso ɔhaw ahorow nso wɔ hɔ{{1} abɔde ho banbɔ, ahobammɔ ne ahoɔden a wɔde di dwuma yiye a wɔde di dwuma wɔ ɔkwan a wɔfa so yi nneɛma fi mu no so} Ɔkwan, distillation-extraction kwan, solid-liquid extraction kwan, nsuo-nsuo a wɔyi firi mu ne nea ɛkeka ho. nanso, mfiridwuma no nyɛ pɛ a ɛfata.
Mprempren, organic solvents betumi apaw toluene, carbon disulfide, aniline, benzene ne nea ɛkeka ho.
Carbon disulfide a wɔde di dwuma sɛ solvent, ɛka a wɔhwɛ so ne ahobammɔ sohwɛ yɛ ɔhaw ahorow a ɛda nsow. ɛwom sɛ su no gyina hɔ pintinn na nneɛma no betumi adi amanaman ntam ahwehwɛde ahorow ho dwuma de, nanso ahobammɔ no ho hia sɛ wɔma ɛyɛ yiye esiane sɛ carbon disulfide no hyew na ɛpae.
Sɛ wɔde aniline di dwuma sɛ solvent a, aniline no tumi nwura mu kakra wɔ nsu mu, na ɛma aniline dodow kɔ soro wɔ ano aduru no mu, a ɛnyɛ nea ɛfata ma nneɛma a wɔyɛ.
benzene ne toluene na wɔde di dwuma sɛ solvents, solubility a resin no yɛ ketewaa, ahotew a product m nya nkɛntɛnso, na recovery solvent nso susuw. Afei nso, benzene ne toluene yɛ flammable na explosive, ahobammɔ factor yɛ low, volatilization causes solvent loss in the air air{1} lead to the aprɛw to aprepot to aput