1. He mea hoʻoheheʻe maikaʻi loa, hoʻohana nui ʻia e like me ka extractant no ka hoʻomaʻemaʻe ʻana i ka ʻaila, lubricating oil refining, acetylene concentration, syngas desulfurization, etc., a hoʻohana pū ʻia i ka hoʻomaʻemaʻe ʻoihana, etc.

ʻO 2.N-methylpyrrolidone kahi mea hoʻoheheʻe unuhi maikaʻi loa.Hoʻohana nui ʻia ʻo ia ma ke ʻano he extractant i ke kaʻina o ka hoʻoheheʻe ʻana i nā mea ʻala, ka ʻike acetylene, ka hoʻokaʻawale butadiene a me ka synthesis gas desulfurization.He pesticide hoʻi, ʻenekinia plastic, a me ka uhi puke kemika.Hiki ke hoʻohana ʻia nā mea hoʻoheheʻe i ka hana ʻana i nā mea, nā fibers synthetic, integrated circuits, etc., e like me nā detergents ʻoihana, dispersants, dyes, lubricants a me nā antifreezes.He haʻahaʻa ka ʻona o ka huahana, a ʻo ka LD50 waha no nā ʻiole he 7ml/kg.

3. Hoʻohana nui ʻia i ka hoʻomaʻemaʻe ʻana i ka ʻaila lubricating kiʻekiʻe, ka polymer synthesis, insulating material, pesticides, pigments a me nā mea hoʻomaʻemaʻe, etc.

4.Solvent.Hoʻohui ʻia.

5. Hoʻohana ʻia i ka ʻala ʻala, hoʻomaʻemaʻe i ka acetylene, olefin, a me diolefin;hoʻohana ʻia i loko o ka polymer solvent a me ka polymerization medium, e like me nā plastics engineering e like me polyamide, polyimide, polyphenylene sulfide, a me ka fiber aramid.

6.Hoʻohanaʻia e like me ka mea hoʻoheheʻe a me ka extractant.ʻO NMP ka mea hoʻoheheʻe polar aprotic me ka haʻahaʻa haʻahaʻa, kahi paila kiʻekiʻe, solubility koʻikoʻi, koho ikaika a paʻa maikaʻi.Hoʻohana nui ʻia ia i ka unuhi ʻana i nā mea ʻala;ka hoʻomaʻemaʻe ʻana i ka acetylene, nā olefins, a me nā olefins Chemicalbook ʻelua.Hoʻohana ʻia ia no nā mea hoʻoheheʻe polymer a me ka media polymerization.E like me ka polyamide, polyimide, polyphenylene sulfide a me nā mea ʻenehana ʻenehana a me nā fiber aramid.Hoʻohana ʻia ia i nā mea insulating, pesticides, pigments a me nā mea holoi.