3-[N,N-Bis(hydroxyethyl)amino]-2-hydroxypropanesulphonic acid sodium paʻakai, ʻike ʻia hoʻi ʻo BES sodium paʻakai, he mea hoʻohui kemika i hoʻohana mau ʻia i ka noiʻi biochemical a me nā noi lāʻau.He ʻakika sulfonic ia me ke ʻano paʻakai sodium, e hoʻoheheʻe ʻia i ka wai a paʻa i nā ʻano wai.
Loaʻa i ka paʻakai paʻakai BES kahi ʻano molekala o C10H22NNaO6S a me ke kaumaha molekala ma kahi o 323.34 g/mol.Hoʻohana pinepine ʻia ʻo ia ma ke ʻano he buffering agent ma muli o kona hiki ke mālama i kahi pae pH paʻa i nā hopena.
ʻIke ʻia kēia pūhui no kona hiki ke pale aku i nā loli pH i hoʻokumu ʻia e ka dilution a i ʻole ka hoʻohui ʻana o nā waikawa a me nā kumu.Hoʻohana maʻamau ia i nā hopena biological a enzymatic, media moʻomeheu cell, hoʻomaʻemaʻe protein, a me nā noi ʻē aʻe kahi koʻikoʻi ka mālama pono ʻana o ka pH.