Ke kūpaʻa nei mākou e hāʻawi iā ʻoe i ke kumukūʻai hoʻokūkū, nā huahana kupaianaha maikaʻi loa, a me ka lawe wikiwiki ʻana no ka Mea Hana o Kina Sell 99.5% Propionic Acid CAS 79-09-4 me ke kumukūʻai hale hana, I nā manawa a pau, ua hoʻolohe mākou i nā kikoʻī āpau e hōʻoia i kēlā me kēia huahana i māʻona ʻia e kā mākou mea kūʻai aku.
Ke kūpaʻa nei mākou e hāʻawi iā ʻoe i ke kumukūʻai hoʻokūkū, nā huahana kupaianaha maikaʻi loa, a me ka lawe wikiwiki ʻana no, ʻO ke kulekele o kā mākou Hui ʻo "ka maikaʻi mua, e ʻoi aku ka maikaʻi a me ka ikaika, ka hoʻomohala hoʻomau". ʻO kā mākou pahuhopu alualu ʻana "no ke kaiāulu, nā mea kūʻai aku, nā limahana, nā hoa hana a me nā ʻoihana e ʻimi i ka pono kūpono". Makemake mākou e hana pū me nā mea hana ʻāpana kaʻa like ʻole, ka hale hana hoʻoponopono, nā hoa kaʻa, a laila e hana i kahi wā e hiki mai ana nani! Mahalo iā ʻoe no ka lawe ʻana i ka manawa e nānā i kā mākou pūnaewele a e hoʻokipa mākou i nā manaʻo āu e loaʻa ai e hiki ke kōkua iā mākou e hoʻomaikaʻi i kā mākou pūnaewele.
Ka Nānā ʻAno o ke ʻAno Kemika Waikawa Propionic
Mai kahi kuanaʻike o ke ʻano molekala, hiki ke hoʻokaʻawale ʻia ke ʻano o ka waikawa propionic CH₃CH₂COOH i ʻekolu mau ʻāpana koʻikoʻi. Hōʻike ka hui methyl terminal (CH₃–) i nā ʻano alkyl saturated, hana ka hui methylene waena (–CH₂–) ma ke ʻano he ʻāpana hoʻohui, a hāʻawi ka hui carboxyl (–COOH) i ka mole i kona mau waiwai acidic maʻamau. ʻO kēia hoʻonohonoho ʻana o ke ʻano, hōʻike ka waikawa propionic i kekahi mau waiwai alkane-like a me ka reactivity waikawa carboxylic maʻamau.
Ma ke ʻano ākea, he hoʻonohonoho linear maʻalahi ko ka molekole waikawa propionic. ʻO ka pilina pālua C=O a me ka hui –OH hydroxyl i loko o ka hui carboxyl e hana i kahi ʻano coplanar, ʻoiai ke kaulahao alkyl e hoʻohana i kahi geometry tetrahedral ma o ka hybridization sp³. Hāʻawi kēia ʻano i ka molekole i ka polarity kaulike, e wehewehe ana i kona miscibility me ka wai me ka mālama ʻana i ka launa pū me nā solvents non-polar e like me diethyl ether a me chloroform.
ʻO ka mea nui, hoʻokaʻawale hapa ʻia ka hydrogen carboxyl i loko o ka waikawa propionic i loko o ka hopena wai, e hoʻokuʻu ana i nā ion H⁺ a hana i nā anion propionate (CH₃CH₂COO⁻). ʻO kēia dissociation ka hopena i kahi pKa o 4.87 (ma 25°C), e hoʻokaʻawale ana iā ia ma ke ʻano he waikawa nāwaliwali maʻamau. He mea koʻikoʻi kēia ʻano acid-base i nā noi he nui, ʻoiai ma ke ʻano he mea mālama meaʻai, kahi e hiki ai i kona ʻano molekala undissociated ke komo maikaʻi i loko o nā membrane cell microbial.