ʻO ka Spectroscopy Nuclear Magnetic Resonance (NMR) o ka waikawa Propionic
E hoʻohana i kahi spectrometer resonance magnetic nuclear no ka ʻike ʻana i ka waikawa propionic. Ma ka lawe ʻana i ka nānā ʻana o ke ʻano o ka waikawa propionic i nā huahana synthesis kemika ma ke ʻano he laʻana, e hoʻomākaukau mua i ka laʻana i loko o kahi hopena o ka noʻonoʻo kūpono, e hoʻohana pinepine ana i nā reagents deuterated e like me ka deuterated chloroform e pale aku i ka hoʻopilikia ʻana mai ka piko solvent ma ka piko laʻana. E kau i ka paipu NMR e loaʻa ana ka hopena laʻana i loko o ka probe o ka spectrometer NMR. Hoʻopuka ka mea kani i nā pulse radiofrequency e hoʻoulu i nā hoʻololi pae ikehu nuklea i loko o nā ʻātoma o nā molekala laʻana. Hoʻopili nā nuclei i nā ʻano kemika like ʻole a hoʻopuka i nā hōʻailona radiofrequency ʻokoʻa, e hopena ana i nā piko like ʻole i ka spectrum NMR. Ma ka nānā ʻana i ke kaiapuni kemika o kēlā me kēia ʻātoma hydrogen i loko o ka molekala waikawa propionic, me ka ʻike e like me ke kūlana piko (ka hoʻololi kemika) a me ka māhele piko (coupling constant), hiki ke hōʻoia ʻia ke ʻano o ka waikawa propionic. Hiki ke hana ʻia ka nānā ʻana i ka nui o kona ʻike i kekahi ʻano. Eia nō naʻe, ʻoi aku ka pololei o ka spectroscopy NMR no ka nānā ʻana i ka nui i hoʻohālikelike ʻia me nā ʻano hana ʻē aʻe, akā hāʻawi ia i nā pono kūikawā no ka nānā ʻana i ke ʻano.

ʻO Shandong Pulisi Chemical Propionic Acid    info@pulisichem.cn
Hāʻawi ʻo Shandong Pulisi Chemical i ka waikawa propionic kiʻekiʻe CAS 79-09-4 me ka maʻemaʻe a hiki i ka 99.5%. ʻO ka kaohi haumia koʻikoʻi e hōʻoiaʻiʻo i ka hana paʻa no ka mea mālama meaʻai, ka mea hoʻohui hānai, ka waena kemika a me ka hoʻohana ʻana i nā mea maka ʻoihana.
Loaʻa iā mākou nā hale kūʻai awa kūʻokoʻa a me ke kaulahao lako paʻa ma uka, e kākoʻo ana i ka hoʻopili maʻalahi, ka waihona wahi lawa a me ka lawe wikiwiki ʻana i ka honua. Hele mai kēlā me kēia pūʻulu me ka COA piha a me MSDS, me ka nānā pono ʻana i ka maikaʻi e hōʻoia i ka paʻa mau o ka pūʻulu. ʻO ka lawelawe hoʻokuʻu aku hoʻokahi-kū e hoʻolilo iā mākou i mea hoʻolako waikawa propionic lōʻihi hilinaʻi mai Kina.

https://www.pulisichem.com/factory-price-99-5-propionic-acid-cas-79-09-4-propionic-acid-for-food-preservatives-product/