Propionic Acid National Standard (GB Cov Lus Qhia)
Tus qauv hauv tebchaws rau propionic acid txhais meej meej nws qhov tsos: nws yuav tsum yog cov kua tsis muaj xim, pob tshab nrog ntxhiab tsw qab, thiab nws cov xim yuav tsum ua tau raws li cov qauv xim pom tshwj xeeb (piv txwv li, nrog tus nqi APHA tsis pub tshaj qhov txwv tshwj xeeb) kom ntseeg tau tias cov khoom ua tau raws li cov kev cai zoo ntawm qhov tsos.
Hais txog kev huv, tus qauv hauv tebchaws yuav tsum muaj cov propionic acid tsawg kawg nkaus ntawm 99.0%. Qhov kev xav tau no ua kom ntseeg tau tias propionic acid ua haujlwm ruaj khov thiab txhim khu kev qha thoob plaws ntau yam kev tsim khoom lag luam thiab cov xwm txheej siv. Cov dej noo yog qhov tseem ceeb uas cuam tshuam rau qhov zoo ntawm cov khoom; raws li tus qauv, cov dej yuav tsum tswj tau qis dua 0.5% kom tiv thaiv cov dej noo ntau dhau los cuam tshuam rau nws cov khoom siv tshuaj lom neeg thiab kev ua haujlwm. Acidity, ua tus qhia tseem ceeb, kuj tau teev meej meej: acidity (qhia ua feem pua ​​​​​​ntawm qhov hnyav, suav ua propionic acid) yuav tsum poob rau hauv qhov ntau yam kom lav qhov ruaj khov ntawm cov khoom thiab kev ua haujlwm raws li qhov yuav tsum tau ua. Cov hlau hnyav yog txwv nruj me ntsis hauv tus qauv - txhuas, mercury, thiab lwm yam hlau hnyav raug txwv rau qib qis heev, feem ntau ntsuas hauv ppm (qhov ib lab), kom ntseeg tau tias muaj kev nyab xeeb rau kev siv hauv zaub mov, tshuaj, thiab lwm yam kev lag luam rhiab heev.
Tus qauv hauv tebchaws kuj tseem yuav tsum muaj cov kev cai tshwj xeeb rau qhov ceev. Ntawm qhov kub thiab txias uas tau teev tseg (piv txwv li, 20 ° C), qhov ceev yuav tsum poob rau hauv qhov ntau thiab tsawg uas tau teev tseg, uas qhia txog seb cov khoom lub cev puas ua raws li cov qauv. Qhov kub thiab txias yog lwm qhov tseem ceeb uas yuav tsum xav txog: propionic acid yuav tsum muaj qhov kub thiab txias feem ntau yog 140 ° C - 142 ° C, kom ntseeg tau tias nws qhov kev ruaj khov thermal thiab volatility ua tau raws li cov kev xav tau ntawm kev lag luam. Cov ntsiab lus chloride raug tswj hwm nruj me ntsis, nrog rau tus qauv xav kom cov qib chloride qis dua qhov txwv tshwj xeeb (piv txwv li, 0.001%) kom tiv thaiv kev cuam tshuam tsis zoo rau cov khoom zoo thiab kev ua tiav tom qab. Cov ntsiab lus hlau kuj raug rau cov kev txwv meej, feem ntau tsis pub tshaj 0.0001%, kom tsis txhob muaj cov ntsiab lus hlau cuam tshuam rau xim, kev ruaj khov, thiab kev ua tau zoo ntawm propionic acid hauv qee qhov kev siv tshwj xeeb.
Hais txog kev yaj tau, tus qauv hauv tebchaws xav kom propionic acid ua kom pom kev yaj tau zoo hauv cov kuab tshuaj tshwj xeeb (piv txwv li, ethanol, diethyl ether), uas ua rau muaj kev sib xyaw ua ke ntawm qee qhov sib piv kom ua tau raws li cov kev xav tau ntawm cov qauv thoob plaws ntau yam kev siv.

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Shandong Pulisi Chemical Co., Ltd. yog ib lub tuam txhab tsim khoom thiab muab cov tshuaj propionic acid zoo hauv Suav teb, uas mob siab rau kev xa cov khoom huv si, kev muab khoom txhim khu kev qha, thiab cov kev daws teeb meem rau cov neeg siv khoom lag luam thoob ntiaj teb. Peb cov tshuaj propionic acid yog tsim tawm raws li cov qauv GB/T 10615 nruj, nrog rau qib siab tshaj plaws purity ncav cuag ≥99.5% thiab qib thawj zaug ntawm ≥99.0%, muaj cov dej noo tsawg, cov hlau tsawg, thiab cov hlau hnyav tswj tau kom ua tau raws li cov kev xav tau ntawm ntau yam kev siv kawg.
Ua los ntawm kev siv tshuab propylene oxidation siab heev, peb cov propionic acid ua kom muaj cov tshuaj lom neeg ruaj khov, yaj tau zoo heev, thiab zoo ib yam tom qab ib yam. Nws ua haujlwm ua ib qho tseem ceeb hauv kev tsim cov organic, kev tsim yas, cov txheej txheem electroplating, kev khaws cia zaub mov thiab khoom noj, thiab kev tsim tshuaj thiab agrochemical. Txhawb nqa los ntawm peb lub chaw soj nstuam zoo hauv tsev thiab cov txheej txheem kuaj xyuas tag nrho, txhua qhov kev xa khoom yog nrog COA tag nrho, MSDS, thiab lwm cov ntaub ntawv ua raws cai kom yooj yim rau kev xa khoom thiab siv thoob ntiaj teb.
Peb muaj ntau xyoo ntawm kev xa khoom mus rau Asia, Europe, Middle East, thiab lwm qhov chaw, peb muab cov kev xaiv ntim khoom yooj ywm, tus nqi sib tw, thiab cov nqe xa khoom txhim khu kev qha xws li FOB, CIF, thiab DDP. Txawm tias koj xav tau cov xaj me me lossis cov khoom loj, peb pab neeg mob siab rau muab kev txhawb nqa kev txawj ntse thiab kev pabcuam tshwj xeeb kom tau raws li koj cov kev xav tau ua lag luam.