β-Cyclodextrin (β-CD) CAS 7585-39-9 Mayeso 98.0% ~ 102.0% Factory

Kuzungulira kwachindunji
Tengani mankhwalawa, muyese bwino, onjezani madzi kuti asungunuke ndikuwasungunula mochuluka mu yankho lomwe lili ndi pafupifupi 10 mg pa 1 ml, ndipo dziwani motsatira lamulo (General rule 0621), kasinthasintha kwenikweni anali 159 ° mpaka 164 °.
Kuzindikira kosiyana
Tengani pafupifupi 0.2g ya mankhwalawa, onjezani 2ml ya yankho la ayodini, tenthetsani mu osamba m'madzi kuti musungunuke, ndikusiya kuti iziziziritsa kuti zipangitse mvula yachikasu-bulauni.
Mu chromatogram yolembedwa pansi pa chinthu chotsimikizira zomwe zili, nthawi yosungira pachimake chachikulu cha yankho la mayeso iyenera kukhala yogwirizana ndi nthawi yosungira pachimake chachikulu cha yankho lowongolera.6
Mayamwidwe a infrared a mankhwalawa akuyenera kukhala ogwirizana ndi zomwe zimatchulidwa (General Law 0402).
Kuchotsedwa kwa zonyansa
Tengani mankhwalawa pafupifupi 1 g, kulemera kwake kolondola, onjezerani madzi 100ml kuti musungunuke, malinga ndi kutsimikiza kwa UV-visible spectrophotometry (General ulamuliro 0401), kuyamwa kwa kutalika kwa 230 ~ 350nm kuyenera kusapitirira 0.10, kutengeka kwa kutalika kwa mawonekedwe a kutalika kwa 230 ~ 350nm. wa 350 ~ 750nm sayenera kupitirira 0.05.
pH
tengani 0.20g ya mankhwalawa, onjezerani 20ml wa madzi kuti musungunuke, onjezerani 0.2ml wa potassium chloride solution, ndipo fufuzani motsatira malamulo (General rule 0631), pH mtengo uyenera kukhala 5.0 ~ 8.0.
Kumveka bwino ndi mtundu wa yankho
Tengani mankhwalawa 0. 50g, onjezerani 50ml wa madzi kuti musungunuke, fufuzani molingana ndi lamulo (General Law 0901 ndi lamulo lalikulu 0902), yankho liyenera kukhala lomveka bwino komanso lopanda mtundu;Pankhani ya turbidity, yerekezerani ndi No. 2 Turbidity standard solution (General rule 0902, njira yoyamba), osati yowonjezereka.
Chloride
Tengani mankhwala 0.39G, kufufuzidwa malinga ndi lamulo (General ulamuliro 0801), ndi muyezo sodium kolorayidi yankho 7.0ml sayenera moikirapo kuposa ulamuliro njira (0.018%).
Kuchepetsa shuga
Tengani mankhwalawa 1.0 g, masekeli olondola, onjezani madzi 25ml kuti asungunuke, Onjezani yankho la alkaline tartrate test solution 40tnl, wiritsani pang'onopang'ono kwa mphindi zitatu, ikani kutentha kwa usiku, fyuluta ndi 4 # ofukula kusungunuka, mpweya umatsukidwa ndi madzi ofunda. mpaka njira yotsuka inali yosalowerera.The filtrate ndi kutsuka njira anatayidwa, pamene otentha ndi potaziyamu permanganate titration solution (0 .0M ol/L) titration.Malinga ndi mankhwala owuma, kumwa potassium permanganate titrant (0.02 Mol/l) pa L g sikuyenera kupitirira 3.2ml (1.0%).
Cyclohexane
Tengani pafupifupi 0.2g ya mankhwalawa, kulemera kwake, mu botolo lopanda kanthu, onjezerani njira yothetsera mkati (tengani dichlorethylene yokwanira, onjezerani 20% dimethyl sulfoxide solution kuti mupange yankho lomwe lili ndi pafupifupi 0.04 mu lm l iliyonse, (Okonzeka 10.0ml, monga njira yoyesera; Kulondola kwina kolemera kwa cyclohexane, kuphatikiza njira yothetsera mkati yopangira pafupifupi 1 l/l yokhala ndi cyclohexane 0.078mg ya yankho, yesani 10.0ml mu botolo lopanda kanthu lapamwamba ngati njira yothetsera. residual solvent determination (General rule 0861), capillary column with 100% dimethylpolysiloxane as stationary liquid is used as the chromatographic column; Kutentha kwa nsanamira ndi 90 ℃; Kutentha kolowera ndi 200 ℃; Kutentha kwa detector ndi 250 ℃; botolo la Headspace kutentha kwa mgwirizano kunali 70 ℃ ndipo nthawi yogwirizanitsa inali maminiti a 20. Tengani yankho lachidziwitso kumutu wamutu, digiri yolekanitsa pakati pa nsonga za chigawo chilichonse chiyenera kukhala mogwirizana ndi zomwe zilipo.Yankho loyesa ndi yankho lolozera limabayidwa motsatana pamutu, chromatogram imajambulidwa, ndipo malo okwera kwambiri amawerengedwa molingana ndi njira yamkati.
Kutaya pakuyanika
Tengani mankhwalawa, owuma mpaka kulemera kosalekeza pa 105 ℃, kuwonda sayenera kupitirira 14.0% (General ulamuliro 0831).
Zotsalira poyatsira
1.0 g ya mankhwalawa idzatengedwa kuti iwunikenso malinga ndi lamulo (General Law 0841), ndipo zotsalirazo zisapitirire.
Zitsulo zolemera
Zotsalira zomwe zatsala pansi pa chinthu chotengera chotsalira choyatsira sizikhala ndi magawo opitilira 10 pa miliyoni imodzi yazitsulo zolemera zikafufuzidwa ndi lamulo (General Principles 0821, Law II).
Malire a Microbial
Chogulitsachi chidzatengedwa ndikuwunikidwa molingana ndi malamulo (General Mfundo 1105 ndi 1106).Chiwerengero chonse cha mabakiteriya a aerobic pa lg ya mankhwala oyezetsa sayenera kupitilira 100cfu, kuchuluka kwa nkhungu ndi yisiti zisapitirire 100cfu, E. Coli sayenera kuzindikirika.
Kutsimikiza kokhutira
Kuyesedwa ndi chromatography yamadzimadzi yapamwamba kwambiri (General 0512).
Mikhalidwe ya Chromatographic ndi kuyenerera kwa dongosolo gel osakaniza a silika alkyl khumi ndi asanu ndi atatu adagwiritsidwa ntchito ngati chodzaza;Madzi-methanol (85: 15) adagwiritsidwa ntchito ngati gawo la mafoni;Ndipo muyesowo udachitidwa ndi chowunikira chosiyana cha refractive index.Nambala ya mbale ya theoretical si yochepera 1500 yowerengedwa ngati betal cyclodextrin pachimake.
njira yotsimikizira: tengani pafupifupi 50mg ya mankhwalawa, muyese molondola, muyike mu botolo la 10ml, onjezerani madzi okwanira kuti musungunuke ndi kusungunula pamlingo, gwedezani bwino, ndikugwiritseni ntchito ngati njira yothetsera mayesero, 10 / xl. anabayidwa mu chromatograph yamadzimadzi molondola, ndipo chromatogram inalembedwa.Wina 50mg wa chinthu chofotokozera cha betaloc cyclodextrin adayesedwa molondola, ndipo njira yomweyi idagwiritsidwa ntchito pozindikira.Malinga ndi kunja muyezo njira kuwerengera nsonga m'dera, ndiko.