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

Te hurihanga motuhake
Tangohia tenei hua, ka ata paunatia, ka tapirihia he wai kia memeha me te waimeha ine ine ki roto i te otinga kei roto i te 10 mg ia 1 ml, ka whakatau i runga i te ture (Ture Whanui 0621), ko te hurihanga motuhake ko 159° ki te 164°.
Te tātaritanga rereke
Tangohia kia 0.2 karamu o tenei hua, taapirihia te 2ml o te wairewa whakamatautau Iodine, whakamahana ki roto i te pati wai kia memeha, ka tuku kia whakamatao kia puta mai he kowhai-parauri.
I roto i te chromatogram i tuhia i raro i te mea whakatau ihirangi, ko te wa pupuri o te tihi matua o te otinga whakamatautau kia rite ki te wa pupuri o te tihi matua o te otinga whakahaere.6
Ko te tuāwhiorangi whakauru infrared o tenei hua kia rite ki tera o te hua tohutoro (Ture Whanui 0402).
Te horonga o nga poke
Tangohia tenei hua mo te 1 g, te pauna tika, te taapiri i te wai 100ml ki te memeha, kia rite ki te UV-kitea spectrophotometry (General ture 0401) whakatau, te absorbance i roto i te roangaru awhe o 230 ~ 350nm kaua e neke atu i te 0.10, te absorbance i roto i te whānuitanga roangaru. o 350~750nm kaua e neke ake i te 0.05.
pH
tangohia 0.20g o tenei hua, tāpiri 20ml o te wai ki te memeha, tāpiri 0.2ml o te otinga pāhare pāporo pūhaumāota, ka whakatau rite ki te ture (Ture General 0631), kia 5.0~8.0 uara pH.
Te maama me te tae o te otinga
Tangohia tenei hua 0. 50g, tāpirihia te 50ml wai kia memeha, tirohia kia rite ki te ture (Ture Whanui 0901 me te ture whanui 0902), kia marama te otinga me te kore tae;Mēnā he pōkākā, whakatauritea ki te otinga paerewa No. 2 Turbidity (Ture whānui 0902, tikanga tuatahi), kaua e kaha ake.
pūhaumāota
Tangohia tenei hua 0.39G, tirohia kia rite ki te ture (Ture Whanui 0801), me te otinga konutai konutai pūhaumāota 7.0ml kia kaua e nui ake i te otinga whakahaere (0.018%).
Te whakaheke huka
Tangohia tenei hua 1.0 g, te pauna tika, taapirihia te wai 25ml ki te memeha, Tāpirihia te wairewa whakamātautau tartrate konukura kawakore 40tnl, ata kohuatia mo te 3 meneti, tuu ki te pāmahana rūma mo te po, tātari ki te 4 # te koorewa whakarewa poutū, ka horoia te para ki te wai mahana tae noa ki te korenga o te wairewa horoi.I makahia te filtrate me te wairewa horoi, i te wa e wera ana ki te wairewa titration pāhare pāporo (0 .0M ol/L).E ai ki te hua maroke, kaua e neke ake i te 3.2ml(1.0%) te kai o te konupora permanganate titrant (0.02 Mol/l) mo ia Lg.
Cyclohexane
Tangohia te 0.2g o tenei hua, te pauna tika, ki roto i te pounamu kau o runga, taapirihia te otinga paerewa o roto (tangohia te nui tika o te dichlorethylene, taapirihia te otinga dimethyl sulfoxide 20% hei hanga i te otinga kei roto i te 0.04 i ia lm l, (Reri ) 10.0ml, hei otinga whakamatautau; Ko tetahi atu cyclohexane te pauna tika, me te otinga paerewa o roto ki te hanga tata ki te 1 l/l kei roto cyclohexane 0.078mg o te otinga, inehia te 10.0ml i roto i te pounamu kau o runga hei otinga mana. whakatau whakarewa toenga (Ture whanui 0861), ko te poupou kapi me te 100% dimethylpolysiloxane hei wai tuuturu ka whakamahia hei tīwae chromatographic; Ko te pāmahana o te pou ko te 90℃; Ko te pāmahana whakauru ko te 200℃; Ko te pāmahana kaitirotiro he 250℃; te pounamu Headspace He 70 ℃ te pāmahana whakaōrite me te wā whakaōrite he meneti 20. Tangohia te otinga tohutoro ki roto i te mokowā mahunga, ko te tohu wehenga i waenga i nga tihi o ia waahanga kia rite ki nga tikanga.Ko te otinga whakamatautau me te otinga tohutoro ka werohia ki te upoko mokowhiti, ka tuhia te chromatogram, ka tatauhia te waahi tihi kia rite ki te tikanga paerewa o roto.
Ngaronga i te whakamaroke
Tangohia tenei hua, maroke ki te taumaha tonu i te 105 ℃, kaua e neke ake te mate taimaha i te 14.0% (Ture Whanui 0831).
Te toenga mura
Ko te 1.0 g o tenei hua ka tangohia mo te tirotiro i runga i te ture (Ture Whanui 0841), kaua e neke ake te toenga.
Nga konganuku taumaha
Ko te toenga e waiho ana i raro i te mea tango i te toenga mura kia kaua e neke ake i te 10 nga wahanga mo ia miriona o te konganuku taumaha ina tirohia e te ture (General Principles 0821, Ture II).
Te rohe moroiti
Ko tenei hua ka tangohia, ka tirotirohia i runga i te ture (General Principles 1105 and 1106).Ko te tapeke o nga huakita aerobic mo ia lg o te hua whakamatautau kaua e neke ake i te 100cfu, ko te tapeke o nga maaka me nga rewena kaua e neke atu i te 100cfu, E. Coli kaua e kitea.
Te whakatau ihirangi
Ka inehia e te chromatography wai mahi teitei (General 0512).
Ko nga ahuatanga Chromatographic me te pai o te punaha he whakamatautau i te Tekau ma waru alkyl silane-boned silica gel i whakamahia hei whakakii;Ko te wai-methanol (85 : 15) i whakamahia hei wahanga mokowhiti;A, i mahia te inenga me te kaitirotiro taupū rerenga rerekee.Ko te tau pereti ariā e kore e iti iho i te 1500 ka kiia ko te tihi cyclodextrin betal.
tikanga whakatau: tangohia te 50mg o tenei hua, kia tika te pauna, hoatu ki roto i te ipu ine 10ml, taapirihia he wai e tika ana hei memeha me te waimeha ki te tauine, ruru pai, ka whakamahia hei otinga whakamatautau, 10/xl i werohia ki roto i te chromatograph wai, ka tuhia te chromatogram.Ko tetahi atu 50mg o te matū tohutoro o te betaloc cyclodextrin i ine tika, me te tikanga ano i whakamahia mo te whakatau.E ai ki te tikanga paerewa o waho ki te tatau i te waahi tihi, ara.