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mankhwala

Vanillin(CAS#121-33-5)

Chemical Property:

Molecular Formula C8H8O3
Misa ya Molar 152.15
Kuchulukana 1.06
Melting Point 81-83°C(lat.)
Boling Point 170°C15mm Hg(kuyatsa)
Pophulikira 147 ° C
Nambala ya JECFA 889
Kusungunuka kwamadzi 10 g/L (25 ºC)
Kusungunuka Kusungunuka mu madzi 125 nthawi, 20 ethylene glycol ndi 2 kuwirikiza 95% ethanol, sungunuka mu chloroform.
Kuthamanga kwa Vapor >0.01 mm Hg (25 °C)
Kuchuluka kwa Vapor 5.3 (vs mpweya)
Maonekedwe White singano kristalo.
Mtundu Zoyera mpaka zachikasu
Merck 14,9932
Mtengo wa BRN 472792
pKa pKa 7.396±0.004(H2OI = 0.00t = 25.0±1.0) (Yodalirika)
PH 4.3 (10g/l, H2O, 20℃)
Mkhalidwe Wosungira 2-8 ° C
Kukhazikika Wokhazikika. Ikhoza kusinthika ikayaka kuwala. Zosamva chinyezi. Zosagwirizana ndi oxidizing amphamvu, perchloric acid.
Zomverera Mpweya & Kuwala Kumva
Refractive Index 1.4850 (chiyerekezo)
MDL Mtengo wa MFCD00006942
Zakuthupi ndi Zamankhwala Makristasi oyera ngati singano. Fungo lonunkhira.
Gwiritsani ntchito Monga reagent muyezo kwa organic kusanthula

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Zizindikiro Zowopsa Xi - Zosangalatsa
Zizindikiro Zowopsa R22 - Zowopsa ngati zitamezedwa
R36/37/38 - Zokwiyitsa maso, kupuma komanso khungu.
R36 - Zokhumudwitsa m'maso
Kufotokozera Zachitetezo 26 - Mukakumana ndi maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha upangiri wamankhwala.
WGK Germany 1
Mtengo wa RTECS YW5775000
TSCA Inde
HS kodi 29124100
Poizoni LD50 pamlomo makoswe, nkhumba za Guinea: 1580, 1400 mg / kg (Jenner)

 

Mawu Oyamba

Vanillin, mankhwala otchedwa vanillin, ndi organic pawiri ndi fungo lapadera ndi kukoma.

 

Pali njira zingapo zopangira vanillin. Njira yomwe imagwiritsidwa ntchito kwambiri imachotsedwa kapena kupangidwa kuchokera ku vanila wachilengedwe. Zosakaniza zachilengedwe za vanila zimaphatikizapo utomoni wa udzu wotengedwa mu nyemba za vanila ndi vanillin yamatabwa yotengedwa ku nkhuni. Njira yophatikizira ndiyo kugwiritsa ntchito phenol yaiwisi kudzera mu phenolic condensation reaction kuti apange vanillin.

Vanillin ndi chinthu choyaka moto ndipo chiyenera kusungidwa kutali ndi moto wotseguka komanso kutentha kwambiri. Valani magolovesi oteteza komanso magalasi oteteza mukamagwira ntchito kuti musakhudze khungu ndi maso. Kukoka mpweya wa fumbi kapena nthunzi kuyeneranso kupewedwa ndipo ntchito ziyenera kuchitidwa m'malo abwino mpweya wabwino. Vanillin nthawi zambiri imatengedwa kuti ndi mankhwala otetezeka kwambiri omwe sawononga kwambiri anthu akagwiritsidwa ntchito ndikusungidwa bwino. Komabe, kwa anthu ena omwe ali ndi ziwengo, kuwonetsa kwanthawi yayitali kapena kwakukulu kwa vanillin kungayambitse kusamvana ndipo kuyenera kugwiritsidwa ntchito mosamala.


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