2-Bromo-5-nitropyridine CAS 4487-59-6

Believe Chemical ndiwopanga China 2-Bromo-5-nitropyridine CAS 4487-59-6 wopanga, wogulitsa ndi kutumiza kunja. Kutsatira kufunafuna zinthu zabwino kwambiri, kotero kuti 2-Bromo-5-nitropyridine CAS 4487-59-6 yathu yakhutitsidwa ndi makasitomala ambiri. Shandong Khulupirirani

Ndife abwino pa ubwino wa mankhwala mankhwala m'munda. Zogulitsa zathu zimatumizidwa ku Europe, United States, Japan, South Korea, Southeast Asia ndi mayiko ena ndi zigawo. Ndi sayansi ndi luso monga kalozera, kukhulupirika monga maziko, khalidwe moyo, ndi kudalira lingaliro ogwira ntchito za luso ndi chitukuko, ife moona mtima tikuyembekeza kukhazikitsa kusinthanitsa ndi mgwirizano waukulu ndi makasitomala m'nyumba ndi akunja kulenga chitukuko!

2-Bromo-5-nitropyridine CAS 4487-59-6 Kufotokozera kwa Chemical

2-Bromo-5-nitropyridine CAS 4487-59-6 Chemical Properties

Malo osungunuka 139-141°C (kuyatsa)
Malo otentha 145-147°C/10mmHg(lit.)
Kachulukidwe 1.8727 (kuyerekeza)
Refractive index 1.6200 (kuyerekeza)
Kuwala kwa 145-147°C/10mm
Zosungirako Zosungiramo mumlengalenga, 2-8°C
Solubility Chloroform, HotMethanol
MorphologyCrystallinePowder
Acidity coefficient (pKa) -3.24±0.10(Zonenedweratu)
Mtundu WowalaWayellowtolightbrown

2-Bromo-5-nitropyridine CAS 4487-59-6 Ntchito

Kusakaniza kwa 1.53 g (10.94 mmol) wa 2-hydroxy-5-nitropyridine, 4.1 g (12.71 mmol) wa tetrabutylammonium bromide ndi 3.71 g (26.1 mmol) wa P2O5 mu 29 ml ya benzene anatenthedwa pa reflux Kugwedeza kwa ola limodzi. Chisakanizocho chinazizidwa kuti chikhale kutentha, chapamwamba chinasiyanitsidwa ndi decantation, ndipo chapansi chinali triturated ndi benzene (3 x 6 ml). Zowonjezerazo zinaphatikizidwa ndi gawo la organic, kutsukidwa ndi yankho lodzaza la NaHCO3 ndi NaCl, ndikuwumitsa pa MgSO4. Chosungunuliracho chinasungunuka pansi pa kupanikizika kochepa, ndipo zotsalirazo zinapangidwanso kuchokera ku petroleum ether. Zokolola 1.7g (48%). Mp138-139°C, (bp40-70°C).