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

Believe Chemical inotungamira China 2-Bromo-5-nitropyridine CAS 4487-59-6 mugadziri, mutengesi uye mutengesi. Kuomerera pakutsvaga kwehutano hwakakwana hwezvigadzirwa, kuitira kuti 2-Bromo-5-nitropyridine CAS 4487-59-6 yedu yakagutsikana nevatengi vakawanda. Shandong Tendai

Isu takanaka pane zvakanakira zvemakemikari zvigadzirwa mumunda. Zvigadzirwa zvedu zvinotengeswa kuEurope, United States, Japan, South Korea, Southeast Asia nedzimwe nyika nematunhu. Iine sainzi uye tekinoroji segwara, kutendeseka sehwaro, mhando sehupenyu, uye kuvimba nepfungwa yebhizinesi yekuvandudza nekusimudzira, isu tinotarisira nemoyo wese kutanga kuchinjana uye kudyidzana kwakakura nevatengi vemuno nevekunze kugadzira budiriro!

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

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

Kunyungudika 139-141°C (lit.)
Poindi yekuvira 145-147°C/10mmHg(lit.)
Density 1.8727(roughestimate)
Refractive index 1.6200 (fungidziro)
Flash point 145-147°C/10mm
Mamiriro ekuchengetedza Inertatmosphere, 2-8°C
Solubility Chloroform, HotMethanol
MorphologyCrystallinePowder
Acidity coefficient (pKa) -3.24±0.10(Yakafanotaurwa)
RuvaraLightyellowtolightbrown

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

Musanganiswa we1.53 g (10.94 mmol) we2-hydroxy-5-nitropyridine, 4.1 g (12.71 mmol) wetetrabutylammonium bromide uye 3.71 g (26.1 mmol) weP2O5 mu29 ml yebenzene wakapiswa nereflux Kurudzira kweawa imwe chete. Musanganiswa wacho wakatonhodzwa kusvika kukushisa kwekamuri, chikamu chepamusoro chakaparadzaniswa nekucheneswa, uye chikamu chezasi chakaitwa triturated nebenzene (3 x 6 ml). Zvinyorwa zvakasanganiswa nechikamu chehupenyu, zvakashambidzwa nemhinduro yakazara yeNaHCO3 neNaCl, uye yakaomeswa pamusoro peMgSO4. Mushonga wacho wakanyungudutswa pasi pekumanikidzwa kwakaderedzwa, uye zvakasara zvakagadziridzwa kubva mupetroleum ether. Goho 1.7g (48%). Mp138-139°C, (bp40-70°C).