2-Chloro-3-bromo-5-nitropyridine (CAS# 5470-17-7)

Mawu Oyamba

Ndi organic pawiri yomwe mankhwala ake ndi C5H2BrClN2O2.

Chilengedwe:

1. Maonekedwe: Ndiwolimba, nthawi zambiri ndi ufa wachikasu wa crystalline.

2. Kusungunuka: Ikhoza kusungunuka mu zosungunulira za organic (monga dichloromethane, ether, etc.), koma kusungunuka m'madzi kumakhala kochepa.

Gwiritsani ntchito:

Ndiwofunika kwambiri wapakatikati, womwe umagwiritsidwa ntchito kwambiri pakupanga mankhwala.

1. Kaphatikizidwe ka mankhwala: Itha kugwiritsidwa ntchito popanga zinthu zomwe zimagwira ntchito mwachilengedwe, monga mankhwala, mankhwala ophera tizilombo, ndi zina.

2. Kaphatikizidwe ka utoto: Itha kugwiritsidwa ntchito popanga utoto ndi utoto.

3. Kaphatikizidwe ka mankhwala: atha kugwiritsidwa ntchito popanga mankhwala ophera tizilombo komanso mankhwala ophera udzu.

Kukonzekera Njira: Kukonzekera kwa

zitha kuchitidwa ndi onunkhira nitration reaction, masitepe enieni ndi awa:

1. Pazifukwa zoyenera, pyridine imachitidwa ndi nitric acid yowonjezera kuti ipeze pyridine-3-nitric acid.

2. Pyridine-3-nitric acid ndiye amachitidwa ndi cuprous bromide kuti apeze 3-bromopyridine.

3. Pomaliza, 3-bromopyridine imachitidwa ndi siliva chloride kuti ipeze mankhwala omaliza.

Zambiri Zachitetezo:

1. ali ndi mlingo wina wa mkwiyo ndi kawopsedwe, chonde pewani kukhudzana ndi khungu, maso ndi kupuma.

2. pogwira ntchito, ayenera kuvala magolovesi oteteza, magalasi ndi masks ndi zida zina zodzitetezera.

3. posungira ndikugwiritsa ntchito, ziyenera kusungidwa mosiyana ndi zotentha, zowonjezera zowonjezera ndi zinthu zina.

4. Potaya zinyalala, chonde tsatirani malamulo otayira zinyalala kuti muchepetse chiopsezo cha kuipitsidwa kwa chilengedwe.