5-Chloro-2-hydroxy-3-nitropyridine (CAS # 21427-61-2)
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag R37/38 - Kab mob ua pa thiab tawv nqaij. R22 - Ua phem yog tias nqos |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. S39 - Hnav qhov muag / ntsej muag tiv thaiv. S36 - Hnav khaub ncaws tiv thaiv zoo. S37 - Hnav cov hnab looj tes tsim nyog. |
| WGK Germany | 3 |
| HS Code | 29337900 ib |
| Hazard Class | IRRITANT |
Taw qhia
Properties: Nws muaj tsawg solubility nyob rau hauv dej thiab zoo solubility nyob rau hauv cov organic solvents. Nws cov khoom siv tshuaj muaj zog thiab nws yooj yim rau kev txo qis, alkylation thiab lwm yam tshuaj tiv thaiv.
Siv:
2-hydroxy-3-nitro-5-chloropyridine muaj qee yam kev siv nyiaj hauv cov organic synthesis. Nws tuaj yeem siv los ua ib qho tseem ceeb hauv nruab nrab ntawm cov organic synthesis thiab koom nrog ntau cov organic synthesis, xws li cov synthesis ntawm hop flavour compounds.
Txoj kev:
Muaj ntau txoj hauv kev rau kev npaj ntawm 2-hydroxy-3-nitro-5-chloropyridine, txoj kev siv ntau yog tau los ntawm nitrification ntawm 2-azacyclopentadiene, thiab tom qab ntawd ntxiv hydrogenation thiab chlorination cov tshuaj tiv thaiv kom tau txais cov khoom lag luam.
Cov ntaub ntawv kev nyab xeeb:
Tsis txhob sib cuag nrog cov oxidants muaj zog, muaj zog acids, muaj zog alkalis thiab lwm yam khoom kom tsis txhob muaj kev kub ntxhov.
Ua tib zoo saib xyuas kev tiv thaiv thaum siv, thiab hnav cov khoom tiv thaiv tus kheej tsim nyog, xws li hnab looj tes, tsom iav, thiab lwm yam.
Thaum siv lossis khaws cia, khaws 2-hydroxy-3-nitro-5-chloropyridine hauv qhov chaw txias, qhov cua zoo, kom deb ntawm hluav taws kub thiab kub.
