2-Methoxy-5-nitro-4-picolin (CAS # 6635-90-1)
| 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. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag S39 - Hnav qhov muag / ntsej muag tiv thaiv. |
| WGK Germany | 3 |
| Hazard Class | IRRITANT |
Taw qhia
Nws yog ib qho organic compound nrog cov tshuaj formula C8H9NO3. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
-Zoo: Nws yog xim tsis muaj xim rau lub teeb daj crystalline khoom.
-Solubility: Nws yog yuav luag insoluble nyob rau hauv dej, tab sis muaj zoo solubility nyob rau hauv cov organic solvents xws li ethanol thiab dimethylformamide.
- Melting point: Melting point yog hais txog 72-75 degrees Celsius.
Siv:
-Chemical synthesis: Nws yog ib qho kev sib xyaw nruab nrab uas siv tau los ua ke rau lwm cov organic sib txuas.
- Kev Tshawb Fawb: Nws tuaj yeem siv rau kev sib xyaw ua ke ntawm cov organic thiab lwm yam kev tshawb fawb hauv chav kuaj.
Txoj Kev Npaj:
Synthesis tuaj yeem ua tiav los ntawm cov kauj ruam hauv qab no:
1. Ua ntej, 2-methyloxy-5-nitropyridine yog tau los ntawm reacting 2-methyloxy-5-nitropyridine nrog nitric acid.
2. Tom qab ntawd ua rau 2-methoxy-5-nitropyridine nrog methylating reagent (xws li methyl sodium iodide) kom tau txais cov khoom kawg.
Cov ntaub ntawv kev nyab xeeb:
Cov ntaub ntawv kev nyab xeeb yog txwv, tab sis nws yuav ua rau tib neeg thiab ib puag ncig. Thaum siv, yuav tsum ua raws li kev sim ua kom tsim nyog, thiab ua raws li kev tiv thaiv tus kheej tsim nyog, xws li hnav tsom iav thiab hnab looj tes. Tsis tas li ntawd, qhov sib xyaw yuav tsum tau muab khaws cia thiab pov tseg kom zoo kom tsis txhob muaj kev sib kis ntawm ib puag ncig.
