2 3 5-Trichloropyridine (CAS # 16063-70-0)
Risk thiab Safety
| Hazard Cov Cim | Xi-xaj |
| Risk Codes | R52/53 - Ua phem rau cov kab mob hauv dej, tuaj yeem ua rau muaj kev cuam tshuam ntev rau hauv dej hiav txwv. R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S61 - Tsis txhob tso tawm rau ib puag ncig. Xa mus rau cov lus qhia tshwj xeeb / cov ntaub ntawv kev nyab xeeb. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 2 |
| RTECS | UA 0525000 |
| HS Code | 293339 0 |
| Kev Ceeb Toom | Irritant |
2 3 5-Trichloropyridine (CAS # 16063-70-0) Cov ntaub ntawv
| kev taw qhia | 2,3, 5-trichloropyridine yog lub teeb daj daj thiab ib qho tseem ceeb ntawm cov tshuaj zoo nruab nrab. 2,3,5-trichloropyridine reacts nrog alkali hlau hydroxide los npaj 3,5-dichloro-2-pyridine phenol, uas yog ib qho tseem ceeb raw khoom rau synthesis ntawm insecticidal mites thiab herbicide oxaloether. 2,3, 5-trichloropyridine kuj tseem tuaj yeem ua ntxiv fluorinated los ua ke 2, 3-difluoro-5-chloropyridine, uas yog cov khoom siv raw rau kev sib xyaw ntawm cov tshuaj tua tsiaj alkynurate. |
| kev npaj | 60g ntawm methanol tau ntxiv rau 1000mL plaub lub qhov ncauj, 100g 2,3,5,6-tetrachloropyridine thiab 31.7g ntawm hydrazine hydrate tau ntxiv, qhov kub thiab txias tau nce mus rau 60-65 ℃, cov tshuaj tiv thaiv tshav kub tau ua rau li 2 teev, cov tshuaj tiv thaiv tiav, qhov kub thiab txias tau txo qis rau 0-5 ℃, qhov kub thiab txias tau qis rau 1 teev, cov khoom tau lim, thiab cov khoom yog 2,3, 5-trichlor6-hydrazinyl pyridine hydrate tau qhuav kom tau 101.6g ntawm cov khoom dawb nrog 96% tawm los thiab 98.5% cov ntsiab lus. Ntxiv 100 g 2,3,5-trichloro 6-hydrazinyl pyridine hydrate, 50g ntawm 5% sodium hydroxide aqueous tov rau 1000ml ntawm plaub lub qhov ncauj lub raj mis, nce qhov kub ntawm 70-75 ℃, ntxiv 387.6g ntawm 10% sodium hypochlorite aqueous kua dropwise, Khaws qhov kub ntawm 70-75 ℃, hnov mob rau 1 teev, xaus cov tshuaj tiv thaiv, txias rau 5-10 ℃, do rau 1 teev, lim kom tau 2,3, 5-trichloropyridine crude yog distilled nyob rau hauv lub siab txo kom tau cov khoom, uas yog lub teeb daj khoom nrog ib tug yield ntawm 95% thiab cov ntsiab lus ntawm 98%. . |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
