4-Methoxyphenylhydrazine hydrochloride (CAS # 19501-58-7)
Risk thiab Safety
| Risk Codes | R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog. S36 - Hnav khaub ncaws tiv thaiv zoo. S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. |
| UN IDs | 2811 ib |
| WGK Germany | 3 |
| HS Code | 29280090 ib |
| Kev Ceeb Toom | Irritant/Homful |
| Hazard Class | TSIS TXAUS SIAB, Cia txias |
| Packing Group | III |
4-Methoxyphenylhydrazine hydrochloride (CAS # 19501-58-7) Cov ntaub ntawv
| Siv | 4-methoxyphenylhydrazine hydrochloride yog ib qho nruab nrab, feem ntau yog siv los tsim cov phenylhydrazine tebchaw, thiab tseem tuaj yeem siv los tsim lwm yam khoom siv tshuaj, xws li 4-nitroindole thiab apixaban. Siv rau dyes thiab kws tshuaj intermediates |
| Kev npaj | 4-methoxyphenylhydrazine hydrochloride tuaj yeem npaj los ntawm aniline los ntawm cov tshuaj tiv thaiv diazotization. Noj aniline, hydrochloric acid thiab sodium nitrite, molar ratio ntawm lawv yog 1: 3.2: 1.0, ua ntej ntxiv hydrochloric acid, ces ntxiv ammonium nitrite ntawm 5 ℃, thiab react ntawm 0 ~ 20 ℃ rau 40 feeb los tsim chlorinated diazbenzene; Raws li cov molar ratio ntawm aniline mus rau 1: 3.5: 2.5, ammonium sulfite thiab hydrochloric acid yog ntxiv, thiab txo, hydrolysis thiab acidification yog nqa tawm nyob rau hauv lub txo hwj chim, lub sij hawm txo yog 60 ~ 70 feeb, thiab cov hydrolysis thiab acidification. lub sijhawm yog 50 feeb. Ua ntej, ammonium sulfite reacts nrog ntau tshaj hydrochloric acid los tsim ammonium bisulfite, ammonium bisulfite, ammonium sulfite reacts nrog chlorinated dizobenzene rau tsim phenylhydrazine disulfonate, thiab tom qab ntawd reacts nrog hydrochloric acid rau hydrolysis thiab acid tsom xam cov tshuaj tiv thaiv, thiab tom qab spin-drying, 4- methoxyphenylhydrazine hydrochloride yog npaj. |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
