4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid (CAS # 82231-52-5)
| Risk Codes | 20/21/22 - Ua phem los ntawm kev nqus pa, tiv nrog daim tawv nqaij thiab yog tias nqos. |
| Kev nyab xeeb piav qhia | S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag. S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog. |
| HS Code | 29331990 ib |
| Hazard Class | IRRITANT |
Taw qhia
Acid (acid) yog cov organic compound. Cov hauv qab no yog kev qhia txog nws qhov xwm txheej, kev siv, kev tsim thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
-Qhov tshwm sim: Daim ntawv ntau yog dawb mus rau dawb crystal hmoov.
-Melting point: Lub melting point ntawm cov compound feem ntau yog nyob rau hauv thaj tsam ntawm 100-105 ° C.
-Solubility: Nws muaj zoo solubility nyob rau hauv ib co polar solvents, xws li ethanol, dimethyl sulfoxide, thiab lwm yam. Tab sis cov solubility nyob rau hauv dej yog tsawg.
Siv:
-acid yog ib qho kev siv nruab nrab ntawm cov organic synthesis. Nws tuaj yeem siv los ua ke ntau yam pyrazole lossis pyrimidine compounds.
-Qhov kev sib xyaw no tseem tuaj yeem siv los ua cov khoom siv raw hauv chaw ua tshuaj.
Txoj Kev Npaj:
-Qhov kev npaj ntawm cov kua qaub tuaj yeem ua tiav los ntawm cov tshuaj tiv thaiv ntau kauj ruam. Ib txoj kev siv hluavtaws feem ntau yog pib los ntawm cov tshuaj pyrazole thiab thaum kawg synthesize cov khoom lag luam los ntawm cov tshuaj tiv thaiv kab mob.
-Txoj kev npaj tshwj xeeb yuav txawv nyob ntawm lub hom phiaj ntawm txoj kev tshawb no, muaj cov ntaub ntawv, thiab lwm yam, thiab koj tuaj yeem xa mus rau cov ntaub ntawv tshawb fawb lossis patent rau cov ncauj lus kom ntxaws.
Cov ntaub ntawv kev nyab xeeb:
-cov kua qaub feem ntau yog ib qho chaw ruaj khov nyob rau hauv kev siv thiab khaws cia. Txawm li cas los xij, zoo li txhua yam tshuaj, nws tseem yuav tsum tau saib xyuas.
-Tej zaum yuav khaus, yog li yuav tsum tau saib xyuas kom tsis txhob muaj kev sib cuag nrog daim tawv nqaij, qhov muag lossis ua pa.
-Thaum siv thiab tuav, ua raws li cov txheej txheem kuaj kom raug thiab kev tiv thaiv tus kheej, thiab xyuas kom muaj qhov cua zoo.
