3-Bromo-2-thiophenecarboxylic acid (CAS # 7311-64-0)
| Hazard Cov Cim | Xi-xaj |
| Risk Codes | R43 - Tej zaum yuav ua rau mob ntawm daim tawv nqaij 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. 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. |
| WGK Germany | 3 |
| HS Code | 293499 0 |
| Hazard Class | IRRITANT |
Taw qhia
Acid yog cov organic compound nrog cov tshuaj formula C6H4BrO2S.
Xwm:
-Cov tsos mob: acid yog dawb mus rau yellowish khoom.
-Solubility: Soluble nyob rau hauv chloroform, acetone thiab chlorinated methane.
- Melting point: txog 116-118 ° C.
Siv:
-must acid feem ntau yog siv los ua ib qho tseem ceeb nruab nrab ntawm cov organic synthesis.
-Nws tuaj yeem siv los tsim cov organic tebchaw uas muaj cov qauv thiophene nplhaib.
Txoj Kev Npaj: Muaj ntau ntau txoj kev hluavtaws ntawm
-anacid. Ib txoj hauv kev uas feem ntau siv yog siv bromoacetic acid ua raw khoom, hnov mob nrog thiophene nyob rau hauv alkaline tej yam kev mob los tsim 3-bromothiophene, thiab ces nqa tawm carboxylic cov tshuaj tiv thaiv nyob rau hauv acidic tej yam kev mob.
Cov ntaub ntawv kev nyab xeeb:
-cov kua qaub yuav ua rau lub qhov muag, tawv nqaij thiab ua pa.
-Thaum siv, yuav tsum tau saib xyuas kom tsis txhob nqus cov plua plav lossis kev sib cuag ntawm daim tawv nqaij thiab qhov muag.
- Hnav cov cuab yeej tiv thaiv tsim nyog xws li cov hnab looj tes ua haujlwm, tsom iav thiab lub ntsej muag tiv thaiv ua ntej ua haujlwm.
-Thaum ntsib daim tawv nqaij lossis qhov muag, yaug tam sim ntawd nrog dej kom ntau thiab nrhiav kev kho mob. Kev ntsuas kev pab thawj zaug tsim nyog yuav tsum tau muab yog tias tsim nyog.
