4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid（CAS# 82231-52-5)
| Nā Code Risk | 20/21/22 – He pōʻino ma ka inhalation, pili me ka ʻili a inā ale ʻia. |
| Ka wehewehe palekana | S24/25 – Hōʻalo i ka pili ʻana me ka ʻili a me nā maka. S36/37 – E hoʻohana i nā lole pale kūpono a me nā mīkina lima. |
| HS Code | 29331990 |
| Papa Hazard | HOOLAHA |
Hoʻolauna
ʻO ka ʻakika (acid) he mea hoʻohuihui. ʻO kēia ka hoʻolauna ʻana i kona ʻano, hoʻohana, hana a me ka ʻike palekana:
ʻAno:
-Ke ʻano: ʻO ke ʻano maʻamau he keʻokeʻo i ka pauka aniani keʻokeʻo.
-Ka helu hoʻoheheʻe: ʻO ka helu hoʻoheheʻe o ka hui ma ke ʻano he 100-105 ° C.
-Solubility: Loaʻa ka solubility maikaʻi i kekahi mau mea hoʻoheheʻe polar, e like me ka ethanol, dimethyl sulfoxide, a me nā mea ʻē aʻe.
E hoʻohana:
-ʻo ka acid he mea maʻamau i hoʻohana ʻia ma ke kahua o ka synthesis organik. Hiki ke hoʻohana ʻia e synthesize i nā ʻano pyrazole a i ʻole pyrimidine pūhui.
-Hiki ke hoʻohana ʻia kēia pūhui ma ke ʻano he mea maka i ka māla lāʻau.
Kaʻina hoʻomākaukau:
- Hiki ke hoʻokō ʻia ka hoʻomākaukau ʻana o ka waikawa ma o ka hopena multi-step. ʻO ke ʻano hana synthetic maʻamau ka hoʻomaka ʻana mai ka waiwai pyrazole a hope synthesize i ka huahana i manaʻo ʻia ma o ke ʻano o nā hopena kemika.
- Hiki ke ʻokoʻa ke ʻano hoʻomākaukau kūikawā ma muli o ke kumu o ke aʻo ʻana, ka loaʻa ʻana o ka ʻikepili, a me nā mea ʻē aʻe, a hiki iā ʻoe ke kuhikuhi i ka palapala ʻepekema kūpono a i ʻole palapala patent no ka ʻike kikoʻī.
ʻIke palekana:
-ʻo ka waika ka mea maʻamau he pūhui paʻa ma lalo o ka hoʻohana pono a me ka mālama ʻana. Eia nō naʻe, e like me nā kemika, pono e mālama ʻia me ka mālama.
-He mea hoʻonāukiuki paha, no laila pono e mālama ʻia e pale aku i ka pili ʻana me ka ʻili, nā maka a i ʻole ka ʻōpū hanu.
-I ka hoʻohana ʻana a me ka lawelawe ʻana, e hahai i nā kaʻina hana hoʻokolohua kūpono a me nā hana pale pilikino, a e hōʻoia i nā kūlana ventilation kūpono.
