Tom ntej: 2-HYDROXY-3-METHYL-5-NITROPYRIDINE CAS # 21901-34-8
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag R37/38 - Kab mob ua pa thiab tawv nqaij. R22 - Ua phem yog tias nqos |
| Kev nyab xeeb piav qhia | 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. S36 - Hnav khaub ncaws tiv thaiv zoo. |
| UN IDs | 2811 ib |
| WGK Germany | 3 |
| HS Code | 293339 0 |
| Packing Group | III |
Taw qhia
Nws yog ib qho organic compound nrog cov tshuaj formula C7H7N2O3. Cov hauv qab no yog cov lus piav qhia ntawm cov khoom, kev siv, kev npaj thiab kev nyab xeeb cov ntaub ntawv ntawm lub compound:
Xwm:
-Zoo: Nws yog daj crystalline hmoov los yog hmoov.
-Solubility: Nws yog yuav luag insoluble nyob rau hauv dej thiab yooj yim soluble nyob rau hauv organic solvents xws li ethanol, chloroform thiab dimethyl sulfoxide.
- Melting point: Nws melting point yog hais txog 135-137 degrees Celsius.
-Chemical zog: Nws yog ib qho muaj nitrogen-muaj cov tshuaj tsw qab nrog qee yam tshuaj tiv thaiv kev ua haujlwm.
Siv:
-Nws tuaj yeem siv los ua qhov nruab nrab rau kev sib txuas ntawm lwm cov organic tebchaw.
-Nws tuaj yeem siv los ua cov khoom siv raw rau tshuaj tua kab thiab tshuaj tua kab hauv kev ua liaj ua teb.
Txoj kev:
- tuaj yeem npaj los ntawm reacting 2-methylpyridine nrog nitric acid. Cov kauj ruam tshwj xeeb yog raws li nram no: dissolving 2-methylpyridine hauv ethanol, ntxiv concentrated nitric acid, thiab tau txais cov khoom los ntawm crystallization tom qab cov tshuaj tiv thaiv.
Cov ntaub ntawv kev nyab xeeb:
-Qhov txaus ntshai heev hauv kev sib cuag nrog daim tawv nqaij, nqus pa lossis tom qab noj.
-Tsis txhob sib cuag daim tawv nqaij thiab nqus pa thaum sib cuag. Hnav looj tsom iav dub thiab hnab looj tes yog tias tsim nyog.
-Saib cov txheej txheem kev ua haujlwm nyab xeeb thaum tuav thiab khaws cia thiab kaw kom zoo.
-yog tias tsim nyog, xa mus rau Chemical Safety Data Sheet (MSDS) kom paub meej ntxiv txog kev nyab xeeb.
