5 5-Dimethyl-1 3-oxazolidine-2 4-dione (CAS # 695-53-4)
| Risk Codes | R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R40 - Cov pov thawj txwv ntawm cov nyhuv carcinogenic R33 - Kev phom sij ntawm cov teebmeem tshwm sim R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S22 - Tsis txhob nqus plua plav. S36 - Hnav khaub ncaws tiv thaiv zoo. S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag. S23 - Tsis txhob ua pa. S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog. S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. |
| WGK Germany | 3 |
| RTECS | PIB 9100000 |
| TSCA | Yog lawm |
| HS Code | 293499 0 |
| Toxicity | LD50 iv hauv nas: 450 mg/kg (Stoughton) |
Taw qhia
Dimethyldione yog ib hom tshuaj muaj npe tshuaj methylbenzophenone. Cov hauv qab no yog kev qhia txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm dimethethone:
Zoo:
- Cov tsos mob: tsis muaj xim lossis lub teeb daj pob tshab kua.
- Solubility: Soluble nyob rau hauv dej, cawv thiab ether solvents.
- Swb: Nrog ib tug tshwj xeeb qab zib aroma.
Siv:
- Dimethyldiketone yog dav siv nyob rau hauv tshuaj synthesis raws li ib tug hnyav, txo tus neeg sawv cev thiab catalyst.
- Nws tuaj yeem siv los ua ib qho tseem ceeb hauv nruab nrab ntawm cov organic synthesis thiab koom nrog kev sib txuas ntawm ntau yam organic tebchaw.
Txoj kev:
- Txoj kev npaj siv feem ntau yog ua rau cov tshuaj benzoic acid nrog sulfuric acid lossis phosphoric acid kom tau benzoyl chloride, thiab tom qab ntawd ua rau cov tshuaj methanol thiab sodium carbonate kom tau txais dimethyldione.
- Muaj ntau txoj hauv kev los npaj dimethyldione, xws li los ntawm chloroformic acid thiab phenylisocyanate cov tshuaj tiv thaiv, los ntawm chloroazobenzene thiab protonated dimethylamine cov tshuaj tiv thaiv, thiab lwm yam.
Cov ntaub ntawv kev nyab xeeb:
- Dimethyldiketone yog ib qho organic compound nrog qee yam toxicity, thiab ntau dhau los yog nqus tau pa tuaj yeem ua rau tib neeg lub cev puas tsuaj.
- Methadiketone yuav tsum muab khaws cia rau hauv lub thawv airtight, kom deb ntawm qhov hluav taws kub thiab oxidants.
- Hnav cov hnab looj tes tiv thaiv thiab tsom iav thaum siv thiab tsis txhob sib cuag nrog daim tawv nqaij lossis qhov muag.
- Cov txheej txheem kev nyab xeeb kev khiav hauj lwm thiab cov txheej txheem yuav tsum tau ua raws li hauv chav kuaj lossis cov txheej txheem tsim khoom.
