2 2-Dimethyl-1 3-dioxan-5-one (CAS # 74181-34-3)
| Hazard Cov Cim | Xi-xaj |
| 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. |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag S39 - Hnav qhov muag / ntsej muag tiv thaiv. S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag. |
| UN IDs | Xyoo 1993 |
| HS Code | 29141900 ib |
| Hazard Class | 3 |
| Packing Group | III |
Taw qhia
2,2-dimethyl-1, 3-dioxan-5-one yog cov organic compound nrog cov mis mos C6H10O3. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
2,2-Dimethyl-1,3-dioxan-5-ib yog cov kua tsis muaj xim nrog cov ntxhiab tsw tshwj xeeb ketone. Nws muaj qhov ntom ntom ntawm 0.965 g / mL, qhov kub ntawm 156-157 ° C, thiab qhov kub ntawm 60 ° C. Nws yog soluble hauv ntau cov kuab tshuaj organic xws li ethanol, ethyl acetate thiab dichloromethane.
Siv:
2,2-Dimethyl-1,3-dioxan-5-one yog ib qho nquag siv organic synthesis nruab nrab. Nws tuaj yeem siv los ua tus neeg sawv cev ketonizing, tus neeg sawv cev esterifying thiab condensing tus neeg sawv cev hauv kev sib txuas. Nws tuaj yeem siv rau hauv kev sib txuas ntawm lwm cov organic tebchaw, xws li coatings, resins, dyes, pharmaceuticals thiab zoo tshuaj.
Txoj Kev Npaj:
Txoj kev npaj ntawm 2,2-Dimethyl-1,3-dioxan-5-one tuaj yeem ua tiav los ntawm Uskberg oxidation cov tshuaj tiv thaiv. Tshwj xeeb, 1,3-butanediol yog reacted nrog methyl iodide los tsim 2,2-dimethyl -1,3-dioxane. Tom qab ntawd, 2,2-dimethyl -1,3-dioxane raug rau oxidation cov tshuaj tiv thaiv nyob rau hauv lub xub ntiag ntawm iodine, thiab cov khoom yog 2,2-Dimethyl-1,3-dioxan-5-one.
Cov ntaub ntawv kev nyab xeeb:
