2 2-Dimethyl-1 3-dioxan-5-one（CAS# 74181-34-3)
| Nā hōʻailona pōʻino | Xi – Hoʻohaunaele |
| Nā Code Risk | R36/37/38 – Hoʻonanea i ka maka, ka ʻōpū hanu a me ka ʻili. R41 – Ka pilikia o ka poino nui i na maka R37/38 – Hoʻonanea i ka ʻōnaehana hanu a me ka ʻili. |
| Ka wehewehe palekana | S26 – Inā pili me nā maka, e holoi koke me ka wai nui a e ʻimi i ka ʻōlelo aʻo kino. S37/39 – E hoʻohana i nā mīkina lima kūpono a me ka pale maka/maka S39 - Hoʻohana i ka pale maka / maka. S24/25 – Hōʻalo i ka pili ʻana me ka ʻili a me nā maka. |
| UN ID | 1993 |
| HS Code | 29141900 |
| Papa Hazard | 3 |
| Hui Pūʻulu | III |
Hoʻolauna
ʻO 2,2-dimethyl-1, 3-dioxan-5-one he mea hoʻohuihui me ke ʻano C6H10O3. Eia ka wehewehe ʻana o kona ʻano, hoʻohana, hoʻomākaukau a me ka ʻike palekana.
ʻAno:
ʻO 2,2-Dimethyl-1,3-dioxan-5-one kahi wai kala ʻole me kahi ʻala ketone kūikawā. He 0.965 g/mL kona mānoanoa, he 156-157°C, a he 60°C. Hiki ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe kūlohelohe e like me ka ethanol, ethyl acetate a me dichloromethane.
E hoʻohana:
ʻO 2,2-Dimethyl-1,3-dioxan-5-one kahi mea maʻamau i hoʻohana ʻia ma waena o ka synthesis organik. Hiki ke hoʻohana ʻia ma ke ʻano he ketonizing agent, esterifying agent a me condensing agent i ka synthesis. Hiki ke hoʻohana ʻia i ka synthesis o nā pūhui organik ʻē aʻe, e like me nā uhi, resins, dyes, pharmaceuticals a me nā kemika maikaʻi.
Kaʻina hoʻomākaukau:
Hiki ke hoʻokō ʻia ke ʻano o ka hoʻomākaukau ʻana o 2,2-Dimethyl-1,3-dioxan-5-one e ka Uskberg oxidation reaction. ʻO keʻano kūikawā, ua hanaʻia ka 1,3-butanediol me ka methyl iodide e hana i ka 2,2-dimethyl -1,3-dioxane. A laila, hoʻokomo ʻia ka 2,2-dimethyl -1,3-dioxane i kahi hopena oxidation i mua o ka iodine, a ʻo ka huahana he 2,2-Dimethyl-1,3-dioxan-5-one.
ʻIke palekana:
