Waikawa Levulinic/CAS:123-76-2
Whakaahuatanga Poto:
Ingoa Hua: Waikawa Levulinic
CAS: 123-76-2
Momo:ZA-Y
MF:C5H8O3
MW:116.12
HANGANGA:
Whakaahuatanga:
He kawa te reka o te waikawa levulinic, he rite ki te wīski. Tērā pea ka hangaia mā te mahi a te HCL kukū ki te sucrose, te glucose, te fructose rānei; nō reira, e ai ki ngā pūrongo, kei roto i ngā karamere tōna aroaro.
Whakatakotoranga:
| Taonga | Whakatakotoranga |
| Te pūwāhi rewa | 30-33 °C (whakamārama) |
| Te pūwāhi koropupū | 245-246 °C (whakamārama) |
| Kiato | 1.134 g/mL i te 25 °C (i roto i te rama) |
| Pēhanga kohu | 1 mm Hg (102°C) |
| Taupū Whakaata | n20/D 1.439(lit.) |
| Te pāmahana rokiroki | Penapenahia i raro i te +30°C. |
| Te wairewatanga | 675g/rita |
| Puka | Wai i muri i te Rewa |
| Tae | Kōwhai mārama |
Whakamahinga
He hua koiora te waikawa levulinic, ā, ka taea te whakamahi i ōna hua pēnei i te ethyl levulinate me te alkyl levulinate, hei tāpiri wahie.
E whakamahia ana te waikawa levulinic mō te konupūmā levulinate i roto i ngā rongoā, hei esters i roto i ngā whakarewa me ngā plasticizer, me te hanga valerolactone. I te whānui haere o ōna whakamahinga, tera pea ka hangaia mai i ngā para cellulosic. Ko te waikawa Mesitonic, he homolog o te waikawa levulinic, ka whiwhi mā te kohuatia te mesityl oxide ki te KCN.
Ka taea e te hauwai o te waikawa levulinic te whakaputa i ētahi atu matū whai hua. Ka taea te whiwhi i te Valeric-g-lactone, he whakarewa whai hua me te maha o ngā whakamahinga, i roto i ngā hua tino teitei. Ka taea te hauwai i tēnei matū ki te 1,4-pentandiol, ā, i te wā e maroke ana ka puta te 1,3-pentadine (piperylene). E mōhiotia ana ka taea e te Piperylene te whakakotahi ki te papatipu rapa, nō reira he puna rapa hangai (Ghorpade and Hanna 1997).
Ko te waikawa levulinic he matū mua mō te hanga i ngā takawaenga whai hua pēnei i te γ-valerolactone, te ethyl levulinate, te waikawa pentanoic me te 2-methyl-tetrahydrofuran. Mā te whakapūtanga me te whakahāngaitanga o te waikawa levulinic ka hua ake he wahie koiora pea.
Ka taea hoki te whakamahi i roto i:
Te whakarite i te hiato whakakorikori hei hanga i te 5-hydroxymethylfurfural me te furfural.
Te hanganga o te kakara arumoni, fraistone.
Te hanga o ngā hua pyrrolidone mā te amination whakaiti.
Te hanganga katoa o te mycobacterial arabinogalactan.
Tākai
200KG/Pahu, kia rite rānei ki ngā whakaritenga a te kiritaki.
Te pupuri me te rokiroki
Te roa o te oranga: 24 marama mai i te rā i hangaia ai, i roto i te takai taketake kāore anō kia whakatuwheratia, rongoatia ki te wāhi matao, maroke, ā, kāore e taea te ārai i te rā tika, i te wai rānei.
Whare putunga hauhautanga, Whakamaroke pāmahana iti, Wehea mai i ngā waikura me ngā waikawa.
