Waikawa dehydroacetic/DA/CAS: 520-45-6
Whakaahuatanga Poto:
Ingoa Hua: Waikawa Dehydroacetic
CAS: 520-45-6
Momo: ZA-Y
MF:C8H8O4
MW:168.15
HANGANGA:
Whakaahuatanga:
Ko te waikawa dehydroacetic he pyrone derivative, e hangaia ana mā te dimerization base-catalyzed o te diketene. E whakamahia ana hei tiaki i roto i ngā hua rongoā, kai me ngā hua whakapaipai.
Mā ngā paerewa tuarua rongoā mō te whakamahinga i roto i te mana whakahaere kounga, ka whakaratohia he huarahi watea, whai hua hoki ki ngā taiwhanga rongoā me ngā kaihanga, hei whakakapi i te whakarite i ngā paerewa mahi ā-whare.
Whakatakotoranga:
| Taonga | Whakatakotoranga |
| Te pūwāhi rewa | 111-113 °C (whakamārama) |
| Te pūwāhi koropupū | 270 °C (whakamārama) |
| Kīanga papatipu | 700kg/m3 |
| Kiato | 1.1816 (whakatau tata) |
| Te wairewatanga | 2 karamu/rita |
| Taupū whakaata | 1.4611 (whakatau tata) |
| Te pāmahana rokiroki | Penapenahia i raro i te +30°C. |
| Puka | Paura Tioata Pai |
| Tae | Kōwhai mārama, kirīmi rānei |
| PH | 4 (2g/l, H2O, 20℃) |
Whakamahinga
E whakamahia ana te waikawa dehydroacetic (DHS) hei whakaū mō ngā hua whakapaipai me ngā hua rongoā nā te mea he kaha patu harore me te patu huakita, hei tāpiri mō ngā whakaū PVC me te hanga rongoā kararehe. Whārangi Raraunga Hua
Ko te Geogard(R) 111a he mea hanga ki te waikawa dehydroacetic (DHA) nō reira e mōhiotia ana e ngā mana whakahaere whakapaipai, wharepaku me te kakara nui o te ao mō te whakamahinga i roto i ngā hua whakapaipai me te tiaki whaiaro.
Ko te Geogard(R) 221 he mea hanga ki te waikawa dehydroacetic (DHA) me te waipiro benzyl, nō reira e mōhiotia ana e ngā mana whakahaere whakapaipai, wharepaku me te kakara nui o te ao mō te whakamahinga i roto i ngā hua whakapaipai me te tiaki whaiaro.
E ono ngā wāhanga mahi tahi o te Geogard(R) 361, ā, e whakaaetia whānuitia ana ēnei e ngā ture ā-ao: te waikawa dehydroacetic (DHA); te waikawa salicylic; te waikawa benzoic; te phenoxyethanol; te waipiro benzyl; me te benzethonium chloride.
harore, patu huakita
He matū tiaki te waikawa dehydroacetic, he iti nei te kaha ki te whakaaweawe. He waikawa ngoikore tēnei e whakamahia ana hei whakangaro harore me ngā huakita i roto i ngā whakapaipai. Ka whakaitihia tōna whai huatanga e te noho mai o ngā mea rauropi. Kāore e whakapataritari, e mate pāwera rānei ina pania ki te kiri.
Ko te Waikawa Dehydroacetic (DHA) he matū tiaki he paura tioata, he wairewa iti iho i te 0.1 karamu i roto i te 100 karamu o te wai i te 25°C. Ka taea e ia te pāngia e ngā tauhohenga matū maha, ā, ka whai hua i roto i ngā mahi maha. E whakamahia ana i te 0.01–0.5% hei aukati i te tipu o ngā moroiti i roto i ngā momo kai. E whakamahia ana mō te paukena tapatapahi, te paukena tihore rānei, me te kore e neke atu i te 65 ppm e toe ana i roto, i runga rānei i te paukena kua oti te whakarite.
Te Tākai me te Tukunga
25KG/Pahu, kia rite rānei ki ngā whakaritenga a te kiritaki.
Nō ngā taonga noa, ā, ka taea te tuku mā te moana me te rangi
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.
