Waikawa 4-Hydroxybenzoic CAS 99-96-7
Ko te waikawa 4-Hydroxybenzoic, e mōhiotia ana ko te nipagin ester, e whakamahia nuitia ana i roto i te ranu soya, te tiamu, ngā inu whakahauora, me ētahi atu. He paura tioata kore tae, he paura tioata ma rānei, kāore he kakara, kāore hoki he reka. He pai ake te pānga ārai-waikura i te waikawa benzoic me tōna tote konutai, me te nui o te whakamahinga tata ki te 1/10 o te konutai benzoate me te awhe whakamahinga o te pH 4-8.
| Taonga | Whakatakotoranga |
| Te pūwāhi koropupū | 213.5°C (whakatau tata) |
| Kiato | 1.46 karamu/cm3 |
| Te pūwāhi rewa | 213-217 °C (whakamārama) |
| Pēhanga kohu | 0Pa i te 20℃ |
| ātete | 1.4600 (whakatau tata) |
| Ngā tikanga rokiroki | Penapenahia i raro i te +30°C. |
Ko te waikawa 4-Hydroxybenzoic te nuinga o te wā e whakamahia ana hei rauemi mata taketake mō ngā hua matū pai, ko ngā parabens, e mōhiotia ana ko ngā p-hydroxybenzoic acid esters, kua whakamahia whānuitia hei tiaki i roto i te kai, te rongoā, me ngā mea whakapaipai. E whakamahia whānuitia ana hoki ēnei i roto i te hanga i ngā momo tae, ngā patu harore, ngā kiriata tae, me ngā momo hononga tae wairewa hinu. Ko te polymer hou ātete pāmahana teitei p-hydroxybenzoic acid polyester, he whānuitia ngā whakamahinga, e whakamahia ana hoki hei rauemi mata taketake.
I te nuinga o te wā ka tākaihia ki te 25kg/pahu, ā, ka taea hoki te whakarite i te kete.
Waikawa 4-Hydroxybenzoic CAS 99-96-7
Waikawa 4-Hydroxybenzoic CAS 99-96-7
