4-Hydroxybenzoic acid CAS 99-96-7
Ko te waikawa 4-Hydroxybenzoic, e mohiotia ana ko te nipagin ester, te nuinga o te whakamahi i te ranu soy, te tami, nga inu whakamahana, me etahi atu. He pai ake te painga o te waikura ki te waikawa benzoic me tona tote konutai, me te nui o te whakamahinga o te 1/10 o te konutai benzoate me te awhe whakamahinga o te pH 4-8.
| Tūemi | Whakatakotoranga |
| Kohuatanga | 213.5°C (whakatau tata) |
| Kiato | 1,46 g/cm3 |
| Te rewa | 213-217 °C (marama) |
| Te pehanga kohu | 0Pa i te 20 ℃ |
| parenga | 1.4600 (whakatau tata) |
| Nga tikanga rokiroki | Whakaorangia ki raro +30°C. |
Ko te waikawa 4-Hydroxybenzoic te nuinga e whakamahia ana hei rauemi mata mo nga hua matū pai, i te mea ko nga parabens, e mohiotia ana ko te p-hydroxybenzoic acid esters, kua whakamahia nuitia hei tiaki i roto i te kai, te rongoa, me te whakapaipai. Kei te whakamahia nuitia ki te whakarite i nga momo waikano, fungicides, kiriata tae, me nga momo whakakotahitanga tae whakarewa hinu. Ko te polymer p-hydroxybenzoic acid polyester hou-teitei-teitei, he maha nga momo tono, ka whakamahia ano hei rauemi mata.
I te nuinga o te waa ka whakakiia ki te 25kg / pahū, ka taea hoki te mahi mo te kete.
4-Hydroxybenzoic acid CAS 99-96-7
4-Hydroxybenzoic acid CAS 99-96-7
