4-Hydroxybenzoic acid CAS 99-96-7
ʻO 4-Hydroxybenzoic acid, i kapa ʻia ʻo nipagin ester, hoʻohana nui ʻia i ka soy sauce, jam, nā mea inu ʻoluʻolu, a me nā mea ʻē aʻe. ʻOi aku ka hopena anti-corrosion ma mua o ka waikawa benzoic a me kāna paʻakai sodium, me ka nui o ka hoʻohana ʻana ma kahi o 1/10 o ka sodium benzoate a me kahi pae hoʻohana o ka pH 4-8.
| 'ikamu | Hōʻike |
| Lae paila | 213.5°C (manaʻo koʻikoʻi) |
| ʻO ka mānoanoa | 1,46 g/cm3 |
| Lae hehee | 213-217 °C (kukui) |
| Pumi mahu | 0Pa ma 20 ℃ |
| kūʻē | 1.4600 (manaʻo) |
| Nā kūlana mālama | E mālama ʻia ma lalo o +30 ° C. |
Hoʻohana nui ʻia ka 4-Hydroxybenzoic acid ma ke ʻano he kumu kumu no nā huahana kemika maikaʻi, ʻoiai ʻo parabens, i ʻike ʻia he p-hydroxybenzoic acid esters, ua hoʻohana nui ʻia e like me nā preservatives i ka meaʻai, ka lāʻau lapaʻau, a me nā mea hoʻonaninani. Hoʻohana nui ʻia lākou i ka hoʻomākaukau ʻana i nā kala like ʻole, fungicides, kiʻiʻoniʻoni kala, a me nā ʻano hui like ʻole o ka aila. ʻO ka polymer p-hydroxybenzoic acid polyester hou kiʻekiʻe kiʻekiʻe, kahi ākea o nā noi, hoʻohana pū ʻia ma ke ʻano he kumu kumu.
Hoʻopili pinepine ʻia i ka 25kg / pahu, a hiki ke hana ʻia i ka pōʻai maʻamau.
4-Hydroxybenzoic acid CAS 99-96-7
4-Hydroxybenzoic acid CAS 99-96-7
