4-Hydroxybenzoic acid(CAS#99-96-7)

Āhuatanga matū:

Tātai rāpoi	C7H6O3
Molar Mass	138.12
Kiato	1,46 g/cm3
Te Whakarewa	214-217 ℃
Piro Pouri	336.2°C i te 760 mmHg
Tohu Kohiko	171.3°C
Wairewa wai	5 g/L (20 ℃)
Wairewa	He iti te wairewa ki te wai, te chloroform, te whakarewa ki te etera, te acetone me te benzene, te whakarewa ki te waihano ahakoa te rahinga, tata korekore ki te waro disulfide. Whakarewa ki nga wahanga 125 o te wai matao.
Kohu Kohu	4.48E-05mmHg i te 25°C
Te ahua	Paura White ki Beige Crystalline
Tikanga Rokiroki	2-8 ℃
Tairongo	Te tairongo ki te marama
Taurangi Refactive	1.4600 (whakatau tata)
MDL	MCD00002547
Āhuatanga ā-tinana, matū hoki	Ko nga ahuatanga o te paura ma Ko te tioata, he kore reka, he hongi, he reka i te wa e mate ana te arero memeha i roto i te wai wera me te waipiro, ether, acetone, moroiti-wairewa i roto i te wai matao, benzene, insoluble i roto i te waro disulfide. Ka rewa ki te 125 nga wahanga o te wai matao
Whakamahi	Ko te nuinga ko nga rauemi mata o nga hua matū pai, parabens (parabens) hei kai, rongoa me nga rongoa whakapaipai, kua whakamahia nuitia, kei te whakamahia whanuitia ki te whakarite i nga momo tae, fungicides, kiriata tae me te momo hinu- Ko nga kaihoko hanga tae wairewa, me etahi atu, me te maha o nga tono o te polymer P-Hydroxybenzoic acid polyester hou hei rauemi mata.

Tukuna he imeera ki a matou

Taipitopito Hua

Tohu Hua

Nga Tohu Whakamate	Xi – Irritant
Waehere Morearea	R36/37/38 – He whakapataritari ki nga kanohi, te punaha manawa me te kiri.
Whakaahuatanga Haumaru	S26 – Mena ka pa ki nga kanohi, horoi tonu ki te nui o te wai me te rapu tohutohu hauora. S37/39 – Kia mau nga karapu tika me te whakamarumaru kanohi/kanohi

4-Hydroxybenzoic acid(CAS#99-96-7)whakataki
Ko te waikawa hydroxybenzoic, e mohiotia ana ko te waikawa p-hydroxybenzoic, he puhui waro.

Ko ona tino taonga e whai ake nei:

Āhuatanga ā-tinana: Ko te waikawa Hydroxybenzoic he karaihe ma, paku kōwhai rānei me te kakara kakara ahurei.

Ngā āhuatanga matū: Ko te waikawa Hydroxybenzoic he paku wairewa ki te wai me te wairewa ki te waipiro. He waikawa carboxylic waikawa ka taea te hanga tote me nga konganuku. Ka taea hoki te tauhohe ki te aldehydes, ki te ketone ranei, ka pa ki te tauhohenga whakamaarama, ka hanga i nga pūhui ether.

Tauhohenga: Ka taea e te waikawa Hydroxybenzoic te whakaheke i te tauhohenga me te kawakore ki te hanga i te tote benzoate. Ka taea e ia te uru ki te tauhohenga esterification i raro i te waikawa catalysis ki te whakaputa i te p-hydroxybenzoate ester. Ko te waikawa Hydroxybenzoic he takawaenga mo nga kaiwhakarite tipu tipu.

Taupānga: Ka taea te whakamahi i te waikawa Hydroxybenzoic ki te whakahiato i nga kaiwhakahaere tipu tipu, te tae, te kakara, me etahi atu matū.

Tōmua: Nga waikawa ngako, pata(CAS#85536-27-0)

Panuku: Merengi Ketone(CAS#28940-11-6)

Tuhia to korero ki konei ka tukuna mai ki a matou