P-Hydroxybenzoic acid (PHBA) Technical Data Sheet
Synonyms Lub Npe: 4-Hydroxybenzoic acid; p-Hydroxybenzoic acid; 4-Carboxyphenol; p-Salicylic acid
CAS: 99-96-7
Cov mis mos molecular: C7H6O3
Molecular Luj: 138.12
Cov ntaub ntawv dav dav:
4-Hydroxybenzoic acid, kuj yog p-hydroxybenzoic acid (PHBA), yog dawb crystalline khoom uas yog me ntsis soluble hauv dej thiab chloroform tab sis ntau soluble hauv cawv thiab acetone. 4-Hydroxybenzoic acid feem ntau hu ua lub hauv paus rau kev npaj ntawm parabens, uas yog siv los ua preservatives nyob rau hauv cov tshuaj pleev ib ce thiab ib co ophthalmic daws. Nws yog isomeric nrog 2-hydroxybenzoic acid, hu ua salicylic acid, precursor rau aspirin, thiab nrog 3-hydroxybenzoic acid.
Specification:
|
Yam khoom |
Specification |
|
Qhov tshwm sim |
Dawb Crystalline hmoov |
|
Purity |
99.0 % Min. Hplc |
|
Melting Point |
213-216 degree |
|
tsw |
Tsis hnov tsw |
|
Solubility |
Ntshiab Thiab Pob tshab |
|
Poob Thaum Qhuav |
0.50% Max. |
|
Xim (Pt-Co) |
40 Max. |
|
Tshauv |
0.15% Max. |
|
Sulfate |
0.05 % Max. |
|
Chloride |
0.02 % Max. |
|
Phenol |
0.10% Max. |
|
Salicylic acid |
0.10% Max. |
Daim ntawv thov:
Cov khoom no tuaj yeem siv ua cov tshuaj tua kab mob, tshuaj pleev xim, tshuaj thiab txhaj tshuaj molding nruab nrab, thiab esterified nrog cawv. Nws tseem yog cov khoom siv tseem ceeb ntawm cov kua siv lead ua kua polymer thiab cov khoom siv raw ntawm cov tshuaj tua kab nruab nrab.
Ntim Thiab Cia
Ntim: 25kgs hnab lossis 750kgs jumbo hnab lossis raws li kev thov.
Cia: Khaws rau hauv qhov chaw txias, cua txias. Nyob deb ntawm hluav taws thiab cua sov. Kev khaws cia yuav tsum khaws cia cais ntawm oxidant. Nruab nrog sib xws ntau yam thiab ntau ntawm cov khoom siv hluav taws xob. Lub chaw cia khoom yuav tsum tau nruab nrog cov khoom siv kho mob thaum muaj xwm ceev thiab cov khoom siv vaj tse tsim nyog.
Cim npe nrov: p-hydroxybenzoic acid (phba) cas :99-96-7, Tuam Tshoj p-hydroxybenzoic acid (phba) cas :99-96-7 manufacturers, lwm tus neeg, Hoobkas
