P-Hydroxybenzaldehyde
Chigadzirwa zita: 4-Hydroxybenzaldehyde
p-Hydroxybenzaldehyde;
PHBA;
CAS Kwete. 123-08-0
Molecular fomura: C7H6O2
Molecular uremu: 122.1213
Structural Formula:
Kuwandisa: 1.226g / cm3
Zvishandiso:Iyo yakakosha yakanaka chemakemikari chigadzirwa uye yepakati kune organic synthesis, iine kushandiswa kwakakura mumishonga, aromatizer, mishonga yekuuraya zvipuka, electroplating uye emvura kristaro maindasitiri. Muindasitiri yemishonga, inogona kushandiswa kugadzira intermediates yesulfonamides yakadai seyakawanda-sisitimu yekuvhara synergist TMP, ampicillin uye semi-synthesized penicillin (muromo) pamwe nepakati pe d - (-) - p-hydroxy phenyl picramate. Mune aromatizer indasitiri, inonyanya kushandiswa mu raspberry ketone, methyl vanillin, ethyl vanillin, anisic aldehyde uye nitrile aromatizer. Mune indasitiri yezvipembenene, inowanzo shandiswa kugadzira mhando-itsva yezvipembenene, herbicide, o-bromobenzonitrile uye hydroxyl casoron. Mune electroplating indasitiri, inogona kushandiswa senge nyowani-mhando cyanogens-isina electroplating inopenya.
|
Index zita |
Index Kukosha |
||
|
Chitarisiko |
Electron Giredhi |
Chiremba Chiremba |
Zvinonhuwira Giredhi |
|
chena crystalline upfu |
Pale yero kristaro poda |
Pale yero kristaro poda |
|
|
Kuchena:% |
≥99.8 |
≥99.5 |
≥99 |
|
Unyoro:% |
.30.3 |
.30.3 |
.50.5 |
|
Nzvimbo yakanyunguduka: ℃ |
115.5 ~ 118 |
115 ~ 118 |
114.5 ~ 116.5 |
|
Chloride: PPm |
≤50 |
≤50 |
|
|
Heavy simbi: PPm |
≤8 |
≤8 |
|
|
Insoluble% |
.00.05 |
.00.05 |
|
1. Kune akawanda maitiro ekugadzirwa kwep-hydroxybenzaldehyde. Parizvino, iyo yekugadzirwa kwemaindasitiri inonyanya kusanganisira phenol, p-cresol, p-nitrotoluene uye zvimwe zvigadzirwa.
2.Iyo phenol nzira inogona kuve yakakamurwa kuita Reimer Tiemann reaction, gattermann reaction, phenol Trichloroacetaldehyde nzira, phenol glyoxylic acid nzira, phenol formaldehyde nzira, nezvimwe. mutengo.
Maitiro ep-nitrotoluene kugadzira p-hydroxybenzaldehyde inosanganisira matanho matatu: oxidation-kudzikisira, diazotization uye hydrolysis.
3.P-cresol catalytic oxidation maitiro acho ndeyekuisa oxidize p-cresol kune p-hydroxybenzaldehyde nemhepo kana oxygen pasi pechiito chekukonzera.
Iyo chaiyo nzira yekuyerera iri seinotevera: wedzera p-cresol, sodium hydroxide uye methanol mune isina simbi yekumanikidza mudziyo, inomutsa kusvikira yanyungudika zvachose, wedzera cobalt acetate yekuvhara iyo reactor, simudza tembiricha kusvika 55 ℃ uye tanga kuunza oxygen, chengetedza kumanikidza mumudziyo pa1.5MPa uye ita 8-10h, nyatso kudzora okisijeni kuyerera kweyakaitika maitiro, uye isa coil kutonhora system mumudziyo, kana tembiricha ikakwira, bhachi re ngarava ichagoverwa Mvura inotonhora inogona kusunganidzwa Panguva ino, iyo coil inotanga kuunganidzwa nemvura inotonhorera, yakanyatso kudzora huwandu hwese hweoksijeni, uye chengetedza iyo tembiricha iri muhadura ingangoita makumi matanhatu.℃. Pakupera kwekuita, izvo zvinhu zvinoiswa mune yekutanga autoclave, iyo solvent methanol inopwa uye ishandiswazve, uye hydrochloric acid inowedzerwa mushure mekunge mvura yawedzerwa kuti isarting kunze. Iyo yakasimba-yemvura zvinhu inosvinwa necentrifuge, uye yakasimba inowanikwa yakaomeswa muvhenji muovheni panenge makumi matanhatu℃ ye 3-5h, ipapo p-hydroxybenzaldehyde ine zvemukati zvinopfuura 98% inogona kuwanikwa.