Magaca alaabta: 4-Hydroxybenzaldehyde

p-Hydroxybenzaldehyde;

PHBA;

CAS Maya .: 123-08-0

Caanaha 'Molecular formula' C7H6O2

Miisaanka kelli: 122.1213

Qaaciddada qaabdhismeedka:

Cufnaanta: 1.226g / cm3

Isticmaala:Waa waxsoosaar kiimiko ah oo ganaax ah iyo mid dhexdhexaad u ah isku-dhafka organic, iyadoo si ballaaran loogu isticmaalo dawooyinka, aromatizer, sunta cayayaanka, koronto-dhalinta iyo warshadaha dareeraha dareeraha ah. Warshadaha dawooyinka, waxaa loo isticmaali karaa in lagu soo saaro iskudhafka dhexdhexaadka ah ee sulfonamides sida isuduwaha baahsan ee istiraatiijiga ah ee TMP, ampicillin iyo penicillin semi-synthesized (afka) iyo sidoo kale dhexdhexaad ah d - (-) - p-hydroxy phenyl picramate. Warshadaha udugga, waxaa badanaa loo isticmaalaa ketone raspberry, methyl vanillin, ethyl vanillin, anisic aldehyde iyo nitrile aromatizer. Warshadaha sunta cayayaanka, badanaa waxaa loo isticmaalaa in lagu soo saaro nooc cusub oo ah sunta cayayaanka, herbicide, o-bromobenzonitrile iyo hydroxyl casoron. In warshadaha electroplating, waxaa loo isticmaali karaa sida nooc cusub oo dhalaalaya electroplating free-cyanogens.

1.Waxaa jira habab badan oo loogu talagalay soosaarka p-hydroxybenzaldehyde. Waqtigan xaadirka ah, wax soo saarka warshadaha inta badan waxaa ka mid ah phenol, p-cresol, p-nitrotoluene iyo waxyaabo kale oo ceeriin ah.

Habka phenol waxaa loo qaybin karaa falcelinta Reimer Tiemann, falcelinta gattermann, wadada phenol Trichloroacetaldehyde, wadada phenol glyoxylic acid, phenol formaldehyde route, iwm. kharashka.
Nidaamka p-nitrotoluene si loo soo saaro p-hydroxybenzaldehyde waxaa ka mid ah seddex tallaabo: hoos u dhigidda oksidation, diazotization iyo hydrolysis.

3.P-cresol qalliinka qallajinta ah geeddi-socodka waa in si toos ah loogu okseeyo p-cresol-ka p-hydroxybenzaldehyde oo leh hawo ama oksijiin marka la eego ficil-celinta.

Habka socodka gaarka ah waa sida soo socota: kudar p-cresol, sodium hydroxide iyo methanol weelka cadaadiska birta birta ah, walaaq ilaa inta uu gebi ahaanba kala baxayo, ku dar cobalt acetate si loo xiro falcelinta, kor u qaad heerkulka ilaa 55 ℃ oo bilow inaad soo bandhigto ogsijiinta, ku hay cadaadiska markabka 1.5MPa oo jawaab ka bixi 8-10h, si adag u xakamee heerka oksijiinta ee habka falcelinta, oo ku rakibo nidaamka qaboojinta gariiradda markabka, marka heerkulku kaco, jaakadda markabka waa la siinayaa Biyaha qaboojinta ayaa lagu xidhi karaa. Waqtigaan, cirifku wuxuu bilaabmayaa inuu ku xirnaado biyo qaboojin ah, si adag u xakameeyo wadarta oksijiinta, oo heerkulka ku jira kuleylka ku hay qiyaastii 60℃. Dhamaadka falcelinta, maaddada waxaa la gelinayaa is-goyska aasaasiga ah, maadada 'methanol' ee dareeraha waa la uumiyey oo dib loo warshadeeyay, waxaana lagu darayaa aashitada hydrochloric ka dib markii biyo lagu daro cusbada. Qalabka adag ee dareeraha ah waxaa lagu sifeeyaa centrifuge, midka adag ee la helaa waxaa lagu qalajiyaa foornada faakiyuumka qiyaastii 60℃ loogu talagalay 3-5h, ka dibna p-hydroxybenzaldehyde oo leh waxyaabo ka badan 98% ayaa la heli karaa.