Ophthalic acid
Tsarin Tsari
Suna: Ophthalic acid
Wani suna: 2-methyl benzoic acid;O-toluene acid
Tsarin kwayoyin halitta: C8H8O2
Nauyin Kwayoyin: 136.15
Tsarin Lambobi
Lambar CAS: 118-90-1
Saukewa: 204-284-9
Lambar kwanan wata: 29163900
Bayanan Jiki
Bayyanar: farin lu'ulu'u na prismatic ko lu'ulu'u na allura.
Abun ciki:≥99.0% (Liquid chromatography)
Abun narkewa: 103°C
Saukewa: 258-259°C (lit.)
Yawa: 1.062 g/ml a 25°C (lit.)
Fihirisar magana: 1.512
Shafin: 148°C
Solubility: Dan kadan mai narkewa cikin ruwa, mai sauƙin narkewa a cikin ethanol, ether da chloroform.
Hanyar samarwa
1. Samu ta catalytic oxidation na o-xylene.Yin amfani da o-xylene a matsayin albarkatun kasa da cobalt naphthenate a matsayin mai kara kuzari, a zafin jiki na 120 ° C da matsa lamba na 0.245 MPa, o-xylene ya ci gaba da shiga hasumiya na iskar shaka don iskar oxygenation, kuma ruwan oxidation ya shiga cikin hasumiya na littafin Chemicalbook. don maida hankali, crystallization, da centrifugation.Samu samfurin da aka gama.Mahaifiyar barasa tana distilled don dawo da o-xylene da wani ɓangare na o-toluic acid, sannan a fitar da ragowar.Yawan amfanin gona ya kai 74%.Kowane ton na samfur yana cinye kilogiram 1,300 na o-xylene (95%).
2. Hanyar shiri shine cewa o-xylene yana ci gaba da oxidized tare da iska a gaban cobalt naphthenate mai kara kuzari a yanayin zafin jiki na 120-125 ° C da matsa lamba na 196-392 kPa a cikin hasumiya mai oxidation don samun gamawa. samfur.
Amfanin Samfur
Ana amfani da amfani da yawa a cikin haɗin magungunan kashe qwari, magunguna da albarkatun sinadarai.A halin yanzu, shi ne babban albarkatun kasa don samar da maganin ciyawa.Yana amfani da o-methylbenzoic acid shine fungicide pyrrolidone, fenoxystrobin, trifloxystrobin da herbicide benzyl Matsakaicin sulfuron-methyl za a iya amfani da su azaman tsaka-tsakin haɗin gwiwar kwayoyin halitta irin su pesticide phosphoramide, turare, vinyl chloride polymerization initiator launi MBPO, m- mai shirya fim da sauransu.
