Ophthalic Acid
Hui Pū ʻIa
Ka inoa: Ophthalic acid
ʻO kekahi inoa: 2-methyl benzoic acid;ʻO-toluene acid
ʻAno molekole: C8H8O2
Kaumaha molekula: 136.15
Pūnaehana helu
Helu CAS: 118-90-1
EINECS: 204-284-9
Helu HS: 29163900
ʻIkepili kino
ʻO ke ʻano: nā kristal prismatic keʻokeʻo a i ʻole nā kilika nila.
maʻiʻo:≥99.0% (ka chromatography wai)
Wehe hehee: 103°C
Puni paila: 258-259°C (kumu.)
Māmā: 1.062 g/mL ma 25°C (kumu.)
Hōʻike hoʻohālikelike: 1.512
Kuhikuhi uila: 148°C
Hoʻoheheʻe: Hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻoheheʻe ʻia i ka ethanol, etera a me ka chloroform.
Hana Hana
1. Loaʻa ʻia e ka catalytic oxidation o ka o-xylene.Ke hoʻohana nei i ka o-xylene ma ke ʻano he mea maka a me ka cobalt naphthenate ma ke ʻano he catalyst, ma kahi mahana o 120 ° C a me kahi kaomi o 0.245 MPa, komo mau ka o-xylene i ka hale kiaʻi hoʻomake no ka hoʻoheheʻe ʻana i ka ea, a komo ka wai hoʻoheheʻe i ka hale kiaʻi wehe ʻia ʻo Chemicalbook. no ka noʻonoʻo, crystallization, a me ka centrifugation.E kiʻi i ka huahana i hoʻopau ʻia.Hoʻopili ʻia ka waiʻona makuahine e hoʻihoʻi hou i ka o-xylene a me kahi ʻāpana o ka o-toluic acid, a laila hoʻokuʻu i ke koena.ʻO 74% ka hua.Hoʻopau kēlā me kēia tona o ka huahana i 1,300 kg o ka o-xylene (95%).
2. ʻO ke ʻano o ka hoʻomākaukau ʻana, ʻo ia ka hoʻomaʻamaʻa mau ʻana o ka o-xylene me ka ea ma ke alo o ka cobalt naphthenate catalyst ma kahi mahana hopena o 120-125 ° C a me kahi kaomi o 196-392 kPa i loko o kahi hale kiaʻi hoʻoheheʻe e loaʻa ai ka pau. huahana.
Hoohana Huahana
Hoʻohana nui ʻia ka hoʻohana ʻana i ka synthesis o nā pesticides, nā lāʻau lapaʻau a me nā mea kūlohelohe kūlohelohe.I kēia manawa, ʻo ia ka mea nui no ka hana ʻana i nā herbicides.Hoʻohana i ka o-methylbenzoic acid ka fungicide pyrrolidone, fenoxystrobin, trifloxystrobin a me ka herbicide benzyl Hiki ke hoʻohana ʻia nā mea waena o ka sulfuron-methyl e like me nā mea hoʻohuihui organik e like me ka pesticide bactericide phosphoramide, mea ʻala, vinyl chloride polymerization initiator MBPO, colorbook m-cresol. mea hoʻomohala kiʻiʻoniʻoni a pēlā aku.