Ophthalic Acid
Ilana Ilana
Orukọ: Ophthalic acid
Orukọ miiran: 2-methyl benzoic acid;O-toluene acid
Ilana molikula: C8H8O2
Iwọn molikula: 136.15
Nọmba System
Nọmba CAS: 118-90-1
EINECS: 204-284-9
HS koodu: 29163900
Data Ti ara
Irisi: awọn kirisita prismatic flammable funfun tabi awọn kirisita abẹrẹ.
Akoonu:≥99.0% (kiromatografi olomi)
Ojuami yo: 103°C
farabale ojuami: 258-259°C (tan.)
iwuwo: 1.062 g/ml ni 25°C (tan.)
Atọka itọka: 1.512
Filasi ojuami: 148°C
Solubility: Die-die tiotuka ninu omi, ni irọrun tiotuka ni ethanol, ether ati chloroform.
Ọna iṣelọpọ
1. Ti gba nipasẹ ifoyina katalitiki ti o-xylene.Lilo o-xylene bi ohun elo aise ati koluboti naphthenate bi ayase, ni iwọn otutu ti 120 ° C ati titẹ 0.245 MPa, o-xylene nigbagbogbo wọ inu ile-iṣọ ifoyina fun ifoyina afẹfẹ, ati omi ifoyina wọ inu ile-iṣọ yiyọ iwe Kemikali fun ifọkansi, crystallization, ati centrifugation.Gba ọja ti o pari.Oti iya ti wa ni distilled lati gba pada o-xylene ati apakan ti o-toluic acid, ati ki o si tu awọn iyokù.Ikore jẹ 74%.Tọọnu ọja kọọkan n gba 1,300 kg ti o-xylene (95%).
2. Ọna igbaradi ni pe o-xylene ti wa ni oxidized nigbagbogbo pẹlu afẹfẹ ni iwaju ayase naphthenate cobalt ni iwọn otutu ifa ti 120-125 ° C ati titẹ 196-392 kPa ni ile-iṣọ oxidation lati gba ipari ti pari. ọja.
Lilo ọja
Awọn lilo jẹ lilo ni pataki ni iṣelọpọ ti awọn ipakokoropaeku, awọn oogun ati awọn ohun elo aise kemikali Organic.Ni lọwọlọwọ, o jẹ ohun elo aise akọkọ fun iṣelọpọ ti awọn herbicides.Nlo o-methylbenzoic acid ni fungicide pyrrolidone, fenoxystrobin, trifloxystrobin ati herbicide benzyl Awọn agbedemeji ti sulfuron-methyl le ṣee lo bi awọn agbedemeji iṣelọpọ Organic gẹgẹbi pesticide bactericide phosphoramide, lofinda, vinyl chloride polymerization initiator MBPO, m-book Olùgbéejáde fiimu ati bẹbẹ lọ.
