4-nitrotoluene; p-nitrotoluene
Cov ntaub ntawv tseem ceeb:
English npe:4-Nitrotoluene.
CAS Nr .: 99-99-0
Cov mis mos molecular: C7H7NO2
Molecular Luj: 137.14
EINECS tus lej: 202-808-0
Tus qauv qauv:
Yam khoom muaj feem: Organic chemical raw khoom; Nitro compounds; Tshuaj tua kab nruab nrab.
Melting point: 52-54 ° C (lit.)
Kub taw tes: 238 ° C (lit.)
Ceev: 1.392 g / mL ntawm 25 ° C (lit.)
Refractive index: n20/D 1.5382
Lub teeb taw tes: 223 ° F
Solubility: insoluble hauv dej, soluble hauv ethanol, ether thiab benzene.
Khoom: Lub teeb daj rhombic hexagonal siv lead ua.
Vapor siab: 5 mm Hg (85 ° C)
| Specification | Unit | Standard |
| Qhov tshwm sim | Yellowish khoom | |
| Cov ntsiab lus tseem ceeb | % | ≥99.0% |
| Moisture | % | ≤0.1 |
Nws yog ib qho tseem ceeb ntawm cov khoom siv raw, feem ntau yog siv los ua ib qho nruab nrab ntawm cov tshuaj tua kab, zas xim, tshuaj, yas thiab hluavtaws fiber ntau auxiliaries. Xws li tshuaj tua kab mob chloromyron, thiab lwm yam, tuaj yeem tsim p-toluidine, p-nitrobenzoic acid, p-nitrotoluene sulfonic acid, 2-chloro-4-nitrotoluene, 2-nitro-4-methylaniline, dinitrotoluene thiab lwm yam.
Txoj kev npaj yog ntxiv cov toluene rau nitrification reactor, txias kom qis dua 25 ℃, ntxiv cov kua qaub sib xyaw (nitric acid 25% ~ 30%, sulfuric acid 55% ~ 58% thiab dej 20% ~ 21%), qhov kub thiab txias. nce, kho qhov kub tsis tshaj 50 ℃, txuas ntxiv do rau 1 ~ 2 teev kom xaus cov tshuaj tiv thaiv, sawv ntsug rau 6h, kev sib cais nitrobenzene, ntxuav, alkali ntxuav, thiab lwm yam. Chemicalbook crude nitrotoluene muaj o-nitrotoluene, p-nitrotoluene thiab m-nitrotoluene. Cov nitrotoluene crude yog distilled hauv lub tshuab nqus tsev, feem ntau ntawm o-nitrotoluene yog sib cais, cov seem seem uas muaj ntau p-nitrotoluene yog sib cais los ntawm lub tshuab nqus tsev distillation, thiab p-nitrotoluene yog tau los ntawm txias thiab crystallization, thiab cov meta-nitrobenzene tau txais. los ntawm distillation tom qab tsub zuj zuj nyob rau hauv niam cawv thaum lub sij hawm sib cais ntawm para.
galvanized nruas 200kg / nruas; Packing raws li cov neeg siv khoom xav tau. Txias thiab qhov cua, kom deb ntawm qhov hluav taws kub, qhov chaw tshav kub, tiv thaiv tshav ntuj ncaj qha, zam lub teeb.
