I-Tetraethylenepentamine, ekwabizwa ngokuba yi-tritetraethylenediamine, efinyeziweyo njenge-TEPA, lulwelo lwe-viscous olutyheli okanye olu-orenji. Inyibilika ngokulula emanzini, i-ethanol kunye nezona zinyibilikilki zendalo, ezinganyibilikiyo kwi-benzene ne-ether.Ifunxa ngokulula amanzi kunye nekharbon diokside emoyeni. Ialkaline. Ifunyaniswa nge-thermal amination kunye ne-ammonolysis reaction phakathi kwe-dichloroethane kunye ne-ammonia, ingathathi hlangothi nge-alkali kwaye emva koko i-distilling phantsi koxinzelelo olucuthiweyo. Isetyenziswe njengesisombululo segesi se-chromatography yokugcinwa okukhethiweyo kunye ne-Chemicalbook yokwahlulwa kotywala, i-amines, i-pyridine, i-quinoline, i-piperazine, i-thiols kunye namanzi. Isetyenziswa kwi-anion exchange resins, izongezo zeoyile yokuthambisa, izongezo zeoyile yamafutha, kwaye zikwasetyenziswa njengee-epoxy resin zokunyanga iiarhente, irabha vulcanization accelerators, njl.

Injongo

:I-Tetraethylene pentamine ingasetyenziselwa i-titration eyinkimbinkimbi yobhedu, i-zinc kunye ne-nickel ngendlela yokuphela kwangoku, i-saponification yezinto ezi-acidic, i-rubber yokwenziwa kunye nokuhlanjululwa kwegesi ye-resin kunye ne-agent ye-dehydration. Ikwasetyenziswa njengezongezo, iiarhente zokunyanga, ii-accelerators, njl.

Indlela yokuvelisa:

Le mveliso yimveliso edibeneyo ye-ethylenediamine, i-diethylenetriamine, i-triethylenetetramine, kunye ne-polyethylenepolyamine. Ngemigaqo yemveliso kunye nokusebenza, nceda ubhekisele kwi-ethylenediamine. Nangona kunjalo, iqondo lobushushu le-ammonolysis reaction kufuneka libe yi-160 ukuya kwi-250 ° C, kwaye uxinzelelo kufuneka lube ngaphezu kwe-4.0MPa. Distill imveliso ye-polyamine ekrwada phantsi koxinzelelo oluncitshisiweyo, qokelela amaqhezu kwi-160-210 ° C phantsi koxinzelelo lwe-1.3kPa, kwaye ufumane imveliso egqityiweyo I-Chemicalbook ye-tetraethylpentamine emva kokupholisa. Indlela yokucoca: I-Dehydrate nge-metallic sodium okanye i-anhydrous calcium sulfate kwaye emva koko iqhekezwe phantsi koxinzelelo oluncitshisiweyo. Ungakwazi nokunyibilikisa i-150g ye-tetraethylenepentamine kwi-300mL ye-95% ye-ethanol, kwaye ngokuthe ngcembe wehle kwi-180mL ye-hydrochloric acid egxininisiweyo ngelixa upholisa, ukugcina ubushushu bungaphantsi kwe-20 ° C. Hlunga i-precipitate emhlophe, uyibuyisele kwakhona kathathu ngomxube we-ethanol kunye namanzi, hlamba nge-ether, kwaye wome phantsi kwe-vacuum ukufumana i-tetraethylenepentamine hydrochloride ecocekileyo.

indalo

Inombolo yeCAS 112-57-2

Ifomula yemolekyuli C8H23N5

Ubunzima bemolekyuli 189.3

I-EINECS No. 203-986-2

Indawo yokunyibilika -40°C (lit.)

Iqondo lokubila lika 340°C

Uxinaniso 0.998g/mL ku-25°C (lit.)

Uxinzelelo lomphunga 6.53 (vsair)

Isalathiso se-refractive n20/D1.505 (isibane.)

Indawo edanyazayo yi-365°F

Iimeko zokugcina Gcina ngaphantsi + 30 °

Iinkcukacha zoqhakamshelwano

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