I-D(-)-I-asidi ye-Tartaric/ I-CAS：526-83-0

Ukusetshenziswa

Isingeniso: Ngenxa yokuthi i-molecule ye-tartaric acid iqukethe ama-athomu amabili e-carbon asymmetric afanayo, inama-isomer amathathu e-optical, okuyi-dextrorotatory tartaric acid [L(+) -tartaric acid], i-levorotatory tartaric acid [D(-) -tartaric acid] kanye ne-racemic tartaric acid (Meso). Inani elilinganayo le-L-tartaric acid kanye ne-D-tartaric acid lixutshwa ukuze kutholakale i-racemic tartaric acid noma i-DL-tartaric acid. I-L-tartaric acid kanye ne-d-tartaric acid ziyi-enantiomers. Yonke i-tartaric acid eyenzeka ngokwemvelo iyi-dextrorotatory. Ayinamakristalu acacile angenambala noma i-white fine to granular crystalline powder. Umkhiqizo we-crystalline uqukethe i-molecule eyodwa yamanzi e-crystalline, awunaphunga, uzinzile emoyeni, unokunambitheka okumuncu, okunomkhawulo womuncu ongu-0.0025%, kanti ukuqina komuncu cishe kuphindwe izikhathi ezingu-1.2 kuya kwezingu-1.3 kunowe-citric acid. Inokunambitheka okuncibilikisayo kancane futhi ikhipha iphunga elifana noshukela othosiwe uma ishiswa. Iphinde ibe nemiphumela yokuchelela kuma-ion ensimbi. I-1g cishe incibilikiswa ku-0.8mL wamanzi (ku-25℃), ku-0.5mL wamanzi abilayo, naku-3mL we-ethanol. I-pH yesisombululo samanzi esingu-0.3% ingu-2.4.

I-tartaric acid iyi-carboxylic acid etholakala ezitshalweni eziningi, njengezithelo zomvini kanye ne-tamarind, futhi ingenye yama-asidi abalulekile e-organic ewayinini. I-tartaric acid, njenge-antioxidant engezwe ekudleni, inganika ukudla ukunambitheka okumuncu. I-tartaric acid ifana ne-citric acid futhi ingasetshenziswa embonini yokudla, njengasekukhiqizweni kweziphuzo. I-tartaric acid, uma isetshenziswa kanye ne-tannin, ingasebenza njenge-mordant yamadayi e-asidi. I-tartaric acid ingaxubana nama-ion ensimbi ahlukahlukene futhi ingasetshenziswa njenge-ejenti yokuhlanza kanye ne-ejenti yokupholisha ezindaweni zensimbi.

I-Tartaric acid, eyaziwa nangokuthi i-2, 3-dihydroxysuccinic acid, i-dihydroxysuccinic acid, kanye ne-gluconic acid, inama-isomer amathathu abonakalayo ngenxa yokuba khona kwama-athomu amabili e-carbon angafani ku-molecule yayo. I-Tartaric acid ihlanganisa i-D-tartaric acid, i-L-tartaric acid, kanye ne-DL-tartaric acid. I-Tartaric acid iyikristalu noma i-prismatic crystal noma i-powder engenambala, ecacile enokunambitheka okumuncu okunamandla kanye nokunambitheka okuncane. Iyancibilika emanzini futhi ikhona kabanzi ezitshalweni ezahlukahlukene zemvelo ngesimo sikasawoti we-potassium noma we-calcium, lapho amagilebhisi enokuqukethwe okuphezulu. I-Tartaric acid ikhiqizwa ngamakristalu aphuzi abekwe phansi kwemiphongolo ngesikhathi sokwenza iwayini, yingakho igama elithi i-tartaric acid. Ubumuncu bayo bucishe buphindwe ka-1.3 kunobe-citric acid. Ukusetshenziswa kwayo kufana nokwe-citric acid. Incibilika kakhulu emanzini, ngakho-ke ifaneleka ekwenzeni iziphuzo ezikhipha amagwebu. Amakristalu e-tartaric acid aqukethe i-molecule eyodwa yamanzi acwebezelayo, awanaphunga, azinzile emoyeni, anokunambitheka okumuncu, anomkhawulo wokubamuncu ongu-0.0025%, kanti ubukhulu bokubamuncu buphindwe ka-1.2 kuya ku-1.3 kune-citric acid. Anephunga elinamandla kancane futhi akhipha iphunga elifana noshukela othosiwe uma eshiswa. Aphinde abe nemiphumela ye-chelating kuma-ion ensimbi. I-1g cishe incibilikiswa ku-0.8mL wamanzi (ku-25℃), i-0.5mL wamanzi abilayo, kanye ne-3mL ye-ethanol. I-pH yesisombululo samanzi esingu-0.3% ingu-2.4. I-Dl-tartaric acid isetshenziswa kabanzi njengesithako sokudla, amaphilisi e-vitamin C effervescent, kanye ne-ejenti yokwenza i-acid (i-choline tartrate) yezidakamizwa ze-alkali eziphilayo, njll. I-Tartaric acid ingakha usawoti we-acid kanye nosawoti ongathathi hlangothi onezisekelo. Isibonelo, yinciphise nge-potassium hydroxide ukuze wakhe i-potassium hydrogen tartrate. Lokhu kokugcina kungacutshungulwa futhi kube yi-potassium antimony tartrate (okungukuthi, * i-tartrate) kanye ne-sodium potassium tartrate. Kungasetshenziswa futhi ukukhiqiza usawoti njenge-sodium hydrogen tartrate, i-sodium tartrate kanye ne-ammonium tartrate. Ngokusho kwe-GB2760-86 yezwe lakithi, i-tartaric acid ingasetshenziswa njenge-acidulant ezithasiselweni zokudla, futhi isetshenziswa eziphuzweni ezibandayo, ama-jam, iziphuzo, i-jelly, ukudla okusemathinini kanye namaswidi. Ngenxa ye-hygroscopicity yayo ephansi kanye nokuqina okuhle, ifaneleka kakhulu kujusi wezithelo kanye neziphuzo eziqinile. Iphinde isetshenziswe njenge-emulsifier yokudla kanye ne-chelating agent, kanye nesithuthukisi se-antioxidant. Izihlanzi zensimbi kanye nama-polishe; Izinto zokusetshenziswa zemithi, ama-mordants, njll. Ivame ukusetshenziswa ihlanganiswe ne-citric acid, i-malic acid, njll. Umkhawulo ekudleni okumnandi u-2% (eJapan) kanye no-4% (e-United States). Izinyathelo zokuqapha zokusebenzisa: Lo mkhiqizo unokunambitheka okumuncu okunamandla futhi unamandla kancane. Uvame ukusetshenziswa uhlanganiswe namanye ama-asidi. Isetshenziswa kakhulu ekulungiseleleni iziphuzo nokunye ukudla okunokunambitheka kwamagilebhisi. Ububanzi bokusetshenziswa kanye nomthamo: Ingasetshenziswa ekudleni okuhlukahlukene ngamanani afanele njengoba kudingeka ekukhiqizeni. Inkomba yokusetshenziswa okusebenzayo: Uma isetshenziselwa amajamu namajeli, kuyalulekwa ukuthi igcine i-pH yomkhiqizo ku-2.8 kuya ku-3.5. Ivame ukusetshenziswa ngokuhlanganiswa ne-citric acid, i-malic acid, njll. Lo mkhiqizo ungasetshenziswa ngamanani afanele kumaswidi nasezintweni ezibhakiwe, njll.

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