{"id":753,"date":"2023-07-21T11:22:05","date_gmt":"2023-07-21T11:22:05","guid":{"rendered":"https:\/\/chemuza.org\/tr\/potasyum-metabisulfit-k2s2o5\/"},"modified":"2023-07-21T11:22:05","modified_gmt":"2023-07-21T11:22:05","slug":"potasyum-metabisulfit-k2s2o5","status":"publish","type":"post","link":"https:\/\/chemuza.org\/tr\/potasyum-metabisulfit-k2s2o5\/","title":{"rendered":"Potasyum metabis\u00fclfit \u2013 k2s2o5, 16731-55-8"},"content":{"rendered":"

Potasyum piros\u00fclfit olarak da bilinen potasyum metabis\u00fclfit (K2S2O5), \u015farap yap\u0131m\u0131nda ve g\u0131da i\u015flemede yayg\u0131n olarak kullan\u0131lan bir koruyucudur. Bakteri ve maya geli\u015fimini engelleyen k\u00fck\u00fcrt dioksiti serbest b\u0131rakarak \u00e7al\u0131\u015f\u0131r ve b\u00f6ylece \u00fcr\u00fcnlerin raf \u00f6mr\u00fcn\u00fc uzat\u0131r.<\/p>\n

\n\n\n\n\n\n\n\n
IUPAC’\u0131n ad\u0131<\/td>\n Potasyum piros\u00fclfit<\/td>\n<\/tr>\n
Molek\u00fcler form\u00fcl<\/td>\n K2S2O5<\/td>\n<\/tr>\n
CAS numaras\u0131<\/td>\n 16731-55-8<\/td>\n<\/tr>\n
E\u015f anlaml\u0131<\/td>\n Potasyum dis\u00fclfit, piros\u00fclf\u00fcr\u00f6z asit, dipotasyum tuzu, potasyum metabis\u00fclfit<\/td>\n<\/tr>\n
InChI<\/td>\n InChI=1S\/2K.H2O5S2\/c;;1-6(2)7(3,4)5\/h;(H,1,2)(H,3,4,5)\/q2*+1; \/p-2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Potasyum metabis\u00fclfitin \u00f6zellikleri<\/strong><\/h2>\n

Potasyum Metabis\u00fclfit Form\u00fcl\u00fc<\/h3>\n

Potasyum metabis\u00fclfitin kimyasal form\u00fcl\u00fc K2S2O5’tir. Bu, her bir potasyum metabis\u00fclfit molek\u00fcl\u00fcn\u00fcn iki potasyum iyonu, iki k\u00fck\u00fcrt atomu ve be\u015f oksijen atomu i\u00e7erdi\u011fi anlam\u0131na gelir. Form\u00fcl, K2S2O5’in farkl\u0131 reaksiyon ve i\u015flemlerdeki kimyasal \u00f6zelliklerini ve davran\u0131\u015f\u0131n\u0131 belirlemede \u00f6nemlidir.<\/p>\n

Potasyum Metabis\u00fclfit Molar K\u00fctlesi<\/h3>\n

K2S2O5’in molar k\u00fctlesi 222,31 g\/mol’d\u00fcr. Bu, onu olu\u015fturan elementlerin atomik k\u00fctlelerinin eklenmesiyle hesaplan\u0131r: iki potasyum atomu (her biri 39,10 g\/mol), iki k\u00fck\u00fcrt atomu (her biri 32,06 g\/mol) ve be\u015f oksijen atomu (her biri 16,00 g\/mol). . Molar k\u00fctle, belirli bir reaksiyon veya proseste ihtiya\u00e7 duyulan K2S2O5 miktar\u0131n\u0131n belirlenmesinde \u00f6nemlidir.<\/p>\n

Potasyum metabis\u00fclfitin kaynama noktas\u0131<\/h3>\n

K2S2O5’in belirli bir kaynama noktas\u0131 yoktur \u00e7\u00fcnk\u00fc kaynama noktas\u0131na ula\u015fmadan ayr\u0131\u015f\u0131r. Y\u00fcksek s\u0131cakl\u0131klarda K2S2O5 par\u00e7alanarak koruyucu g\u00f6revi g\u00f6ren aktif madde olan k\u00fck\u00fcrt dioksiti a\u00e7\u0131\u011fa \u00e7\u0131kar\u0131r.<\/p>\n

Potasyum metabis\u00fclfit Erime noktas\u0131<\/h3>\n

K2S2O5’in erime noktas\u0131 yakla\u015f\u0131k 190\u00b0C’dir (374\u00b0F). Bu s\u0131cakl\u0131kta kat\u0131 bile\u015fik erir ve berrak bir s\u0131v\u0131ya d\u00f6n\u00fc\u015f\u00fcr. K2S2O5 i\u00e7in uygun ta\u015f\u0131ma ve depolama ko\u015fullar\u0131n\u0131n belirlenmesinde erime noktas\u0131 \u00f6nemlidir.<\/p>\n

Potasyum metabis\u00fclfitin yo\u011funlu\u011fu g\/mL<\/h3>\n

K2S2O5’in yo\u011funlu\u011fu yakla\u015f\u0131k 2,34 g\/mL’dir. Bu, belirli bir K2S2O5 hacminin ayn\u0131 hacimdeki sudan 2,34 kat daha a\u011f\u0131r olaca\u011f\u0131 anlam\u0131na gelir. Belirli bir i\u015flemde kullan\u0131lacak uygun K2S2O5 miktar\u0131n\u0131n belirlenmesinde yo\u011funluk \u00f6nemlidir.<\/p>\n

Potasyum Metabis\u00fclfit Molek\u00fcl A\u011f\u0131rl\u0131\u011f\u0131<\/h3>\n

K2S2O5’in molek\u00fcler a\u011f\u0131rl\u0131\u011f\u0131 222,31 g\/mol’d\u00fcr. Bu, onu olu\u015fturan elementlerin atomik k\u00fctlelerinin eklenmesiyle hesaplan\u0131r: iki potasyum atomu, iki k\u00fck\u00fcrt atomu ve be\u015f oksijen atomu. Molek\u00fcl a\u011f\u0131rl\u0131\u011f\u0131, belirli bir reaksiyon veya i\u015flemde ihtiya\u00e7 duyulan K2S2O5 miktar\u0131n\u0131n belirlenmesinde \u00f6nemlidir. <\/p>\n

\n
\"Potasyum<\/figure>\n<\/div>\n

Potasyum metabis\u00fclfitin yap\u0131s\u0131<\/h3>\n

K2S2O5, iki potasyum iyonu (K+) ve bir piros\u00fclfit iyonundan (S2O5^2-) olu\u015fan molek\u00fcler bir yap\u0131ya sahiptir. Piros\u00fclfit iyonu iki k\u00fck\u00fcrt atomu ve be\u015f oksijen atomundan olu\u015fur. \u0130ki potasyum iyonu, negatif y\u00fckl\u00fc piros\u00fclfit iyonuna \u00e7ekilerek stabil bir iyonik bile\u015fik olu\u015fturur.<\/p>\n

Potasyum metabis\u00fclfitin \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc<\/h3>\n

K2S2O5 su, alkol ve gliserolde \u00e7\u00f6z\u00fcn\u00fcr. Sudaki \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc s\u0131cakl\u0131k ve konsantrasyona ba\u011fl\u0131 olarak de\u011fi\u015fir. Oda s\u0131cakl\u0131\u011f\u0131nda suda \u00e7ok iyi \u00e7\u00f6z\u00fcn\u00fcr ve \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc yakla\u015f\u0131k 70 g\/100 mL’dir. Ancak daha y\u00fcksek konsantrasyonlarda daha az \u00e7\u00f6z\u00fcn\u00fcr hale gelebilir ve \u00e7\u00f6keltiler olu\u015fturabilir.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
D\u0131\u015f g\u00f6r\u00fcn\u00fc\u015f<\/td>\n Beyaz veya soluk sar\u0131 kristal toz<\/td>\n<\/tr>\n
Spesifik yer \u00e7ekimi<\/td>\n 20\u00b0C’de 2,34<\/td>\n<\/tr>\n
Renk<\/td>\n Beyaz ila hafif sar\u0131<\/td>\n<\/tr>\n
Koku<\/td>\n K\u00fck\u00fcrtl\u00fc, baharatl\u0131<\/td>\n<\/tr>\n
Molar k\u00fctle<\/td>\n 222,31 gr\/mol<\/td>\n<\/tr>\n
Yo\u011funluk<\/td>\n 25\u00b0C’de 2,34 g\/mL<\/td>\n<\/tr>\n
F\u00fczyon noktas\u0131<\/td>\n 190-240\u00b0C<\/td>\n<\/tr>\n
Kaynama noktas\u0131<\/td>\n Kaynamadan \u00f6nce par\u00e7alan\u0131r<\/td>\n<\/tr>\n
Fla\u015f noktas\u0131<\/td>\n Uygulanamaz (kat\u0131)<\/td>\n<\/tr>\n
sudaki \u00e7\u00f6z\u00fcn\u00fcrl\u00fck<\/td>\n Suda \u00e7\u00f6z\u00fcnebilir<\/td>\n<\/tr>\n
\u00e7\u00f6z\u00fcn\u00fcrl\u00fck<\/td>\n Etanol ve gliserolde \u00e7\u00f6z\u00fcn\u00fcr, eterde az \u00e7\u00f6z\u00fcn\u00fcr<\/td>\n<\/tr>\n
Buhar bas\u0131nc\u0131<\/td>\n Oda s\u0131cakl\u0131\u011f\u0131nda ihmal edilebilir<\/td>\n<\/tr>\n
Buhar yo\u011funlu\u011fu<\/td>\n Uygulanamaz (kat\u0131)<\/td>\n<\/tr>\n
pKa<\/td>\n 4.34<\/td>\n<\/tr>\n
pH<\/td>\n %10’luk \u00e7\u00f6zeltide 4,5-5,5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Potasyum metabis\u00fclfitin g\u00fcvenli\u011fi ve tehlikeleri<\/strong><\/h2>\n

K2S2O5, do\u011fru \u015fekilde kullan\u0131lmazsa g\u00fcvenlik riskleri olu\u015fturabilir. Solunmas\u0131 halinde cilt tahri\u015fine, g\u00f6z tahri\u015fine ve solunum problemlerine neden olabilir. Maddeyle do\u011frudan temas k\u0131zar\u0131kl\u0131k, ka\u015f\u0131nt\u0131 ve yanma hissine neden olabilir. Ayr\u0131ca yutulmas\u0131 halinde sindirim sorunlar\u0131na da neden olabilir. Madde \u0131s\u0131t\u0131ld\u0131\u011f\u0131nda zehirli k\u00fck\u00fcrt dioksit gaz\u0131 a\u00e7\u0131\u011fa \u00e7\u0131karabilir. Bu nedenle ta\u015f\u0131ma ve depolama s\u0131ras\u0131nda yeterli havaland\u0131rma gereklidir. K2S2O5’i kullan\u0131rken eldiven ve koruyucu g\u00f6zl\u00fck gibi uygun ki\u015fisel koruyucu ekipmanlar\u0131n kullan\u0131lmas\u0131 \u00f6nemlidir. Asitler, metaller ve di\u011fer kimyasallarla reaksiyona girebilece\u011finden uygun depolama da \u00e7ok \u00f6nemlidir.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Tehlike sembolleri<\/td>\n Xi (Rahats\u0131z edici)<\/td>\n<\/tr>\n
G\u00fcvenlik A\u00e7\u0131klamas\u0131<\/td>\n Kab\u0131 s\u0131k\u0131ca kapal\u0131 ve kuru tutun; Yemeyin; Uygun koruyucu k\u0131yafet, eldiven ve g\u00f6z\/y\u00fcz korumas\u0131 kullan\u0131n; G\u00f6zle temas\u0131 halinde derhal bol su ile y\u0131kay\u0131n ve doktora ba\u015fvurun; Yutulmas\u0131 halinde derhal t\u0131bbi yard\u0131m al\u0131n ve kab\u0131 veya etiketi g\u00f6sterin.<\/td>\n<\/tr>\n
BM kimlik numaralar\u0131<\/td>\n BM 2676<\/td>\n<\/tr>\n
HS kodu<\/td>\n 2832.10.00<\/td>\n<\/tr>\n
Tehlike s\u0131n\u0131f\u0131<\/td>\n 8 \u2013 A\u015f\u0131nd\u0131r\u0131c\u0131 maddeler<\/td>\n<\/tr>\n
Paketleme grubu<\/td>\n III<\/td>\n<\/tr>\n
Toksisite<\/td>\n LD50 (s\u0131\u00e7an, a\u011f\u0131zdan) \u2013 2.000 mg\/kg; LC50 (s\u0131\u00e7an, soluma) \u2013 17 ppm\/4 saat<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Potasyum metabis\u00fclfitin sentezi i\u00e7in y\u00f6ntemler<\/strong><\/h2>\n

K2S2O5 farkl\u0131 y\u00f6ntemlerle sentezlenebilir.<\/p>\n

Yayg\u0131n bir y\u00f6ntem, potasyum hidroksit<\/a> ile k\u00fck\u00fcrt dioksit aras\u0131ndaki reaksiyonu i\u00e7erir. Reaksiyon kab\u0131 iki kimyasal\u0131 birle\u015ftirir ve \u0131s\u0131t\u0131r. Ortaya \u00e7\u0131kan gaz sudan ge\u00e7erek potasyum s\u00fclfit<\/a> \u00fcretir. Hidrojen peroksit potasyum s\u00fclfiti oksitleyerek potasyum s\u00fclfat olu\u015fturur. K\u00fck\u00fcrt dioksit potasyum s\u00fclfatla reaksiyona girerek K2S2O5 \u00fcretir.<\/p>\n

Ba\u015fka bir y\u00f6ntem, potasyum karbonat<\/a> ve k\u00fck\u00fcrt dioksitin reaksiyonunu i\u00e7erir. Reaksiyon kab\u0131 iki kimyasal\u0131 kar\u0131\u015ft\u0131r\u0131r ve \u0131s\u0131t\u0131r. Kar\u0131\u015f\u0131m, bir potasyum s\u00fclfit<\/a> \u00e7\u00f6zeltisinden ge\u00e7erek potasyum bis\u00fclfit olu\u015fturan bir gaz \u00fcretir. Hidrojen peroksit, potasyum bis\u00fclfiti oksitleyerek potasyum s\u00fclfat olu\u015fturur. K\u00fck\u00fcrt dioksit potasyum s\u00fclfatla reaksiyona girerek K2S2O5 \u00fcretir.<\/p>\n

Potasyum Metabis\u00fclfitin Kullan\u0131m Alanlar\u0131<\/strong><\/h2>\n

K2S2O5’in \u00e7e\u015fitli end\u00fcstrilerde geni\u015f bir uygulama yelpazesi vard\u0131r. Baz\u0131 yayg\u0131n kullan\u0131mlar \u015funlar\u0131 i\u00e7erir:<\/p>\n