{"id":705,"date":"2023-07-21T18:42:54","date_gmt":"2023-07-21T18:42:54","guid":{"rendered":"https:\/\/chemuza.org\/tr\/2-buten-ch3chchch3\/"},"modified":"2023-07-21T18:42:54","modified_gmt":"2023-07-21T18:42:54","slug":"2-buten-ch3chchch3","status":"publish","type":"post","link":"https:\/\/chemuza.org\/tr\/2-buten-ch3chchch3\/","title":{"rendered":"2-buten \u2013 ch3chchch3, 624-64-6"},"content":{"rendered":"

2-Buten (CH3CHCHCH3), \u00e7e\u015fitli kimyasallar\u0131n \u00fcretiminde kullan\u0131lan renksiz bir gazd\u0131r. Yan\u0131c\u0131d\u0131r ve hafif bir koku yayar. 2-Buten, sentetik kau\u00e7uk ve di\u011fer polimerlerin \u00fcretiminde yayg\u0131n olarak kullan\u0131l\u0131r.<\/p>\n

\n\n\n\n\n\n\n\n
IUPAC’\u0131n ad\u0131<\/td>\n Mais-2-\u00e8ne<\/td>\n<\/tr>\n
Molek\u00fcler form\u00fcl<\/td>\n C4H8 veya CH3CHCHCH3<\/td>\n<\/tr>\n
CAS numaras\u0131<\/td>\n 624-64-6<\/td>\n<\/tr>\n
E\u015f anlaml\u0131<\/td>\n 2-Buten, Butilen, Etiletilen, But-2-en, B-Buten, Buten-2<\/td>\n<\/tr>\n
InChI<\/td>\n InChI=1S\/C4H8\/c1-3-4-2\/h3-4H,1-2H3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

2-b\u00fctenin \u00f6zellikleri<\/strong><\/h2>\n

Form\u00fcl 2-Buten<\/h3>\n

2-Butenin kimyasal form\u00fcl\u00fc C4H8’dir. Bu, molek\u00fcl\u00fcn d\u00f6rt karbon atomu ve sekiz hidrojen atomu i\u00e7erdi\u011fi anlam\u0131na gelir. Form\u00fcl, molek\u00fclde bulunan atomlar\u0131n t\u00fcrleri ve say\u0131lar\u0131 hakk\u0131nda bilgi verir ancak yap\u0131s\u0131 veya \u00f6zellikleri hakk\u0131nda bilgi vermez.<\/p>\n

2-Buten Molar K\u00fctlesi<\/h3>\n

But-2-ene’nin molar k\u00fctlesi 56,11 g\/mol’d\u00fcr. Molar k\u00fctle, bir maddenin bir mol\u00fcn\u00fcn k\u00fctlesidir ve molek\u00fcldeki t\u00fcm atomlar\u0131n atomik k\u00fctlelerinin toplanmas\u0131yla hesaplan\u0131r. But-2-ene i\u00e7in d\u00f6rt karbon atomu ve sekiz hidrojen atomu vard\u0131r, bu da toplam 56,11 g\/mol verir.<\/p>\n

2-butenin kaynama noktas\u0131<\/h3>\n

But-2-ene’nin kaynama noktas\u0131 0,88\u00b0C’dir. Kaynama noktas\u0131, bir s\u0131v\u0131n\u0131n gaza d\u00f6n\u00fc\u015ft\u00fc\u011f\u00fc s\u0131cakl\u0131kt\u0131r. But-2-ene durumunda, oda s\u0131cakl\u0131\u011f\u0131nda renksiz bir gazd\u0131r, ancak s\u0131cakl\u0131\u011f\u0131n d\u00fc\u015f\u00fcr\u00fclmesiyle bir s\u0131v\u0131 halinde yo\u011funla\u015ft\u0131r\u0131labilir. 0,88\u00b0C’de but-2-ene kaynamaya ve gaza d\u00f6n\u00fc\u015fmeye ba\u015flayacakt\u0131r.<\/p>\n

2-Buten Erime Noktas\u0131<\/h3>\n

But-2-ene oda s\u0131cakl\u0131\u011f\u0131nda gaz halinde bulundu\u011fundan belirgin bir erime noktas\u0131na sahip de\u011fildir. Ancak yeterince d\u00fc\u015f\u00fck bir s\u0131cakl\u0131\u011fa so\u011futulursa yo\u011funla\u015farak s\u0131v\u0131 hale gelebilir. Bu noktada kat\u0131la\u015ft\u0131\u011f\u0131 s\u0131cakl\u0131k deneyin ko\u015fullar\u0131na ba\u011fl\u0131 olacakt\u0131r.<\/p>\n

2-buten g\/mL yo\u011funlu\u011fu<\/h3>\n

But-2-ene’nin yo\u011funlu\u011fu oda s\u0131cakl\u0131\u011f\u0131nda ve bas\u0131n\u00e7ta 0,614 g\/mL’dir. Yo\u011funluk birim hacim ba\u015f\u0131na k\u00fctle miktar\u0131d\u0131r. But-2-ene durumunda bu, her mililitre but-2-ene i\u00e7in 0,614 gram k\u00fctle oldu\u011fu anlam\u0131na gelir.<\/p>\n

2-Buten Molek\u00fcl A\u011f\u0131rl\u0131\u011f\u0131<\/h3>\n

But-2-ene’nin molek\u00fcler a\u011f\u0131rl\u0131\u011f\u0131 56,11 g\/mol’d\u00fcr. Molek\u00fcl a\u011f\u0131rl\u0131\u011f\u0131, bir molek\u00fcldeki t\u00fcm atomlar\u0131n atom a\u011f\u0131rl\u0131klar\u0131n\u0131n toplam\u0131d\u0131r. But-2-en durumunda d\u00f6rt karbon atomu ve sekiz hidrojen atomu vard\u0131r, bu da toplam 56,11 g\/mol verir.<\/p>\n

2-b\u00fcten yap\u0131s\u0131 <\/h3>\n
\n
\"2-b\u00fcten\"<\/figure>\n<\/div>\n

But-2-ene do\u011frusal bir yap\u0131ya sahiptir ve alken grubuna aittir. Karakteristik reaktivitesini veren iki karbon-karbon \u00e7ift ba\u011f\u0131na sahiptir. Molek\u00fcl, iki metil grubunun ba\u011fl\u0131 oldu\u011fu merkezi bir karbon atomuna ve molek\u00fcl\u00fcn u\u00e7lar\u0131ndaki karbonlar\u0131n her birine ba\u011fl\u0131 iki hidrojen atomuna sahiptir.<\/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 Renksiz gaz<\/td>\n<\/tr>\n
Spesifik yo\u011funluk<\/td>\n 25\u00b0C’de 0,614<\/td>\n<\/tr>\n
Renk<\/td>\n Renksiz<\/td>\n<\/tr>\n
Koku<\/td>\n iyi huylu<\/td>\n<\/tr>\n
Molar k\u00fctle<\/td>\n 56,11 g\/mol<\/td>\n<\/tr>\n
Yo\u011funluk<\/td>\n 25\u00b0C’de 0,614 g\/mL<\/td>\n<\/tr>\n
F\u00fczyon noktas\u0131<\/td>\n -139,8\u00b0C<\/td>\n<\/tr>\n
Kaynama noktas\u0131<\/td>\n 0,88\u00b0C<\/td>\n<\/tr>\n
Fla\u015f noktas\u0131<\/td>\n -19\u00b0C<\/td>\n<\/tr>\n
sudaki \u00e7\u00f6z\u00fcn\u00fcrl\u00fck<\/td>\n \u00c7\u00f6z\u00fcnmez<\/td>\n<\/tr>\n
\u00e7\u00f6z\u00fcn\u00fcrl\u00fck<\/td>\n Organik \u00e7\u00f6z\u00fcc\u00fclerde \u00e7\u00f6z\u00fcn\u00fcr<\/td>\n<\/tr>\n
Buhar bas\u0131nc\u0131<\/td>\n 25\u00b0C’de 276,8 kPa<\/td>\n<\/tr>\n
Buhar yo\u011funlu\u011fu<\/td>\n 2,5 (hava = 1)<\/td>\n<\/tr>\n
pKa<\/td>\n 44<\/td>\n<\/tr>\n
pH<\/td>\n Uygulanamaz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

2-butenin g\u00fcvenli\u011fi ve tehlikeleri<\/strong><\/h2>\n

But-2-ene, uygun \u015fekilde kullan\u0131lmazsa \u00e7e\u015fitli g\u00fcvenlik tehlikeleri olu\u015fturabilir. Olduk\u00e7a yan\u0131c\u0131d\u0131r ve \u0131s\u0131ya, aleve veya k\u0131v\u0131lc\u0131ma maruz kald\u0131\u011f\u0131nda kolayca tutu\u015fabilir. Ayn\u0131 zamanda solunumu ve g\u00f6zleri tahri\u015f edicidir ve solundu\u011funda ba\u015f d\u00f6nmesine, ba\u015f a\u011fr\u0131s\u0131na ve mide bulant\u0131s\u0131na neden olabilir. Ayr\u0131ca yutulmas\u0131 halinde zararl\u0131d\u0131r ve i\u00e7 organlara zarar verebilir. But-2-en kullan\u0131l\u0131rken koruyucu ekipman kullan\u0131m\u0131 ve iyi havaland\u0131rma gibi uygun g\u00fcvenlik \u00f6nlemlerine uyulmal\u0131d\u0131r. Kimyasal\u0131 kullanmadan \u00f6nce potansiyel tehlikeleri hakk\u0131nda uygun e\u011fitim ve bilgiye sahip olmak \u00f6nemlidir.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Tehlike sembolleri<\/td>\n Yan\u0131c\u0131<\/td>\n<\/tr>\n
G\u00fcvenlik A\u00e7\u0131klamas\u0131<\/td>\n Is\u0131dan\/k\u0131v\u0131lc\u0131mdan\/a\u00e7\u0131k alevden\/s\u0131cak y\u00fczeylerden uzak tutun. Patlamaya dayan\u0131kl\u0131 elektrik\/havaland\u0131rma\/ayd\u0131nlatma ekipman\u0131 kullan\u0131n. Yaln\u0131zca k\u0131v\u0131lc\u0131m \u00e7\u0131karmayan aletler kullan\u0131n. Statik bo\u015falmaya kar\u015f\u0131 \u00f6nlem al\u0131n. Kab\u0131 s\u0131k\u0131ca kapal\u0131 tutun. \u0130yi havaland\u0131r\u0131lm\u0131\u015f bir alanda saklay\u0131n.<\/td>\n<\/tr>\n
BM kimlik numaralar\u0131<\/td>\n UN1012<\/td>\n<\/tr>\n
HS kodu<\/td>\n 290110<\/td>\n<\/tr>\n
Tehlike s\u0131n\u0131f\u0131<\/td>\n 3<\/td>\n<\/tr>\n
Paketleme grubu<\/td>\n II<\/td>\n<\/tr>\n
Toksisite<\/td>\n Yutulmas\u0131 halinde zararl\u0131d\u0131r, solunum yollar\u0131n\u0131 ve g\u00f6zleri tahri\u015f eder.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

2-b\u00fctenin sentezi i\u00e7in y\u00f6ntemler<\/strong><\/h2>\n

Hidrokarbon par\u00e7alamas\u0131, 2-butanol dehidrasyonu ve b\u00fctanlar\u0131n katalitik dehidrojenasyonu dahil olmak \u00fczere \u00e7e\u015fitli y\u00f6ntemler but-2-ene’yi sentezleyebilir.<\/p>\n

K\u0131rma y\u00f6ntemi, nafta, dizel veya kerosen gibi hidrokarbonlar\u0131n y\u00fcksek s\u0131cakl\u0131klarda \u0131s\u0131t\u0131lmas\u0131n\u0131 ve bunlar\u0131n b\u00fc-2-en dahil daha k\u00fc\u00e7\u00fck molek\u00fcllere par\u00e7alanmas\u0131n\u0131 i\u00e7erir. \u0130\u015flem termal veya katalitik k\u0131rma yoluyla ger\u00e7ekle\u015ftirilebilir.<\/p>\n

But-2-ene \u00fcretmek i\u00e7in insanlar ba\u015fka bir y\u00f6ntem olarak 2-butanol\u00fcn dehidrasyonunu kullan\u0131rlar. Bu y\u00f6ntemde, 2-b\u00fctanol\u00fc s\u00fclf\u00fcrik asit<\/a> veya fosforik asit<\/a> gibi bir dehidrasyon maddesiyle \u0131s\u0131tarak b\u00fc-2-en ve su olu\u015ftururlar. Reaksiyon tersine \u00e7evrilebilir ve reaksiyonu but-2-en olu\u015fumuna do\u011fru itmek i\u00e7in reaksiyon kar\u0131\u015f\u0131m\u0131ndan suyu \u00e7\u0131karabilirler.<\/p>\n

But-2-ene’yi sentezlemek i\u00e7in kullan\u0131lan ba\u015fka bir y\u00f6ntem, b\u00fctanlar\u0131n katalitik dehidrojenasyonudur. Bu i\u015flem, but-2-en ve hidrojen \u00fcretmek i\u00e7in b\u00fctan\u0131n krom al\u00fcmina veya platin gibi bir kataliz\u00f6r \u00fczerinde \u0131s\u0131t\u0131lmas\u0131n\u0131 i\u00e7erir. Reaksiyonun ekzotermitesi y\u00fcksektir ve kimyagerler bunu sabit yatakl\u0131 veya ak\u0131\u015fkan yatakl\u0131 bir reakt\u00f6rde ger\u00e7ekle\u015ftirebilirler.<\/p>\n

2-butenin kullan\u0131mlar\u0131<\/strong><\/h2>\n

But-2-ene, benzersiz kimyasal \u00f6zellikleri nedeniyle \u00e7ok \u00e7e\u015fitli end\u00fcstriyel ve ticari uygulamalara sahiptir. But-2-ene’nin baz\u0131 yayg\u0131n kullan\u0131mlar\u0131 \u015funlard\u0131r:<\/p>\n