Array ( [0] => 15539500 [id] => 15539500 [1] => cswiki [site] => cswiki [2] => Oktan [uri] => Oktan [3] => [img] => [4] => [day_avg] => [5] => [day_diff] => [6] => [day_last] => [7] => [day_prev_last] => [8] => [oai] => [9] => [is_good] => [10] => [object_type] => [11] => 0 [has_content] => 0 [12] => [oai_cs_optimisticky] => ) Array ( [0] => {{Infobox - chemická sloučenina [1] => | název = Oktan [2] => | systematický název = Oktan [3] => | obrázek = Octane-3D-balls.png [4] => | velikost obrázku = 180px [5] => | číslo CAS = 111-65-9 [6] => | číslo EINECS = 203-892-1 [7] => | indexové číslo = 601-009-00-8 [8] => | sumární vzorec = C8H18 [9] => | vzhled = bezbarvá kapalina [10] => | molární hmotnost = 114,228 g/mol [11] => | teplota tání = −57 °C (216 K) [12] => | teplota varu = 125,52 °C (398,67 K) [13] => | hustota = 0,703 g/cm³ [14] => | teplota vznícení = 220 °C [15] => | pKa = 50 [16] => | R-věty = {{R|11}} {{R|38}} {{R|50/53}} {{R|65}} {{R|67}} [17] => | S-věty = ({{S|2}}) {{S|9}} {{S|16}} {{S|29}} {{S|33}} {{S|60}} {{S|61}} {{S|62}} [18] => | symboly nebezpečí GHS = {{GHS02}}{{GHS07}}{{GHS08}}{{GHS09}}{{Citace elektronického periodika | titul = Octane | periodikum = pubchem.ncbi.nlm.nih.gov | vydavatel = PubChem | url = https://pubchem.ncbi.nlm.nih.gov/compound/356 | jazyk = en | datum přístupu = 2021-05-23 }}
{{Nebezpečí}} [19] => | H-věty = {{H|225}} {{H|304}} {{H|315}} {{H|336}} {{H|410}} [20] => }} [21] => '''Oktan''' je osmiuhlíkatý [[Alkany|alkan]] (tedy [[Uhlovodíky|uhlovodík]] pouze s jednoduchými vazbami) s chemickým vzorcem CH3(CH2)6CH3. Získává se z těžké benzínové frakce. [22] => [23] => == Izomery == [24] => Oktan má 18 strukturních [[izomerie|izomerů]] (25 včetně [[Izomerie#Stereoizomerie|stereoizomerů]]): [25] => [26] => * oktan (''n''-oktan) [27] => * [[2-methylheptan]] [28] => * [[3-methylheptan]] [29] => * [[4-methylheptan]] [30] => * [[3-ethylhexan]] [31] => * [[2,2-dimethylhexan]] [32] => * [[2,3-dimethylhexan]] [33] => * [[2,4-dimethylhexan]] [34] => * [[2,5-dimethylhexan]] [35] => * [[3,3-dimethylhexan]] [36] => * [[3,4-dimethylhexan]] [37] => * [[3-ethyl-2-methylpentan]] [38] => * [[3-ethyl-3-methylpentan]] [39] => * [[2,2,3-trimethylpentan]] [40] => * [[Isooktan|2,2,4-trimethylpentan]] (isooktan) [41] => * [[2,3,3-trimethylpentan]] [42] => * [[2,3,4-trimethylpentan]] [43] => * [[2,2,3,3-tetramethylbutan]] [44] => [45] => == Použití == [46] => Název tohoto uhlovodíku se objevuje v názvu technické veličiny [[oktanové číslo]], neboť izomer [[Isooktan|2,2,4-trimethylpentan]] se využívá při stanovení stupně odolnosti paliva pro [[zážehový motor|zážehové spalovací motory]] proti [[klepání motoru|klepání]] ([[detonace|detonacím]]). [47] => [48] => == Reference == [49] => [50] => [51] => == Externí odkazy == [52] => * {{Commonscat}} [53] => * {{Wikislovník|heslo=oktan}} [54] => {{Pahýl}} [55] => [56] => {{alkany}} [57] => {{Autoritní data}} [58] => {{Portály|Chemie}} [59] => [60] => [[Kategorie:Alkany]] [] => )
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Oktan

Oktan je osmiuhlíkatý alkan (tedy uhlovodík pouze s jednoduchými vazbami) s chemickým vzorcem CH3(CH2)6CH3. Získává se z těžké benzínové frakce.

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