Anhidrid sirćetne kiseline

Anhidrid sirćetne kiseline
Acetic anhydride
Acetic anhydride
Acetic anhydride
Nazivi
IUPAC naziv
acet anhidrid
Sistemski IUPAC naziv
etanoiski anhidrid
Drugi nazivi
Etanoil etanoat
Acetil oksid
Identifikacija
3D model (Jmol)
ChEBI
ChemSpider
ECHA InfoCard 100.003.241
EC broj 203-564-8
RTECS AK1925000
UNII
  • O=C(OC(=O)C)C
  • CC(=O)OC(=O)C
Svojstva
C4H6O3
Molarna masa 102,09 g·mol−1
Agregatno stanje čista tečnost
Gustina 1,082 g cm−3, tečnost
Tačka topljenja −731 °C (−1.284 °F; −458 K)
Tačka ključanja 1.398 °C (2.548 °F; 1.671 K)
2.6 g/100 mL
Indeks refrakcije (nD) 1.3901
Opasnosti
Bezbednost prilikom rukovanja ICSC 0209
Korozivan (C)
R-oznake R10, R20/22, R34
S-oznake (S1/2), S26, S36/37/39, S45
NFPA 704
NFPA 704 four-colored diamondFlammability code 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g., diesel fuelHealth code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroformReactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g., calciumSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g., cesium, sodium
2
2
1
Tačka paljenja 49 °C
316 °C (601 °F; 589 K)
Eksplozivni limiti 2.7–10.3%
Srodna jedinjenja
Srodne materije: anhidridi kiselina
 Propioniski anhidrid
Srodna jedinjenja
 Sirćetna kiselina
Acetil hlorid
Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje materijala (na 25 °C [77 °F], 100 kPa).
ДаY verifikuj (šta je ДаYНеН ?)
Reference infokutije

Anhidrid sirćetne kiseline (Acetanhidrid, etanski anhidrid) je hemijsko jedinjenje sa formulom (CH3CO)2O.[3] On se obeležava sa Ac2O. On je najjednostavniji kiselinski anhidrid koji se može izolovati. Acet anhidrid nalazi široku primenu kao reagens u organskoj sintezi. On je bezbojna tečnost koja ima jak miris sirćetne kiseline, koja se formira reakcijom sa vlagom iz vazduha.

Anhidrid mravlje kiseline je još jednostavniji kiselinski anhidrid, ali se spontano razlaže, posebno kad se odstrani iz rastvora.

Reference

  1. ^ Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today. 15 (23-24): 1052—7. PMID 20970519. doi:10.1016/j.drudis.2010.10.003.  уреди
  2. ^ Evan E. Bolton; Yanli Wang; Paul A. Thiessen; Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry. 4: 217—241. doi:10.1016/S1574-1400(08)00012-1. 
  3. ^ Acetic anhydride was first synthesized in 1852 by French chemist Charles Frédéric Gerhardt (1816-1856). See: Charles Gerhardt (1852) “Recherches sur les acides organiques anhydres,” Comptes Rendus, vol. 34, pages 755-758.

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