醋醛粵拼cou3 cyun4,Acetaldehyde),係隻類嘅有機化合物,化學式CH3CHO

醋醛
別名 Acetic aldehyde
Ethyl aldehyde[1]
Acetylaldehyde[2]
識別
CAS號 75-07-0
PubChem 177
ChemSpider 172 Yes check.svgY
SMILES
O=CC
InChIKey IKHGUXGNUITLKF-UHFFFAOYAB
歐盟編號 200-836-8
ChEBI 15343
RTECS AB1925000
KEGG C00084
性質
化學式
外觀 冇色液體
密度 0.784 g·cm−3 (20 °C)[3]

0.7904–0.7928 g·cm−3 (10 °C)[3]

熔點 −123.37 °C(150 K)
沸點 20.2 °C(293 K)
溶解度 miscible
溶解度 miscible with ethanol, ether, benzene, toluene, xylene, turpentine, acetone
slightly soluble in chloroform
蒸氣壓 740 mmHg (20 °C)[4]
pKa 13.57 (25 °C, H2O)[5]
黏度 0.21 mPa-s at 20 °C (0.253 mPa-s at 9.5 °C)[6]
危險性
GHS危險性符號
Template:GHS02Template:GHS07Template:GHS08[7]
主要危害 potential occupational carcinogen[8]
NFPA 704
NFPA 704.svg
4
3
3
 
LD50 1930 mg/kg (rat, oral)
LC50 13,000 ppm (rat),
17,000 ppm (hamster),
20,000 ppm (rat)[8]
如果無講明,所有數據都係指25 °C,100 kPa嘅時候嘅情況。

  1. SciFinderScholar (accessed 4 November 2009). Acetaldehyde (75-07-0) Substance Detail.
  2. Molecular Pathology and Diagnostics of Cancer p. 190
  3. 3.0 3.1 Stoffdaten Acetaldehyd bei Celanese Chemicals. 互聯網檔案館歸檔,歸檔日期17 May 2008. as of December 1999.
  4. Template:PGCH
  5. Haynes, William M., 編 (2016). CRC Handbook of Chemistry and Physics (第97th版). CRC Press. pp. 5–88. ISBN 9781498754293.
  6. "Acetaldehyde".
  7. Template:Sigma-Aldrich
  8. 8.0 8.1 "Acetaldehyde". NIOSH. 4 December 2014. 喺12 February 2015搵到.