醋醛

醋醛（粵拼：cou3 cyun4，Acetaldehyde），係隻醛類嘅有機化合物，化學式CH₃CHO。

醋醛
Lewis structure of acetaldehyde Skeletal structure of acetaldehyde
Ball-and-stick model Space-filling model
別名	Acetic aldehyde Ethyl aldehyde[1] Acetylaldehyde[2]
識別
CAS號	75-07-0
PubChem	177
ChemSpider	172 Y
SMILES	O=CC
InChI InChI=1/C2H4O/c1-2-3/h2H,1H3
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（水）	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	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。

攷

1. SciFinderScholar (accessed 4 November 2009). Acetaldehyde (75-07-0) Substance Detail.
2. Molecular Pathology and Diagnostics of Cancer p. 190
3. Stoffdaten Acetaldehyd bei Celanese Chemicals. 互聯網檔案館嘅歸檔，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97版). CRC Press. pp. 5–88. ISBN 9781498754293.
6. "Acetaldehyde".
7. Template:Sigma-Aldrich
8. "Acetaldehyde". NIOSH. 4 December 2014. 喺12 February 2015搵到.

拎

• International Chemical Safety Card 0009
• NIOSH Pocket Guide to Chemical Hazards
• Methods for sampling and analysis
• IARC Monograph: "Acetaldehyde"
• Hal Kibbey, Genetic Influences on Alcohol Drinking and Alcoholism, Indiana University Research and Creative Activity, Vol. 17 no. 3.
• United States Food and Drug Administration (FDA) information for acetaldehyde
• Acetaldehyde production process flow sheet by ethylene oxidation method