ISBN 978-0-7487-6162-3. ↑ US patent 5672749, Phillip R. DeVrou, W. Bryan Waites, Robert E. Young, "Process for preparing acetyl chloride" ↑ Takao Maki, Kazuo Takeda “Benzoic Acid and Derivatives” Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi: 10.1002/14356007.a03_555 ↑ Helferich, B.; Schaefer, W. (1929). "n-Butyrl chloride".