Abstract: The present invention relates to medium chain peroxycarboxylic acid compositions of neutral or alkaline pH, to methods of making these compositions, and to methods employing these compositions. The methods include methods of cleaning. The compositions include cleaning compositions.

Abstract: A method for treating CIP equipment is provided according to the present invention. The CIP equipment includes process equipment. The method includes steps of treating the CIP equipment with a multiple phase treating composition comprising a treating liquid phase and a treating gaseous phase and rinsing the CIP equipment with a multiple phase rinsing composition comprising a rinsing liquid phase and a rinsing gaseous phase.

Abstract: A delivery head is provided that includes a delivery arm and a spray diverter constructed to divert a multiple phase treatment composition flowing through the delivery arm and diverted by the spray diverter to provide a target spray pattern. The delivery head includes an open area sufficient to provide the target spray pattern and to provide a back pressure of less than about 10 psig when a multiple phase treatment composition is flowing through the delivery head at a liquid flow rate of about 2 gal/min. to about 20 gal/min., and the volumetric ratio of the gas to liquid is between about 5:1 and about 75,000:1 at atmospheric pressure. A vessel including a delivery head and a method for treating a vessel interior surface are provided.