Neutral pH Tank Clean Detergent is a pH-neutral, liquid concentrated detergent with good cleaning qualities. It contains effective but mild and environmentally safe wetting agents and surfactants that allow rapid penetration to remove fats and oils. Neutral pH Tank Clean Detergent is especially suitable for hydrocarbon freeing of tanks, and is safe on all tank coatings including zinc silicate.
For the removal of traces of hydrocarbons to a hydrocarbon free wall wash test specification prior to loading of sensitive cargoes. Neutral pH Tank Clean Detergent may also be used as a general purpose economical tank cleaning detergent.
The most economical method of using Neutral pH Tank Clean Detergent is by recirculation washing, using tank cleaning machines. Make up a solution of 1–5% in preferably fresh water in the tank and recirculate. Whenever possible, the cleaning solution should be heated to 50–80°C. Rinse off with hot fresh water. Alternatively, hand spray the tank with a 20–50% solution of Neutral pH Tank Clean Detergent and allow to stay for 30–60 minutes before a final rinse with hot water. When the tank is cleaned to a “water white standard”, remove any free water and ventilate until the tank is dry.