Food additives. Hydroxypropyl distarch phosphate is a food additive with thickening effect. Hydroxypropyl distarch phosphate is a white powder that is tasteless, odorless, and insoluble in water. It has a thickening effect and is a common food additive. It can increase the viscosity of food and keep the food in a stable suspension or latex state. This additive contains hydroxypropyl, chloropropanol, starch, sulfur dioxide, arsenic, lead, cereals and other substances. This additive is found in mayonnaise, cold drink products, canned fish, canned vegetables and other foods. Note that hydroxypropyl distarch phosphate is a food additive. Although it is harmless to the human body, it should not be consumed in excess. After all, it contains heavy metals such as arsenic and lead.