Chemical Name: Liquid High Retention Etherification Agent (CHPTAC) English Name: 3-Chloro-2-hydroxypropyl trimethyl ammonium chloride (CHPTAC) Appearance: Colorless transparent liquid Active Matter Content: 69% Impurity Content: 1,3 - dichloropropanol: â?¤ 15PPm Epichlorohydrin: â?¤ 5PPm PH: 4.0-7.0 Density: 1.16 (20�°C) Usage: Widely used in paper industry Features and usage: By altering the cationic etherifying agent's molecular structure, the starch's DS increases without impacting gelatinization temperature. This elongates the starch chain and enhances charge adsorption through increased branching. When applied at the wet end, it reinforces and retains fibers, elevating ash, whiteness, and opacity of paper. Energy is conserved, breakage minimized, and starch usage reduced, yielding multiple benefits.