... coagulant, a sequestering agent( sodium citrate attaches to calcium ions in water, keeping them from interfering with detergents and soaps ... or crystalline powder, odourless, odourless; Soluble in water, insoluble in ethanol; Slightly deliquescence in moist air, pH value is between ... 6-8.6 in 5% aqueous solution, when heated to 150 degree centigrade, it may lose crystal water. Specification Appearance: ...