HEDP (1-hydroxye ethyl-1,1-two pyrine) and HEDP tetrafine are common phosphate resistant agents, which are mainly used in water treatment and industrial applications. They have some differences in strong alkali conditions. Below is the comparison between them:
Chemical name and ingredients:
HEDP: 1-hydroxye ethyl-1,1-two pyrine, inorganic compounds, without sodium ions.
HEDP tetralet: 1-hydroxye ethyl-1,1-sodium tetraonate, inorganic compounds, containing four sodium ions.
Dool resistance effect:
Both HEDP and HEDP four sodium have a good effect, which can form complexes with metal ions and inhibit the production of scale.
Under the same conditions, HEDP four sodium complexation capabilities are usually slightly higher than HEDP, and the stool resistance effect is more obvious.
Solubility:
HEDP four sodium is better dissolved in water, which can quickly dissolve and release sodium ions.
HEDP can also be dissolved in water, but the solubility is relatively low.
PH stability:
HEDP and HEDP four sodiums have good stability under strong acid conditions, which can maintain dirt resistance.
Under the conditions of strong alkali, HEDP will gradually hydrolyze to reduce their ability to block their stools. The stability of HEDP four sodium under strong alkali conditions is better, and the stable effect is relatively stable.
It should be noted that when using HEDP and HEDP four sodium, it should follow the product instructions and recommended concentrations to avoid excessive use or mixing with other chemicals. When using stuffing agent under strong alkali conditions, it is recommended to choose HEDP tetrainteen sodium to obtain a better dirt resistance effect. However, in the specific application scenarios, it is best to consult professionals to obtain more accurate suggestions. From the official website www.hedpna.com