HEDP (Hydroxyethylidene Diphosphonic Acid) is a highly efficient organic phosphonic acid scale and corrosion inhibitor with multiple excellent properties. It can form stable complexes with iron, copper, zinc and other metal ions, effectively dissolving the oxides on the metal surface, thus protecting the metal from corrosion. Even under the condition of up to 250℃, HEDP can still play an excellent corrosion and scale inhibition role, and its stability is still excellent in the high pH environment, not easy to hydrolyze, and not easy to decompose under general light and heat conditions.

HPMA is a modified cellulose derivative commonly used in paints, coatings, adhesives, textile and paper industries. It is a water-soluble, highly viscous polymer compound with good thickening, emulsifying, suspending and film-forming properties. Its working principle is usually related to its chemical structure and physical properties. Specifically, the working principle of HPMA can be understood from the following aspects:

EDTMPS (Ethylene Diamine Tetra Methylene Phosphonic Acid Sodium Salt) is mainly used in the following industrial fields, especially related to water treatment, corrosion prevention and cleaning:

1. Water treatment

    Anti-scaling and dispersing agent: EDTMPS is widely used in the field of water treatment, especially to prevent scale formation. Metal ions (e.g. calcium, magnesium, etc.) contained in water react with carbonate and sulfate to form precipitates, which tend to accumulate on equipment and lead to scaling.EDTMPS prevents metal ions from precipitating by chelating with them through its phosphoric acid group, inhibiting scale formation and keeping water clean.
    Boiler water treatment: scale often accumulates in boiler systems, affecting heat exchange efficiency and even damaging the boiler. edtmps can inhibit scale deposition in boiler water, preventing it from damaging the equipment.
    Cooling Water Systems: In cooling water circulation systems, EDTMPS prevents scale and rust from forming on metal surfaces by binding with metal ions in the water, keeping the system operating efficiently.
    Membrane protection and cleaning: In water treatment membrane systems such as reverse osmosis membranes, EDTMPS can effectively disperse particles in the water and prevent them from being deposited on the membrane surface, protecting the long-term service life of the membrane.

EDTMPS is a kind of common water treatment chemicals, as the manufacturer of EDTMPS Kerry Chemical, let's introduce this product:

EDTMPS performance:
1. cathodic type corrosion inhibitor: EDTMPS belongs to the cathodic type corrosion inhibitor, compared with inorganic polyphosphates, its corrosion inhibition rate is 3 to 5 times higher.
2. water solubility: good water solubility, non-toxic and non-polluting when miscible with water. 3. chemical stability and temperature resistance.
3. chemical stability and temperature resistance: good chemical stability, good temperature resistance, can still play an effective scale inhibition effect under the condition of up to 200℃.
4. chelating ability: it can dissociate into 8 positive and negative ions in aqueous solution, chelate with several metal ions, form several monomer structure macromolecule reticulation complexes, loosely dispersed in the water, so that the normal crystallization of calcium scale is destroyed.
5. It has good scale inhibition effect on calcium sulfate and barium sulfate scale.

I. Properties and Uses
EDTMPS is a nitrogen-containing organic polyphosphonic acid, which is a cathodic-type corrosion inhibitor with a corrosion inhibition rate 3 to 5 times higher than that of inorganic polyphosphates. This compound is miscible with water, is chemically stable and does not produce toxicity or contaminants. It also has good chemical stability and temperature resistance, and is still effective in preventing scale formation at 200°C. EDTMPS can dissociate into 8 positive and negative ions in aqueous solution, so it can form chelating compounds with a variety of metal ions to form a macromolecular reticulation complex of multiple monomer structures, which are loosely dispersed in the water, disrupting the normal crystallization process of calcium scales.EDTMPS is effective against EDTMPS has good scale inhibition effect on calcium sulfate and barium sulfate scale.
EDTMPS is widely used as corrosion and scale inhibitor for circulating water and boiler water, cyanide-free electroplating complexing agent, chelating agent and oxygen bleaching stabilizer in textile printing and dyeing industry.

EDTMPS, or ethylenediaminetetramethylenephosphonic acid sodium salt, is a multifunctional organic phosphonate. Its chemical properties are mainly manifested in the following aspects:

Solubility: EDTMPS has good solubility in water, which enables it to be dispersed rapidly and uniformly in water during water treatment, so that it can play its role effectively.

1. cathodic corrosion inhibitor: EDTMPS belongs to cathodic corrosion inhibitor, compared with inorganic polyphosphate, its corrosion inhibition rate is 3 to 5 times higher.
2. water solubility: good water solubility, non-toxic and non-polluting when miscible with water. 3. chemical stability and temperature resistance.
3. chemical stability and temperature resistance: good chemical stability and temperature resistance, it can still play an effective scale inhibition effect under the condition of up to 200℃.
4. chelating ability: it can dissociate into 8 positive and negative ions in aqueous solution, chelate with several metal ions, form several monomer structure macromolecule reticulation complexes, loosely dispersed in the water, so that the normal crystallization of calcium scale is destroyed.
5. It has good scale inhibition effect on calcium sulfate and barium sulfate scale.

Isothiazolinone is a highly effective, low-toxic, broad-spectrum biocide widely used in industrial water treatment and personal care products.
Below are articles related to isothiazolinone

Role of Isothiazolinone & Manufacturer

http://www.hedpblog.com/is-isothiazolinone-a-hazardous-material/