CAS No.2809-21-4
Dequest:2010
Molecular Formula:C2H8O7P2
Molecular weight: 206.02
Properties:
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals'surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250 centigrade degrees. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.
Specification:
Appearance:Colorless or light yellow transparent liquid;White crystal powder
Active contentú¿HEDPú¬%:58.0-62.0;89.0 min
Phosphorous acidú¿as PO33-ú¬%:2.0 max;0.5 max
Phosphoric acid ú¿asPO43- ú¬%:0.8 max;0.5 max
Chloride (as Cl-)%:0.01 max;0.01 max
pHú¿1% solutionú¬:2 max;2 max
Density ú¿20 centigrade degreesú¬g/cm3:1.40;
Fe ion ppm:10 max;20 max
Colour APHA (Hazen):40 max;
Usage:
HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
Package and Storage:
HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients.
Storage for ten months in room shady and dry place.
CAS No.6419-19-8
Dequest:2000
Molecular Formula:N(CH2PO3H2)3
Molecular weight: 299.05
Properties:
ATMP has excellent chelation, low threshold inhibition and lattice distortion ability. It can prevent scale formation, calcium carbonate in particular, in water system. ATMP has good chemical stability and is hard to be hydrolyzed in water system. At high concentration, it has good corrosion inhibition.
ATMP is used in industrial circulating cool water system and oilfield water pipeline in fields of thermal power plant and oil refinery plant. ATMP can decrease scale formation and inhibit corrosion of metal equipment and pipeline. ATMP can be used as chelating agent in woven and dyeing industries and as metal surface treatment agent.
The solid state of ATMP is crystal powder, soluble in water, easily deliquescence, suitable for usage in winter and freezing districts. Because of its high purity, it can be used in woven & dyeing industries and as metal surface treatment agent.
Specification:
Appearance:Colorless or light yellow transparent liquid;White crystal powder
Active acid %:48.0-52.0;95 min
Chloride (as Cl-)%:2.0(or1.0) min;1.0 min
pH valueú¿1% solutionú¬:2.0 max;2.0 max
Fe (as Fe3+) (ppm):20;20
Density (20 centigrade degrees)g/cm3:1.33 min;-
Colour APHA (Hazen):40 max;-
Usage:
ATMP is usually used together with organophosphoric acid, polycarboxylic acid and salt to built all organic alkaline water treatment agent. ATMP can be used in many different circulating cool water system. The dosage of 1-20mg/L is recommended. As corrosion inhibitor, the dosage of 20-60mg/L is preferred.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
Package and Storage:
ATMP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required ATMP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients.
Storage for ten months in room shady and dry place.
CAS No.1429-50-1
Dequest:2040
Molecular Formula:C6H12O12N2P4Na8
Molecular weight:612.13
Properties:
EDTMPS is nitrogenous organic polyphosphonic acid, a part of cathodic corrosion inhibitor.Its corrosion inhibition is 3~5 times better than that of inorganic polyphosphate. It can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance. It shows excellent scale inhibition ability under temperature 200 centigrade degrees. It can dissociate into 8 positive-negative ions, thus can chelate with many metal ions to form polymer reticulation complex, to destroy the normal crystallization of calcium scale. EDTMPS shows better antiscale effects to calcium sulfate and barium sulfate.
Specification:
Appearance:Clear yellow to umber transparent liquid
Active component(EDTMPS)%:30.0min
Organic phosphonic acid(asPO43- )%:10.0min
Phosphorous acid(as PO33-)%:5.0max
Phosphoric acid (asPO43- )%:1.0max
pH(1% water solution):9.5-10.5
Density(20 centigrade degrees)g/cm3:1.25min
Chloride (as Cl-)%:3.0max
Usage:
EDTMPS can be used as corrosion inhibitor in circulating cool water system and boiler water. It is a chelating agent in non-cyanogen electroplating industry and a water-softening agent in printing & dyeing industry. When used alone, 2-10mg/L is preferred. When built with HPMA by ratio ETDMP:HPMA=1:3, it can be used for low pressure boiler. It can also be built with BTA, PAAS and zinc salt.
Keywords: Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium,EDTMPS,EDTMPS China
Package and Storage:
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.
CAS No:15827-60-8
Dequest: 2060
Molecular Formula:C9H28O15N3P5
Molecular weight: 573.2
Properties:
DTPMPA is innocuous, easy to be dissolved in acid solution. DTPMPA has excellent scale and corrosion inhibition and good thermal tolerance ability. DTPMPA can inhibit the scale formation of carbonate, sulfate and phosphate. On situation of alkali environment and high temperature (above 210 centigrade degrees) DTPMPA has better scale and corrosion inhibition effect than other organophosphines.
Specification:
AppearancE:Brown transparent liquid
Active acid %:48.0-52.0
Phosphorous acid(as PO33-)%:3.0 max
Chloride (as Cl-)%:12-17
Density(20 centigrade degrees)g/cm3:1.35-1.45
pH(1% solution):2.0
Fe ppm:35 max
Usage:
DTPMPA can be used as scale and corrosion inhibitor in circulating cool water system and boiler water, and especially in alkali circulating cool water system without additional pH regulation, It can also be used in oilfield refill water, cool water and boiler water with high concentration of barium carbonate. When used alone, little scale sediment is found even none of dispersant is used.
DTPMPA can also be used as peroxide stabilizer, chelating agent in woven & dyeing industry, pigment dispersant, microelements carrying agent in fertilizer and concrete modifier. In addition, DTPMPA is used in papermaking, electroplating, acid cleaning and cosmetics.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.íí
Keywords: DTPMPA,DTPMPA China,Diethylene Triamine Penta (Methylene Phosphonic Acid)
Package and Storage:
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.
CAS No 23783-26-8
Molecular Formula:C2H5O6P
Molecular weight:156
Properties:
HPAA is chemically stable, hard to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution. HPAA can improve zinc solubility. Its corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP. When built with low molecular polymers, its corrosion inhibition effect is even better.
Specification:
Appearance:Dark umber transparent viscous liquid
Solid content %:47.0-50.0
Phosphorous acid(as PO33-)%:4.0 max
Density(20 centigrade degrees)g/cm3:1.30 min
pH(1% solution):1.0-3.0
Usage:
HPAA is mainly used as cathode corrosion inhibitor in oilfield refill water system in fields such as steel & iron, petrochemcal, power plant and medical industries. When built with zinc salt, the effect is even better.
Package and Storage:
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for one year in room shady and dry place.
