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{"title":"CAS 15827-60-8 Diethylenetriaminepenta(methylene-phosphonic acid) compounding","imgUrl":"https:\/\/img.chinax.com\/nimg\/95\/b6\/f727abe3c66abd339b9d582dc45a-200x200-1\/cas_15827_60_8_diethylenetriaminepenta_28methylene_phosphonic_acid_29_compounding_high_efficiency_scale_and_corrosion_inhibitors_i.jpg","attrs":{"Brand Name":"HOYOSHEE","Model Number":"HYX-WT06","Minimum Order Quantity":"1KG","Price":"Negotiable"}}
{"title":"CAS 37971-36-1 2-Phosphonobutane-1,2,4-tricarboxylic acid water treatment for","imgUrl":"https:\/\/img.chinax.com\/nimg\/95\/ac\/7d453860c5e96ed56b90dc291d73-200x200-1\/cas_37971_36_1_2_phosphonobutane_1_2c2_2c4_tricarboxylic_acid_water_treatment_for_compounding_high_efficiency_scale_and_corrosion_.jpg","attrs":{"Brand Name":"HOYOSHEE","Model Number":"HYX-WT07","Minimum Order Quantity":"1KG","Price":"Negotiable"}}
{"title":"N-Hexylphosphonic Acid (HPA) CAS 4721-24-8 Scale Inhibitor Corrosion Inhibitor","imgUrl":"https:\/\/img.chinax.com\/nimg\/09\/99\/c7b9146c6dbb086344db72684560-200x200-1\/n_hexylphosphonic_acid_28hpa_29_cas_4721_24_8_scale_inhibitor_corrosion_inhibitor_and_surfactant_for_water_treatment.jpg","attrs":{"Brand Name":"HOYOSHEE","Model Number":"HYX-WT08","Certification":"ISO9001","Place of Origin":"China"}}
CAS: 2809-21-4 - Organic phosphoric acid scale and corrosion inhibitor for industrial circulating cooling water systems in power, chemical, and metallurgical applications
Corrosion Inhibition Mechanism
HEDP forms a protective film on metal surfaces, particularly carbon steel, through chemisorption of phosphonate groups onto the metal oxide layer. This barrier film significantly reduces corrosion rates by protecting against dissolved oxygen and aggressive ions. HEDP is commonly used with zinc salts or other corrosion inhibitors to enhance film formation effectiveness.
Performance Advantages Over Other Phosphonates
Feature
HEDP
ATMP
PBTC
Chlorine Stability
Excellent
Moderate
Good
Hydrolysis Resistance
Excellent
Good
Very Good
Calcium Carbonate Inhibition
Excellent
Excellent
Good
Calcium Phosphate Inhibition
Moderate
Moderate
Excellent
Iron Stabilization
Good
Good
Excellent
Thermal Stability
Excellent (250°C)
Good (200°C)
Excellent (250°C)
Industrial Applications
Cooling Water Systems
HEDP is extensively used in recirculating cooling water systems (open and closed loops) to:
Control calcium carbonate and calcium sulfate scaling
Provide corrosion protection for carbon steel and copper alloys
Operate effectively under high alkalinity and high pH conditions
Maintain performance in the presence of chlorine and other oxidizing biocides
Typical dosage ranges from 2 to 20 mg/L.
Boiler Water Treatment
In low- to medium-pressure boilers, HEDP serves as a:
Scale inhibitor for calcium and magnesium deposits
Chelating agent to prevent sludge formation
Oxygen scavenger synergist
Oil and Gas Production
HEDP is used in oilfield applications for:
Downhole scale inhibition: Prevents barium sulfate, strontium sulfate, and calcium carbonate scaling in production wells
Squeeze treatments: Adsorbs onto formation rock for extended release
Flowline protection: Maintains flow assurance in pipelines
Reverse Osmosis (RO) Systems
As an antiscalant component, HEDP prevents membrane scaling from:
Calcium sulfate (CaSO₄)
Calcium carbonate (CaCO₃)
Barium sulfate (BaSO₄)
Strontium sulfate (SrSO₄)
Industrial Cleaning
HEDP is a key component in:
Descaling formulations for heat exchangers, boilers, and evaporators
Metal surface treatment and degreasing
Bottle washing and industrial cleaning applications
Textile and Dyeing
Used as a:
Peroxide stabilizer in bleaching processes
Metal ion sequestrant to prevent dye precipitation
Dispersant for pigments and fillers
Synergistic Formulations
HEDP is often formulated with complementary chemicals to achieve enhanced performance:
Blended With
Synergistic Effect
Zinc salts
Enhanced corrosion protection for carbon steel; improved film formation
Polymers (PAA, AA/AMPS)
Superior dispersion of iron oxides and sludge; improved calcium phosphate control
Azoles (BTA, TTA)
Copper and copper alloy corrosion protection
PBTC
High-temperature stability and calcium phosphate inhibition
Environmental Considerations
HEDP contains phosphorus, which can contribute to eutrophication in receiving waters if discharged in large quantities. However, HEDP exhibits:
Biodegradation: Slow to moderate biodegradability under standard test conditions (OECD 301)
Bioaccumulation: Low potential for bioaccumulation
Aquatic toxicity: Low acute toxicity (LC₅₀ > 100 mg/L for fish and daphnia)
For applications with strict phosphorus discharge limits, alternatives include:
PBTC (lower phosphorus content per unit activity)
PESA (polyepoxysuccinic acid) – phosphorus-free
PASP (polyaspartic acid) – phosphorus-free and biodegradable
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2010
Total Annual:
3000W-0.2B
Employee Number:
100~500
Ecer Certification：
Verified Supplier
Hunan Hoyoshee Chemical Industrial Co.Ltd was established in 2019, it is a high-tech enterprise that integrates scientific research, development, design, production, sales, and technical consulting services. The company's annual production of 15000 tons of new materials and water treatment agen... Hunan Hoyoshee Chemical Industrial Co.Ltd was established in 2019, it is a high-tech enterprise that integrates scientific research, development, design, production, sales, and technical consulting services. The company's annual production of 15000 tons of new materials and water treatment agen...
