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HEDP 60%
SINOBIO
3808940090
Chemical Properties
CAS Number: 2809-21-4
Molecular Formula: C₂H₈O₇P₂
Molecular Weight: 206.02
Appearance: Colorless or pale yellow transparent liquid (60% aqueous solution), white powder (solid form)
Density: ≥1.34 g/cm³ (20°C)
pH Value: pH ≤ 2.0 in 1% aqueous solution
Solubility: Soluble in water, insoluble in organic solvents
Stability:
High-Temperature Resistance: Effective at 250°C
Acid-Alkali Resistance: Stable within pH 2-12 range
Chlorine Oxidation Resistance: Performance superior to most organic phosphates
*Chelates calcium, magnesium, iron, and other metal ions to prevent scale formation
*Dissolves metal surface oxides to inhibit corrosion
*Synergistic effect when blended with polycarboxylic acid-type scale inhibitors
* Metal cleaning: Removes oxide layers from metal surfaces such as iron, copper, and zinc
* Dyeing industry: Acts as a peroxide stabilizer and color fixative
* Cyanide-free electroplating: Replaces cyanides as a chelating agent
* Pharmaceutical industry: Carrier for radioactive elements
* Electronics industry: Cleaning agent additive
* Household chemicals: Additive for household chemical products
The core advantages of HEDP 60% (60% hydroxyethylidene diphosphonic acid solution) lie in its highly efficient scale inhibition, strong corrosion inhibition, high temperature resistance, environmental friendliness, strong compatibility, and cost-effectiveness. A detailed analysis is provided below:
*Mechanism: HEDP 60% forms stable hexagonal ring chelates with metal ions such as calcium, magnesium, and iron in water, effectively inhibiting the formation of scale and deposits.
*Effect: It maintains high-efficiency scale inhibition even under high-temperature (below 250°C) and high-hardness water conditions, significantly reducing equipment scaling rates. For example, after a refinery adopted a formulation containing 5-10 mg/L HEDP, the scaling cycle of heat exchangers was extended from 3 months to 2 years.
*Application scenarios: Industrial circulating cooling water systems, boiler water treatment, oilfield injection water systems, etc.
*Mechanism: HEDP 60% forms a dense protective film on metal surfaces, blocking the contact of corrosive substances such as water, oxygen, and chlorine with the metal, thereby slowing down the corrosion rate.
*Effect: When used in combination with molybdate, it can significantly reduce the corrosion rate of carbon steel equipment in sulfur-containing water, extending the treatment cycle to over 2,000 hours.
*Application Scenarios: Corrosion protection for metal pipelines, heat exchangers, boilers, and other equipment.
*High-Temperature Stability: HEDP 60% remains active at temperatures below 250°C, making it suitable for high-temperature environments such as hot water circulation systems and boilers.
*pH Adaptability: Stable within a pH range of 2-12, outperforming traditional polyphosphates (e.g., sodium hexametaphosphate becomes ineffective due to hydrolysis at pH > 7).
*Application Scenarios: Circulating cooling water systems in the petrochemical and power industries, as well as industrial scenarios requiring acid and alkali resistance.
*Low Toxicity and Low Pollution: HEDP 60% has an LD₅₀ (oral, rat) > 2000 mg/kg, classified as a low-toxicity product; High biodegradability (some products reach 90%), resistant to hydrolysis, no phosphate emissions, reducing eutrophication pressure on water bodies.
*Compliance: Complies with EU REACH regulations (water discharge concentration must be below 1 mg/L), serving as an environmentally friendly alternative to traditional phosphate-containing water treatment agents.
*Application scenarios: Fields with strict environmental requirements, such as electronic industry cleaning and daily chemical additives.
*Compatibility: HEDP 60% can be blended with various water treatment chemicals such as polycarboxylates, zinc salts, and defoamers to enhance overall performance. For example, when blended with polycarboxylate-based scale inhibitors, it produces a synergistic effect with a scale inhibition rate exceeding 95%.
*Application Scenarios: Complex industrial systems requiring comprehensive water treatment, such as circulating cooling water treatment in the petrochemical and power industries.
*Cost-Effectiveness: High purity (60% active components) and stability reduce waste and the need for reprocessing; easy to store and transport, lowering logistics and storage costs.
*Multifunctionality:
-Cleaning Agent: Adding 0.1–0.5% can soften water quality, enhance cleaning power, and avoid phosphate eutrophication issues.
- Textile industry: Acts as a peroxide stabilizer and color fixative, improving cotton fabric whiteness by over 15% and colorfastness by half to one grade.
- Electronics industry: Used for semiconductor cleaning to remove metal impurities from silicon wafer surfaces.
- Agriculture: Acts as a fertilizer enhancer, increasing phosphorus utilization by 20%-30%.
*Application Scenarios: Covers multiple fields including industry, agriculture, daily chemicals, and electronics, meeting diverse needs.
HEDP 60% : 220 kg drum or 1250 kg / IBC.
Storage for one year in shady room and dry place.
Chemical Properties
CAS Number: 2809-21-4
Molecular Formula: C₂H₈O₇P₂
Molecular Weight: 206.02
Appearance: Colorless or pale yellow transparent liquid (60% aqueous solution), white powder (solid form)
Density: ≥1.34 g/cm³ (20°C)
pH Value: pH ≤ 2.0 in 1% aqueous solution
Solubility: Soluble in water, insoluble in organic solvents
Stability:
High-Temperature Resistance: Effective at 250°C
Acid-Alkali Resistance: Stable within pH 2-12 range
Chlorine Oxidation Resistance: Performance superior to most organic phosphates
*Chelates calcium, magnesium, iron, and other metal ions to prevent scale formation
*Dissolves metal surface oxides to inhibit corrosion
*Synergistic effect when blended with polycarboxylic acid-type scale inhibitors
* Metal cleaning: Removes oxide layers from metal surfaces such as iron, copper, and zinc
* Dyeing industry: Acts as a peroxide stabilizer and color fixative
* Cyanide-free electroplating: Replaces cyanides as a chelating agent
* Pharmaceutical industry: Carrier for radioactive elements
* Electronics industry: Cleaning agent additive
* Household chemicals: Additive for household chemical products
The core advantages of HEDP 60% (60% hydroxyethylidene diphosphonic acid solution) lie in its highly efficient scale inhibition, strong corrosion inhibition, high temperature resistance, environmental friendliness, strong compatibility, and cost-effectiveness. A detailed analysis is provided below:
*Mechanism: HEDP 60% forms stable hexagonal ring chelates with metal ions such as calcium, magnesium, and iron in water, effectively inhibiting the formation of scale and deposits.
*Effect: It maintains high-efficiency scale inhibition even under high-temperature (below 250°C) and high-hardness water conditions, significantly reducing equipment scaling rates. For example, after a refinery adopted a formulation containing 5-10 mg/L HEDP, the scaling cycle of heat exchangers was extended from 3 months to 2 years.
*Application scenarios: Industrial circulating cooling water systems, boiler water treatment, oilfield injection water systems, etc.
*Mechanism: HEDP 60% forms a dense protective film on metal surfaces, blocking the contact of corrosive substances such as water, oxygen, and chlorine with the metal, thereby slowing down the corrosion rate.
*Effect: When used in combination with molybdate, it can significantly reduce the corrosion rate of carbon steel equipment in sulfur-containing water, extending the treatment cycle to over 2,000 hours.
*Application Scenarios: Corrosion protection for metal pipelines, heat exchangers, boilers, and other equipment.
*High-Temperature Stability: HEDP 60% remains active at temperatures below 250°C, making it suitable for high-temperature environments such as hot water circulation systems and boilers.
*pH Adaptability: Stable within a pH range of 2-12, outperforming traditional polyphosphates (e.g., sodium hexametaphosphate becomes ineffective due to hydrolysis at pH > 7).
*Application Scenarios: Circulating cooling water systems in the petrochemical and power industries, as well as industrial scenarios requiring acid and alkali resistance.
*Low Toxicity and Low Pollution: HEDP 60% has an LD₅₀ (oral, rat) > 2000 mg/kg, classified as a low-toxicity product; High biodegradability (some products reach 90%), resistant to hydrolysis, no phosphate emissions, reducing eutrophication pressure on water bodies.
*Compliance: Complies with EU REACH regulations (water discharge concentration must be below 1 mg/L), serving as an environmentally friendly alternative to traditional phosphate-containing water treatment agents.
*Application scenarios: Fields with strict environmental requirements, such as electronic industry cleaning and daily chemical additives.
*Compatibility: HEDP 60% can be blended with various water treatment chemicals such as polycarboxylates, zinc salts, and defoamers to enhance overall performance. For example, when blended with polycarboxylate-based scale inhibitors, it produces a synergistic effect with a scale inhibition rate exceeding 95%.
*Application Scenarios: Complex industrial systems requiring comprehensive water treatment, such as circulating cooling water treatment in the petrochemical and power industries.
*Cost-Effectiveness: High purity (60% active components) and stability reduce waste and the need for reprocessing; easy to store and transport, lowering logistics and storage costs.
*Multifunctionality:
-Cleaning Agent: Adding 0.1–0.5% can soften water quality, enhance cleaning power, and avoid phosphate eutrophication issues.
- Textile industry: Acts as a peroxide stabilizer and color fixative, improving cotton fabric whiteness by over 15% and colorfastness by half to one grade.
- Electronics industry: Used for semiconductor cleaning to remove metal impurities from silicon wafer surfaces.
- Agriculture: Acts as a fertilizer enhancer, increasing phosphorus utilization by 20%-30%.
*Application Scenarios: Covers multiple fields including industry, agriculture, daily chemicals, and electronics, meeting diverse needs.
HEDP 60% : 220 kg drum or 1250 kg / IBC.
Storage for one year in shady room and dry place.
