Water Treatment 1-Hydroxyethylidene-1, 1-Diphosphonic Acid CAS 2809-21-4 HEDP 60% 90%

• CAS No.: 2809-21-4
• Formula: C2h8o7p2
• EINECS: 220-552-8
• Acid-Base Property: 1% Water Solution 2.0 Max
• Environmental Protection: Yes
• Color: as Pic
• Model NO.: zxchem
• Appearance: Liquid
• Type: Water Treatment
• Transport Package: 25/50kg Drum or 1000kg Big Bags
• Specification: 1000kg big bags
• Trademark: ZXCHEM
• Origin: China
• Production Capacity: 5000mts/Year

Product Description

Specifications: 
 

Commodities Name	1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(Hedp)
Appearance	Clear, Colorless To Pale Yellow Aqueous Solution			White Crystal Powder
Active Content (HEDP)%	60.0 Min			90.0 Min
Active Content (HEDP•H2O) %	-			98.0 Min
Phosphorous Acid (As PO33-) %	2.0 Max			0.8 Max
Phosphoric Acid(As PO43- )%	0.8 Max			0.5 Max
Chloride (As Cl-) %	0.02 Max			0.01 Max
Ph (1% Water Solution)	2.0 Max			2.0 Max
Density (20ºC)G/Cm3	1.40 Min			-
Fe, Mg/L	20.0 Max			10.0 Max
Ca Sequestration (Mg Caco3/G)	500.0 Min			-

 

Description:

1. HEDP Cas No: 2809-21-4 is an organic phosphoric acid corrosion inhibitor. It can chelate with iron, copper and zinc ions to form stable chelating compounds, and can dissolve oxidized substances on the surface of these metals.
2. HEDP Cas No: 2809-21-4 has excellent scale and corrosion inhibition performance at a temperature of 250°C. HEDP has good chemical stability at high pH, and is not easily hydrolyzed or decomposed under normal light and heating conditions. Its acid/alkali and chlorine oxidation resistance are better than other organic phosphoric acid (salt).
3. HEDP Cas No: 2809-21-4 can react with metal ions in the water system to form a six-element chelate, especially with calcium ions. Therefore, HEDP has good fouling resistance and visible threshold effect. When used with other water treatment chemicals, it shows good synergy.

Application:

1. HEDP Cas No: 2809-21-4 is used as a scale and corrosion inhibitor in circulating cold water systems in the fields of electric power, chemical industry, metallurgy, fertilizers, etc., oil fields and low-pressure boilers.
2. In the textile industry, HEDP Cas No: 2809-21-4 is used as a cleaning agent for metals and non-metals. In the printing and dyeing industry, HEDP is used as a peroxide stabilizer and fixing agent.
3. In non-cyanide electroplating, HEDP Cas No: 2809-21-4 is used as a chelating agent. Preferably the dosage of 1-10mg/L is used as scale inhibitor, 10-50mg/L corrosion inhibitor and 1000-2000mg/L detergent.
4. Generally, HEDP Cas No: 2809-21-4 is used together with polycarboxylic acid.

 

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FAQ:

Q: What is the Minimum Order Quantity (MOQ)?
A: The MOQ is 1000KG.

Q: How can I obtain a sample?
A: We offer samples up to 500g for free. To receive one, please provide your DHL account for freight collection, or cover the courier costs upfront. These costs will be refunded upon placement of a bulk order.

Q: What is the lead time for orders?
A: Typically, orders are ready to be shipped approximately two weeks after receipt of the prepayment or Letter of Credit (L/C). However, this timeframe may vary by up to one week earlier or later, depending on production schedules.

Q: What are the bulk packaging options?
A: For bulk orders, packaging varies depending on the product form. Liquid products are packaged in 200-liter polythene plastic drums, with a net weight of 250kg per drum, or in 1250kg IBC Tanks, ensuring safe and efficient transportation. For powder products, we typically use 25KG Kraft paper bags, 25KG cardboard drums, or 1MT polypropylene bags, accommodating different handling and shipping requirements.

Q: What payment methods are accepted?
A: We accept various common international trade payment methods, including Letters of Credit (L/C), Documents against Payment (D/P), and Telegraphic Transfer (T/T). Please note that we do not accept credit card payments. Payment terms can be negotiated to provide flexibility and convenience for our clients, ensuring a smooth transaction process.

Q: Can the packaging be customized?
A: Yes, packaging can be customized to meet the specific needs of our clients. This includes options for different container sizes, materials, and labeling services. Please discuss your requirements with us in advance to ensure we can accommodate your needs.

Q: Is there a discount for large orders?
A: We offer volume discounts for large orders. The discount rate depends on the order quantity and product specifications. Please contact our sales team with your order details to discuss potential discounts and pricing.

Q: What quality certifications do you have?
A: Our products and manufacturing processes are certified by international standards such as ISO 9001 for quality management systems and ISO 14001 for environmental management systems. Specific product certifications and compliance documents are available upon request.

Q: How can I track my order?
A: Once your order is shipped, we will provide you with a tracking number and shipping details. You can track your order through the carrier's website or contact our customer service team for updates on your shipment's status.

Q: What shipping methods do you offer, and what are the terms of transport?
A: We offer versatile shipping options to accommodate the diverse needs of our clients, including sea freight, air freight, and land transportation. For sea freight, we support all major ports in China, ensuring comprehensive coverage for international shipping. Our land transportation options include both rail and road freight, providing flexibility for domestic and cross-border deliveries. Regarding transport terms, we are equipped to handle a variety of Incoterms, including FOB (Free On Board), CIF (Cost, Insurance, and Freight), CFR (Cost and Freight), DDP (Delivered Duty Paid), FCA (Free Carrier), and EXW (Ex Works), allowing us to tailor shipping and logistics services to meet specific requirements.