Good Quality Water Treatment Chemical Antiscalant HEDP CAS#2809-21-4

Model NO.
2809-21-4
Acid-Base Property
Neutral Surface Disposal Agent
Certification
WQA
Environmental Protection
Yes
Color
White
Appearance
Liquid
Type
Sewage Treatment Chemicals
Pack
200kgs
Delivery
Prompt
Brand
Lonwin
Assay
as Requst
Transport Package
200kgs /Drum
Specification
purity: 50 %
Trademark
Lonwin
Origin
Made in China
HS Code
2931901990
Production Capacity
2400mt Per Year
Reference Price
$ 450.00 - 1,080.00

Product Description

Quick Details
Classification:
Chemical Auxiliary Agent

CAS No.:
2809-21-4

Other Names:
HEDPA

MF:
C2H8O7P2

EINECS No.:
220-552-8

Purity:
50% 60% 90%

Place of Origin:
Shanghai, China

Type:
Carbon Black

Usage:
Coating Auxiliary Agents, Electronics Chemicals, Leather Auxiliary Agents, Paper Chemicals, Petroleum Additives, Plastic Auxiliary Agents, Rubber Auxiliary Agents, Surfactants, Textile Auxiliary Agents, Water Treatment Chemicals

Brand Name:
Lonwin

Model Number:
HEDP
Supply Ability
Supply Ability:
100 Ton/Tons per Week
Packaging & Delivery
Packaging Details
25L drum, 200L drum, 1000L IBC, 25KG bag Tank or packed as customers' requirements
Port
Qingdao port, Shanghai port
Picture Example:
 

Lead Time   :
Quantity(Kilograms) 1 - 32000 >32000
Est. Time(days) 15 To be negotiated
Product Description

Water Treatment Chemical Antiscalant  
(HEDP)

 

CAS No.: 2809-21-4                         EINECS No.: 220-552-8
Molecular Formula: C2H8O7P2       Molecular Weight: 206.02

RIDADR: UN 3265 8/PG III

Structural Formula: 

 

 

Properties:

 

HEDP   is a kind of scale and corrosion inhibitor which belongs to organic phosphonic acid. It can form stable complexes with iron, copper, zinc and other metal ions, and can also dissolve the metal surface oxide. Under 250 ºC condition, HEDP can still play a good corrosion and scale inhibition effect.

 

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 show better than that of other organic phosphonic acid (salt) acids (salt).

 

HEDP   can react with metal ions in water system to form hexa-element chelating complex, especially with calcium ions. Therefore, HEDP has good anti-scale and visible threshold effects. When used in combination with other water treatment chemicals, it shows ideal synergistic effects.

 

HEDP   solid state is a high purity product, suitable for cold winter areas; Because of its high purity, it is especially used as the cleaning agents in electronics industry, and additives in daily chemicals.

 

Applications:

 

HEDP   is widely used as scale and corrosion inhibitor in industrial circulating cooling water systems of electric power, chemical industry, metallurgy, chemical fertilizer, and also in medium or low pressure boilers, oilfield water injection and oil pipeline.

 

Besides these applications,   HEDP   can also be used as cleaning agent of metal and nonmetal in the textile industry, as peroxide stabilizer and fixing agent in bleaching and dyeing industry, as complexing agent in cyanide free electroplating industry, as the carrier of radioactive elements in pharmaceutical industry, and so on.

 

Specification:

Items Index
Appearance Clear, Colorless to pale yellow aqueous solution White crystal powder
Active content (HEDP)% 60.0 min 90.0 min
Active content (HEDP·H 2 O)% - 98.0 min
Phosphorous acid (as PO 3 3-) % 1.0 max 0.8 max
Phosphoric acid  (as PO 4 3-  )% 0.6 max 0.5 max
Chloride (as Cl - )% 0.01 max 0.01 max
pH (1% water solution) 2.0 max 2.0 max
Density  (20ºC)g/cm 3 1.40 min -
Fe, mg/L 10.0 max 5.0 max
Colour APHA (Hazen) 10.0 max -
Ca sequestration (mg CaCO 3 /g) 500.0 min -


Usage:

 

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.

 

Synonyms:

HEDP; HEDP(A); HEDPA; Etidronic Acid;

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;

Hydroxyethylidene-1,1-diphosphonicacid (HEDP);

1-Hydroxyethylidenediphosphonic Acid;

Hydroxyethylidene Diphosphonic Acid (HEDP);

1-Hydroxy-1,1-Ethanediyl Ester;

Oxyethylidenediphosphonic Acid (OEDP);

Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents

Package and Storage

 

HEDP Liquid: Normally in 200L HDPE drum, 1000L IBC, or customers' requirement.

HEDP Solid: 25kg inner liner PE bag, 1000kg woven bag, or customers' requirement.

Storage for ten months in room shady and dry place

 

PNEUTEC.IT, 2023