HEDP 60%/Scale Inhibitior/ 2809 -21-4 Metal Sequestrant

Model NO.
HEDP
EINECS
220-552-8
Classification
Phosphoric Acid
Appearance
Powder
Grade Standard
Medicine Grade
Acid Strength
Strong Acid
Kind
Organic Acid
Quality
Tech Grade
Packaging
IBC Tank
Element
Monobasic Acid
Oxidation
Oxidizing Acid
Volatility
Volatile Acid
Stability
Stabilized Acid
Name
HEDP
Field
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Pool Use
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Feature
Metal Sequestrant
Transport Package
Drum
Specification
60%
Trademark
AQUA CHEM
Origin
China
HS Code
29319000
Production Capacity
25000
Reference Price
$ 720.00 - 1,170.00
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Product Description

 

Detailed Photos

HEDP 60%/Scale Inhibitior/2809-21-4 Metal Sequestrant HEDP 60%/Scale Inhibitior/2809-21-4 Metal Sequestrant HEDP 60%/Scale Inhibitior/2809-21-4 Metal Sequestrant HEDP 60%/Scale Inhibitior/2809-21-4 Metal Sequestrant HEDP 60%/Scale Inhibitior/2809-21-4 Metal Sequestrant
 

Product Description

 

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
 

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

Properties:
 
HEDP is an organophosphoricacid 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 ºC . 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 chlorin oxidation tolerance are better than that of other organophosphoricacids (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.
 
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.
 
 

Product Parameters

 
Items Index
Appearance Clear, Colorless to pale
yellow aqueous solution 		White crystal powder
Active content (HEDP)% 58.0-62.0 90.0 min
Active content (HEDP·H 2 O)% - 98.0 min
Phosphorousacid (as PO 3 3-) % 2.0 max 0.8 max
Phosphoricacid  (as PO 4 3-  )% 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/cm 3 1.40 min -
Fe, mg/L 20.0 max 10.0 max
Ca sequestration (mg CaCO 3 /g) 500.0 min  
 

Packaging & Shipping

HEDP liquid: 200L plastic drum,IBC(1000L),customers' requirement.
HEDP solid: 25kg/bag,customers' requirement.
Storage for twelve months in room shady and dry place.
 




 

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