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2809-21-4
HEDP CAS 2809-21-4

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HEDP 60% solution & 98% solid (CAS 2809-21-4) has good scale and corrosion inhibition effect, high temperature resistance, good oxidation resistance, low toxicity and other characteristics. It is mainly used for scale and corrosion inhibition of industrial circulating cooling water. Because it can form stable complexes with iron, copper, aluminum, zinc and other metal ions, it can be used to clean rust and inorganic salt scales in boilers and pipes.


TNJ Chemical produces super quality HEDP CAS 2809-21-4 99.5%MIN assay, GMP SGS certification, USP BP EP FCC standard, Competitive price, online purchase support. To buy HEDP CAS 2809-21-4, please contact sales@tnjchem.com


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.

 

Specification of HEDP

HEDP 58%-62% liquid

Appearance                                      Colorless to pale yellow aqueous solution
Active content (HEDP)%                    58.0-62.0
Phosphorous acid (as PO33-)%        1.0 max
Phosphoric acid (asPO43- )%            0.6 max
Chloride (as Cl-) ppm                        100.0 max
pH (1% solution)                               2.0 max
Density g/cm3                                   1.43-1.47
Fe,mg/L                                             10.0 max
Colour APHA (Hazen)                         30.0 max
Ca sequestration (mg CaCO3/g)       500.0 min


HEDP 98% solid

Appearance                                       White crystal powder
Active content(HEDP)%                      90.0 min
Active content (HEDP H2O)%             98.0 min
Phosphorous acid (as PO33-)%         0.8 max
Phosphoric acid  (asPO43- )%            0.5 max
Chloride (as Cl-) ppm                         100.0max
pH (1% solution)                                2.0 max
Fe,mg/L                                              5.0 max

 

Application of HEDP

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..
1) In light woven industry,  HEDP is used as detergent for metal and nonmetal.
2) In dyeing industryHEDP is used as peroxide stabilizer and dye-fixing agent;
3) In non-cyanide electroplatingHEDP is used as chelating agent. The dosage of 110mg/L is preferred as scale inhibitor,
    10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. 

4) HEDP is usually used together with polycarboxylic acid.

5) HEDP is listed as an ingredient of several cosmetic formulations where it is used for suppressing radical formation, emulsion stabiliser and viscosity control.

 

Packing
Solid:  25kg per bag,25mt per 20ft container

Liquid: 250kg per drum,80drums per 20ft container

 

Storage & Transport
Stored in cool and airy place; away from fire and heat; handle with care; no breakage, avoid leakage.It is valid for 1 years under proper condition.
HEDP is classified as Dangerous Good for transport (UN 3261,Class 8,Packing group III)
Please refer to MSDS for more information about Safety,Storage and Transportation.

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