Acuro Organics Ltd, New Delhi
Acuro Organics Ltd, New Delhi


Problems arising out of interference of the undesired metallic ions in the processes, the formation of scales and deposits in the equipment like heat exchangers etc. are frequently encountered in the industry. Phosphonates offers effective solutions to many of these problems with its array of diverse key properties. These products are available in acid form as well as in the form of sodium salts, with each molecule having distinct advantage for specific applications.

Key Properties:


The multivalent metal ions like Calcium, Magnesium, Copper, Zinc etc. can be complexed with Phosphonates at stoichometric levels, forming a stable water soluble complex that suppresses unwanted effects of metal ions in various processes.

2.Threshold effect:

The scalant mixture can be kept in a solution form by a low concentration of Phosphonates (below the stoichiometric levels), exhibiting a threshold effect.

3.Hydrolytic Stability:

Phosphonates are highly stable and resistant to hydrolysis over a wide range of pH and temperatures unlike polyphosphates.

4.Deflocculation (Dispersion):

Phosphonates gets adsorbed on the growth sites of scalants. This hinders the growth of crystals from getting cluttered.

5.Corrosion Control:

Phosphonates in combination with Zinc Phosphate, Molybdate or Nitrate, offers synergistically enhanced corrosion inhibition in water systems compared to any of the individual components.

6.Chlorine Stability:

In the industry, Chlorine is used as an oxidizing agent as well as a biocide. Phosphonates are stable in systems containing chlorine.

Phosphonates  are used for: Cooling water treatment, Boiler water treatment, Soaps and Detergents, Textile processing, Bottle washing, Industrial & Institutional cleaners, Deflocculation of slurries, Antiscalant formulations for oilfields, Sea water evaporators, Reverse Osmosis & Sugar processing.The sodium and calcium salts of EDTA (ethylenediaminetetraacetic acid) are common sequestrants in many kinds of foods and beverages. The EDTA molecule can bind to metal ions by forming six bonds to it - two from nitrogen atoms in amino groups and four from oxygen atoms in carboxyl groups.

DTPMPA Chemical

DTPMPA Chemical
Approx. Rs 125 / Kilogram(s)
ACUROCEL DF (DTPMP Acid /Diethylenetriamine Penta(Methylenephosphonic Acid)

ACUROCEL DF is an organophosphonate exhibiting excellent metal ion sequestration at stoichiometric concentration and threshold inhibition of metal salt precipitation at sub-stoichiometric concentrations. The ability of ACUROCEL DF to de-flocculate or disperse solid particles combined with its temperature and hydrolytic stability makes it a versatile ingredient for applications requiring efficient metal ion control.

Chemical NameDiethylenetriamine penta (methylenephosphonic
AppearanceAmber coloured clear solution
Active Content (as acid)50 ± 1 %
Specific gravity @ 25°C1.40-1.44
pH (1% solution)Less than 2
Chlorides (as HCl)15 - 17 %
Iron Content (as Fe)10 ppm Max.
SolubilityNot soluble in water, consult Aquapharm for preparing dilutions.

(These are typical values and not specifications)

  • Anti-scalant for oil field
  • Paper mills as a bleach stabilizer, metal ion control and brightness reversion control additive
  • In textile auxiliary formulations as a peroxide stabilizer
  • I & I Cleaners
  • Reverse osmosis antiscalant formulations
  • Metal pre-treatment formulations

Approx. Rs 94 / Kilogram(s)
ACUROCEL HF (HEDP 50% / Hydroxyethylidene Diphosphonic Acid)


UsesCooling Water Treatment, Textiles, Sugar Processing, Dyes, Soaps & Detergents, Oilfields, Peroxide Bleaching.
Chemical name1 Hydroxythylidene 1, 1-diphosphonic acid
CAS No.2809-21-4
Molecular weight206
AppearanceColorless to pale yellow clear liquid


Active acid50% min.
Specific gravity at 25oc1.44 ± 0.01
pH of 1% solutionLess than 2
Iron content as Fe20 ppm max.
Chloride as Cl0.1 % max.
Sequestering value at pH11Min. 520 mg of CaCO3 per gm of product

Approx. Rs 170 / Kilogram(s)
ACUROCEL PS is an organophosphonate exhibiting multifunctional properties of sequestration, deflocculation, threshold inhibition & stability to oxidizing biocides such as chlorine and bromine. ACUROCEL PS is the preferred scale control agent in high hardness water due to its high Ca tolerance compared to other phosphonates.


Chemical Name2-Phosphonobutane-1,2,4-tricarboxylic acid
AppearanceClear colorless to pale yellow aqueous solution
Active Content50 + 1 %
Specific gravity @ 25°C1.27 – 1.30
pH (1% solution)Less than 2
Chlorides (asHCl)10 ppm Max.
Iron Content10 ppm Max.
(These are typical values and not specifications)

  • Scale inhibitor in cooling water treatment, reverse osmosis anti-scalants etc. especially in high water hardness conditions. Effective against CaCO3 and CaSO4 scales.
  • Additive for industrial & institutional cleaners, laundry & dish wash detergents.

Approx. Rs 97 / Kilogram(s)
ACUROCEL HD (HEDP 60% / Hydroxyethylidene Diphosphonic Acid)

ACUROCEL HD is an organophosphonate with multifunctional properties like sequestration of hardness salts and heavy metals, deflocculation, threshold inhibition and hydrolytic stability as a single active ingredient. Because of the combination of these properties ACUROCEL HD has a wide range of applications as a scale inhibitor and corrosion inhibitor.
Chemical Name1-Hydroxyethylidene-1, 1-diphosphonic acid
AppearanceColourless aqueous solution
Active Content60 + 2 %
Specific gravity @ 25°C1.44 + 2
pH (1% solution)Less than 2
Chlorides (as HCl)100 ppm Max.
Phosphorous acid2.5 % Max.
(These are typical values and not specifications)


ACUROCEL HD is widely used in industrial water treatment, textile auxiliaries, sugar mill anti-scalants, thermal and geo-thermal antiscalants, oil-field chemicals, reverse osmosis antiscaalnts, detergents, industrial and institutional cleaners, soaps and institutional cleaners, soaps and personal care products etc.

Etidronic Acid

Etidronic Acid
Etidronic acid is a chelating agent and may be added to bind or, to some extent, counter the effects of substances, such as calcium, iron or other metal ions, which may be discharged as a component of grey wastewater and could conceivably contaminate groundwater supplies. It has corrosion inhibiting properties on unnalloyed steel. Etidronic acid also acts to retard rancidification and oxidation of fatty acids.

Chemical Name: (1-hydroxyethan-1,1-diyl)bis(phosphonic acid)

Assay : 58-62%
Sp Gravity: 1.38 - 1.44
pH : Less than 2

ATMP 50%

ATMP 50%

Approx. Rs 85 / Kilogram(s)


Acuro Organics Ltd, New Delhi
Rohit Karnani (Director)
No.27, Ashoka Chambers, 5-B, Rajendra Park, Pusa Road
New Delhi - 110060, Delhi, India

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