Phosphonates

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:

1.Sequestration:

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.
 
Applications:

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 Acid

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.

SPECIFICATIONS
Chemical Name Diethylenetriamine penta (methylenephosphonic
acid)
Appearance Amber coloured clear solution
Active Content (as acid) 50 ± 1 %
Specific gravity @ 25°C 1.40-1.44
pH (1% solution) Less than 2
Chlorides (as HCl) 15 - 17 %
Iron Content (as Fe) 10 ppm Max.
Solubility Not soluble in water, consult Aquapharm for preparing dilutions.

(These are typical values and not specifications)



APPLICATIONS
  • 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

HEDP 50

ACUROCEL HF (HEDP 50% / Hydroxyethylidene Diphosphonic Acid)

Applications:


Uses Cooling Water Treatment, Textiles, Sugar Processing, Dyes, Soaps & Detergents, Oilfields, Peroxide Bleaching.
Chemical name 1 Hydroxythylidene 1, 1-diphosphonic acid
Abbreviation HEDP
CAS No. 2809-21-4
Formula C2P2O7H8
Molecular weight 206
Appearance Colorless to pale yellow clear liquid

Specifications:

Active acid 50% min.
Specific gravity at 25oc 1.44 ± 0.01
pH of 1% solution Less than 2
Iron content as Fe 20 ppm max.
Chloride as Cl 0.1 % max.
Sequestering value at pH11 Min. 520 mg of CaCO3 per gm of product

PBTC

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.

Specifications:

Chemical Name 2-Phosphonobutane-1,2,4-tricarboxylic acid
Appearance Clear colorless to pale yellow aqueous solution
Active Content 50 + 1 %
Specific gravity @ 25°C 1.27 – 1.30
pH (1% solution) Less than 2
Chlorides (asHCl) 10 ppm Max.
Iron Content 10 ppm Max.
(These are typical values and not specifications)


Applications:
  • 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.

HEDP 60

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.
SPECIFICATIONS
Chemical Name 1-Hydroxyethylidene-1, 1-diphosphonic acid
Appearance Colourless aqueous solution
Active Content 60 + 2 %
Specific gravity @ 25°C 1.44 + 2
pH (1% solution) Less than 2
Chlorides (as HCl) 100 ppm Max.
Phosphorous acid 2.5 % Max.
(These are typical values and not specifications)

APPLICATIONS:

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.

Acurocel AS ATMP Acid

Acurocel AS ATMP Acid

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Acurocel AS (ATMP Acid / Amino Trimethylene Phosphonic Acid)

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

Specifications
Chemical Name Amino trimethylene phosphonic acid
Appearance Clear colorless to pale yellow aqueous solution
Active Content (as acid) 49 1%
Specific Gravity @ 25°C 1.33 0.02
pH (1% solution) < 2
Chlorides as HCl 1.0 % Max.
Iron Content 10 ppm Max.

(These are typical values and not specifications)

Applications

Acurocel AS is incorporated in various chemical formulations for industrial water treatment, oil field, home care, industrial cleaners, metal treatment, electroplating, inks & construction chemicals.


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