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Phosphate ester corrosion inhibitor for acidic aqueous systems

Hordaphos® MDGB

Hordaphos MDGB is an effective corrosion inhibitor for acidic aqueous systems, e.g. for cleaners for the food processing industry. It is a clear, colorless to yellowish liquid with an ester-like odor. The product is not in all ratios clearly soluble in water.

For more details see our Video about Hordaphos.

  • Effective corrosion inhibitor even at low concentrations
  • Works on common metal surfaces
  • Reduces the corrosivity of various acids
  • Effective in cleaners for the food processing industry
  • Low-viscosity liquid that can be easily dosed
For regulatory details such as the classification and labelling as dangerous substances or goods please refer to our corresponding Material Safety Data Sheet.

Hazard class Hazard category H-phrases
Eye damage Category 1 Causes serious eye damage
Corrosive to metals Category 1 May be corrosive to metals
Category of danger/Category Hazard symbol R-phrases
Irritant Irritating to eyes
Characteristics   Unit   Target value   DS¹)   TD²)   Test method 
Phosphorus %(w/w)   19.0 - 20.0  

Photometry after oxidizing dissolution; (11/17) or wavelength dispersive X-ray fluorescence spectrometry; (11/23)  
Density g/cm³   1.32 - 1.38  

at 20 °C, flexural resonator; (11/65)  
Viscosity mPa*s approx. 1100  

at 20 °C  
pH Value   approx. 1.5  

at 20 °C (1% aqueous solution)  
Acid Number mg KOH/g   600 - 700  

titration using alkali, 2nd end point at pH 9-10; (11/11)  
¹) Delivery specification: The product is constantly monitored to ensure that it adheres to the specified values. Test methods: Clariant method numbers 11/xx in brackets.
²) Technical data: The technical data are used solely to describe the product and are not subject to regular monitoring.  
Hordaphos MDGB is used for the corrosion inhibition of acids. Typical applications include acidic cleaners for ceramic, glass and metal surfaces in the domestic, industrial and commercial sector.

Water miscible cutting fluids are another field of application. Hordaphos MDGB is a highly active EP additive due to its low decomposition temperature.
Packaging and Handling
Delivery form

Hordaphos MDGB is supplied in 75 kg net PE tight head drums (600 kg net pallets) and 1,350 kg net containers.  

Hordaphos MDGB must be stored in tightly closed original containers away from frost, heat and direct sunlight. 

Minimum shelf life is 12 months from the date of shipping when stored according to the said conditions. 

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Hordaphos® MDGB

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