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Hordaphos MDHX

Extreme pressure/anti-wear additive

Edition Date :
September 30, 2021
Hordaphos MDHX is an effective EP/AW additive with corrosion inhibiting properties and is used for metal working fluids (emulsions, neat oil), rolling oils & emulsions, fire-resistant hydraulic fluids (HFD, HFD-U) and gear oils.


  • Excellent lubricity and EP/AW properties
  • Contributes to corrosion protection
  • Broad registration status (Note: in Europe to be used as transported isolated intermediate under strictly controlled conditions)
Product Function
  • EPAW additive
Chemical Type
  • Phosphoric acid esters
  • Hydraulic fluids
  • Rolling
  • Cutting and forming fluid (neat oil)


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Hordaphos MDHX

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Technical Data

Product group Phosphoric acid ester
Phosphorus content 12.6 - 13.6%
Acid value (mg KOH/g) 375
pH (1% in water) 2.3
Pour point -50°C
Reichert test (5% in mineral oil) 18 mm2
Reichert test (20% in mineral oil) 12 mm2
Four ball wear test (DIN 51350) 0.74 mm
TGA inflection point 222°C
TGA deposits 7.3%


  • Metal working fluids (emulsions, neat oil)
  • Rolling oils and emulsions
  • Fire-resistant hydraulic fluids (HFD, HFD-U)
  • Industrial gear oils