Castrol Techniclean 90 XBC

VISCOSITY - Metalwork Degreaser & Cleaning Solution

Castrol Techniclean 90 XBC Aqueous Mild Alkaline Process Cleaner


Castrol Techniclean 90 XBC is an aqueous, low alkalinity, industrial process cleaner containing surfactants and corrosion inhibitors. The product is formulated without inorganic salts, formaldehyde-releasing agents and monoethanolamine (MEA).


Techniclean 90 XBC is designed for inter-operational and final process cleaning operations of ferrous and aluminium goods, suited for use in a wide range of modern spray, high-pressure spray and intensive flood wash equipment. This cleaner effectively removes residues from parts and components after machining with soluble oils, light-duty neat cutting or forming oils as well as thin corrosion preventive films, lubrication oils, swarf and general dirt.

Techniclean 90 XBC is formulated to be compatible with the Castrol Alusol XBB and Hysol XBB coolant ranges. When applied in cleaning processes after machining with Alusol and Hysol XBB coolants the used cleaner solution can be recycled to the previous XBB coolant emulsion system.

Though the product is particularly developed for in-process cleaning, Techniclean 90 XBC is also well suited for maintenance machine tool cleaning.


Castrol Techniclean 90 XBC Product Advantages:

  • Leaves a thin temporary corrosion preventive film on the metal surface after drying – minimizes scrap rate which improves productivity
  • Effectively minimises excessive foam – reduces the costly risk of dangerous cavitations/damage of high-pressure pumps
  • Excellent demulsifying properties provide easy skimming and long bath life – can help to reduce maintenance and disposal cost
  • Suitable for low-temperature cleaning operations – can support sustainability agenda, i.e. helping to reduce energy cost and to improve CO2 footprint
  • Versatile; multi-metal compatibility and suitable in hard and soft water – enables possible product consolidation
  • Possibility of recycling the used cleaning solution into the Alusol and Hysol XBB coolants – can help to reduce operational cost through lowering waste volume and reducing fresh water consumption


Appearance: Clear, pale to light yellow liquid

Density @ 20c: 1.03 g/ml


Appearance (5% in DI-water): Translucent to hazy liquid

pH (5% in DI water): 9.9

Corrosion Protection (3% in DI water): Grade 0


Concentration Control:

By titration:

  1. Pipette 10 ml bath solution in a 250 ml Erlenmeyer flask and add 50 ml deionised DI-water
  2. Add 2 drops of indicator solution nitrazine yellow
  3. Titrate with hydrochloric acid (c = 0.1 ml/l) until colour changes from blue to yellow
  4. Calculation: Concentration in % = required ml hydrochloric acid * factor 0.63

Additional Information

In the case of recycling the used cleaner solution into the coolant system the concentration of the emulsion is maintained by adding Alusol XBB or Hysol XBB concentrate up to the set level.

For further advice please contact your local Castrol representative.


To avoid product deterioration always keep the container/drum tightly sealed. Store the product in a cool, dry place away from direct sunlight. Prevent exposure to frost and avoid water ingress. For optimum product stability, it is preferable to store the product indoors between 5°C and 45 °C / 41°F and 113°F.

For more details, please refer to the product safety data sheet.

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Product Data Sheet

Material Safety Data Sheet


Castrol Techniclean 90 XBC Metalwork Cleaner and Degreaser

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