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Alcohol- and water-based flux EO-Y-004 (multiflux)

Recommended method of application
Wave and selective soldering

No Clean-Flux, alcohol- and water-based
Di-carboxylic acids, resin-free, halogen-free (WEEE/RoHS compliant)
Type ISO-9454: 2131 \ DIN EN 61 190-1-1 (ORL0)

Cat.-No. 6025

Technical Data

Appearance: colourless to light yellow, clear liquid
Hazardous goods: No
VOC: 6 %
Solids content: 3.5 – 3.7 wt.-%
Acid number: 28 – 32 mg KOH/g
Halogen-free: Yes
Resiny: No
Density at 20 °C: 0.9 – 1.0 g/ml
Activators: di-carboxylic acids, resin-free, halogen-free
Solvents: short-chain alcohols and water
Flash point: hardly flammable
Available as concentrate: No
Durability: 12 months


The hybrid EO-Y-004 flux was developed to be used in wave and selective soldering. It exhibits a solids content of 3.5 – 3.7 wt.-%. It has been developed for a very broad range of applications. The soldering properties are very good, particularly with rise-through and circuit-board wetting. The processing window is very broad with great thermal stability. Practice has shown that with proper application, no washing of circuit boards soldered with this flux is needed. The circuit boards are visually clean. The flux is available as a ready-to-use-mix or in a granulate-based concentrate.

Customer added value

  • Very good soldering properties (capillarity, wetting)
  • Available as concentrate (granulate)
  • Broad process window (high thermal stability, good activity over a long interval)
  • Very good residue behaviour (optically very clean, high SIR)

Packaging units

Granulate: for 10 l
Canister: 20 l