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Alcohol-based flux EO-B-023C (multiflux)

Recommended method of application
Wave, selective and manual soldering processes as well as cable assembly

No Clean-Flux, alcohol-based
Resin-carboxylic and di-carboxylic acid complex, halogenide-free (WEEE/RoHS compliant)
Type ISO-9454: 1231 (1.2.3.A) // DIN EN-61190-1-1 (acc. J-STD-004) (IEC: REL0)

Cat.-No. 6144

Technical Data

Appearance/smell: transparent to yellowish, amber liquid
Hazardous goods: Yes
Solids content: 4.0 wt.-%
Acid number: 10 – 12 mg KOH/g
Halogenide-free: Yes
Resinous: Yes
Available as concentrate: Yes
Density at 20 °C: 0.795 (+/- 0.003) g/ml
Flash point: 12 °C
Durability: 12 months
Storage (recommendation): store at 5 – 25 °C, dry, sealed


EO-B-023C is universally suitable for wave, selective and hand soldering of PCBs and complies with specification DIN-EN 61190-1-1: L0. Accordingly, it contains organic, halogen-free activating additives with resin in a combination specially tuned to the thermal requirements of the soldering processes. EO-B-023C can be applied by brushing, spraying, dipping etc. The solids content is 4 wt.-%. EO-B-023C is totally free from corrosion action. Additional information on the ingredients (hazardous substances), safe handling, storage, transport and disposal can be found in the current safety data sheet (SDS, SDS, MSDS).

This flux is very versatile. There are good results for manual, wave and selective soldering as well as for cable assembly / wire tinning. The general rule of applying fluxes applied in principle as low as possible also applies to this product.

Sprayfluxing: If possible, try at first a quantity of 15 – 30 ml/min. and observe the distribution of the flux. After that, correct the quantity. Air-pressure: 18 – 20 l/min.

Preheating: Entering the solder-wave, the temperature on the topside of the pasteboards should be 80 – 110 °C, dependent on type of boards, layout etc. In case of using lead-free solders, preheating temperatures of 100 – 130 °C on the topsides are possible.

Customer added value

  • Wide range of applications (multiflux)
  • Very good soldering properties (capillarity, wetting)
  • Available as concentrate (granulate)
  • Broad process window (very high thermal stability, good activity over a long interval)
  • Very good residue behavior (very clean, high SIR)
  • Successful passing of internal test (SIR selective)

Packaging units

Granulate: for 20 l
Canister: 5 l, 20 l