Otto's Original - Quality products since 1901

RS-4004 (Multiflux)

No clean, alcohol-based flux, synthetic resin, di-carboxylic acids,
minimal resin content
WEEE/RoHS compliant type ISO-9454: 2231 /
DIN EN 61190-1-1 (acc. J-STD-004): L0 (ORL0)

Packaging units:
20 l
optionally available as dispenser bottle or flux pen
Application area: Wave- and selective soldering, manual- and repair soldering, dip soldering
Appearance/smell: colourless to light yellow, clear
Solids content: 3.5 Gew.-% (wt.-%)
Density at 20 °C: 0.797 (+/- 0.003) g/ml
Acid number: 23 – 27 mg KOH/g
Activators: di-carboxylic acids, minimal resin content
Solvents: short-chain alcohols
Flash point: 12 °C
Durability: 12 months
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The RS-4004 has been developed for use with wave and selective soldering. In addition, it can be used for manual and dip soldering. All the conventional application methods can be used. The solids content amounts to 3.5 wt.-%. The soldering flux contains a corrosion inhibitor.

Customer added value:

  • Very wide range of applications (multiflux)
  • Very good soldering properties (capillarity, wetting)
  • Broad process window (very high thermal stability, very high activity over a long interval)
  • Good residue behaviour (very clean, high SIR)
  • Successful passing of internal test (SIR selective)


Questions about our products?
We will advise you by phone 06123 / 7046-0.