KESTER 1429
Harmonization Code : 3208.20.90 | Paints and varnishes that are dispersed or dissolved in a non aqueous medium

Main features
- VOC-Free Water-Based Fluxing
- Self-Neutralizing Post-Solder Residue
- Water-Only Residue Removal
Product Description
Kester 1429 VOC-Free Organic Water-Soluble Liquid Flux is a water-based, high-activity flux for tinning, dipping, and soldering processes that require water-removable residues. Its self-neutralizing chemistry develops a neutral, non-corrosive residue when properly heated, while adjusted surface tension supports solder flow and control of icicling and bridging. The ORH1 flux contains a typical 18% solids and can be applied by spray, dip, or wave methods. It may be used without preheating and can be diluted for supported applications. Applications include tinning and dipping operations and soldering tasks where rosin flux is too inactive and inorganic acid flux is too corrosive.
Key features
- VOC-Free Water-Based Flux: Water-based ORH1 chemistry provides high activity without an organic-solvent carrier.
- Water-Removable Residue: Residue can be removed with water without neutralizers, saponifiers, or detergents.
- Self-Neutralizing Chemistry: Proper heating develops a neutral, non-corrosive residue with no SIR degradation.
Applications / Suitable for
- Tinning and dipping operations
- Spray, dip, or wave fluxing
- Water-wash soldering processes
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Typical liquid-flux properties and handling limits before soldering.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Flux classification | ORH1 | J-STD-004 | |
| Specific gravity | 1.061 +/- 0.010 | At 25 deg C | |
| Typical solids | 18 | % | J-STD-004; IPC-TM-650 Method 2.3.34 |
| Chloride and bromides | 2.3 | % | IPC-TM-650 Method 2.3.35 |
| Minimum storage temperature | 4 | deg C | Water-based formulation |
| Shelf life | 2 | years | Stored at 4 to 25 deg C |





















