KESTER 2331-ZX Soldering Flux

Harmonization Code : 29051200 | Propan-1-ol (propyl alcohol) and propan-2-ol (isopropyl alcohol)

Main features

Neutral pH
Minimal foaming
Low-odor emission

Product Description

Kester 2331-ZX solder lfux has an organic acid water-soluble chemistry, formulated specifically for soldering circuit board assemblies. Its neutral pH formulation delivers exceptional performance and cleanliness, making 2331-ZX a trusted choice across multiple industries.

Product Key Features

Neutral pH formulation, ensuring ionic cleanliness.
Minimal foaming
Low-odor emission
Classified as ORH1 per industry standards.

Applications

Ideal for high-performance and sensitive circuit assemblies.

Note: Due to changes in REACH Regulations, this product is no longer sold into Europe or to European customers.

Specifications
Additional Information

Technical Specifications

General Properties
Solids	33 %
Specific Gravity Specific Gravity Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.	0.899
Thermal Properties
Flash Point Flash Point The flashpoint of a solvent is the lowest possible temperature at which it can vaporize to form an ignitable vapor. Flashpoint is often confused with “autoignition temperature”, which is the temperature at which a solvent ignites without an ignition source.	16 °C

Additional Information

Application

2331-ZX can be applied to circuit boards by a dip, foam or wave process. An air knife after the flux tank is recommended to remove excess flux from the circuit board and prevent dripping on the preheater surface.