Description

Tin Fluoroborate is an inorganic salt primarily used as a soluble source of tin ions in specialized electroplating and surface treatment processes. Its high solubility and stability in acidic solutions make it a critical component for depositing uniform, adherent tin and tin alloy coatings. This compound is essential for manufacturers in the electronics, automotive, and metal finishing industries seeking reliable performance in plating baths.

Application

• Tin and Tin Alloy Electroplating: A key electrolyte component for depositing pure tin, tin-lead, or tin-copper alloys onto conductive substrates.
• Printed Circuit Board (PCB) Manufacturing: Used in the plating of through-holes and surface finishes to ensure solderability and corrosion resistance.
• Bearing and Automotive Component Coatings: Provides wear-resistant and low-friction tin coatings on engine bearings and other precision parts.
• Metal Surface Pretreatment: Acts as an activating agent or conversion coating to improve adhesion for subsequent plating layers.
• Specialty Chemical Synthesis: Serves as a fluorinating agent or catalyst precursor in certain organic and inorganic synthesis reactions.
• Conductive Coatings for Electronics: Enables the deposition of conductive tin layers on connectors and electromagnetic shielding components.

Basic Information

Product Name	Tin Fluoroborate
CAS No.	13814-97-6
Molecular Formula	Sn(BF4)2 (commonly supplied in aqueous solution)
Molecular Weight	292.32 g/mol (anhydrous)
Synonyms	Stannous Fluoroborate; Tin(II) Fluoroborate; Tin Bis(tetrafluoroborate); Fluoroboric Acid Tin(2+) Salt; Tin Difluoroborate; Tin Tetrafluoroborate; Tin BF4; Electroplating Grade Tin Salt
EINECS	237-487-6

Quality Control

Our Tin Fluoroborate is manufactured under strict process controls to ensure batch-to-batch consistency and high purity, suitable for demanding industrial applications. Quality is verified through a comprehensive suite of analytical tests including assay, heavy metal limits, and solution stability checks. A Certificate of Analysis (COA) documenting all relevant specifications is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and organic solvents. The aqueous solution is typically stable at room temperature (15-25°C). For long-term storage, keep containers tightly sealed to prevent evaporation or absorption of moisture.

Specification

Item	Specification
Appearance	Clear, colorless to slightly yellow aqueous solution
Assay (as Sn(BF4)2)	≥ 45% - 50% (or as specified)
Tin (Sn) Content	≥ 20% w/w
Free Fluoroboric Acid	≤ 2%
Iron (Fe)	≤ 50 ppm
Lead (Pb)	≤ 50 ppm
Copper (Cu)	≤ 10 ppm
Specific Gravity (at 20°C)	1.60 - 1.65
pH (of solution)	< 1

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.