Printing & Dyeing Solid Sodium Formate

Printing & Dyeing Solid Sodium Formate — High-Purity Textile Grade | Stable Reducing Agent & pH Buffer Solution

Printing & Dyeing Solid Sodium Formate (HCOONa, CAS 141-53-7) is a high-purity crystalline organic salt engineered for the demanding chemical requirements of the textile coloration industry. With a purity of ≥96.0–98.0%, iron content strictly controlled below 0.005%, and moisture below 0.5%, this product delivers the precision that modern dye houses require. Produced by Shanxi Zhaoyi Chemical Co., Ltd. — founded in 1988 with 30+ years of acetate and formate manufacturing experience — it is available in 25 kg woven bags and 1,000 kg ton bags, with a standard production lead time of 5–7 working days.

Technical Specifications

What Is Printing & Dyeing Solid Sodium Formate?

This product is a specialized textile-grade formulation of sodium formate, not a generic industrial variety. It functions primarily as a buffered reducing agent and pH regulator within dye liquors and printing pastes.

Unlike standard industrial grades, this formulation prioritizes the removal of heavy metal impurities — particularly iron and calcium — which directly degrade dye vibrancy and color consistency. Even trace iron at levels above 0.005% can cause irreversible "saddening" or dulling of bright shades on cellulosic and blended fabrics.

Its special Reducibility-Stability Balance, implies that it has a sufficiently high reduction potential at high temperatures, such as used for discharge printing and sulfur dyeing, but is nevertheless entirely stable at room temperature. This makes it more safer and easy to store than volatile alternatives such as sodium hydrosulfite.

Product Characteristics

The physical form is a white, deliquescent crystalline powder with high solubility, designed for rapid and uniform dispersion in dye liquors. Its slightly alkaline buffering capacity (pH 7.0–8.5 in solution) actively protects textile fibers from acid hydrolysis during high-temperature steaming processes.

The low moisture specification (<0.5%) is critical for flowability. Sodium formate is naturally hygroscopic, so strict moisture control during production and packaging prevents caking — a common cause of feed failures in automated dosing systems used in modern continuous dyeing lines.

Its chemical stability at ambient temperatures means you can store and handle it safely without the spontaneous combustion risks associated with sodium hydrosulfite, while still achieving full reducing power at elevated process temperatures.

Application in Textile Printing & Dyeing

Discharge Printing (Flash Aging)

In high-speed rotary printing lines, this product is incorporated into the printing paste to chemically destroy ground-color dye in targeted patterns during steaming. The result is crisp, clean white or colored discharges without fiber structure degradation — a performance that standard industrial sodium formate cannot reliably deliver.

Eco-Friendly Reducing Agent for Sulfur Dyes

As a sodium formate dyeing auxiliary supplier, we position this product as a cleaner substitute for sodium sulfide in reducing sulfur dyes to their soluble leuco forms. This is particularly important for B2B export textiles where brands operating under OEKO-TEX regulations strictly control sulfur residues and odors in finished fabrics.

Reactive Dyeing Buffer in Pad-Steam Processes

In continuous dyeing environments, rapid pH swings after alkali shock can cause uneven exhaustion of reactive dyes. This product acts as a neutralizing buffer that stabilizes pH, maximizes color yield, and improves rubbing fastness on cotton fabrics. It directly addresses the "wind printing" defect caused by uneven reduction rates in vat dye processes.

Printing & Dyeing Solid Sodium Formate vs Other Products

Quality Control Standards

Rigorous quality control is applied across every batch to ensure consistent textile performance.

Iron (Fe) Analysis: Spectrophotometric verification confirms iron levels remain below 0.005%. High iron content irreversibly dulls bright shades — a critical defect in premium fabric production.

Water Insoluble Matter Testing: Limits are enforced at <0.05% to prevent clogging of fine-mesh rotary screens in printing machines, avoiding costly production stoppages.

Purity & Reducing Power Verification: Titration using KMnO₄ confirms formate content, enabling precise dosage calculation for reduction baths.

Whiteness Index Measurement: Instrumental measurement ensures no organic char particles are present in Printing & Dyeing Solid Sodium Formate that could stain delicate or light-colored fabrics.

Certifications & Compliance

Shanxi Zhaoyi Chemical Co., Ltd. maintains the following management system certifications:

• ISO 9001 — Quality Management System
• ISO 14001 — Environmental Management System
• ISO 45001 — Occupational Health and Safety Management System

Kosher Certification

Halal Certification (for applicable product grades)

Full documentation support is available, including multilingual MSDS, COA, and conformity documents. On-site factory audits by domestic and international customers are welcomed and supported.

Packaging & Storage

Packaging options:

• 25 kg plastic woven bag (with inner PE liner)
• 1,000 kg ton bag

Storage requirements: Store in a cool, dry, well-ventilated warehouse below 30°C and below 60% relative humidity. Keep tightly sealed to prevent moisture absorption. Store separately from toxic substances. Handle with care during transport to avoid bag damage.

Why Choose Shanxi Zhaoyi Chemical?

With over 30 years in formate and acetate production, a 27,000 m² facility, and an annual capacity of 150,000 tons, you get a supplier who understands both chemistry and industrial-scale reliability. As a trusted sodium formate dyeing auxiliary supplier, we offer:

• Flexible order sizes with 5–7 working day lead times
• 24-hour delivery for in-stock orders
• 24/7 technical consultation support
• OEM labeling and custom packaging
• Competitive pricing backed by large-scale, optimized production
• Global export experience covering Europe, Americas, and Asia

FAQ

Q: How does the product compare to sodium hydrosulfite in safety?

A：It is significantly more stable and non-flammable, eliminating the spontaneous combustion risks of hydrosulfite. It does require higher temperatures to activate its reducing power, but this makes it far safer for storage and automated handling in modern dye houses.

Q: Why does anti-caking performance matter so much for this product?

A：Sodium formate is hygroscopic by nature. If moisture control and packaging are inadequate, it hardens into blocks that cause feed failures in automated dosing systems. Our strict moisture specification (<0.5%) and PE-lined bags directly address this issue.

Q: Can this product help reduce COD levels in wastewater?

A：Yes. It is fully biodegradable and contributes significantly less recalcitrant chemical load to wastewater treatment systems compared to sulfide-based reducers — an important advantage for environmentally regulated production facilities.

Q: What happens if I use leather-grade sodium formate for textile dyeing?

A：Leather grades permit higher impurity levels that react negatively with textile dyestuffs. You risk iron spotting and noticeable color shifts on finished fabric. Always confirm the textile-specific grade when sourcing sodium formate for printing and dyeing applications.

Q: What is the optimal storage condition for maintaining shelf life?

A：Store below 30°C and 60% relative humidity in tightly sealed bags with PE liners. Exposure to moist air rapidly degrades flowability and purity, reducing performance in the dye bath.

Q: Do you support sample testing before a bulk order?

A：Yes. Sample testing support and technical consultation for specific dyeing applications are available. Contact our team to discuss your process requirements and request a sample.

Contact Us

Ready to source reliable Printing & Dyeing Solid Sodium Formate for your textile operations? Contact us at sxzy@sxzhaoyi.com  — our team responds within 2 hours.