Import Blackfast Chemical — Buy in Bulk from Supplier in India

Blackfast chemical is a proprietary formulation designed for chemical blacking of iron and steel surfaces, producing a uniform black oxide finish that enhances both appearance and corrosion resistance. The product is applied through immersion or spraying and operates effectively at ambient temperatures, with typical processing times under 10 minutes per batch. It is compatible with mild steel, cast iron, and low-alloy steels, and does not require high-temperature curing. The solution is water-based and contains no chromates or heavy metals.

The active ingredients include iron salts and proprietary organic inhibitors that promote controlled oxidation, forming a magnetite layer on the metal surface. This layer is typically 0.5 to 1.5 micrometers thick, aligning with standard industrial blackening practices. The finish is not a paint or coating but a surface conversion, making it durable under mechanical stress and compatible with subsequent oil or wax sealing. It is commonly used in environments where visual uniformity and rust inhibition are critical, such as firearm components, fasteners, and automotive parts.

Buyers in the automotive, defense, and precision engineering sectors use this chemical to finish components requiring non-reflective surfaces and corrosion resistance. It is supplied in 20-liter drums or 200-liter totes, with recommended storage between 5°C and 30°C. The product is not classified as hazardous under GHS, but requires standard industrial handling precautions. Buyers should confirm the exact concentration and dilution ratio with the supplier, as performance varies with application method and substrate condition.

Purshotam Pvt. Ltd. is a chemical supplier based in Kolkata, West Bengal, with a registered address at 3, Lyons Range. The company is listed as an imported supplier with harbor trust tier, indicating it has passed basic compliance checks for export documentation. There is no public information on its founding date, workforce size, or production capacity. The supplier does not claim certifications such as ISO or environmental accreditations in the listing, nor does it reference any client names or export volumes.

The supplier's response rate and average response time are recorded as zero, suggesting limited or no direct communication capability through the platform. Buyers should treat this as a trading entity that facilitates bulk chemical shipments rather than a manufacturer with technical support. All product performance claims must be verified through sample testing or third-party lab reports before bulk procurement.