Construction Grade Iron Oxide Black 330 Pigment for Making Bricks and Building Materials

Product Introduction

Tian Hui Bao iron oxide black is high-purity synthetic magnetite inorganic pigment, specially developed for construction, anti-corrosion coating and polymer coloring. It delivers pure deep matte black without gray or brown undertone, no blue floating phenomenon under light. Adopting controlled precipitation + high-temperature crystal shaping + ultrafine airflow grinding triple refining process, eliminate coarse particles and unstable crystal impurities, realize consistent particle size distribution, zero batch color difference for large-scale repeated orders.

As inert eco-friendly pigment with magnetic crystal structure, it owns dual advantages of coloring and anti-rust shielding. Compatible with all water-based and oil-based resin systems, no flocculation, precipitation or stratification after mixing. The crystal lattice can absorb nearly 96% harmful UV rays, with outstanding outdoor weather resistance, acid-alkali corrosion resistance and salt spray resistance. After over 10 years outdoor exposure under high-low temperature alternation, heavy rain and wind erosion, no chalking, fading, powder peeling or color graying. Widely used in exterior wall black matte paint, black colored pavement, metal anti-rust primer, rubber plastic black coloring, black concrete and asphalt admixture.

Pure Matte Deep Black, Zero Color Deviation

Most low-grade iron black has gray floating and uneven black tone due to incomplete crystal formation. Our iron black undergoes static powder aging and multi-channel spectrophotometer color grading, presenting stable calm jet black matte effect without surface reflection. Every production batch strictly controls color difference △E≤0.8, top pigment tolerance standard, guarantee uniform black coloring for continuous mass production, eliminate color mismatch rework cost for paint and concrete factories.

Superior Anti-rust & Alkali Resistance

Unique magnetite crystal structure provides physical shielding protection for metal substrates, significantly improving anti-corrosion performance of industrial anti-rust coatings. Keep stable in pH 12–14 high alkali cement environment, no pigment migration, alkali whitening or mottling inside concrete structure even after long-term buried damp use. Perfectly solve the problem of black building surface fading and graying in coastal saline-alkali regions.

Easy Dispersion, No Hard Agglomerates

Standard 1250 mesh ultrafine airflow grinding replaces traditional ball milling, avoid irreversible hard lumps caused by mechanical extrusion. Long-term sealed storage keeps powder loose and smooth. Only 3–5 minutes low-speed stirring can achieve full uniform dispersion in water/oil systems, no extra dispersant required, reduce customer raw material cost and production time.

Non-toxic Eco-friendly & High Cost Performance

Pass SGS heavy metal detection, zero lead, cadmium, chromium residue, non-toxic, odorless, meet EU REACH, RoHS, California Prop 65 environmental standards, smooth customs clearance for global cross-border trade. Hiding power far exceeds carbon black for outdoor use, lower addition dosage to reach full black coverage, reduce long-term mass production cost.

Wide Application Scenarios

Construction: Black colored concrete blocks, permeable pavement, black terrazzo, asphalt coloring, roof tiles Coating & Paint: Exterior matte black latex paint, industrial metal anti-rust primer, road marking black paint, waterproof coating Polymer Materials: Rubber seals, plastic masterbatch, PVC black profiles, plastic pipe coloring Other Fields: Ceramic black glaze, art gypsum, magnetic coating auxiliary pigment

Technical Specifications

Storage, Packaging & Shipping

Packaging: 25kg PE lined waterproof paper bag, custom printed labels available; palletized packing for sea transport anti-extrusion. Storage: Dry ventilated warehouse, away from moisture and strong acid, seal after opening; shelf life 36 months under standard storage. Shipping: Non-dangerous goods, full set of MSDS and customs documents provided, support full container, less container and air delivery.

After-sales Service

Free 100–500g test samples; pre-shipment batch color re-inspection; one-stop pigment matching technical support for all industry formulas.