Iron Oxide Black 713: Concrete Technical Specifications

Engineering Reliable Black Color for Demanding Concrete Applications

Concrete producers need pigments that deliver consistent black coloration while maintaining structural integrity under harsh conditions. Iron oxide black 713 answers this demand with exceptional weather resistance, UV stability, and dispersibility tailored for outdoor coatings and high-exposure concrete surfaces. As a Chinese manufacturer with 25 years specializing in iron oxide pigments, Hebei Tianhuibao Technology Co., Ltd. produces iron oxide black 713 at our 15,000 square meter facility, exporting to 150+ countries with 50,000+ tons annual capacity.

Construction professionals, formulators, and quality engineers rely on precise iron oxide black 713 specifications for particle size, tinting strength, chemical resistance, and mixing guidelines. Whether coloring traffic markings, architectural panels, or industrial flooring, iron oxide black 713 ensures deep, durable black that withstands UV radiation, temperature cycling, precipitation, and mechanical wear. Backed by ISO 9001, REACH, and RoHS certifications, our five-stage quality control guarantees batch consistency throughout production.

This reference provides concrete-ready data—physical properties, chemical composition, dosage rates, dispersion techniques, and testing protocols—for mission-critical projects demanding reliable performance from day one.

Chemical Identity and Composition Standards

Iron oxide black 713 carries CI Pigment Black 11 designation, consisting primarily of magnetite (Fe3O4) with controlled crystalline structure. Hebei Tianhuibao Technology Co., Ltd. achieves high purity through synthetic precipitation and calcination across 15 automated production lines. This eliminates impurities that compromise color stability in alkaline concrete environments.

 Surface treatment creates a protective layer blocking UV penetration and resisting acid rain across pH 4-12 range. Synthetic iron oxide black 713 delivers predictable performance as concrete cures under variable site conditions, unlike natural alternatives with inconsistent chemistry.

 REACH compliance ensures safe use in public infrastructure concrete without leaching risks.

Particle Characteristics and Color Performance

Iron oxide black 713 features optimized particle engineering preventing agglomeration while maximizing tinting strength in concrete mixes.

 The 0.3-0.8 μm D50 range balances hiding power with flowability—finer particles risk water demand increases; coarser ones create visible specks in finished surfaces. Surface area provides high tinting strength for jet-black opacity at 2-5% cement replacement rates.

 Neutral black minimizes undertones, ensuring consistent appearance across production batches.

Performance Ratings for Concrete Applications

Iron oxide black 713 excels where concrete faces environmental extremes:

 As UV absorber, iron oxide black 713 protects concrete binders from photodegradation. Field exposure maintains ΔE < 3.0 after 3 years vs. 8-10 for standard blacks. Abrasion resistance withstands 5000 cycles for industrial floors and traffic areas.

Concrete Performance Impact:

• Dosage: 1-5% cement weight
• Compressive Strength: 98-102% of control
• Water Demand Increase: < 2%
• Setting Time Effect: None

No adverse curing effects; compatible hydration with cement phases.

Complete Specification Reference Table

 Concrete Mixing and Dosage Guidelines

Recommended Dosage by Application:

 Step-by-Step Dispersion:

• Pre-wet iron oxide black 713 with 20-30% mixer water (high shear)
• Add to dry aggregates, mix 2 minutes
• Incorporate cement, continue 3 minutes
• Add balance water/admixtures, final mix 5 minutes
• Target slump unaffected (±25mm)

Proven Mix Compatibility:

• Portland cement (Types I-V)
• Pozzolanic cements
• Fly ash/slag blends (≤40%)
• All water reducer classes

Quality Control and Batch Certification

Hebei Tianhuibao Technology Co., Ltd. applies five-stage QC to every iron oxide black 713 batch:

• Raw material inspection (ferrous purity)
• In-process particle monitoring
• Finished product specification testing
• COA certification and release
• 100% lot traceability (5+ year records)

Available Documentation:

• ISO 9001:2015 Certificate
• REACH Registration
• RoHS Compliance Statement
• EN 71-3 Heavy Metals
• ASTM Weathering Protocols

Certificate of Analysis ships with every order.

Accelerated Performance Validation

 Storage, Safety, and Logistics Data

Shelf Life: 24 months (dry, ventilated storage)
Packaging: 25kg bags, 500kg jumbos, 1-ton FIBCs
Safety: Non-hazardous GHS, non-irritant OECD 404
Transportation: Non-dangerous goods

Ordering Details:

• MOQ: 25kg
• Samples: 50-100g free (freight collect)
• Lead Time: 3-5 days stock
• Payment: T/T standard

Technical Support Services Available

Hebei Tianhuibao Technology Co., Ltd. R&D team provides:

• Concrete dispersion trials
• Color matching services
• Mix design optimization
• Field performance audits

Specify Iron Oxide Black 713 for Proven Results

Iron oxide black 713 delivers concrete professionals the technical reliability required for high-exposure applications. Download full specification sheets or request samples for immediate validation.

Contact Hebei Tianhuibao Technology Co., Ltd. for technical consultation, pricing, and delivery scheduling.