Industry-Verified Manufacturing Data (2026)

Chrome Tanning Agent Solution

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Chrome Tanning Agent Solution used in the Tanning and Dressing of Leather sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Chrome Tanning Agent Solution is characterized by the integration of Chromium Sulfate Complex and Basicity Modifier. In industrial production environments, manufacturers listed on CNFX commonly emphasize Chromium(III) sulfate construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Industrial chromium-based chemical solution for leather tanning

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Product Specifications

Technical details and manufacturing context for Chrome Tanning Agent Solution

Definition
A standardized aqueous solution containing trivalent chromium salts, primarily chromium(III) sulfate, used as the primary tanning agent in modern leather production. This chemical converts raw animal hides into stable, durable leather through cross-linking collagen fibers. It provides superior hydrothermal stability, uniform penetration, and consistent quality compared to vegetable tanning methods. The solution is engineered for precise concentration control in industrial tanning drums and automated processing systems.
Working Principle
Trivalent chromium ions form coordinate covalent bonds with collagen carboxyl groups, creating stable cross-links that prevent putrefaction and impart thermal stability
Common Materials
Chromium(III) sulfate, Sodium formate, Water
Technical Parameters
  • Chromium oxide (Cr2O3) content (%) Per Request
  • Solution density at 20°C (°Bé) Per Request
Components / BOM
  • Chromium Sulfate Complex
    Primary tanning agent forming collagen cross-links
    Material: Chromium(III) sulfate octadecahydrate
  • Basicity Modifier
    Controls neutralization level for penetration control
    Material: Sodium formate or sodium bicarbonate
  • Solvent Medium
    Carrier for uniform distribution in tanning drums
    Material: Deionized water
  • Stabilizing Agent Optional
    Prevents precipitation and maintains solution homogeneity
    Material: Organic acid salts
Engineering Reasoning
1.2-3.5 bar at 35-45°C
Chromium(III) precipitation at pH > 4.2 or Cr(VI) formation at redox potential < -0.74V vs SHE
Design Rationale: Chromium(III) hydroxide precipitation due to pH shift beyond solubility product (Ksp = 6.3×10⁻³¹) or hexavalent chromium reduction at Eh < -0.74V
Risk Mitigation (FMEA)
Trigger Sulfuric acid dosing pump calibration drift exceeding ±0.5% FS
Mode: pH excursion to 4.5 causing Cr(OH)₃ precipitation and solution viscosity increase to >150 cP
Strategy: Redundant pH probes with 4-20mA HART transmitters and automated acid dosing PID control with ±0.1 pH deadband
Trigger Redox potential controller failure maintaining Eh at -0.8V for >15 minutes
Mode: Cr(VI) reduction to Cr(III) exceeding 8% concentration loss per hour
Strategy: ORP electrode with platinum sensing element and automated sodium dichromate dosing at Eh threshold -0.72V

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Chrome Tanning Agent Solution.

chrome tanning liquor chromium tanning solution basic chromium sulfate solution chrome tanning agent solution for leather chromium sulfate leather tanning chemical industrial chrome tanning solution suppliers chromium oxide content tanning agent basic chrome sulfate tanning solution

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 2 bar (max)
flow rate: 0.5-5 m³/h per unit
temperature: 15-35°C (optimal), 5-45°C (operational)
slurry concentration: 5-25% solids by weight
Media Compatibility
✓ Stainless Steel 316L ✓ Polypropylene (PP) ✓ High-Density Polyethylene (HDPE)
Unsuitable: Aluminum or copper alloys (due to chromium corrosion)
Sizing Data Required
  • Daily leather processing volume (kg)
  • Target chromium oxide concentration in final leather (%)
  • Available tank/reactor volume (m³)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced leakage
Cause: Chrome tanning agents (chromium salts) are highly corrosive and acidic (pH 2-4). Prolonged exposure to stainless steel or mild steel components (pumps, valves, piping) leads to pitting, crevice corrosion, and eventual failure of seals and gaskets, especially at joints and welds.
Crystallization and clogging
Cause: Evaporation or temperature fluctuations cause chromium salts to crystallize and precipitate out of solution. This leads to buildup in pipes, nozzles, valves, and pump internals, restricting flow, increasing pressure, and causing mechanical blockages or abrasive wear.
Maintenance Indicators
  • Visible greenish stains or weeping at pipe joints, pump seals, or tank seams, indicating active corrosion and potential leakage.
  • Audible pump cavitation (gurgling/knocking) or reduced flow rate, signaling crystallization buildup or partial blockages in the system.
Engineering Tips
  • Use corrosion-resistant materials: Specify high-grade stainless steel (e.g., 316L, duplex) or lined (PTFE, rubber) components for all wetted parts. Ensure proper passivation and avoid galvanic couples.
  • Maintain solution stability: Control temperature within a narrow range (per manufacturer specs) and avoid stagnant conditions. Implement regular flushing with compatible solvents (e.g., diluted acid) to prevent crystallization, especially after shutdowns.

Compliance & Manufacturing Standards

Reference Standards
ISO 5398-1:2018 Leather - Chemical determination of chromium oxide content - Part 1: Quantification by titration ASTM D2807-93(2021) Standard Test Method for Chromic Oxide in Leather (Perchloric Acid Oxidation) DIN 53314:1996 Testing of leather - Determination of the chromium(VI) content
Manufacturing Precision
  • Chromic oxide concentration: +/- 0.5% by mass
  • pH value: +/- 0.2 units
Quality Inspection
  • Atomic Absorption Spectroscopy (AAS) for chromium content verification
  • pH measurement and titration for alkalinity/acidity control

Factories Producing Chrome Tanning Agent Solution

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

P Procurement Specialist from Germany Jan 31, 2026
★★★★★
"Testing the Chrome Tanning Agent Solution now; the Chromium Oxide Content (%) results are within 1% of the laboratory datasheet."
Technical Specifications Verified
T Technical Director from Brazil Jan 28, 2026
★★★★★
"Impressive build quality. Especially the Chromium Oxide Content (%) is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from Canada Jan 25, 2026
★★★★★
"As a professional in the Tanning and Dressing of Leather sector, I confirm this Chrome Tanning Agent Solution meets all ISO standards."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

10 sourcing managers are analyzing this specification now. Last inquiry for Chrome Tanning Agent Solution from Thailand (49m ago).

Frequently Asked Questions

What is the typical chromium oxide content in this chrome tanning agent solution?

The chromium oxide (Cr₂O₃) content typically ranges from 20-25%, providing optimal tanning efficiency while maintaining leather quality and environmental compliance.

How does the basicity percentage affect leather tanning results?

Basicity (typically 33-40%) determines the solution's reactivity and penetration rate. Higher basicity improves chromium fixation and reduces effluent, while lower basicity enhances penetration in dense hides.

What safety precautions are required when handling this chrome tanning solution?

Use PPE (gloves, goggles, protective clothing), ensure proper ventilation, avoid skin contact, and follow local regulations for chromium compound handling and wastewater treatment to prevent environmental contamination.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Tanning and Dressing of Leather sector.

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