Chromium (III) Nitrate, primarily handled as Chromium (III) Nitrate Nonahydrate [$\text{Cr(NO}_3)_3 \cdot 9\text{H}_2\text{O}$], represents one of the most vital trivalent chromium derivatives used in chemical synthesis, catalyst design, and metal finishing. With its CAS Registry Number 7789-02-8, this compound occurs as dark violet monoclinic crystals that display exceptional water solubility and hydroscopic capabilities.
From a structural and toxicological standpoint, Chromium (III) Nitrate contains chromium in its $+3$ oxidation state. Trivalent chromium is widely acknowledged as an essential trace element and is thermodynamically stable. It offers an environmentally compliant alternative to hexavalent chromium ($\text{Cr}^{6+}$), which faces severe global regulatory restrictions (such as REACH and RoHS directives) due to its carcinogenic and mutagenic profiles. For industrial chemical consumers, sourcing reliable, low-impurity Chromium (III) Nitrate is essential for maintaining catalytic activity and preventing downstream process contamination.
"The transition from hazardous hexavalent chrome formulations to stabilized trivalent chromium nitrate systems has driven a 14.2% increase in industrial nitrate consumption, positioning high-purity inorganic metal salts as key elements of clean chemistry."
The commercial production of high-grade Chromium (III) Nitrate requires precise control over pH, raw material purities, and crystallization kinetics. The primary synthesis pathway involves the chemical reduction of chromium trioxide ($\text{CrO}_3$) in the presence of nitric acid ($\text{HNO}_3$) and a reducing agent (such as sucrose, ethanol, or hydrogen peroxide), or directly dissolving high-purity chromium hydroxide [$\text{Cr(OH)}_3$] in concentrated nitric acid:
$\text{Cr(OH)}_3 + 3\text{HNO}_3 + 6\text{H}_2\text{O} \rightarrow \text{Cr(NO}_3)_3 \cdot 9\text{H}_2\text{O}$
At YANXA, we utilize advanced crystallization techniques to manage trace metal impurities. The presence of trace chlorides ($\text{Cl}^-$) and sulfates ($\text{SO}_4^{2-}$) can degrade the performance of catalysts and metal conversion coatings. Our quality assurance protocol includes multi-stage washing, recrystallization, and automated analytical testing via Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Ion Chromatography.
| Parameters | Industrial Grade Specs | Catalyst / Reagent Grade Specs |
|---|---|---|
| Assay [as $\text{Cr(NO}_3)_3 \cdot 9\text{H}_2\text{O}$] | ≥ 98.0% | ≥ 99.5% |
| Insoluble Matter in Water | ≤ 0.05% | ≤ 0.005% |
| Chloride ($\text{Cl}^-$) | ≤ 0.01% | ≤ 0.002% |
| Sulfate ($\text{SO}_4^{2-}$) | ≤ 0.03% | ≤ 0.005% |
| Iron ($\text{Fe}$) | ≤ 0.02% | ≤ 0.002% |
| Heavy Metals (as $\text{Pb}$) | ≤ 0.005% | ≤ 0.001% |
Chromium (III) Nitrate is used across several processing sectors globally:
The global Chromium (III) Nitrate market is evolving to meet stricter environmental guidelines. Regulatory pressure on hexavalent chromium has accelerated research into trivalent chromium compounds. The automotive industry, in particular, is transitioning to Chromium (III) Nitrate formulations to ensure compliance with international environmental standards.
Looking forward, the demand for chromium-based materials is growing in energy storage technologies, such as advanced redox flow batteries, and in the synthesis of metal-organic frameworks (MOFs) for gas purification. As an established supplier, YANXA is investing in energy-efficient production methods and closed-loop water treatment facilities to minimize the environmental footprint of our operations.
Yanxatech System Industries Limited (YANXA) is a growing supplier of specialty materials in China. Established in 2008, the company has expanded from a local business unit into an international supplier serving the chemical and manufacturing sectors. Over the past decade, YANXA has built partnerships with leading research centers and ISO-certified manufacturers to deliver reliable industrial products.
Our product catalog includes liquid rubbers, metallic powders, specialty alloys, and inorganic metal salts like Chromium (III) Nitrate. We focus on matching customer specifications, ensuring prompt deliveries, and adhering to strict environmental and safety regulations.
Quality, safety, and operational efficiency are the core principles of our business. We work closely with our clients to understand their raw material needs and provide customized solutions for new applications.
Working with chemical compounds requires a high level of safety control. YANXA complies with national and international transport regulations (such as IMDG and IATA guidelines for hazardous materials) to ensure all chemicals are handled, packed, and shipped safely, protecting both handlers and the environment.
Product Characteristics: Formaldehyde is a colorless, pungent liquid that is easily polymerized and soluble in water, alcohol, and ether. In air, it oxidizes to formic acid and acts as a reducing agent. Its boiling point is -19°C, freezing point is -118°C, and relative density compared to air is 1.067.
Commercially, it is supplied as formalin, a 37-50% formaldehyde solution containing a small amount of methanol to inhibit polymerization. The solution is clear to slightly milky white and has a strong odor. Formalin vaporizes readily, releasing formaldehyde gas. Its boiling point is 96°C, relative density is 0.815 (-20°C), and its flash point is 55°C.
Product Overview: Hexamethylenetetramine, also known as hexamine or HMTA, is a white crystalline powder produced by the reaction of formaldehyde and ammonia. It is a versatile organic intermediate used in industrial manufacturing, pharmaceutical synthesis, rubber vulcanization, and analytical chemistry.
Product Features: A white crystalline powder with a mild formaldehyde odor. It is a linear polymer of formaldehyde without a fixed melting point.
| Item Specifications | Grade A (≥96%) | Grade B (≥92%) |
|---|---|---|
| Appearance | White powder / solid | White powder / solid |
| Content | ≥ 96.0% | ≥ 92.0% |
| Solubility | ≤ 40 minutes | ≤ 40 minutes |
| Formic Acid | ≤ 0.05% | ≤ 0.05% |
| pH Range | 5.0 - 7.0 | 5.0 - 7.0 |
This alloy powder is processed using atomization technology to produce spherical particles. It features uniform particle size distribution, high active metal content, and low moisture absorption, making it suitable for applications in pyrotechnics, chemical synthesis, and metallurgy.
We offer Chromium (III) Nitrate in both Industrial and Reagent/Catalyst Grades. The Reagent Grade features a purity level of ≥99.5%, with controlled limits on trace metals, iron, and chloride impurities to suit sensitive catalytic applications.
Our prices are subject to change based on raw material costs, freight rates, and market trends. Contact our team with your product specifications to receive an updated quote.
Yes, we require an ongoing minimum order quantity for international orders. For small trials or distributor quantities, please contact our sales office to discuss delivery options.
Yes, we can provide Certificates of Analysis (COA), Certificates of Conformance (COC), safety data sheets, insurance documents, certificates of origin, and other necessary export documentation.
For samples, the lead time is approximately 7 days. For mass production, the standard lead time is 20-30 days after receipt of the deposit. Lead times take effect once we receive deposit payment and final technical approval. If our schedule does not meet your deadline, please discuss potential solutions with our sales managers.
We accept bank transfers (T/T) with a 30% deposit in advance and the remaining 70% balance payable against the copy of the Bill of Lading (B/L), or an irrevocable Letter of Credit (L/C) at sight.
We guarantee the quality of our materials and manufacturing. Our goal is to ensure client satisfaction with every delivery. In the event of quality discrepancies, our technical service team works to resolve customer concerns.
We use industrial-grade, UN-approved export packaging. For hazardous materials or temperature-sensitive items, we utilize specialized containers and cold-storage options. Specialized packaging requirements may incur additional charges.
Yanxatech
