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High Purity Strontium Chloride | Industrial & Lab Grade

Introduction to Strontium Chloride

Strontium chloride is a chemical compound with the formula SrCl₂. It is a salt of strontium and chlorine. As a Group 2 metal halide, it exhibits properties characteristic of ionic compounds, forming white, crystalline solids. Its anhydrous form, SrCl₂, and hexahydrate form, SrCl₂·6H₂O, are both of significant industrial importance. This compound is known for its high solubility in water and its role as a precursor in the synthesis of other strontium compounds, making it a versatile chemical across various B2B sectors. Its unique physical and chemical attributes, including its relatively low toxicity compared to other heavy metal chlorides and its ability to act as a mild Lewis acid, position it as a critical component in advanced material science, medical applications, and metallurgical processes. Fizachem specializes in providing high-purity strontium chloride tailored to the stringent requirements of diverse industrial applications.

Industry Trends in Strontium Compounds

The market for strontium chloride and other strontium compounds is experiencing dynamic growth, driven by several key industry trends. A significant trend is the increasing demand for advanced materials in electronics, particularly for specialized glass in cathode ray tubes (CRTs) and modern flat panel displays, where strontium is used to block X-rays. Although CRT demand has decreased, the use of strontium in new display technologies, such as certain OLED formulations and quantum dots, is emerging. Another strong driver is the healthcare sector, where strontium-based compounds are being explored for their osteoinductive properties in bone health and dental care, including formulations for sensitive teeth.

Furthermore, the metallurgy industry continues to utilize strontium for refining aluminum and magnesium alloys, improving their mechanical properties and castability. Environmental regulations are also influencing demand, with a shift towards less toxic compounds in various applications, where strontium compounds often present a more favorable profile than other heavy metals. Research and development into novel applications, such as in pyrotechnics for vibrant red coloration, specialized ceramics, and even in certain catalysts, continue to expand the market for strontium chloride and related strontium compounds. The global market size for strontium compounds was valued at approximately USD 450 million in 2022 and is projected to grow at a CAGR of over 4% from 2023 to 2030, highlighting a sustained demand across these key sectors.

High Purity Strontium Chloride | Industrial & Lab Grade

High-quality strontium compounds, crucial for various industrial applications.

Technical Specifications of Strontium Chloride

Understanding the precise technical specifications of strontium chloride is paramount for industrial applications where purity and exact chemical characteristics are critical. Fizachem's offerings adhere to stringent quality control measures, ensuring consistent performance. The primary forms include anhydrous strontium chloride (SrCl₂) and its hexahydrate (SrCl2·6H2O), each with distinct physical properties and applications.

Strontium Chloride (Anhydrous & Hexahydrate) - Typical Specifications
Parameter	Anhydrous SrCl₂	Hexahydrate SrCl₂·6H₂O
Chemical Formula	SrCl₂	SrCl₂·6H₂O
Molecular Weight	158.53 g/mol	266.62 g/mol
Purity (as SrCl₂)	≥ 99.0%	≥ 99.0%
Appearance	White crystalline powder	White crystalline solid
Density (anhydrous)	3.05 g/cm³	2.03 g/cm³
Melting Point	874 °C	61 °C (decomposes)
Solubility in Water (g/100 mL at 20°C)	53.8 g	48.3 g (as SrCl₂)
Heavy Metals (as Pb)	< 10 ppm	< 10 ppm
Insolubles	< 0.01%	< 0.01%

These specifications are crucial for optimizing processes in target industries like pharmaceuticals, pyrotechnics, and metallurgy. For instance, in sensitive applications, the absence of heavy metals is a critical parameter, demonstrating the expertise and quality control at Fizachem.

Manufacturing Process Flow of Strontium Chloride

The production of high-purity strontium chloride typically involves a multi-step chemical synthesis process starting from naturally occurring strontium minerals, primarily celestine (strontium sulfate, SrSO₄) or strontianite (strontium carbonate, SrCO₃). The process flow is meticulously managed to ensure product quality, meeting stringent testing standards like ISO 9001 for quality management systems.

Key Steps in Strontium Chloride Production:

1. Raw Material Preparation (Celestine Reduction)

Materials: High-grade celestine ore (SrSO₄) and reducing agents (e.g., coke or coal). Process: Celestine is heated with coke in a rotary kiln at temperatures typically above 1000 °C. This carbothermic reduction converts strontium sulfate to strontium sulfide (SrS), commonly known as "black ash." SrSO₄ (s) + 2C (s) → SrS (s) + 2CO₂ (g)

2. Dissolution and Filtration

Process: The "black ash" (SrS) is then leached with water, dissolving the strontium sulfide and forming a solution of soluble strontium hydrosulfide (Sr(HS)₂) and some impurities. This solution is filtered to remove insoluble residues. SrS (s) + 2H₂O (l) → Sr(HS)₂ (aq) + Sr(OH)₂ (aq)

3. Conversion to Strontium Carbonate

Process: Carbon dioxide gas is bubbled through the strontium sulfide solution, precipitating strontium carbonate (SrCO₃), which is insoluble. This step purifies the strontium intermediate. Sr(HS)₂ (aq) + CO₂ (g) + H₂O (l) → SrCO₃ (s) + 2H₂S (g) The H₂S by-product is typically captured and processed for environmental compliance.

4. Acid Treatment and Crystallization

Materials: Strontium carbonate (SrCO₃) and hydrochloric acid (HCl). Process: The purified strontium carbonate is reacted with hydrochloric acid to yield strontium chloride solution. This solution is then concentrated through evaporation and cooled to induce crystallization of SrCl₂·6H₂O. SrCO₃ (s) + 2HCl (aq) → SrCl₂ (aq) + H₂O (l) + CO₂ (g)

5. Drying and Dehydration (for Anhydrous)

Process: The crystallized SrCl2·6H2O is separated, washed, and dried. For anhydrous strontium chloride, the hexahydrate is further heated under controlled conditions to remove the water of crystallization, typically in a vacuum dryer or fluidized bed, ensuring minimal decomposition and high purity of the anhydrous product. SrCl₂·6H₂O (s) → SrCl₂ (s) + 6H₂O (g)

6. Quality Control and Packaging

Testing Standards: Each batch undergoes rigorous testing to meet specifications (e.g., ISO, ASTM, internal Fizachem standards) for purity, moisture content, heavy metals, and particle size. Service Life: When stored correctly in airtight container111s, anhydrous strontium chloride has a practically indefinite shelf life, while the hexahydrate remains stable for years. Target Industries: Petrochemical, metallurgy, water supply & drainage, pharmaceuticals, pyrotechnics, ceramics. Advantages: The meticulous process ensures high purity, critical for applications like energy saving in pyrotechnics (efficient color production) and corrosion resistance in metallurgical treatments (alloy stability).

Application Scenarios and Technical Advantages

Strontium chloride exhibits a diverse range of applications across multiple industries, a testament to its unique chemical properties. Fizachem's high-purity product ensures optimal performance in these demanding environments.

Metallurgy and Alloy Production: In the aluminum casting industry, sr chloride is used as a grain refiner and modifier for hypoeutectic and eutectic aluminum-silicon alloys. It improves the microstructure, leading to enhanced mechanical properties like tensile strength and ductility. This translates to more durable and lighter components for automotive and aerospace applications, offering significant energy saving benefits through reduced weight.
Pyrotechnics: It serves as a crucial component for producing vibrant red flames in fireworks and signal flares. The strontium ion (Sr²⁺) emits a characteristic bright red light when excited, making it indispensable for visual effects. Our consistent purity ensures predictable and intense coloration.
Dental and Oral Care: Hexahydrate SrCl2·6H2O is a key ingredient in desensitizing toothpastes and oral care products. It works by blocking exposed dentinal tubules, thereby reducing the sensitivity of teeth to hot, cold, or sweet stimuli. This application highlights its biocompatibility and efficacy in health products.
Specialty Glass and Ceramics: Used in the production of specialized glass for cathode ray tubes (CRTs) to block X-ray emissions and in certain ceramic glazes to enhance strength and chemical resistance. In glass manufacturing, its inclusion improves the optical properties and radiation shielding capabilities.
Electrolysis and Electroplating: In certain electrolytic processes, it can be used as an electrolyte component. For example, in the electrodeposition of strontium-containing alloys or coatings, strontium chloride provides a readily available source of strontium ions, contributing to improved corrosion resistance of the plated materials.
Chemical Synthesis: As a versatile precursor, it is used in the synthesis of other strontium compounds, such as strontium carbonate, strontium chromate, and strontium nitrate, which find further applications in paints, pigments, and propellants.

Technical Advantages of Fizachem Strontium Chloride:

High Purity: Our manufacturing process, validated by ISO 9001 certification, consistently yields strontium chloride with >99% purity, minimizing undesirable side reactions and maximizing desired outcomes in critical applications.
Consistent Quality: Rigorous batch testing ensures uniformity in physical and chemical properties, crucial for industrial processes requiring tight tolerances and reliable performance.
Optimized Particle Size Distribution: Customizable particle sizing available for specific applications, enhancing dissolution rates for liquid formulations or improving blend homogeneity in solid mixtures.
Low Impurity Profile: Especially low levels of heavy metals and other contaminants, making it suitable for pharmaceutical and food-grade precursor applications where safety and non-toxicity are paramount.
Excellent Solubility: Rapid and complete dissolution in water ensures efficient solution preparation, a significant advantage in chemical formulations and aqueous processing.

Vendor Comparison: Fizachem vs. Market Benchmarks

Selecting the right supplier for critical industrial chemicals like strontium chloride is a strategic decision that impacts product quality, operational efficiency, and cost-effectiveness. Fizachem differentiates itself through a commitment to superior product quality, robust supply chain management, and unparalleled customer support. Below is a comparative overview highlighting our competitive advantages.

Strontium Chloride Vendor Comparison
Feature/Parameter	Fizachem	Typical Competitor A	Typical Competitor B
Purity (SrCl₂)	≥ 99.5% (High Grade)	≥ 98.5%	≥ 99.0%
Heavy Metals (as Pb)	< 5 ppm	< 20 ppm	< 15 ppm
Certifications	ISO 9001, REACH compliant	Basic ISO 9001	None specified / Limited
Customization Options	Extensive (P.S., Packaging, Blends)	Limited	Minimal
Lead Time (Typical)	7-14 business days	14-28 business days	Variable, often longer
Technical Support	Dedicated expert team	Standard support	Basic support
Packaging Options	25kg bags, drums, bulk bags	Standard bags/drums	Limited standard options

This comparison underscores Fizachem's commitment to delivering not just a product, but a comprehensive solution. Our higher purity levels and lower impurity profiles, especially for heavy metals, are critical for industries with strict regulatory requirements, such as pharmaceuticals and specialized electronics. Our robust certifications and extensive customization options empower clients to optimize their processes and final products, providing a distinct competitive edge.

Customized Solutions and Application Case Studies

Fizachem understands that off-the-shelf solutions may not always meet the precise requirements of every industrial process. We specialize in providing customized strontium chloride solutions, adapting parameters such as particle size distribution, specific impurity thresholds, and specialized packaging to integrate seamlessly into client operations. Our engineering team works collaboratively with clients to develop specifications that optimize performance and efficiency.

Case Study 1: Enhanced Flame Retardant Additive for Polymers

Client Need: A leading polymer manufacturer required a highly stable and finely ground sr chloride to act as a synergistic additive in their flame retardant formulations for engineering plastics. The challenge was to achieve uniform dispersion and avoid agglomeration, which could compromise the mechanical properties of the final polymer.
Fizachem Solution: We provided a customized batch of anhydrous strontium chloride with a precisely controlled sub-micron particle size, achieved through advanced milling techniques. Our solution also included a specialized surface treatment to enhance compatibility with the polymer matrix, improving dispersion and reducing dust.
Results: The client reported a 15% improvement in flame retardancy (as measured by oxygen index) and a significant reduction in processing time due to improved dispersion. The modified polymer maintained its mechanical integrity, demonstrating the value of tailoring chemical inputs to specific industrial processes. This case highlights our experience in delivering precise material characteristics.

Case Study 2: High-Purity Precursor for Pharmaceutical Intermediate

Client Need: A pharmaceutical company required exceptionally high-purity SrCl2·6H2O for the synthesis of an experimental bone-regeneration compound. The critical requirements were extremely low heavy metal content (specifically lead and cadmium) and consistent assay percentage, exceeding typical industrial standards.
Fizachem Solution: Leveraging our advanced purification technologies, we produced a pharmaceutical-grade strontium chloride hexahydrate with heavy metal content well below USP/EP limits (e.g., <1 ppm for lead, vs. typical <10 ppm). Each batch was accompanied by a comprehensive Certificate of Analysis, including ICP-MS data for trace elements.
Results: The client successfully incorporated our product into their synthesis, achieving superior yields and purity in their final active pharmaceutical ingredient (API). The reduced impurity profile minimized downstream purification steps, saving significant time and cost. Our ability to meet stringent FDA and international pharmaceutical guidelines reinforced our authoritativeness in high-spec chemical supply.

Precision manufacturing and quality control ensure superior strontium chloride for demanding applications.

Frequently Asked Questions (FAQ)

Q1: What is the primary difference between anhydrous strontium chloride and its hexahydrate form?

A1: The primary difference lies in the presence of water molecules of crystallization. Anhydrous SrCl₂ (molecular weight 158.53 g/mol) is a dry, highly concentrated form, ideal for applications where water content must be minimized, such as in high-temperature reactions or as a desiccant. The hexahydrate, SrCl2·6H2O (molecular weight 266.62 g/mol), contains six water molecules per formula unit, making it heavier but often preferred for aqueous solutions due to its ease of dissolution and handling, especially in dental or biological applications where it's supplied in solution.

Q2: What quality standards does Fizachem adhere to for its strontium chloride products?

A2: Fizachem’s manufacturing processes are ISO 9001 certified, ensuring consistent quality management. Our products comply with international standards such as REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for the European market and often exceed typical industry-grade specifications, particularly for heavy metal impurities and assay purity, which is critical for sensitive applications like pharmaceuticals and electronics. We provide Certificates of Analysis for every batch.

Q3: Can Fizachem supply customized particle sizes or specific impurity profiles for strontium chloride?

A3: Yes, customization is a core service at Fizachem. We work closely with our clients to meet specific requirements for particle size distribution (from coarse granules to fine powders), moisture content, and stringent impurity limits. Our technical team is equipped to develop tailored solutions for unique application needs, ensuring optimal performance and compatibility with your existing processes.

Lead Time, Warranty, and Customer Support

Lead Time and Fulfillment

Fizachem maintains efficient production and logistics to ensure timely delivery of strontium chloride. Standard orders for in-stock products typically have a lead time of 7-14 business days from order confirmation to dispatch. For customized orders or large bulk quantities, lead times may vary but are communicated transparently and promptly. We utilize a robust global logistics network to facilitate smooth and reliable worldwide shipping. Clients receive tracking information and regular updates throughout the fulfillment process.

Warranty Commitments

Fizachem warrants that all strontium chloride products will meet the specifications outlined in our Certificates of Analysis and any mutually agreed-upon customized specifications. Our products are manufactured under strict quality control processes (ISO 9001 certified). In the unlikely event of a product not meeting its warranted specifications, Fizachem commits to investigating the issue promptly and providing a replacement or credit, subject to our standard terms and conditions. Our warranty ensures peace of mind regarding product quality and performance.

Fizachem's commitment to quality and customer satisfaction in strontium chloride supply.

Customer Support

Our dedicated customer support team and technical experts are available to assist with any inquiries, from product selection and technical specifications to logistics and after-sales support. We provide comprehensive technical documentation, safety data sheets (SDS), and certificates of analysis (CoA). For urgent queries, our team is accessible via phone and email during business hours, ensuring that your operations continue smoothly with minimal disruption. We pride ourselves on building long-term partnerships through responsive and knowledgeable support.

Contact Sales: sales@fizachem.com
Technical Support: support@fizachem.com
General Inquiries: info@fizachem.com

Citations

Greenwood, N. N., & Earnshaw, A. (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann.
"Strontium Compounds Market Size, Share & Trends Analysis Report." Grand View Research, Inc.
"Strontium Chloride." PubChem, National Library of Medicine.
"The use of strontium in bone health: an overview." Royal Society of Chemistry.
"Effect of Strontium Chloride on Dental Hypersensitivity: A Randomized Controlled Clinical Trial." Journal of Clinical Periodontology.

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