Aluminum Diethyl Phosphinate

Aluminum Diethyl Phosphinate

    Specifications
    HS Code 209052
    Chemical Formula Al(C2H5O2P)3
    Molecular Weight 303.14 g/mol
    Appearance white powder
    Melting Point 235 - 245 °C
    Density 1.25 g/cm³
    Solubility insoluble in water, soluble in some organic solvents
    Thermal Stability good thermal stability
    Flame Retardancy effective flame retardant
    Low Toxicity low toxicity to organisms
    Ph In Solution neutral to slightly acidic in some cases

    As an accredited Aluminum Diethyl Phosphinate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Aluminum Diethyl Phosphinate in 1 - kg bags, suitable for chemical applications.
    Storage Aluminum diethyl phosphinate should be stored in a cool, dry, well - ventilated area. Keep it away from sources of ignition, heat, and moisture as it may react. Store in a tightly - sealed container to prevent exposure to air, which could potentially lead to degradation. It should be separated from incompatible substances like strong oxidizers to avoid dangerous reactions.
    Shipping Aluminum Diethyl Phosphinate is shipped in accordance with strict hazardous materials regulations. It's packaged securely in appropriate containers to prevent leaks. Special handling procedures ensure safe transportation to avoid any chemical - related risks.
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    Aluminum Diethyl Phosphinate Aluminum Diethyl Phosphinate
    General Information
    Historical Development
    Aluminum diethyl phosphonate was synthesized in the laboratory by chemists in the late 20th century. At first, its use was not yet extensive, and only scholars focused on the wonders of fire resistance and flame retardancy. By the time the technology advanced in the new century, the plastics industry was booming rapidly, and halogens, which are common in traditional flame retardants, could not meet the needs of environmental protection. Therefore, the superiority of aluminum diethyl phosphonate began to show. It is not harmful to halogens, but also has the power of efficient flame retardancy. Companies from all over the world are competing to study and optimize its synthesis process, so that its purity and performance are improving day by day. The market demand is booming, and the application fields range from cables and electronics to automotive parts, which is necessary to improve safety. Today, aluminum diethyl phosphonate has become one of the advanced flame retardant materials, making more and more contributions to fire safety in industrial and civil fields. Its historical development shows the track of technological innovation and industrial upgrading.
    Product Overview
    Aluminum diethyl phosphonate is a white powder synthesized from aluminum ions and diethyl phosphonate. It has stable properties and is slightly soluble in water. It is often used for flame retardancy of polymer materials. Its function is outstanding, it does not melt in case of fire, releases phosphorus at high temperature, produces phosphonic acid and phosphoric acid, retards combustion, and has no halogen disadvantages and no cloudy odor. It can be used in polyamide and polyester resins to significantly improve the flame retardant grade without damaging its function. Good dispersion and easy process, so it is widely adopted in the fields of equipment, cables, construction, etc. Products that seek safety and environmental protection rely more on this material, and its security effect is enhanced.
    Physical & Chemical Properties
    Aluminum Diethyl Phosphinate, white powder, sweet and tasty. Stable in nature, soluble in water, easily soluble in ethanol and acetone. Its melting temperature is 240 degrees, high degree of decomposition, and it is not easy to decompose. In case of acid or acid, there is a slight hydrolysis phenomenon, and it is left in the air for a long time, its properties are fixed, and it is not easy to decompose. The flame resistance is very high, and it can be used as a flame retardant. Polymer materials have good compatibility, and the combination of oxygen and nitrogen is not effective. It is often low in chemical stability, and it is slightly reversed in case of oxidation. Its particle size is low, and its dispersion is good, which is convenient for industrial use. It is used to increase the flame retardant performance of materials and improve the good performance of polymer materials.
    Technical Specifications & Labeling
    Aluminum diethylphosphinic acid, white powder, chemical formula C6H15AlO6P2, molecular weight 246.10. Its phosphorus content (by mass) is often 22.5-23%, aluminum content is about 12.5-13%. Moisture does not exceed 0.5%, decomposition temperature is about 300 ° C, does not melt at high temperature, excellent heat resistance. Particle size distribution is fine, D50 is about 11 microns, bulk density is usually between 0.4-0 g/cm ³. pH value is suspended at 6.0-8. Insoluble in polar and non-polar solvents, and should be protected from moisture and light for storage. Packaging is mostly lined with polyethylene bags and covered with woven bags, with a net weight of 20 kg per bag. Its performance is stable, suitable for use in engineering plastics, rubber and other refractory products, with excellent flame retardancy and low smoke properties. All products are accompanied by batch numbers and quality inspection reports for identification.
    Preparation Method
    Aluminum diethyl phosphonate is prepared by taking aluminum trichloride as the aluminum source, diethyl phosphonic acid as the main material, and dissolving it in an appropriate amount of organic solvent. First, phosphonic acid and aluminum salt are mixed at room temperature or under heating conditions, and diethyl phosphonic acid solution is slowly added dropwise to the aluminum salt solution to control the stirring and temperature to make it fully contact. In the meantime, the meridian complexation reaction generates aluminum diethyl phosphonate precipitation. Weak bases such as sodium hydroxide are often used to adjust the pH in the process to facilitate the complete reaction, and then filtered, washed, and dried to obtain the finished product. If a catalytic system is used, quaternary ammonium salts or certain amines are often used as catalysts to accelerate the complexation reaction between phosphorus carboxyl groups and aluminum ions. The catalytic mechanism is based on coordination exchange. Catalysts participate in the reaction to form temporary complexes, reduce the activation energy of the reaction, and finally precipitate the main product rapidly. In this way, high-purity aluminum diethyl phosphonate can be obtained in several steps.
    Chemical Reactions & Modifications
    Aluminium diethyl phosphonate has stable properties and is widely used in flame retardant materials. Its preparation is made by the reaction of diethyl phosphonic acid and aluminium salt, white powder, insoluble in water. When heated, phosphorus is released to form phosphoric acid and related derivatives, which has the effect of inhibiting combustion. If blended with polymers, it can be surface modified, such as grafted silanes, coupling agents, etc., to make it affinity with organic matrices, enhance dispersion, and improve flame retardancy and mechanical properties. Chemical modification methods are diverse, or alcoholysis, esterification, or grafting with organic functional groups to adjust polarity and enhance thermal stability and compatibility. Aluminium diethyl phosphonate is used in combination with metal oxides to synergistically delay thermal decomposition and form a tough carbon layer. Therefore, in engineering plastics and electronic rubber shells, it has become increasingly effective in its modification, and is widely used in AppCloud.
    Synonyms & Product Names
    Diethylphosphinic acid aluminum salt、Aluminum bis(diethylphosphinate)、Diethylphosphinic acid, aluminum salt、Phosphinic acid, diethyl-, aluminum salt、Exolit OP 930、Exolit OP 935、Exolit OP 1230、Exolit OP 1240、Mflam 1530(等效产品)、Phosphinic acid, P,P-diethyl-, aluminum salt (3:1)、Tri[diethylphosphinate]aluminium、Aluminum tris(diethylphosphinate)
    Safety & Operational Standards
    Aluminum diethylphosphinate is a halogen-free flame retardant with the advantages of good thermal stability and non-toxicity. When operating, it should be carried out in a well-ventilated place, wearing protective equipment such as gloves and safety glasses to avoid inhaling dust and contact with skin and eyes. Its packaging is usually a paper-plastic composite bag, which should be stored in a ventilated, cool and dry place. It should not be stored together with oxidizing substances and should not be mixed during transportation. In the event of a leak, personal protective equipment must be used, unprotected personnel must be kept away, and the leak must be treated with a neutralizer. The contaminated materials must be disposed of as waste in accordance with regulations.
    Application Area
    Aluminum diethyl phosphonate has excellent flame retardant effect and is widely used in today's processes. It is stable and refractory in case of fire, so it is suitable for plastics, resins and rubber. All electronic appliances, transportation, and building materials rely on it to increase safety. Used in polyester, nylon, polyolefin and other polymers, it can give the main body flame retardant and self-extinguishing. Collaborative fillers are shared, which increases the toughness of physical machinery. It can be seen in electronic components, cable coatings, and interior accessories of automobiles. It is also respected by environmental protection norms because of its low smoke and low toxicity. It has gradually become a widely used material in emerging industries such as high-speed rail, aviation, and communications. Its contribution to social stability is particularly indispensable.
    Research & Development
    Aluminum diethylphosphonate is a new material in the field of modern chemical industry. Its stability, high temperature resistance, and flame retardant effect are widely valued by scholars. Since its inception, many wise men have dedicated themselves to studying its molecular structure and deducing the reaction mechanism, not only simplifying the synthesis route, but also striving to improve the purity and performance. Recently, green processes have been used to improve its preparation, reduce by-products, and improve yield. Widely used, involved in plastics, resins, cables, etc., which in turn help electronics, transportation, construction and many other industries. The scientific research team pooled the wisdom of the crowd and worked together to develop new composite materials, strengthening both flame retardancy and environmental friendliness. The development of archaeology today is gradual, supplemented by theory and practice, promoting aluminum diethylphosphinic acid to demonstrate excellent competitiveness in the international market, benefiting the country and the people, and has broad prospects.
    Toxicity Research
    Aluminum diethylphosphonate is a newly used flame retardant in modern times, and its properties are stable. It is widely used in polymer materials. However, its toxicity is not fully understood, so scholars have devoted themselves to the study of its rationality. The experiment took mice as the main body, and different doses were given by gavage to detect its acute toxicity. The results showed mild stimulation, more than high doses of anorexia, gradual weight loss, but no sudden death. When the cell activity was observed in vitro, it could cause mild cytotoxicity at high concentrations, but the effect of common doses was weak. There was no significant abnormality in biochemical indicators such as liver and kidney function. Although long-term exposure occasionally caused mild changes in the morphology of liver cells, no obvious inflammatory reaction was seen. In summary, aluminum diethylphosphonate has limited toxicity under routine use, but high-dose cumulative exposure may be slightly harmful, and it should be carefully protected to ensure health.
    Future Prospects
    Aluminum diethyl phosphonate is an emerging flame retardant material with good properties, excellent thermal stability, and no toxic smoke when burned. Today's technology is new and its application is becoming wider, regardless of electronics, building materials, transportation, and textiles. Its flame retardant performance complements the concept of environmental protection, and should be in line with the trend of green manufacturing. Looking to the future, with the advancement of science and technology, functional composite improvement is in the ascendant. Its compounding with polymers or mixed with new materials will definitely make the flame retardant effect even better than before. With the growth of industrial demand and the expansion of international markets, aluminum diethyl phosphonate will replace traditional halogen-containing flame retardants to a clean, safe, and reusable road. If we can continue to innovate, reduce costs and increase efficiency, there will be broad prospects and lead the new era of materials.
    Where to Buy Aluminum Diethyl Phosphinate in China?
    As a trusted Aluminum Diethyl Phosphinate manufacturer, we deliver: Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements. Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery. Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
    Frequently Asked Questions

    As a leading Aluminum Diethyl Phosphinate supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.

    What are the main uses of Aluminum Diethyl Phosphate?
    Aluminum Diethyl Phosphate, more accurately referred to as Aluminum Diethyl Phosphinate in chemical terminology, is a widely used halogen-free flame retardant with excellent thermal stability and flame-retardant efficiency, making it indispensable in various industrial fields. Its primary application lies in the polymer material industry, where it is extensively incorporated into engineering plastics and polymers to enhance their fire resistance. For instance, it is commonly added to polyamides (such as PA6, PA66), polyesters (like PET, PBT), and epoxy resins. By inhibiting the spread of flames and reducing smoke generation during combustion, it helps these materials meet strict fire safety standards, which is crucial for products used in electrical and electronic equipment, automotive parts, and building materials—areas where fire risk mitigation is paramount. In addition, this compound finds use in textile and fiber processing. When applied to synthetic fibers (e.g., polyester, nylon), it imparts flame-retardant properties to fabrics, making them suitable for upholstery, curtains, and industrial textiles that require fire resistance. Its compatibility with fiber materials ensures minimal impact on the mechanical properties and appearance of the textiles. It also plays a role in coatings and adhesives. By blending it into coating formulations or adhesive systems, manufacturers can improve the fire resistance of these products without compromising their adhesion or durability. This is particularly valuable for coatings used in construction (e.g., wall coatings) and adhesives for electrical components, where both functional performance and fire safety are essential. Furthermore, due to its low toxicity and environmental friendliness compared to halogenated flame retardants, it aligns with global trends toward eco-friendly materials. This has expanded its application in consumer goods, such as household appliances and furniture, where regulatory requirements for non-toxic and low-pollution additives are increasingly stringent. Overall, Aluminum Diethyl Phosphinate’s versatility, efficiency, and environmental compatibility make it a preferred choice for enhancing fire safety across a diverse range of materials and products.
    What are the Physical and Chemical Properties of Aluminum Diethyl Phosphate?
    Aluminum diethyl phosphonate, chemical formula C4H10AlO4P, commonly known as aluminum diethyl phosphonate, is one of the phosphonate flame retardants. This material is white or off-white powder with dense crystalline structure and uniform particles. It is stable at room temperature and pressure, slightly hygroscopic, not easily soluble in cold water, slightly soluble in hot water, and also insoluble in organic solvents such as alcohols and ketones. The melting point is about 300 ° C, the decomposition temperature can exceed 350 ° C, and it is not easy to burn in case of open flame. Aluminum diethyl phosphonate has a density of about 1.3 g/cm ³, and has no significant odor. Its chemical properties are stable, and it is not easy to react with acids and alkalis in general environments. It is easily decomposed by strong acids and alkalis. After thermal decomposition, phosphonate esters and phosphorus oxides can be released, which can synergistically promote the carbonization of polymer materials, thereby forming a carbon layer, preventing flame propagation, and has excellent flame retardant properties. It is often used as a halogen-free environmentally friendly flame retardant in the modification of plastics, rubber, fibers and other materials. This salt is non-volatile, resistant to ultraviolet radiation, not easy to migrate, has no obvious toxicity, and has good compatibility. It does not decompose when heated during processing to ensure the stability of material properties. In case of high temperature or strong oxidant, there is still a risk of decomposition. It should be stored in a cool, dry and sealed place to prevent moisture absorption and deliquescence. In terms of thermodynamic properties, it has high specific heat capacity and decomposition endothermic effect, which can absorb a lot of heat and delay the combustion time of the material. The apparent index and other characteristics also vary slightly with the preparation conditions. All in all, aluminum diethylphosphonate has stable properties, excellent performance, and unique physical and chemical properties, but it needs to be properly stored and standardized to ensure its flame retardant efficacy and safe application.
    What are the storage and transportation requirements for Aluminum Diethyl Phosphates?
    The storage and transportation of Aluminum Diethyl Phosphinate (often referred to as Aluminum Diethyl Phosphate in industrial contexts) require strict adherence to specific guidelines to ensure safety, stability, and product integrity. Environment Conditions: It should be stored in a well-ventilated, cool, and dry warehouse. The ideal storage temperature is between 5°C and 30°C, with relative humidity below 70% to prevent moisture absorption, which could cause caking or degradation. Direct sunlight and heat sources (such as radiators or open flames) must be avoided, as prolonged exposure to high temperatures may affect its thermal stability. Packaging Integrity: The product is typically packaged in multi-layered bags (e.g., paper-plastic composite bags with an inner polyethylene liner) to resist moisture and physical damage. Unsealed packages must be tightly closed after partial use to prevent contamination or absorption of atmospheric moisture. Segregation: It must be stored separately from strong oxidizing agents, acids, alkalis, and combustible materials to avoid potential chemical reactions. Additionally, it should be kept away from food, feed, or pharmaceuticals to prevent cross-contamination. Shelf Life Management: Under proper storage conditions, the shelf life is usually 24 months from the production date. Stock should be rotated using the "first-in, first-out" principle to ensure older batches are used before expiration. Mode of Transport: It is classified as a non-hazardous material for transportation (according to UN regulations), but it should be transported via covered vehicles (e.g., enclosed trucks or containers) to shield from rain, snow, or direct sunlight. Handling During Transit: Avoid rough handling, dropping, or crushing packages to prevent leakage of the powdery substance. During loading and unloading, use appropriate equipment (e.g., forklifts with pallet forks) to minimize manual lifting and reduce the risk of package damage. Compatibility: Do not transport it with oxidizers, corrosives, or flammable goods in the same vehicle. In case of accidental spillage during transit, the affected area should be isolated, and spilled material should be collected with clean tools (avoiding dust dispersion) and disposed of according to local waste management regulations. Documentation: Transport documents should include product identification, quantity, and safety notes (e.g., "keep dry" or "avoid extreme temperatures") to guide handlers. Adhering to these storage and transportation requirements ensures the product remains stable, reduces safety risks, and maintains its performance for industrial applications such as flame-retardant formulations.
    How is the environmental protection and safety of Aluminum Diethyl Phosphate?
    Aluminum Diethyl Phosphate exhibits favorable environmental protection and safety profiles compared to traditional halogenated flame retardants, making it a preferred choice in eco-conscious industries. In terms of environmental impact, it is classified as a halogen-free compound, meaning it does not release toxic halogenated gases (such as dioxins or furans) during combustion—substances known to persist in the environment and cause long-term ecological harm. Its degradation pathways are relatively benign: studies indicate that under natural conditions, it breaks down into non-toxic byproducts like phosphates, which are less likely to accumulate in soil or water ecosystems. This aligns with global regulations restricting halogenated substances, such as the EU’s RoHS and REACH directives, enhancing its suitability for environmentally sensitive applications. Regarding safety, it has low acute toxicity: oral and dermal toxicity tests show high LD50 values, indicating minimal risk from accidental ingestion or skin contact. It is not classified as a carcinogen, mutagen, or reproductive toxin under major regulatory frameworks (e.g., OSHA, ECHA). However, like many fine powders, prolonged inhalation of its dust may irritate the respiratory tract, requiring proper ventilation and personal protective equipment (e.g., dust masks) during handling. It is also non-flammable and non-reactive with most common substances, reducing the risk of fire or chemical hazards in storage and transport. For occupational safety, adherence to standard handling protocols—such as avoiding direct contact, using gloves, and ensuring workspace ventilation—effectively mitigates potential risks. Its compatibility with various polymers and low leaching tendency further minimize secondary environmental contamination during product lifecycle, from manufacturing to disposal. Overall, Aluminum Diethyl Phosphinate balances high flame-retardant efficiency with strong environmental and safety credentials, supporting its adoption in industries prioritizing sustainability and worker protection.
    How much is the addition amount of Aluminum Diethyl Phosphate?
    The addition amount of Aluminum Diethyl Phosphate varies significantly depending on the application scenario, base material type, and specific flame-retardant requirements, typically ranging from 10% to 35% by weight. In engineering plastics such as polyamides (PA6, PA66) and polyesters (PBT, PET), the addition amount is usually 15% to 25%. This range balances flame retardancy and material performance—sufficient to meet UL94 V-0 standards while minimizing negative impacts on mechanical properties like tensile strength and impact resistance. For instance, in PA6 used for electrical connectors, 20% addition often achieves the desired fire safety without excessive brittleness. In epoxy resins, which are widely used in electronics and coatings, the dosage tends to be higher, around 20% to 30%. Epoxy systems require more flame retardant to counteract their inherent flammability, especially when used in thick-walled components or high-temperature environments. For some low-flammability base materials or applications with lower fire safety standards, the addition amount can be reduced to 10% to 15%. Conversely, in demanding scenarios such as aerospace or automotive parts requiring strict flame spread and smoke density control, the dosage may reach up to 35%. It’s important to note that the addition amount is often adjusted in combination with other synergists (e.g., melamine derivatives or inorganic fillers) to optimize efficiency, reduce costs, and maintain material processability. Specific dosages should be determined through formulation testing based on target performance criteria.