Mono Pentaerythritol 93 99 Min Micronized

Mono-Pentaerythritol 93-99% min.(Micronized)

    Specifications
    HS Code 903620
    Name Mono - Pentaerythritol 93 - 99% min. (Micronized)
    Chemical Formula C5H12O4
    Molecular Weight 136.15 g/mol
    Appearance White powder (micronized form)
    Melting Point 260 - 262 °C
    Boiling Point 380.4 °C at 760 mmHg
    Solubility In Water Soluble
    Density 1.39 g/cm³
    Flash Point 195.7 °C
    Ph Aqueous Solution Neutral
    Purity 93 - 99% min
    Particle Size Micronized Fine particle size

    As an accredited Mono-Pentaerythritol 93-99% min.(Micronized) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Encapsulate Mono-Pentaerythritol 93-99% min.(Micronized), industrial grade uses plastic woven bags with inner film, tied with ropes; food grade uses polyethylene bags, and the outer box is printed with the "food additive" logo, all to prevent pollution.
    Storage Store Mono-Pentaerythritol 93-99% min.(Micronized) in a dry and ventilated warehouse, put the bags on wooden pallets, and stack no more than five layers, moisture-proof and sun-proof, and avoid odorous items.
    Shipping Transport Mono-Pentaerythritol 93-99% min.(Micronized) in clean trucks, separate food grade and industrial grade, cover with tarpaulin to avoid rain, unload gently to prevent damage, and collect when scattered.
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    Competitive Mono-Pentaerythritol 93-99% min.(Micronized) prices that fit your budget—flexible terms and customized quotes for every order.

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    Mono-Pentaerythritol 93-99% min.(Micronized) Mono-Pentaerythritol 93-99% min.(Micronized)
    General Information
    Historical Development
    Ancient sweeteners used honey and sucrose. In recent times, low-calorie sweeteners and chemical raw materials are needed. Craftsmen have developed pentaerythritol, which was originally a crude product with insufficient purity. After a century of process improvement, high-purity Mono-Pentaerythritol can now be produced. After micronization, Mono-Pentaerythritol 93-99% min. (Micronized) was born to meet the needs and became an important material for food and chemical industry.
    Product Overview
    Mono-Pentaerythritol 93-99% min. (Micronized) is a white ultrafine powder, odorless, sweet, easily soluble in water, difficult to dissolve in ethanol, with polyol characteristics, high reactivity, purity range 93-99%, micronized form makes it dissolve faster and disperse more evenly, and is mostly used in food additives, surfactants, and explosive intermediates.
    Physical & Chemical Properties
    Mono-Pentaerythritol 93-99% min.(Micronized) Density 1.35g/cm³, Melting point 260-262℃, Particle size 2-8μm, Sublimes easily when heated, Stable chemical properties at room temperature, Non-flammable, Moderate hygroscopicity, Easy to absorb moisture and agglomerate in the air, Need to be sealed for storage.
    Technical Specifications & Labeling
    Mono-Pentaerythritol 93-99% min.(Micronized) Standard, Purity 93-99%, Moisture ≤0.5%, Ash ≤0.1%, Particle size D50≤5μm, Full name Mono-Pentaerythritol 93-99% min.(Micronized) must be written on the label, with Purity range, Particle size test report and applicable grade attached.
    Preparation Method
    Mono-Pentaerythritol 93-99% min.(Micronized) is prepared by using formaldehyde and acetaldehyde as raw materials, condensing under the catalysis of sodium hydroxide to generate crude pentaerythritol, which is purified by ion exchange resin, dried after crystallization, and then ultrafinely crushed to obtain Mono-Pentaerythritol 93-99% min.(Micronized). The reaction pH and crushing particle size are controlled to adapt to different purity requirements.
    Chemical Reactions & Modifications
    Mono-Pentaerythritol 93-99% min.(Micronized) contains four hydroxyl groups, which can react with fatty acids to generate ester surfactants, react with nitric acid to generate nitrate esters as explosive components, and can be compounded with flame retardants to enhance the density of the carbon layer. It does not react with metals at room temperature and is stable in storage.
    Synonyms & Product Names
    Mono-Pentaerythritol 93-99% min.(Micronized) in trade and technical documents, the full name Mono-Pentaerythritol 93-99% min.(Micronized) must be written to indicate its purity, form and chemical structure.
    Safety & Operational Standards
    When operating Mono-Pentaerythritol 93-99% min.(Micronized), dust masks and gloves must be worn, the food-grade operation area must be clean to avoid impurity contamination, wash hands after work, store in graded storage areas, isolate food-grade and industrial-grade, and handle waste in accordance with regulations.
    Application Area
    Mono-Pentaerythritol 93-99% min. (Micronized) food grade is used as a sweetener and moisturizer in candies and baked goods; industrial grade is used to make alkyd resins, synthetic lubricants, and explosives. It is widely used in surfactants, coatings, and pharmaceuticals. Different purities are suitable for different scenarios. 93% grade is mostly used in industry, and 99% grade can be used in food and high-end chemicals.
    Research & Development
    Artisans are researching the optimization of the crystallization process of Mono-Pentaerythritol 93-99% min. (Micronized) to improve the yield of high-purity products. At the same time, they are developing low-energy micronization technology, exploring its application in 3D printing materials and biodegradable plastics, and expanding its functional boundaries.
    Toxicity Research
    Mono-Pentaerythritol 93-99% min.(Micronized) has extremely low toxicity, and the food grade has been tested by toxicology. The rat oral LD50 is greater than 15000mg/kg. It is non-carcinogenic and non-mutagenic, non-irritating to the skin and eyes, and meets the safety standards for food additives. It is safe and harmless under standardized operation.
    Future Prospects
    With the development of the food industry and fine chemicals, the demand for Mono-Pentaerythritol 93-99% min.(Micronized) will increase by 7% annually. Its production process will develop in the direction of biosynthesis, reduce costs, and reduce pollution. High-purity products may play a greater role in the field of biomedicine. Micronization technology will be further improved to adapt to more sophisticated application scenarios.
    Where to Buy Mono-Pentaerythritol 93-99% min.(Micronized) in China?
    As a trusted Mono-Pentaerythritol 93-99% min.(Micronized) 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 Mono-Pentaerythritol 93-99% min.(Micronized) 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 requirements for purity classification when preparing Mono-Pentaerythritol 93-99% min.(Micronized)?
    This product is made by using formaldehyde (concentration 37%) and acetaldehyde (purity 99%) as raw materials, and undergoing condensation reaction under alkaline conditions (sodium hydroxide solution, concentration 10%) to produce a crude product: formaldehyde and acetaldehyde are added into a reactor at a molar ratio of 4:1, the temperature is raised to 60℃, sodium hydroxide solution is slowly added dropwise to adjust the pH value to 8.5, and the reaction is stirred for 3 hours. The resulting crude product is centrifuged (speed 1200 rpm) to remove the waste liquid and obtain crude pentaerythritol crystals. Subsequently, it is purified by multi-step crystallization and classification: in the first step, the crude product is dissolved in 80°C hot water with a solid-liquid ratio of 1:4, and stirred for 30 minutes to completely dissolve it. The residue is removed by filtering through an 800-mesh filter cloth, and the filtrate is introduced into a crystallization tank, cooled to 40°C at a rate of 2°C/hour, and kept at a constant temperature for 2 hours to precipitate primary crystals, and a product with a purity of 99% is obtained after separation; in the second step, the mother liquor after separating the primary crystals is introduced into another crystallization tank, and the temperature is further reduced to 20°C, and the temperature is kept constant for 3 hours to precipitate secondary crystals, and a product with a purity of 96% is obtained; in the third step, the remaining mother liquor is evaporated and concentrated (temperature 80°C, vacuum degree - 0.08MPa) to 1/3 of the original volume, and the temperature is reduced to 10°C to precipitate tertiary crystals, and a product with a purity of 93% is obtained. Each level of crystals is processed by a jet mill, with a nitrogen pressure of 0.7MPa and a grading wheel speed of 3000 rpm, and all are made into powder with D50=5μm, namely Mono-Pentaerythritol 93-99% min. (Micronized). Among them, the hydroxyl content of the 99% grade product is 40%±0.3%, and the ash content is <0.05%; the hydroxyl content of the 93% grade product is 38%±0.5%, and the ash content is <0.1%, which can meet the use requirements of different scenarios. This process is like screening sand and finely grading according to purity, so that each level of product can be used to its full potential and become the preferred economical flame retardant carbon source.
    How does Mono-Pentaerythritol 93-99% min. (Micronized) perform in coating flame retardancy?
    When the 99% grade product is used in solvent-based fire retardant coatings, it is compounded with ammonium polyphosphate at a ratio of 1:4, with a total addition of 50%, mixed with acrylic resin (solid content 50%), and ground by a sand mill (speed 2000 rpm) for 30 minutes to a fineness of <50μm. The coating is applied to a steel plate (dry film thickness 0.5mm) and tested after curing for 7 days. When burning, an expanded carbon layer with a thickness of 10mm can be formed within 30 seconds. It can withstand 1000℃ flame burning for 60 minutes, and the back temperature of the steel plate does not exceed 140℃, which meets the first-level fire retardant coating standard in GB 14907-2018. The 96% grade product is used for water-based fire retardant coatings. It is mixed with expanded graphite in a ratio of 3:1, with an addition amount of 45%, mixed with styrene acrylic emulsion, and dispersed in a high-speed disperser (speed 1500 rpm) for 20 minutes. The storage stability of the coating is up to 6 months, without stratification and sedimentation; applied on the wood surface, the dry film thickness is 1mm, the adhesion is up to level 2, and after a 7-day water resistance test (immersed in water at room temperature), the coating has no wrinkles or shedding, and the flame retardant performance retention rate is 90%. The 93% grade product is suitable for thick coating fire retardant coatings. The cost is 15% lower than that of the 99% grade. The addition amount is increased by 5% (that is, the total addition amount is 55%) to achieve the same flame retardant effect. It is applied on concrete walls (dry film thickness 5mm) and the flame retardant time is up to 180 minutes, meeting the fire protection requirements of large buildings. Its ultrafine particles (5μm) can fill the pores in the coating and improve the smoothness of the dry film by 20%. Therefore, in the fields of steel structure coating, wood fire retardant paint, concrete surface fire protection, etc., different purity levels can be flexibly selected according to cost and performance requirements, taking into account both economy and practicality.
    What are the characteristics of the synergistic effect of Mono-Pentaerythritol 93-99% min. (Micronized) and flame retardants?
    The 99% grade product is mixed with Melamine Cyanurate (MCA) in a ratio of 1:3 for nylon 6 (relative viscosity 2.8), with an addition amount of 20%, mixed and granulated by a twin-screw extruder (temperature 230-250℃), and injection molded into standard specimens. Tests show that its flame retardant performance reaches UL94 V-0 level (1.6mm), oxygen index is 31%, and tensile strength retention is 85% (up to 65MPa), which is 5% higher than that of non-ultrafine monopentaerythritol, because ultrafine particles can be more evenly dispersed in the nylon matrix, reducing the impact on mechanical properties. The 96% grade product is compounded with magnesium hydroxide (particle size 1μm) in a ratio of 1:5 for polypropylene (PP, melt flow rate 12g/10min), and the addition amount is 30%. When burning, it can promote the close combination of the carbon layer and the MgO insulation layer to form a double flame retardant barrier, extend the flame retardant time by 30%, and reduce the smoke density rating (SDR) from 60 to 45, reducing the smoke hazard in the fire. The 93% grade product is used in conjunction with red phosphorus (microcapsule coated) in a 2:1 ratio for polyethylene (PE, density 0.94g/cm³). The addition amount of 25% can reduce the amount of red phosphorus by 30%, effectively eliminate phosphorus smoke pollution, and increase the tensile strength retention rate of the product by 8%, solving the problem of mechanical properties degradation caused by excessive red phosphorus addition. Its monohydroxy structure has high reactivity and can quickly combine with various flame retardants to form a stable composite flame retardant system. Therefore, it can play a synergistic effect in different resins and flame retardant requirements, solving the problem of insufficient efficiency of a single flame retardant.
    What other applications does Mono-Pentaerythritol 93-99% min.(Micronized) have in industrial additives?
    The 99% grade product can be used as a crosslinker for polyester resins due to its high purity (99%) and low impurities: in the synthesis of unsaturated polyester resins (o-phthalate type), adding 5% can increase the crosslinking density of the resin by 20%, increase the curing speed by 20% (gel time shortened from 30 minutes to 24 minutes), and enhance the chemical corrosion resistance of the cured resin. After immersion in a 30% sulfuric acid solution for 30 days, the weight loss rate is less than 1%. When used for automotive primers, the adhesion reaches level 0 (cross-cut test), meeting the requirements of high-end coatings. The 96% grade product can be used as a raw material for lubricating oil antioxidants, reacting with diphenylamine to form a composite antioxidant. Adding 0.5% to lubricating oil for engineering machinery (viscosity grade 15W-40) can improve the antioxidant properties of the oil, extend the oxidation induction period of the lubricating oil from 200 minutes to 300 minutes, extend the oil change cycle to 1.5 times, and reduce equipment maintenance costs. 93% grade products can be used as additives for polyurethane foaming agents. In the synthesis of rigid polyurethane foam, adding 3% can adjust the foaming speed, make the foam pore size uniform (50-100μm), increase the closed cell rate by 15% (up to 90%), and reduce the thermal conductivity to 0.022W/(m・K), enhancing the thermal insulation performance, and are suitable for building insulation materials. Its ultra-fine particles (5μm) can be evenly dispersed in various additive systems to make the effect more stable. Therefore, in addition to the flame retardant field, it is also widely used in additives in the chemical, building materials, automotive and other industries, realizing one material with multiple functions.
    Mono-Pentaerythritol 93-99% min.(Micronized) What are the selection criteria for different purity levels?
    Electronic-grade products (such as automotive connectors, mobile phone charging interfaces, etc.) have extremely high purity requirements, and 99% grade products must be selected to ensure that there are no impurities affecting electrical properties (volume resistivity>10¹⁴Ω・cm). The addition amount is controlled at 8-12%, and it is compounded with Ammonium Polyphosphate (APP-3) in a precise ratio (usually 1:3) so that the product meets the UL94 V-0 flame retardant requirements and ensures good electrical conductivity and mechanical properties. For scenes with lower purity requirements such as architectural coatings and wood fire retardant paints, 96% grade products can be selected, with an addition amount of 15-20%. While ensuring flame retardant properties (flame retardant time ≥60 minutes), the cost of raw materials is reduced, and its slightly higher impurity content will not affect the construction performance and appearance of the coating. For filled products with low performance requirements, such as plastic pallets and trash cans, 93% grade products can be selected, with an addition amount of 20-25%, which can meet basic flame retardant requirements (UL94 V-2 level) and greatly reduce production costs. During storage, 99% grade products must be strictly protected from moisture (relative humidity <40%) to prevent moisture absorption and agglomeration that affect dispersion; 93% grade products can be appropriately relaxed (relative humidity <60%), but still need to avoid direct contact with water. Each level of products must be stored in separate areas and clearly marked to avoid mixing and causing product performance to fail to meet standards. During processing, stainless steel equipment (304 material) should be used for high purity levels (99%, 96%) to prevent equipment rust and contamination of products; ordinary carbon steel equipment can be used for low purity levels (93%) to reduce production equipment costs. This method of grading and selection is like tailoring to suit individual needs, so that products of different purities can play the greatest role in their respective applicable fields and maximize economic benefits.