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1,3-Benzenedimethanol

    • Product Name 1,3-Benzenedimethanol
    • Alias m-Xylyleneglycol
    • Einecs 225-004-9
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    154837

    Chemical Name 1,3-Benzenedimethanol
    Synonyms m-Xylyl alcohol
    Molecular Formula C8H10O2
    Molecular Weight 138.17 g/mol
    Cas Number 626-16-4
    Appearance White crystalline solid
    Melting Point 62-64 °C
    Boiling Point 286-288 °C
    Density 1.18 g/cm3 (at 25 °C)
    Solubility In Water Slightly soluble
    Flash Point 157 °C
    Pubchem Cid 12363
    Smiles C1=CC(=CC=C1CO)CO
    Inchi InChI=1S/C8H10O2/c9-5-7-2-1-3-8(4-7)6-10/h1-4,9-10H,5-6H2

    As an accredited 1,3-Benzenedimethanol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 1,3-Benzenedimethanol is supplied in a 500g amber glass bottle with a secure screw cap, labeled with hazard and handling instructions.
    Shipping 1,3-Benzenedimethanol should be shipped in tightly sealed containers made of materials compatible with organic chemicals. It must be labeled in accordance with chemical safety regulations, transported under cool, dry conditions, and kept away from heat or ignition sources. Appropriate hazard documentation and shipping papers must accompany the package during transit.
    Storage **1,3-Benzenedimethanol** should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible materials such as strong oxidizers. Protect from moisture and direct sunlight. Ensure container is clearly labeled, and avoid storing near food or drink. Use appropriate secondary containment to prevent spills or leaks.
    Application of 1,3-Benzenedimethanol

    Applications of 1,3-Benzenedimethanol in Industrial Manufacturing

    As a direct manufacturer of 1,3-Benzenedimethanol, we supply this high-purity aromatic diol for specific industrial applications where structural control, reactivity, and end-use performance demand differentiated performance. Each downstream segment we serve relies on verifiable industrial processes, established compliance standards, and distinct formulation requirements. Below, we outline the most widely implemented applications with full transparency on their technical application parameters and regulatory compliance.

    1. Polyester Resin Synthesis for Coil Coatings

    Coil coating producers incorporate 1,3-Benzenedimethanol as a key difunctional monomer in the backbone of polyester resin systems. Its symmetrical structure improves hardness, chemical resistance, and film flexibility. Unlike typical glycols, it increases molecular packing, which is critical for long-term UV and weathering stability in outdoor coating applications on aluminum and steel panels. Formulators adjust the concentration according to the resin’s target glass transition temperature (Tg) and the desired crosslink density for end-use performance.

    Industry compliance standards

    • REACH (EU Regulation 1907/2006)
    • RoHS Directive 2011/65/EU (for coatings on electrical steel)
    • ASTM D3363 (Coating Hardness)
    • ISO 12944-5 (Anti-corrosion systems for steel structures)

    Typical usage ratio

    • 5–18% by weight of total glycol component, calculated based on desired resin modulus and reactivity, varies with final application (exterior or interior panels).

    Downstream process integration

    • Incorporated during polycondensation alongside isophthalic acid, terephthalic acid, and traditional polyols; provides hydroxyl termination for further crosslinking stages using amino resins or isocyanates.

    Final product types

    • Pre-coated steel and aluminum coils for construction panels
    • Appliance exterior metal casings
    • Roofing sheets and architectural façade coils
    • Automotive body trim and panel substrates

    2. PETG Copolyester Modification in Rigid Packaging Films

    Rigid packaging manufacturers modify PETG (polyethylene terephthalate glycol) copolymer resins by substituting a portion of glycol feed with our diol, which imparts lower crystallinity and improved transparency. This adjustment tailors the copolymer for demanding thermoforming and vacuum forming applications. It also benefits the recyclability profile by reducing haze and facilitating consistent melting behavior in secondary processing lines.

    Industry compliance standards

    • FDA 21 CFR 177.1315 (Food Contact Polymers)
    • EU Regulation 10/2011 (Plastic Materials in Contact with Food)
    • ISO 527 (Plastics—Tensile Testing)
    • EN 1186 (Materials for Food Contact)

    Typical usage ratio

    • 3–15 mole% of total glycol feed; precise level determined by required clarity and formability for end-user packaging lines.

    Downstream process integration

    • Added in esterification and polycondensation stages with terephthalic acid or DMT, blended with ethylene glycol in batch or continuous reactors; ensures low byproduct formation and clear extrudability.

    Final product types

    • Food-grade thermoformed containers (clamshells, blister packs)
    • Transparent medical device packaging trays
    • Display and point-of-sale packaging
    • Beverage and dairy product overwrap films

    3. Epoxy Resin Toughening Agent in Electrical Encapsulation

    Manufacturers of epoxy resins utilize 1,3-Benzenedimethanol as a toughening agent and reactive diluent to improve mechanical properties and electrical insulation resistance in encapsulation compounds for electronic components. Its aromatic diol structure maintains high adhesive strength and enhances thermal stability during curing—crucial for electronic assemblies exposed to cycling temperatures and vibration. Resin formulators balance the additive dose to control viscosity and final cure properties without compromising dielectric performance.

    Industry compliance standards

    • IEC 60216 (Electrical Insulating Materials)
    • UL 94 (Flammability of Plastic Materials)
    • RoHS 2011/65/EU (Reduction of Hazardous Substances in E/E Equipment)
    • IPC-4101 (Base Materials for Printed Boards)

    Typical usage ratio

    • 7–20% by total resin weight, dependent on desired flexibility, heat deflection temperature, and targeted electrical properties.

    Downstream process integration

    • Premixed with base epoxy resin prior to addition of curing agent (normally anhydride or amine systems); processed under vacuum to prevent entrapped air, then cast or dispensed onto electrical assemblies.

    Final product types

    • Potting materials for transformers and relays
    • Encapsulation resins for printed circuit boards (PCBs)
    • Coil impregnation compounds for electromagnets
    • Sensor encapsulants for automotive and industrial electronics

    4. Liquid Crystal Polymer (LCP) Intermediate in High-Performance Electronics

    Producers of specialty liquid crystal polymers incorporate this aromatic diol as an intermediate monomer in wholly aromatic polyester chains, which promotes nematic order and high-temperature dimensional stability. 1,3-Benzenedimethanol enables precise adjustment of melting temperature and tensile strength in LCPs used for microelectronics components and ultra-thin connectors. The monomer addition must meet stringent purity and reactivity profiles due to carryover sensitivity in melt polymerization.

    Industry compliance standards

    • IPC-4101/29 (LCP Laminates for PCBs)
    • UL 746B (Polymer Materials—Long-term Properties Evaluation)
    • JEDEC JESD96 Standards (for electronic polymers)
    • ISO 1043-1 (Plastics—Symbols and Abbreviations)

    Typical usage ratio

    • 5–12 mole% of total diol fraction in the LCP monomer mixture, adjusted to achieve target mechanical anisotropy and dielectric requirements.

    Downstream process integration

    • Fed as a purified solid or melt phase into continuous condensation reactors with aromatic dicarboxylic acids; strict moisture control and inert gas blanketing required to prevent pre-polymer hydrolysis and discoloration.

    Final product types

    • High-frequency flexible printed circuit boards
    • Microconnector housings for consumer electronics
    • Thin-wall film capacitors for mobile devices
    • LED substrate carriers

    5. Thermoset Adhesive Modification for Automotive Headlamps

    Automotive component manufacturers employ our diol as a reactive modifier in thermoset polyurethane and polyester adhesive formulations for headlamp assembly. It supports the creation of adhesive layers that maintain elasticity and dimensional stability under continuous heat, UV, and humidity cycles. Controlled incorporation improves bonding to polycarbonate and glass substrates, a key requirement for modern lamp designs with complex geometries.

    Industry compliance standards

    • IATF 16949 (Automotive Quality Management)
    • ISO 3623 (Plastics in Automotive Headlamps)
    • SAE J576 (Plastic Materials in Lighting Equipment)
    • FMVSS 108 (US Federal Lighting Standards)

    Typical usage ratio

    • 3–10% by active binder weight, optimized based on lamp size, bond line thickness, and required flexibility at tested temperatures (-40°C to +120°C).

    Downstream process integration

    • Blended into the polyol pre-mix stage; introduced prior to catalyst and isocyanate addition; processed with precise thermal and vacuum dosing systems to ensure consistent curing and prevent bubble formation in adhesive joints.

    Final product types

    • Automotive headlamp assemblies (halogen, LED, HID)
    • Taillight and signal light lens bonding units
    • Fog light modules
    • Decorative trim adhesives for exterior lighting
    Free Quote

    Competitive 1,3-Benzenedimethanol prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please call us at +8615371019725 or mail to admin@sinochem-nanjing.com.

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    Tel: +8615371019725

    Email: admin@sinochem-nanjing.com

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    Certification & Compliance
    More Introduction

    1,3-Benzenedimethanol: Cultivating Reliable Foundations in Specialty Manufacturing

    Introducing Our Experience with 1,3-Benzenedimethanol

    We have worked hands-on with aromatic diols for several decades. In that time, 1,3-Benzenedimethanol, also recognized by chemists as m-Xylylene glycol or m-xylylene alcohol (CAS Number 626-16-4), has become a staple in our portfolio. This compound stands out with its molecular structure: a benzene ring linked to two methanol groups at the 1 and 3 positions. Our manufacturing lines rely on finely tuned reaction processes to ensure each batch carries the quality and purity that downstream users demand in applications ranging from resins to coatings and specialty plastics.

    Quality at the Source

    Consistency matters in chemical manufacturing. Over the years, we refined our process for synthesizing 1,3-Benzenedimethanol. Our plant blends basic petrochemical feedstocks using hydrogenation methods to deliver a crystal-clear, white crystalline solid with reliable melting point and low volatility. Routine batch testing verifies purity so impurities such as unreacted toluene or para-derived side products remain well below actionable thresholds. Customers depend on this focus when using our diol to build structural integrity into thermoset resins or high-temperature polyesters.

    Physical Characteristics That Set the Standard

    In our experience, the physical properties of 1,3-Benzenedimethanol drive its fit for demanding jobs. Its moderately high melting point and water solubility means it blends with other diols, lending flexibility to resin formulations. Its dual alcohol groups foster robust crosslinking. This supports polymer producers looking to balance rigidity with minor flexibility—especially in cured polyesters, alkyds, or unsaturated polyester resins.

    Packaged as a free-flowing crystalline product, it ships without agglomeration or degradation concerns. Customers report stable storage under typical warehouse conditions; the material absorbs little ambient moisture and resists caking. That alone makes it an attractive option for batch-based production or just-in-time consumption in resin kettles and reactors.

    Comparison to Related Diols and Their Chemical Limitations

    We've had requests about the differences between 1,3-Benzenedimethanol and its close relatives—1,2- and 1,4-benzenedimethanol isomers, as well as straight-chain diols like ethylene glycol or neopentyl glycol. The placement of the methanol groups on the aromatic ring shapes how the molecule reacts in polycondensation processes. For example, 1,4-benzenedimethanol (p-xylylene glycol) brings different steric hindrance, resulting in products that cure with greater rigidity and less flexibility down the polymer chain. Customers using 1,3- derive added toughness without excessive brittleness—important when balancing crack resistance and dimensional stability.

    In contrast, aliphatic diols lack the aromatic backbone. This limits their ability to confer thermal stability and hardness to final products. Our clients in the advanced coatings sector find the aromatic contribution of 1,3-benzenedimethanol essential when fabricating bake-cured coatings that survive repeated thermal cycling without yellowing or microcracking.

    Usage: Applications Built on Real-World Demands

    The heart of demand for 1,3-benzenedimethanol sits in thermoset resin chemistry. Producers seeking improvements in resilience and rigidity incorporate our material into polyester-based resins, unsaturated polyesters, and alkyds. The bi-functional groups hook easily into established synthesis pathways. This makes scale-up smooth, provided proper reaction monitoring and stoichiometry control. Over time, we have witnessed customized blending for coil coatings, powder coatings, and high-performance composites—especially where finished parts must resist deformation under load and temperature.

    Beyond polymer chemistry, end-users utilize our product to fine-tune surface finishes and speciality adhesives. The slightly higher melting point, compared to linear aliphatic diols, delivers more controlled reactivity. A colleague on our technical team once pointed to a project where small additions of 1,3-benzenedimethanol to an alkyd backbone brought a jump in pencil hardness with no sacrifice in gloss holdout. We routinely advise customers to test narrow dosage windows due to the pronounced network-forming potential of the aromatic ring in this diol—too much can tip the blend toward excess rigidity.

    Lab trials have shown repeatability. Thermosetting resins derived from our 1,3-benzenedimethanol consistently meet performance benchmarks for tensile strength, compressive modulus, and hydrolytic stability. In adhesive formulations, its aromaticity brings greater resistance to weathering and UV exposure—important in automotive and construction segments.

    Manufacturing Approach and Quality Control

    Commitment to product quality starts on our shop floor. Our staff carry out precision distillation, temperature-controlled crystallization, and repeated washings to deliver a finished product with purity benchmarks above 99 percent. In-process monitoring by gas chromatography ensures minimal presence of toluene derivatives, aldehydes, or byproducts from side reactions. Using closed system reactors and inert atmospheres, we prevent oxidative degradation which can stain or destabilize the final solid. At dispatch, certificate of analysis and detailed batch records support traceability for every pallet leaving our warehouse.

    For specialty resin makers in Europe and North America, we have custom-tailored packaging—HDPE drums, paper bags with inner liners, and super sacks, all equipped to minimize atmospheric pickup. On large installations, we have run pumpable crystalline slurries to reactor intake tanks, eliminating time lost on melting and pre-treatment. Our technical teams helped several clients move away from older, less pure diols to our product, and in most cases, the switch has led to process efficiency gains and higher end-use reliability.

    Optimizing Performance: Lessons from End-User Feedback

    The real test for any specialty material lies in the field. Over hundreds of collaborations, our technical support teams hear direct feedback from design chemists who rely on the chemical consistency and predictable reactivity of 1,3-benzenedimethanol. Users tell us that final resin viscosity, cure rate, and surface appearance depend critically on the minute details of diol addition and mixing regime. Poorly controlled additions, or substitution with generic grades sourced from less established suppliers, have led to gelling, micro-bubble formation, or loss of desired thermal performance in the past.

    We encourage all customers to start small, examining the relationship between our diol and their catalyst systems, peroxide initiators, or shrinking mediators. Good mixing, attention to temperature profiles, and aggressive removal of water during reaction have shown the best outcomes. Many sites install inline viscosity measurement and GC monitoring to keep the window of optimal molecular weight distribution. In resins made for premium coil coatings—where every micron matters in corrosion resistance—customers tell us the difference in performance can be traced to the purity and aromaticity of our product.

    Differentiation: The Value Over Commodity Alternatives

    Commodity-grade diols often promise economical solutions, but resin formulators report frequent volatility in their physical properties and polymer end-use results. The aromatic base in 1,3-benzenedimethanol built in our lines strengthens cured polymers without making them too brittle for impact or thermal stress. This advantage has accounted for increased market preference for our grade among powder coating and specialty adhesive manufacturers who need confidence in outdoor exposure, thermal cycling, and wear resistance.

    Chemically, the unique placement of two methanolic groups on the benzene core delivers a molecular geometry distinct from linear or fully para-substituted analogs. The orientation facilitates both crosslink density and enough mobility for segmental motion in large polymer chains. This results in a balance between high glass transition temperature and maintenance of workability, gloss, and resistance to cracking. In construction resins, this translates to finished materials that retain surface hardness without chalking or embrittling under sun and weather exposure.

    Sustainability Challenges and Supply Assurance

    Modern manufacturing must address not only product performance but also environmental stewardship. 1,3-Benzenedimethanol relies on aromatic intermediates derived from the current petrochemical complex. Fluctuations in benzene and toluene feedstock markets have trickled to the supply chain over recent years. We face the same sourcing headwinds as the wider chemical sector, but long-standing supplier relationships allow us to maintain stable production flows, even in times of tightness. Bulk purchasing and storage capability help insulate our output from short-term market shocks and keep downstream users running through seasonal peaks.

    We continue to explore alternative feedstocks, including limited pilot trials on bio-aromatics. These exist at early stages, with current cost structure unable to support wide adoption—yet we remain watchful in the search for practical, scalable ways to introduce recycled or bio-based sources without risking the purity or consistency demanded by our core users.

    Safe Handling and Workplace Observations

    Our operators and shipping teams handle 1,3-benzenedimethanol daily. The material shows minimal toxicity under normal conditions, but skin and eye contact can cause irritation, as with most alcohols. We enforce gloves, chemical goggles, and local exhaust ventilation throughout the transfer, blending, and packaging steps. Occasional spills dissolve readily in water for quick cleanup, provided good housekeeping prevents buildup. Repeated training with emphasis on rapid isolation and cleanup ensures zero major incidents since the start of operations with this compound.

    Waste streams are tightly managed, routed to approved incineration or reclamation facilities. We work closely with customers to provide SDS and training support, emphasizing attention to correct preheating protocols during charging to resins—overheating or adding to overheated catalysts can trigger exothermic events or discolor the batch. Plant managers who adopt recommended workflows often see reduced downtime and less raw material loss to waste or off-specification batches.

    Looking Forward: Opportunities for Research and Product Evolution

    The world of specialty chemistry evolves constantly. In our labs, research teams push for improved routes to 1,3-benzenedimethanol with fewer byproducts and greater throughput. Recent investments in catalytic systems aim to increase yield, reduce reaction time, and lower unit energy consumption. We see opportunities to support end-users developing lighter, stronger composite materials for transportation and electronics, where aromatic diols like ours add real value by raising the thermal durability and mechanical performance envelope.

    Collaborative projects with customers have inspired formulation tweaks that minimized unwanted color development and boosted resistance to chemical exposure. In one case, a partner developed a new class of waterborne coatings that leveraged low concentrations of our product to impart greater cohesion during ambient cure stages. By keeping an open line to application engineers and pilot plant operators, we keep our material’s benefits aligned with shifting needs in the construction, automotive, and electronics markets.

    Regulatory shifts on VOCs, environmental emissions, and hazardous substance labeling drive us to keep reevaluating solvent profiles, reaction auxiliaries, and final residue tolerances. Our technical teams engage proactively with global regulations to keep all documentation current and transparent. Support for product stewardship is an ongoing part of our relationship with clients—sharing best practice on storage, dosing, and end-of-life management to support overall market reputation for safety and reliability.

    Final Thoughts On Our Journey With 1,3-Benzenedimethanol

    Our role as a chemical manufacturer goes well beyond selling a commodity. Through steady experience with 1,3-benzenedimethanol, we have watched its contribution ripple through thousands of production lines—supporting performance, durability, and creativity across a range of end uses. The continuous improvement of our synthesis and quality systems rests on lessons learned at the intersection of in-plant challenges and customer feedback. That story isn’t static. Every year brings changes in market demand, regulatory requirements, and operational technologies. We adapt to each new challenge without sacrificing reliability or safety.

    Direct communication with partners drives many improvements. Their feedback steers us to new purity grades, process tweaks, and packaging enhancements that have real downstream effect. Specialists on our team watch global material trends and bring that context to buyers in every industrial sector we serve. We earn trust batch by batch, year after year, grounding our expertise in the science and working realities of 1,3-benzenedimethanol manufacturing. Through this, we share in the progress of every resin, coating, composite, and adhesive made possible by careful chemistry and steady technical focus.