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Comprehensive analytical examination of physicochemical properties, isomer identification, and synthetic reaction pathways.
5-Dimethylphenol, predominantly known in industrial organic chemistry as 3,5-dimethylphenol (or 3,5-xylenol, CAS Registry Number 108-68-9), is a critical methylated phenolic compound. Featuring two methyl groups substituted at the symmetrical 3 and 5 positions of the aromatic benzene ring relative to the hydroxyl group, this specific isomer architecture imparts distinct steric, thermal, and reactive chemical properties compared to its structural isomers (such as 2,4-xylenol, 2,6-xylenol, or 2,3-xylenol).
| Chemical Parameter | Standard Specification (Industrial Grade) | High-Purity Catalyst Grade | Analytical Method |
|---|---|---|---|
| Assay (Purity by GC) | ≥ 98.5% | ≥ 99.5% | Gas Chromatography (FID) |
| Appearance | Off-white to pale yellow crystalline solid | Pure white crystalline needles | Visual Inspection |
| CAS Number | 108-68-9 (3,5-Xylenol Isomer) | CAS Registry Standard | |
| Molecular Formula / Weight | C8H10O / 122.16 g/mol | Mass Spectrometry | |
| Melting Point | 61.0°C - 64.0°C | 63.0°C - 65.5°C | Capillary Melting Apparatus |
| Boiling Point | 221.0°C - 222.5°C at 760 mmHg | 221.5°C at 760 mmHg | Distillation Profile |
| Moisture Content (Karl Fischer) | ≤ 0.20% | ≤ 0.05% | Karl Fischer Titration |
| Non-Volatile Residue | ≤ 0.05% | ≤ 0.01% | Gravimetric Analysis |
Historically, xylenol isomer mixtures were isolated via coal tar distillation, a process plagued by difficult isomeric separation, sulfur contamination, and trace thiophenic impurities. JIMPOCHEM’s advanced manufacturing facility utilizes a state-of-the-art vapor-phase catalytic alkylation of phenol with methanol over custom-engineered solid metal-oxide catalysts (such as modified iron-antimony or aluminum oxide matrices).
This synthetic methodology provides distinct structural advantages for enterprise procurement:
Integrating synthetic chemistry research, intelligent production automation, and stringent global quality assurance.
Established in 2010 in the Chemical Industry Park of Jinan City, Shandong Province, JIMPOCHEM operates multi-stage automated distillation columns monitored by Distributed Control Systems (DCS). This digital infrastructure ensures precise temperature and vacuum pressure stabilization, delivering consistent batch-to-batch chemical purity.
Adhering strictly to "Quality as Enterprise Lifeline," our testing laboratories feature High-Performance Liquid Chromatography (HPLC), Gas Chromatography-Mass Spectrometry (GC-MS), and Atomic Absorption Spectroscopy (AAS). Full lot traceability is secured via serialized QR tracking from raw material intake to final export delivery.
Aligning with China's national dual-carbon initiatives, our factory incorporates high-efficiency thermal oxidizers (TO), catalytic VOC recovery loops, and zero-liquid-discharge (ZLD) wastewater treatment operations to guarantee sustainable, eco-compliant continuous chemical manufacturing.
Detailed evaluation of how 5-dimethylphenol acts as an indispensable structural precursor across critical industrial sectors.
The single largest global demand driver for 3,5-dimethylphenol is the production of 4-chloro-3,5-dimethylphenol (PCMX) and 2,4-dichloro-3,5-dimethylphenol (DCMX) via selective electrophilic chlorination.
Application Insight: PCMX is a non-toxic, broad-spectrum antiseptic widely integrated into personal care products (antiseptic liquids, antibacterial hand washes, medicated soaps) and hospital-grade surface disinfectants. Ultra-low 2,4-isomer content in the 3,5-xylenol feedstock ensures maximum yield and minimal toxic byproduct formation during chlorination.
High-purity 5-dimethylphenol serves as a critical monomer modifier in the oxidative coupling polymerization of polyphenylene oxide (PPO) and polyphenylene ether (PPE) resins.
Application Insight: Incorporation of 3,5-dimethylphenol segments enhances thermal resistance, glass transition temperature ($T_g$), dielectric performance, and moisture hydrolysis resistance—making these resins ideal for automotive electrical connectors, 5G circuit boards, and semiconductor packaging components.
In organic synthesis, 3,5-xylenol functions as an essential aromatic intermediate for synthesizing lipid-regulating pharmaceuticals (such as Gemfibrozil analogs) and custom agrochemical fungicides.
Application Insight: Pharmaceutical manufacturing mandates stringent metal-ion limits (<1 ppm) and consistent purity (>99.5%). JIMPOCHEM provides analytical grade 5-dimethylphenol tailored to satisfy international pharmacopeial precursor standards.
Alkylated derivatives of 3,5-xylenol yield sterically hindered phenolic antioxidants utilized in stabilizing synthetic elastomers, polyolefins, processing oils, and jet fuels.
Application Insight: Protects polymers from thermal degradation and oxidative chain propagation under extreme operational temperatures, significantly expanding product service life in demanding industrial environments.
Why leading global chemical enterprises partner with Jinan JIMPOCHEM for long-term commercial contract manufacturing.
Situated within Shandong’s mega chemical cluster, JIMPOCHEM benefits from direct pipeline access to basic feedstocks (Phenol and Methanol). This vertical integration insulates global buyers from volatile spot-market price spikes and raw material shortages.
We offer multi-tier packaging options customized for international maritime freight: 200kg galvanized steel drums, 1000kg IBC totes, and temperature-controlled stainless steel ISO Tank containers equipped with nitrogen blanketing systems to block air intrusion.
Located within short haulage distance to Qingdao and Tianjin ports, our export logistics team manages hazardous chemical export declaration permits (Dangerous Goods Certificate), ensuring rapid customs clearance and optimized shipping transit times.
Ensuring seamless global regulatory integration and REACH compliance for international chemical distributors.
Navigating global chemical import mandates requires comprehensive documentation. JIMPOCHEM provides full regulatory packages with every shipment:
Our senior chemical application engineers offer one-on-one technical consultation to support downstream integration:
Market foresight into green catalytic synthesis, low-VOC processing, and semiconductor grade chemical demands.
The chemical industry is rapidly shifting from conventional batch reactors to micro-channel continuous flow reaction technology. Continuous methylation allows microsecond residence time control, reducing side-chain over-alkylation, enhancing safety, and reducing thermal energy consumption by up to 35%.
With the rapid growth of 5G communications and AI hardware computing, high-frequency PCB substrates require specialized low-dielectric constant resins. Market demand for ultra-pure 3,5-dimethylphenol (metal ions < 10 ppb) as a monomer component for PPO resins is projected to achieve an 8.5% CAGR through 2030.
Global enterprise buyers are prioritizing suppliers with transparent Product Carbon Footprints (PCF). JIMPOCHEM’s adoption of green solar power integrations and continuous waste-heat recovery systems positions our 5-dimethylphenol as a low-carbon choice for eco-conscious chemical supply chains.
Expert answers addressing chemical specifications, custom ordering, shipping logistics, and compliance verification.
Explore high-performance organic precursors, cosmetic actives, and industrial compounds available for direct international dispatch.
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