| HS Code | 627360 |
| Name | 4-Cyanobenzoic acid |
| Cas Number | 619-65-8 |
| Molecular Formula | C8H5NO2 |
| Molar Mass | 147.13 g/mol |
| Appearance | White to off-white powder |
| Melting Point | 237-241 °C |
| Boiling Point | 368.1 °C at 760 mmHg |
| Solubility In Water | Slightly soluble |
| Density | 1.36 g/cm³ |
| Pka | 3.83 |
| Smiles | C1=CC(=CC=C1C#N)C(=O)O |
| Iupac Name | 4-cyanobenzoic acid |
| Pubchem Cid | 12658 |
As an accredited 4-Cyanobenzoic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The 4-Cyanobenzoic Acid is packaged in a sealed 100-gram amber glass bottle, labeled with chemical name, purity, and hazard warnings. |
| Shipping | 4-Cyanobenzoic Acid is shipped in tightly sealed containers, protected from moisture and direct sunlight. Standard shipping typically follows regulations for non-hazardous organic solids. Ensure compliance with local, national, or international transportation rules. Packaging is designed to prevent spills and contamination. Handle with appropriate PPE during receiving and storage. |
| Storage | 4-Cyanobenzoic acid should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from sources of moisture, heat, and ignition. Protect it from direct sunlight and incompatible substances such as strong bases or oxidizers. Proper labeling and secure shelving help prevent accidental spills or misuse. Use appropriate personal protective equipment when handling. |
As a specialist manufacturer, we deliver high-purity 4-Cyanobenzoic Acid for critical processes in advanced materials and chemical synthesis. The following sectors represent the primary industrial domains—each with distinct processing requirements, regulatory frameworks, and usage specifications—where downstream producers integrate this material into their value chains.
4-Cyanobenzoic Acid plays a central role in the synthesis of key intermediates for liquid crystal compounds. Its high chemical stability and defined substituent structure enable consistent mesogenic core construction, facilitating the development of advanced liquid crystalline materials for flat panel displays. Downstream users blend it with other aromatic acids during the step-growth polycondensation phase under controlled thermal conditions, directly influencing the electro-optical characteristics of the final liquid crystal formulations.
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This material is an established building block for synthesizing specialty aromatic polyesters, frequently deployed in automotive, electrical, and electronics applications. Its para-substituted cyano function enables enhanced rigidity and thermal resistance in co-polyester resins. Resin formulators typically feed it into melt-polymerization systems, where it copolymerizes with other diacids and diols to achieve target mechanical and flow properties in the final engineering plastic.
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In pharmaceutical manufacturing, this compound serves as a highly specific intermediate for the synthesis of active pharmaceutical ingredient (API) backbones, especially in antihistaminic, antineoplastic, and central nervous system (CNS) agent classes. Process chemists introduce it at defined steps of multi-stage organic syntheses, where its cyano group enables further transformation through amidation, reduction, or coupling reactions under cGMP protocols.
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Aromatic cyano acids are valued by pigment and dye manufacturers for their ability to introduce chromophoric features into azo and anthraquinone-based colorants. By incorporating this raw material during diazotization and coupling reactions, color chemists achieve tailored hue shifts and fastness improvements for high-performance pigments. Its influence extends to specialty dye formulations for plastics, textiles, and inkjet inks, where purity control is critical for compliance with environmental and product safety standards.
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This raw material strengthens the chemical backbone of advanced polyamide copolymers and certain specialty adhesives, supporting high bond strength and resistance to solvents and heat. Downstream compounders co-polymerize it with other aromatic and aliphatic acids using high-temperature melt reactions to produce modified polyamides. These applications demand rigorous formulation precision for use in electronics encapsulation and high-reliability bonding materials.
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Competitive 4-Cyanobenzoic Acid prices that fit your budget—flexible terms and customized quotes for every order.
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Production of 4-Cyanobenzoic Acid demands precision and a grounding in reliable chemistry. This compound, with the molecular formula C8H5NO2 and CAS number 619-65-8, shows up in a pure white to off-white crystalline form that signals properly controlled crystallization and purification. Historically, our commitment to quality during the reaction and workup stages helps deliver batches that chemists and process engineers can trust. Our current process, refined over several years, produces 4-Cyanobenzoic Acid with a minimum purity of 99.5% by HPLC, less than 0.5% water content, and minimal residual starting material. We track any deviation that can impact valuable downstream processes by closely monitoring both melting point (usually 235 to 239°C) and particle size range.
Some customers ask why this compound deserves attention compared to related products. Each nitrobenzoic or aminobenzoic acid reveals different reactivity and compatibility, but the cyanide-substituted aromatic ring in 4-Cyanobenzoic Acid enables well-controlled synthesis of specialty intermediates. The para-position cyanide groups contribute to functional versatility without the complications caused by ortho or meta isomers, such as steric hindrance or cross-reactivity.
Many buyers search for model numbers or standard codes before comparing prices or delivery times. Our experience suggests that success with 4-Cyanobenzoic Acid doesn’t start with a catalog listing — it comes from technical discussions. Labs synthesizing advanced liquid crystals or seeking precision catalysts repeatedly ask for custom particle size cuts or higher purity. Some industries favor larger lot sizes, such as 25-kilogram fiber drums, while fine chemical labs prefer 500-gram to 1-kg double-lined bags for faster turnarounds. Nearly all the product we ship, regardless of packaging, undergoes a thorough inspection. HPLC purity sits above 99.5%, with targeted control over chlorides, sulfates, and iron content, which ensures performance consistency in applications ranging from ligands to polymer additives.
For us, usage is more than a theoretical note. Partners in the pharmaceutical and electronics industries return to this product year after year. Their project engineers report better yields and lower side-product formation rates when starting from our 4-Cyanobenzoic Acid. In pharmaceuticals, this compound frequently enters as a building block in the synthesis of angiotensin receptor antagonists and other complex molecules. Its predictable behavior under Friedel-Crafts or coupling reactions appeals to process development teams, who have limited room for batch-to-batch irregularities.
Demand in the liquid crystal display sector centers on the need for high-performance intermediates. Our colleagues in process engineering once faced persistent issues with filter blockage and slow crystallization elsewhere — that stopped only after adopting high-purity 4-Cyanobenzoic Acid, which our process delivers without introducing excessive fines. This kind of feedback helps refine granulation and drying steps. In more niche sectors, such as dye intermediates, the unique combination of an aromatic ring and a cyano group supports electrophilic substitution and polymer modifications not practical with halogen-substituted benzoic acids.
Industrial clients often look for low heavy metals content. Using raw material traceability and modern in-line analytics, our batches consistently measure iron, copper, and lead beneath detectable limits for most sensitive downstream requirements. That facilitates use in catalysts, specialty metal-organic frameworks, and bright pigments where discoloration quickly exposes impurities ignored by casual handling.
Other benzoic acid derivatives, whether nitro-, amino-, or halogenated, create unique safety challenges or compatibility trade-offs. During pilot campaigns, a particular client reported byproduct fouling and unwanted azide formation with 4-aminobenzoic acid. The switch to 4-Cyanobenzoic Acid provided cleaner conversions, higher throughput, and reduced waste acid recovery. In electronic applications, especially display technologies, the para-orientation of the cyano group makes a difference in dielectric behavior and formation of polyesters free from byproducts that would otherwise reduce component lifetimes.
Market demand cycles between specialty polymers and pharmaceuticals. In our own operations, we’ve noticed supply chain hiccups influence the purity expectations for 4-Cyanobenzoic Acid much more than with simpler benzoic derivatives. We source our raw materials with stable long-term relationships and in-plant refinement, which prevents price spikes and inconsistent quality that often afflict the broader market.
Years of material handling experience show that 4-Cyanobenzoic Acid presents fewer occupational safety concerns than volatile or strongly acidic aromatics. Dust control remains important, particularly in operations involving pneumatic transfer or high-throughput sieving. Implementing fine mesh filtration and in-line collectors cuts dust load to nearly zero, which improves operator comfort and reduces cleanup times. Thermal stability and low hygroscopicity mean that temperature and humidity swings in the warehouse pose limited risk to material usability, compared to other specialty acids that clump or degrade after months on the shelf.
Customers trust that every kilogram matches the last. Quality assurance processes, from reaction monitoring to post-packing inspection, trace critical impurity levels and ensure compliance with strict customer requirements. These measures’ significance becomes obvious during audits and site visits from partners in regulated sectors such as pharmaceutical ingredient development or electronics. Surprises in the lab translate to throwaway time and compromised product — we prevent them with detailed documentation of synthesis conditions, analytical results, and shipping checks.
One learning moment arrived during a summer run several years ago. A sharp increase in ambient humidity triggered clumping in a batch left open on the loading dock. We invested in upgraded dehumidification, re-sealable containers, and better training. Since then, not a single lot shipped has missed the flow property target. Actively tracking customer returns and queries lets us improve labeling clarity on every drum, simplify handling instructions, and add precautions tailored to the actual challenges end users discover in routine handling. No AI analysis or market report beats the value of direct conversation about what actually goes wrong in a given plant.
Ongoing in-house R&D builds a better product even as usage trends shift. Process engineers optimize the solvent system, filtration speed, crutching parameters, and energy input to balance cost and environmental load while preserving yield. Some years, reducing solvent loss or lowering the energy required per kilogram produced makes more difference than nanoscale tweaking of impurity profiles. By listening to partners who blend grades for intermediate synthesis, we learn where improved color, solubility, or handling really matters.
Supplying to multiple sectors creates a constant push for adaptability. Pharmaceutical manufacturers need multi-ton quantities with GMP-grade documentation, full analytical trace package, and batch retention samples. Electronics groups push for purity and specific particle ranges, with lower tolerance for organic residuals or trace salts. Dyes and specialty polymers require flexibility in order sizes but less paperwork. These demands cannot slot into a simple “one size fits all” order form. Dedicated lines and rigorous change control procedures respond to these differences, keeping each customer’s process running without interruption.
We learned early that strict vertical integration, from upstream intermediates to purified product, prevents the guesswork that drives up scrap rates at the customer’s plant. Building relationships with trusted suppliers for every input and owning our packaging and freight decisions closes gaps that routinely open up with traders or third-party relabelers. Control from raw material to delivery gives the certainty that all parties in the supply chain appreciate. During times of market tightness, this becomes even more valuable.
Raw material prices, energy volatility, and environmental compliance shape our manufacturing outlook for 4-Cyanobenzoic Acid. Over the last decade, more customers ask about solvent recycling, emission abatement, and end-of-life disposal for specialty materials. We invested in closed-loop waste acid recovery, in-house solvent reclamation, and local partnerships for non-landfill packaging disposal. These moves stem as much from pragmatic cost management as from regulatory expectations.
Some clients have strict third-party audit requirements, digging deep into process residue streams and labor safety. Internal adoption of waste water monitoring, dust collection, and ergonomic kit suits isn’t just for a clean image; it reduces turnover, limits lost-time injuries, and shows up in the form of problem-free deliveries and loyal partnerships. Sustainability is an ongoing, pragmatic pursuit that has to sync with daily production — not a separate branding effort.
We believe regular, open communication matters. Most true improvements stem from fielding real-world complaints, whether a dye house operator asking about a subtle odor shift or a pharma API team seeking evidence of long-term batch consistency. The feedback loop shapes ongoing upgrades in product and packaging. We try to keep technical support direct: everyone who answers a question about 4-Cyanobenzoic Acid knows the plant, the process, and the likely failure modes.
Many competitors treat batch traceability, supply chain security, and regulatory readiness as marketing slogans. In our experience, transparent record-keeping and willingness to supply reference samples or analytical breakdowns quickly wins trust and secures repeat orders. End users want to know who made their materials, what to expect in handling, and why the specifications actually matter to downstream chemistry or device performance. We make these answers as direct as possible.
Our long history manufacturing 4-Cyanobenzoic Acid confirms its practicality in day-to-day lab and plant environments. Experience shows the right product forms a foundation for cleaner reactions, more predictable results, and steady business partnerships built on reliability. Listening to the technical needs of each sector lets us improve packaging, processes, and purity with real-world impact — not just catalog compliance. As demand for complex intermediates grows, the details in production, from raw material selection to on-time delivery, matter more than ever.
We look forward to keeping those details front and center, using years of hands-on manufacturing experience to supply a product that performs at the bench, on the line, and in the final device or formulation. Every kilogram leaving our plant bears the mark of that commitment, shaped by daily practice and real-world feedback from a growing circle of expert users.
