| HS Code | 114544 |
| Cas Number | 501-98-4 |
| Molecular Formula | C9H8O3 |
| Molecular Weight | 164.16 g/mol |
| Iupac Name | 4-hydroxycinnamic acid |
| Appearance | White to off-white crystalline powder |
| Melting Point | 213-215°C |
| Solubility In Water | Slightly soluble |
| Boiling Point | 338°C at 760 mmHg |
| Density | 1.299 g/cm³ |
| Pka | 4.58 |
| Synonyms | p-Coumaric acid |
| Odor | Odorless |
| Uv Maximum Absorption | 308 nm |
| Storage Temperature | 2-8°C |
| Refractive Index | 1.623 |
As an accredited P-Hydroxycinnamic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | P-Hydroxycinnamic Acid is packaged in a 100-gram amber glass bottle, sealed with a screw cap, and clearly labeled. |
| Shipping | P-Hydroxycinnamic Acid is shipped in tightly sealed containers to prevent contamination and moisture ingress. Packaging follows all relevant chemical transport regulations, including labeling as a laboratory chemical. It is typically transported at ambient temperature, with handling precautions to minimize exposure and ensure safety for both the product and personnel during transit. |
| Storage | P-Hydroxycinnamic acid should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat or ignition. Keep the container tightly closed to protect from moisture and air exposure. Store away from incompatible substances such as strong oxidizing agents. Use inert materials for containers, and label containers clearly to avoid contamination and ensure safety. |
Competitive P-Hydroxycinnamic Acid prices that fit your budget—flexible terms and customized quotes for every order.
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Every kilogram of P-Hydroxycinnamic Acid our facility turns out comes straight from a system we’ve refined over years of chemical work. In the world of organic synthesis and plant-derived compounds, few ingredients deliver the kind of reliability our version offers. Through direct handling, close monitoring, and a steady commitment to product quality, we've shaped our production line to serve researchers and industrial labs needing more than just a fine white powder. Everything about P-Hydroxycinnamic Acid, right down to its signature faint scent, carries the mark of careful attention to detail. The protocols we use reflect hard-learned experience. Batch records, purity checks beyond basic chromatographic confirmation, and feedback loops with end-users keep us focused on a product that meets very concrete standards each cycle.
The form that leaves our drums fits the most requested specification of minimum 99% purity, controlled at every stage using HPLC and melting point verification. For clients aiming at analytical, pharmaceutical, or custom synthetic work, this specification covers most of the bases, from ease of dissolution in organic solvents to color stability. Particle size sits between 80 and 120 mesh, since the flow and blending properties at this range have proven reliable during years of direct observation on customer lines. Trace moisture, metals, and solvent residues fall well below listed USP and EP reference values, verified lot by lot, and never waived or assumed.
Sometimes, a customer working in higher volumes or handling unique equipment needs a tweak in the production schedule. We keep a smaller side production train that allows us to provide coarser or finer grades, or alternate filtrations, for anyone operating agitation-sensitive mixers, or those working with fine solution chemistry in high-value settings. Orders above 500 kilograms go through an additional pilot batch review, with re-testing for shelf stability and color shift. Our Q.C. group pays close attention to the persistent challenge of trace contaminants, because even parts-per-million can disrupt a careful reaction. If a genuinely unusual parameter comes through, we involve our plant chemists directly to adjust process filtration or crystallization.
Industry experience teaches that commodity chemicals become essential in more ways than a spec sheet can capture. P-Hydroxycinnamic Acid sits at a crossroads for researchers and manufacturers working at the edge of what food additives, cosmetics, and pharmaceuticals require from a phenolic intermediate. In the food world, it earns attention for antioxidant properties and preservative effects when introduced to select formulas. For cosmetic developers chasing safer, plant-origin alternatives, it appeals as a raw material for UV absorption systems and tone-stabilized ingredients in cream bases. On the pharmaceutical side, formulation chemists look to this acid for its performance in synthesis of anti-inflammatory drugs and as a starting scaffold for new active molecules.
Our technical support group, drawing on our decade-plus track record, often gets questions about application compatibility. Lab to market, this acid’s consistency affects outcomes, from pilot scale to final blending. Small inconsistencies in melting point, solubility, or residual reactants kick off cascade effects in batch production. Manufacturers in every downstream sector know this. That’s why our P-Hydroxycinnamic Acid isn't an afterthought; it’s part of the process design from the beginning.
Ask any plant chemist how P-Hydroxycinnamic Acid stands apart, and you’ll hear talk about more than structure. Chemically, you’re looking at a para-hydroxyphenyl group with an acrylic side chain, but the difference is not just nomenclature. Take ferulic acid or caffeic acid—both catch the eye for overlapping antioxidant activities and general role in plant metabolism. On the production side, ferulic acid’s methoxy group requires different downstream purification. Caffeic acid, with two hydroxyl groups ortho to each other, brings different solubility and chromatographic challenges. Purification and separation of these relatives take a separate approach, and this impacts both cost and purity achievement.
Customers often come in with questions expecting general interchangeability among these phenolic acids. In practice, that assumption fails quickly. Ferulic acid tends to be darker, oxidizes more readily, and can carry a persistent almond-like aroma. Caffeic acid commonly clumps, picking up atmospheric water—and its additional hydroxyl group complicates handling, especially in high-humidity regions. P-Hydroxycinnamic Acid, on the other hand, resists color change, maintains low moisture affinity in bulk form, and blends cleanly with most organic co-solvents. These points become critical in formulations where stability and appearance mean customer trust, not just basic functionality.
Over years of filling orders for all three compounds, our production records bear out these qualitative assessments. P-Hydroxycinnamic Acid yields fewer batch complaints and requires less packaging adjustment. When used in food antioxidant blends, it holds up better after storage, with test results confirming observable retention of color and antioxidant rating after accelerated aging. Where one manufacturer may use caffeic acid for a short-shelf-life product, another with export logistics in mind consistently comes back for our P-Hydroxycinnamic Acid.
No amount of lab theory beats hands-on production. In practical settings, temperature control during crystallization sets the performance for the bulk product. We run jacketed vessels linked to a feedback system, moderating temperature swings during the final slow cooling stage. This smooths out crystal growth, reducing fines that can be hard to re-dissolve or filter out. Every batch is pressure filtered under nitrogen to minimize oxidation, a step that years ago cut down on color contaminants and unexpected odor profiles.
Once out of the vessel, our team packages the acid within high-density, food-safe polyethylene liners and double-sealed drums. This drives down the risk of in-transit moisture pickup. In our own shipments, returns due to package swelling or interior condensation dropped to near zero after we started this practice. Including simple color and odor checks before sealing the drum, and maintaining a strict “first out, first shipped” protocol, trimmed warranty claims as well.
Routine in-house testing goes beyond regulatory minimums. Each drum ships with a certificate, but behind every shipment sits a row of tested retention samples stored at real-world ambient conditions, not just in a climate-controlled lab. Every few months, we pull an archived sample, run a comparison with the latest batch, and look for even the slightest deviations in melting point and chromatic index. These data go back to our technical team—always looking for ways to extend shelf life or catch the subtle drift that can show up before a batch hits a customer’s bench.
Some of our largest partners started out experiencing hiccups using commodity lots from bulk traders. Stories cross our desk of stubbornly slow dissolving powders, filters clogging beyond cleanable limits, and color spoiling entire product runs. Switching to our manufacture, they saw blending times reduce and out-of-spec returns decline. Projects in both Asian and European markets reported a smoother move from pilot to full-scale runs, with our acid behaving the same at 1 kilogram as it did in the metric ton order.
By working directly with users in fields as diverse as ointment production and antioxidant film coatings, we keep a feedback channel open. Some application chemists have walked our shop floor, swapped advice with our plant operators, and offered protocols that helped us refine fines removal or suggest better packaging for high-humidity regions. Their insights led to real process changes—such as switching filtration stages or adapting batch drying protocols—and in turn, their production lines saw less downtime and better product review scores.
Direct communication matters. Unlike distributors who ship a standardized spec to all comers, we answer detailed questions about reaction byproducts, cross-compatibility with co-formulants, and optimal mixing methods based on actual field data. Our records track lot consistency not just with tabulated numbers but with real-world reports—spotting the ripple impact a change in raw material can create months downstream in an international shipment.
Every plant operation faces shifting raw material landscapes. There have been cycles where some of our base materials for P-Hydroxycinnamic Acid went tight or showed unexpected variation in impurity profile. Instead of pushing out the issue down the chain, we trace from synthesis back to raw material origin. By doing so, we pick up differences in annual crop yields, supplier solvent changes, or subtle variances in input quality. If a shift looks persistent, we adjust our standardization procedures, tighten drying schedules, or bring in additional verification steps for in-process intermediates.
Feedback from dietary supplement and pharma customers in particular keeps us on our toes regarding trace pesticides and allergen risks. These clients run their own independent screens, and their direct reporting keeps our team aware of changes needed before regulations enforce a new threshold. Over time, we’ve added more frequent audits to our supply chain and set up redundant checks for any production changes, ensuring we avoid last-minute surprises for both us and our partners.
Our technical team keeps up-to-date with changes in regional and international standards—not just what the law requires, but what industry leaders are starting to demand. We invested in newer HPLC and GC-MS analytics, which pay off when new or unexpected impurities show up on a chromatogram. This responsiveness helps our plant quickly reroute batches, so no customer ends up on the wrong side of a label claim or faces a halt in a critical batch.
Handing responsibility for environmental impact to someone else never felt right. Our operation puts a lot of effort into both minimizing and tracking waste, not just for audits but for genuine operational improvement. Scrubbing and recovery systems for solvent emissions took time to install, but real-world reductions in air release and improved plant safety more than justified the outlay. By reprocessing side-streams from the main acid crystallization, we close loops that other bulk providers ignore, and the result is less landfill waste and lower long-term disposal expenses.
Meeting evolving environmental requirements is a constant challenge—both a technical and a business issue. Law changes aren’t always predictable, but having a built-in feedback loop and strong incident logging means we notice trends early enough to adapt. Every bit of effort we put in to minimize reaction waste or cut energy consumption finds its way back to both our product economics and our compliance standing. On a practical level, smaller details, like worker exposure controls, safe drum handling, and honest labeling, add up to bigger trust throughout the supply chain.
Our commitment extends to how we present and trace our product downstream. Every certificate shipped echoes our actual plant records, tracked by batch, with retention samples held on-site for future safety, verification, or improvement action. Transparency keeps us anchored. Customers value what they can see—we don’t shy from sharing origin, testing logs, or non-conformity records when asked. This openness forms the backbone of our relationships and shapes both long-term trust and sharper improvements.
Production challenges will always shift with technology, regulation, and market demand. Experience teaches that even the most stable process or well-liked compound hits roadblocks: supply logjams, shifts in demand types, sudden quality concerns from an end market. Having weathered more than a few, our plant keeps close to both our suppliers and end-users. By maintaining a two-way line from drum fill to final application, we catch the first signs of trouble and put the right people on the problem—whether it’s a production hiccup, a new test need, or an opportunity that comes from a customer’s new idea.
The story behind every ton of P-Hydroxycinnamic Acid is really a story about direct involvement at every stage: from tracking source plants, controlling extraction and synthesis, monitoring granulation in real time, to seeing each drum safely boxed for shipping. By tying technical depth, hands-on plant know-how, and honest feedback into every run, the acid that reaches the world from our docks carries a real mark of who made it and how it got there. Each day provides another chance to refine, adapt, and build better—both for those who use our material and for the team that stands behind it.