Products

Methionine

    • Product Name: Methionine
    • Chemical Name (IUPAC): 2-amino-4-(methylthio)butanoic acid
    • CAS No.: 63-68-3
    • Chemical Formula: C5H11NO2S
    • Form/Physical State: Solid
    • Factroy Site: Nanbao Development Zone, Tangshan City, Hebei Province
    • Price Inquiry: sales7@bouling-chem.com
    • Manufacturer: Tangshan Sanyou Group Co., Ltd
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    Specifications

    HS Code

    856819

    Chemical Name Methionine
    Molecular Formula C5H11NO2S
    Molar Mass 149.21 g/mol
    Appearance White crystalline powder
    Solubility In Water 30 g/L at 25°C
    Melting Point 281°C (dec.)
    Pka1 2.13
    Pka2 9.28
    Cas Number 63-68-3
    Iupac Name 2-amino-4-(methylthio)butanoic acid

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

    Packing & Storage
    Packing Methionine is packaged in a 25 kg net weight fiber drum with an inner polyethylene liner, sealed and clearly labeled.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for Methionine: Typically loads about 16-20 metric tons, packed in 25kg bags or bulk, depending on supplier.
    Shipping Methionine is typically shipped in tightly sealed containers made of materials compatible with the substance, such as plastic or fiber drums. The containers are labeled according to safety and regulatory guidelines. It should be transported in a cool, dry environment, away from incompatible substances, and handled according to standard chemical shipping protocols.
    Storage Methionine should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from direct light, moisture, and incompatible substances such as strong oxidizing agents. The storage area should be clearly labeled and comply with local safety regulations. Avoid excessive heat and ensure proper segregation from food and feed products to prevent contamination.
    Shelf Life Methionine has a typical shelf life of 2-3 years when stored in a cool, dry, and tightly sealed container.
    Application of Methionine

    Purity 99%: Methionine with 99% purity is used in animal feed formulations, where it enhances growth rate and feed conversion efficiency in poultry and swine.

    Molecular Weight 149.21 g/mol: Methionine at a molecular weight of 149.21 g/mol is applied in cell culture media, where it supports optimal cell proliferation and protein synthesis.

    Crystalline Form: Methionine in crystalline form is used in pharmaceutical supplements, where it ensures rapid dissolution and high bioavailability in human dietary products.

    Particle Size 200 mesh: Methionine with a particle size of 200 mesh is utilized in premix manufacturing, where it improves blend homogeneity and dosage accuracy.

    Stability Temperature 70°C: Methionine with a stability temperature up to 70°C is incorporated into high-temperature pelleted feeds, where it maintains amino acid integrity during processing.

    Water Solubility 50 g/L: Methionine with a water solubility of 50 g/L is employed in liquid nutritional supplements, where it provides efficient mixing and uniform distribution.

    Melting Point 280°C: Methionine with a melting point of 280°C is used in specialized chemical synthesis routes, where it supports process stability under high thermal conditions.

    Pharmaceutical Grade: Methionine of pharmaceutical grade is used in parenteral nutrition, where it ensures compliance with stringent health safety standards.

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    Certification & Compliance
    More Introduction

    Methionine: Feeding Productivity, Shaping Tomorrow

    What Methionine Brings to the Table

    Methionine stands among the essentials. As chemical producers, we have followed this product from the trial scale in the lab through packed rail cars heading for integration in farms and feed mills. Methionine isn’t just another additive. For many nutritionists and feed manufacturers, it often unlocks higher growth rates, stronger immunity, and lower production costs. Its structure makes it irreplaceable for protein synthesis in livestock, poultry, and aquaculture. Each batch we produce goes through rigorous scrutiny: purity checks, particle size analysis, and extensive handling tests. Methionine, whether as DL-Methionine or its analogues, carries a consistent responsibility—to provide a dependable source of sulphur-containing amino acid where plant-based feeds fall short.

    From Chemistry Bench to Feed Bins: Making Quality Real

    Methionine production in our plant starts with tried-and-trusted chemical synthesis routes. The classic process relies on acrolein and methyl mercaptan, optimizing catalysts to boost yields, reduce byproducts, and keep the process safe. Finished methionine comes in the form of white crystalline powder or granules. Particle size ranges from 850 to 250 micrometers for most applications, depending on equipment calibration. Bags load at a standard 25 kilograms, with bulk options supplying major premixers. We monitor impurities down to single-digit ppm. Typical purity exceeds 98.5%, as even small contaminants can derail bioavailability for animals.

    On the Farm: Methionine’s Impact Shows Clearly

    Ration formulation changes fast, yet methionine remains on every feed mill’s list. Producers working with us know real-world results matter. Corn and soybean meal diets fall short in methionine, especially for broilers and layers. The outcome without it is bare: slow growth, ragged feathers, higher feed conversion ratios, and reduced egg sizes. By supplying a source of methionine, farms see higher daily gain, better feather coverage, and improved egg uniformity. The visible changes in bird health remind us why keeping production quality high is non-negotiable. We take feedback from integrators seriously because animal performance is the true measure of our work.

    DL-Methionine, L-Methionine, and Hydroxy Analogues: Sorting Out the Differences

    Not all methionine is the same. DL-Methionine, our mainstay product, consists of both D and L isomers. Animals can metabolize both forms efficiently. L-Methionine appears only as a single isomer. It costs more to manufacture but matches what animals find in nature. For most poultry and swine, the practical effects are comparable. Methionine hydroxy analogues, like MHA-FA, differ in absorption patterns and handling, often used where liquid products suit industrial operations. We choose which route to scale up after deep technical exchanges with nutritionists, since a farm’s equipment, storage capacity, and blending system shape what works best. Optimizing choices prevents feed waste and environmental overloading.

    Purity, Handling, and Mixing: Lessons Learned in Manufacturing

    Every ton comes with its own challenges. Moisture sensitivity can affect some methionine grades, so we keep drying and packing in controlled conditions. Caking and flowability prove troublesome in humid seasons, especially for tropical clients. Our lines switched early to continuously monitored airlocks, and anti-caking agents when the formula allows. Sometimes customers attempt direct addition into feed mash, resulting in uneven dispersion. We train teams on sequential mixing and recommended dosages. Accepting occasional disruptions—from foreign body detection shutdowns to bag tearing—helps build operational experience. Working closely with processing engineers, we innovate packaging that simplifies dumping, prevents cross-contamination, and survives long-distance sea freight.

    Meeting Regulations and Traceability: Safety Never Stops

    We operate in regions where feed regulations take different forms. Europe enforces detailed limits on dioxins and heavy metals. China mandates residue testing before shipment. North America expects robust shipment auditing and backtracking. This creates a complicated paper trail, but our experience tells us traceability matters most when things go wrong. Every production campaign is assigned a batch code. If we ever detect quality variance, we trace, recall, and sample the exact consignments. We store reference samples for years—sometimes even when regulatory guidance says less is enough. Trust grows from transparency, and any manufacturer who ignores this learns the hard way.

    Environmental Investments: Methionine as Part of a Bigger Picture

    The pressure to cut emissions affects every chemical producer. Methionine plants must capture sulphur gases, recycle methanol, and treat wastewater rigorously. Biological methods invert waste methionine streams into useful products. Efforts to cut carbon footprints use renewable hydrogen and membrane separations. Customers, especially multinationals, increasingly ask for a lifecycle analysis—how much CO₂, water, and energy each kilo of methionine costs. Our teams map and review these totals, aiming to cut use of nonrenewable resources. There’s no room for shortcuts. Auditors walk our facilities, checking scrubbers, energy meters, and effluent quality. Reports aren’t just filed—they are scrutinized and lead to real process upgrades.

    Research, Development, and Nutritive Value

    Some ask if methionine is just a commodity, but the research keeps turning up new angles. Recent studies clarify its links to gut health, methylation in the liver, and resilience during heat stress. We don’t copy-paste generic recommendations, but actively partner with universities to test new combinations. We run in-house trials, resetting feed lines, measuring weight gain, and monitoring health markers. As manufacturers, we see blend tweaks and byproduct utilization as ongoing projects, not as quick fixes. Every season brings fresh challenges—raw material fluctuations, output changes, and shifts in animal metabolic demand. Our teams stay ready with data, not speculation.

    Global Sourcing and Local Needs

    Supplying methionine isn’t about filling bags; it's about aligning global supply with real needs. African poultry growers face different issues than European integrators. Heat, storage, and cost sensitivity differ by region. We learned to match product forms—crystal, granule, or liquid—with actual field conditions. Shipping to arid zones requires extra sealing to prevent caking. Making feed for aquaculture in Asia often relies on blends that differ from what European layer farmers expect. Data from each client region feeds back to our development lines. The result: constant refinement, without relying on one-size-fits-all answers.

    Operational Challenges: Raw Material Sourcing and Price Volatility

    Raw material supply changes overnight—especially for inputs like methanol and methyl mercaptan. Geopolitical issues, logistics bottlenecks, and weather events all impact cost and availability. As a manufacturer, stockpiling isn’t always the answer; raw materials age fast. Instead, we work with diversified suppliers and maintain spot-buying readiness. Our procurement team analyses market signals and makes fast decisions. Price spikes can make life difficult for feed producers, but clear communication—explaining causes and expected duration—helps livestock operators plan ahead. Long-term contracts can soften swings, while constant surveillance keeps us from being blindsided.

    Comparing Methionine Sources: Synthetic, Fermented, and Analogues

    Chemical synthesis dominates the methionine supply, though fermentation-based L-methionine attracts attention. Fermentation offers lower environmental impact, but production costs and scale still limit broad adoption. We watch this space, adapting as bioprocess costs shift. For now, most feed manufacturers find synthetic DL-methionine delivers reliable results and year-round supply. Analogues, especially MHA (methionine hydroxy analog), sometimes cost less, suit liquid inclusion, and offer tolerance to variable processing conditions. Each customer receives direct consultation—not just sales talk. We help evaluate which product and inclusion rate actually raise profits, not just check a nutrient box.

    Feed Formulation Practices: Getting the Dosage Right

    Methionine inclusion looks simple on paper but mixing errors happen at all scales. Over-inclusion drives up cost, and under-inclusion limits productivity. Feed labs run amino acid assays on feed batches, matching recommended dosages to actual levels. We regularly visit customer mills, sample end-products, and verify blend accuracy. Training staff to weigh, premix, and sequence additions makes a visible difference at the farm level. In our experience, open lines of communication between manufacturers, blenders, and end-users best prevent costly dosing mistakes.

    Changing Regulations: Preparing for Tomorrow’s Nutrient Standards

    Governments tighten nutrient discharge limits every year. Methionine helps reduce nitrogen excretion when balanced properly in rations, which means less pollution and lower cleaning costs for farm operators. We follow proposed legislation, participate in public consultations, and share direct field results with policymakers. Our technical experts attend international regulatory meetings, making sure that product data reflects actual field use, not just best-case scenarios. This close connection between regulation and application means we can act fast—tweaking specs, updating labels, and translating science into practice.

    Solving Feed Mill Issues: Product Form Supported by Experience

    Feed mills work differently in Colombia, Bangladesh, and Germany. Some run single-shaft mixers, others use twin-screw extrusion. The ideal methionine for each line may vary; fine powder sometimes drifts in open air, while granular forms can create separation in longer augers. By observing real-world loading and discharge, we suggest packaging and dosing solutions that genuinely save time and manpower. Bulk totes suit high-volume integrators, while sealed foil bags help small breeders in high-humidity zones. Our technical staff test run every new packaging system before a client rollout, looking for leaks, handling strain, and compatibility with delivery schedules.

    Bioavailability and Nutrient Interactions

    Methionine doesn’t work in isolation. Limiting amino acids interact; missing lysine or threonine can bottleneck animal performance even if methionine appears adequate. Feed manufacturers who skip periodic amino acid analyses risk invisible performance losses. We foster direct conversations with animal nutritionists, testing new ratio models and troubleshooting performance dips. This experience-driven feedback loop helps us guide customers in balancing methionine with the spectrum of nutrients, not as a silver bullet but as a vital cog.

    From Manufacturer to Farm: Trust Built on Evidence

    Farms need more than a label. They want consistent results—visible in the weekly weight charts and egg trays. Being the producer gives us the ability to inspect every step, keeping control over particle size, bulk density, and trace residues. Technical feedback from users—good and bad—comes straight to our R&D and plant operations teams. No intermediary shields our plant from responsibility. That’s why clients often call after hours, discussing storage tips or feed mixing errors. Manufacturer support doesn’t end at the loading bay.

    Auditing and Continuous Improvement

    Our process lines never stay static. Lean manufacturing audits, both internal and by third parties, root out hidden waste and bottlenecks. We invest in operator training to prevent human errors at shift changes. By continually refining every production step—from synthesis and drying to packing and palletizing—we hold ourselves to tight defect rates and delivery timelines. Real-time adjustments—temperature changes, water removal rates, or fractionations—respond to batch-specific challenges. No process, even one running for years, survives without routine scrutiny.

    Collaboration in Innovation: Listening to Feed Makers

    One lesson learned over the years: feed makers’ practical wisdom often beats theoretical best practices. Listening to their complaints about dustiness, sticking, or clumping informs each improvement. We consult with those who run both small mixers and sprawling modern plants. Pilot-scale testing at customer sites allows us to adapt and optimize formulations, packaging, and logistics. No improvement happens in isolation. Our plant engineers and nutrition experts routinely sit down with clients to solve persistent or emerging issues.

    Balanced Growth: Keeping Up With Global Demand

    Methionine demand has surged worldwide. Expanding production brings on new reactors, more storage, and higher logistical complexity. We stagger expansion in step with qualified operator hiring, making sure technical standards hold up even as volumes climb. Production surges during disease outbreaks (as with avian flu) have taught us not to compromise quality for speed. We’d rather cap shipments than deliver subpar product, and our partners understand this approach. Success means scaling responsibly, not just maximizing output.

    Feed Safety: Real-World Accountability

    Methionine quality impacts the food chain directly. As the plant operator, we experience the repercussions of any slip. Even a minor contamination or mislabeling incident can trigger a cascade—withdrawal notices, media scrutiny, and lost trust. Vigilance starts at receiving bay: auditing suppliers, unloading trucks under surveillance, and rapid testing. Production runs only after all checks pass. Finished goods wait in quarantine before shipping. Spot checks cover storage houses and shipping docks. These controls aren’t regulatory boxes—we learned their necessity through hard lessons.

    Coping With Disruptions: Learning From the Unexpected

    Every supply chain faces disruptions. From power outages to port strikes, plant shutdowns to surges in demand, keeping clients supplied has tested our team. Pre-crisis planning, robust stock tracking, alternate logistics, and clear customer updates all help maintain supply. During global events, we’ve kept critical users updated, laying out options for rationing, alternate sourcing, or adjusting inclusion rates temporarily. Accountability grows during a crisis, as does the trust our customers place in those who make the product, not just sell it.

    Looking Forward: Where Methionine Manufacturing Goes Next

    Future methionine plants will likely use greener processes, recycle more byproducts, and run on less energy per ton. Next-generation catalysts, bioprocessing, and digital process control promise higher yields and lower minimum batch sizes. Our teams already review new catalyst designs, trial membrane filtration, and explore ways to valorize production side streams. We remain open to collaborative R&D, pilot-scale production with startups, and alliances with universities to accelerate improvements. For us, methionine is not a finished story—it remains a field for constant learning and innovation.

    Responsibility Beyond the Factory Gate

    Being the manufacturer means the responsibility never really leaves us, even after shipment. Every kilo shipped connects directly to farm livelihoods, animal health, and—ultimately—end consumer food safety. As regulatory tides shift, feed ingredient trends rise or fall, and customer expectations grow, we adapt and lead. Direct relationships, backed by a culture of transparency and hands-on troubleshooting, remain our foundation. By pairing technical rigor with open lines of feedback, methionine continues fuelling the world’s demand for quality protein, one carefully made batch at a time.