| HS Code | 433181 |
| Chemical Name | Polyoxyethylene (4) Sorbitan Monostearate |
| Common Name | Tween 61 |
| Cas Number | 9005-67-8 |
| Molecular Formula | C26H54O10 |
| Appearance | Yellow to amber oily liquid or waxy solid |
| Solubility In Water | Dispersible |
| Hlb Value | 9.6 |
| Molecular Weight | 522.70 g/mol |
| Odor | Characteristic, mild |
| Melting Point | 40-45°C |
| Ph Value | 5.0–7.0 (5% in water) |
| Function | Nonionic surfactant/emulsifier |
| Storage Conditions | Cool, dry place; tightly closed container |
As an accredited Polyoxyethylene (4) Sorbitan Monostearate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging is a 25 kg white plastic drum, securely sealed, labeled with "Polyoxyethylene (4) Sorbitan Monostearate" and safety information. |
| Shipping | **Polyoxyethylene (4) Sorbitan Monostearate** is typically shipped in tightly sealed, food-grade drums or containers to prevent contamination and moisture absorption. It should be stored in a cool, dry place away from direct sunlight and incompatible substances. Handle with care to avoid spills; follow all local regulations for chemical packaging and transport. |
| Storage | Polyoxyethylene (4) Sorbitan Monostearate should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances. Protect the chemical from moisture, heat, and direct sunlight. Keep the storage area clearly labeled, and avoid exposure to strong oxidizers. Ensure that the area is equipped with suitable spill containment and cleaning materials. |
Polyoxyethylene (4) Sorbitan Monostearate, a nonionic surfactant, plays an essential role in several industrial downstream applications. Its emulsifying, solubilizing, and dispersing capabilities support complex manufacturing requirements for diverse sectors. Our manufacturing expertise ensures consistent batch-to-batch quality and strict adherence to global standards across every application segment.
Major food manufacturers use this material to stabilize water-in-oil emulsions for margarine, shortening, and processed cheese slices. During production, it helps prevent phase separation and ensures smooth mouthfeel in high-fat formulations, even through temperature fluctuations and prolonged storage. Blenders introduce it during the fat melting stage for precise integration, adjusting dosage based on fat content, moisture, and target viscosity. Aligning with global food safety laws is critical, with continuous QC checks at each blending and packaging step.
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Pharmaceutical companies integrate polyoxyethylene (4) sorbitan monostearate as a critical emulsifier and solubilizer for the preparation of oil-in-water and water-in-oil topical bases. It provides consistent distribution of actives and enhances skin-feel characteristics. Controlled GMP environments require validated cleaning and dosing procedures. The raw material typically enters formulations during the heating phase for excipients and is blended ahead of active ingredients to avoid incomplete dispersion. Documentation and traceability support batch release for regulated markets.
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Synthetic lubricant producers add this surfactant to coolant and lubricating formulations for metalworking operations, such as cutting, grinding, and forming. It stabilizes oil-in-water emulsions and improves detergent action for removing fine particulates from metal surfaces. Integration happens during batch blending, with continuous agitation and pH monitoring. Blends must remain stable under high shear and heavy contaminant loads. Inline QC processes check emulsion breakdown and foam control for extended sump life in automated workshops.
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Manufacturers of synthetic fibers use this ingredient as a lubricant and anti-static agent in spin finish applications for polyester and polyamide (nylon) production. The surfactant reduces fiber-to-fiber friction and static build-up during high-speed spinning, winding, and weaving operations. Specialists meter it into aqueous emulsions for spray or immersion methods, controlling droplet size for uniform fiber coverage. Downstream, it supports dye uptake and prevents defects during texturizing, crimping, and finishing.
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Crop protection formulators employ this surfactant as a wetting and dispersing agent in suspension concentrates (SCs) for herbicides, fungicides, and insecticides. The material enhances the wetting of active ingredient particles, promotes uniform suspension in aqueous concentrates, and assures stable dilution in field tank mixes by farmers. The surfactant enters the formulation with other dispersants before high-shear milling. Careful laboratory and pilot-scale tests guide the final ratio to avoid sedimentation or excessive foam during application.
Industry compliance standards
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Competitive Polyoxyethylene (4) Sorbitan Monostearate prices that fit your budget—flexible terms and customized quotes for every order.
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On a factory floor, few surfactants work as reliably or show as much versatility as Polyoxyethylene (4) Sorbitan Monostearate. Generated through established synthesis paths—sorbitan's esterification with stearic acid, then ethoxylation—this substance takes the form of a soft, pale-yellow paste. We produce it with a Polyoxyethylene chain average of four repeat units, which gives rise to its distinctive functional profile. This is not simply a technical ingredient; it’s a workhorse found throughout industries where technical tweaking makes the difference between a failed batch and a premium product.
Our experience reinforces the need for tight control over both input purity and reaction conditions. A consistent product exhibits an HLB value in the neighborhood of 15–16, a range not by chance but by a clear approach to balance between its hydrophilic ethoxylate chain and lipophilic sorbitan ester backbone. Most clients don’t ask for HLB; they want to know if it keeps emulsions from breaking, prevents creaming, and handles shear without separation. Those requirements trace straight back to small variations at the molecular level, so we invest in batch analytics—acid value, saponification, and water content—before anything leaves our finishing tanks. Out-of-spec means wasted runs and complaints down the line.
This surfactant shows real value where a certain texture, viscosity, or stability isn’t just desirable but mandatory. In food production, manufacturers rely on it as an emulsifier for creamy spreads, salad dressings, whipped toppings, and chocolate coatings. Globules of oil and water won’t stay homogenous on their own. Polyoxyethylene (4) Sorbitan Monostearate, also called polysorbate 60, steps in—keeping products pourable yet stable so distribution and warehouse transfers don’t wreck them.
Bakeries leverage this material when foaming and air cell durability matters for cake mixes and dessert fillings. Even in frozen desserts, it keeps fat crystallization in check, preventing sandiness. That’s not all. In industrial detergents, textile wetting pastes, paints, and personal care emulsions, its performance isn’t a guesswork affair—it follows from repeatable interfacial tension reduction and wetting behaviors we observe every season.
Pharma producers value both purity and low toxicity. Our production lines maintain critical hygiene, excluding cross-contaminants and running tight on residual ethylene oxide and heavy metals, a lesson hammered home by stricter regulatory audits and continuous customer feedback. Eye drops, topical creams, and oral supplements use this surfactant for dispersion and stability without triggering irritation.
We often get questions comparing polysorbates. Polysorbate 20 and 80, for example, come up due to their prevalence. It’s not uncommon for a new formulator to ask if one type can swap for another. In real runs, those HLB values matter more than formulas on paper suggest. Applications seeking higher water solubility move toward polysorbate 20, but heavier or oil-rich systems call for the balance struck by polysorbate 60. Polysorbate 80, from oleic acid, is more liquid and designed for different fat-protein interactions or high-load oil-in-water systems. Each grade walks a fine line between hydrophilic and lipophilic properties. Stearate base means firmer pastes, more opacity, distinctive mouthfeel for food, or stiffer body in creams.
Another point: higher ethoxylate numbers make for greater solubility but also more foaming. Not every line wants that side effect. Through years of working beside R&D and scale-up teams at customers' facilities, we’ve seen failed reformulations from simply switching grades to chase lower costs or different customs rules. Product recalls, off-taste, or inconsistent texture often follow mismatched selection.
Running a chemical manufacturing line brings responsibilities beyond just technical outputs. Each drum or tote of polyoxyethylene (4) sorbitan monostearate must comply with food, pharma, and industrial regulations. We keep documentation for every lot—batch traceability, residues, even kosher or halal status if required. Failing to provide credible supply chain data or offering raw materials that deviate from international standards puts operations at risk. Our customers have experienced border stops or extended customs reviews for shipments where documentation didn’t align; for this reason, we commit resources to maintaining up-to-date certificates and real records, not boilerplate paperwork.
Over the years, supply pressures have hit all parts of the surfactant industry. Plant shutdowns, stearic acid price swings, or ethylene oxide shortages affect output. When feedstock costs jump, shortcuts through dilute or out-of-spec product flood the market. Our position has always meant weathering these cycles—running lean on overhead but holding quality and transparency steady. In slowdowns, we support our regular buyers by maintaining supply, rather than dumping into spot markets. Customers remember the difference in peak demand cycles.
Blending isn’t just about mixing; it’s a balancing act. Use too much or the wrong grade, and products slump, separate, or lose shelf life. Use too little, and process losses run up costs. We offer technical support based on our manufacturing data—how different blend ratios influence viscosity, phase separation, and the final product’s organoleptic properties. For example, in creams and lotions, excess polysorbate 60 can build up tack or stickiness, while shortfall leaves chunks and graininess. In chocolate coatings, too much throws off snap and gloss; too little leads to bloom in storage.
The long experience in multiple sectors provides a real feel for which suppliers actually troubleshoot formulations and which simply ship a drum and move on. Customers with batch troubleshooting—heat-run failures, unexpected pH shifts, or viscosity drift—benefit from our archived analytic data. We conduct routine on-site visits to major accounts, troubleshooting issues from ingredient interaction to equipment scaling. It’s common to find that a minor temperature bottleneck or a shift in atmospheric moisture can change results, not just the raw input surfactant. By comparing our production parameters with those on the receiving line, we’ve often helped optimize plant efficiency or reduce costly downtime.
Factories need to move at pace, so we design packaging for bulk handling—200 kg drums or IBC containers with sealed lids and tamper-evident seals. Polysorbate 60 keeps best in clean, cool spaces away from sources of moisture or direct sunlight. Based on plant observations, containers stored at higher temperatures develop surface films or micro-crystals—problems that don’t just disappear in blending, but become defects in finished lines. Our technical teams set standard shelf lives after repeated in-house stability tests across temperature ranges that match where clients actually store their supplies.
Keeping lines clean matters to downstream quality. Polyoxyethylene (4) sorbitan monostearate picks up flavors and off-odors easily, which then pass right into final food or personal care goods. We run tight on housecleaning cycles and recommend receiving partners rinse tanks with food-grade detergents, not just rinse with hot water. Continuous flow lines reduce the risk of build-up, but for batch processes, periodic cleaning avoids cross-contamination and unexpected shifts in microbe counts.
The real payoff from this surfactant doesn’t show up on technical specifications, but in lines that run smoothly, products that ship on time, and customers who minimize returns. Over many years, we’ve worked with technical teams who challenged us for new specs—lower color, higher purity, or adjusted acid values. Each request pushes our QA team to improve process tracking. Meeting these demands has left us with one of the most consistent product ranges you’ll find, along with a library of test results and real-world use cases. This kind of history means, when customers request a guarantee, we can point directly to years of uninterrupted supply and hands-on support.
Few investments do more for a customer’s trust than transparent problem resolution. We publish batch performance results, encourage plant audits, and open technical discussions with process engineers from every client, regardless of company size. Borrowing from our best-performing runs, we share those insights freely: real batch time logs, agitation rates, and results from pilot-scale studies.
Over the years, our crew has adopted both manual and automated monitoring—tracking every temperature, pressure, and reaction time on site. In earlier years, changes in raw material batches often caused unseen drift in final product. Today, feedstock evaluation labs flag any fatty acid content outside our acceptance window, while batch reactors run on programmable logic systems to lower operator error. Every deviation discovered during product analysis brings a review meeting, not only within technical but also with packaging and shipping teams. We keep all parties accountable, from synthesis to outbound logistics.
We’ve found that best results come when experienced operators stay on long terms—people with hands-on familiarity with the tricky handling of sorbitan esters and the specific quirks of each reactor. Retaining skilled labor reduces costly mistakes; so we invest in ongoing training, not just annual certification box-ticking. We believe the final results reflect the knowledge and pride of those who make the product, not just productivity numbers.
Safe practices go beyond documentation. Process safety—strict temperature control, use of enclosed systems, vapor management—keeps accidents rare. Handling polyoxyethylene (4) sorbitan monostearate involves low acute risk, but in bulk, it’s slippery and can complicate clean-up or fire fighting. We minimize waste by rerouting side-streams for secondary use rather than dumping them. By-product streams get evaluated for upcycling into lower-grade surfactant blends or non-food uses.
Environmental compliance comes down to more than checking a regulatory box. We maintain waste handling and neutralization capability on-site. Biodegradability studies show good results for this surfactant type; still, we contain process spills, recycle rinse water, and push partners toward closed-loop cleaning wherever possible. For packaging, we work with customers who return drums or negotiate bulk refills to reduce plastic waste. In the long run, these choices have trimmed costs and built stronger links in the value chain.
From food and pharma to industrial customers, those who market to consumers increasingly want performance with traceability. We address this need with digital lot tracking and record-keeping systems. Teams get access on short notice to product records and analytical data for every shipment. We take seriously the need to provide quick answers to ingredient origin and supply continuity. In crisis years—pandemics, shipping slowdowns, regulatory shifts—our backup plans and open stock of basic inputs helped customers stay open when others closed.
We keep an eye on emerging needs. Clean label requirements, “free-from” marketing campaigns, and demands for vegan sourcing or allergen avoidance all influence sourcing and QA. Besides technical specs, our buyers ask about palm-based stearic acid status, GMO risks, and processing aids. Our ingredient is free of animal DNA, based on our certification path and actual production records, and our organization is working with suppliers to guarantee best practices.
Refining and shipping polyoxyethylene (4) sorbitan monostearate for years gives us practical authority to comment on its uses. Our support for customers covers far more than standard quality sheets—it draws on field troubleshooting, supply chain management, and direct aid during both busy and slow periods. In our view, manufacturers who pay consistent attention to both process details and shifting customer needs deliver the best results, both short-and long-term. End users get a surfactant that performs batch after batch, under widely varying conditions, with clear technical backup. If new challenges arise in regulations, formulations, or supply, we stay ready to tackle them side by side with our users—and to keep production steady in a world where surprises are a near daily event.
