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HS Code |
762388 |
| Cas Number | 105-55-5 |
| Molecular Formula | C7H12O5 |
| Molar Mass | 176.17 g/mol |
| Iupac Name | 1,2,3-Propanetriyl diacetate |
| Other Names | Diacetin, Glycerol diacetate |
| Appearance | Colorless liquid |
| Odor | Slight, mild odor |
| Boiling Point | 258 °C |
| Density | 1.19 g/cm³ (20 °C) |
| Solubility In Water | Miscible |
| Melting Point | -20 °C |
| Flash Point | 153 °C |
| Viscosity | 26.9 cP (20 °C) |
As an accredited Diacetin factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Diacetin is packaged in a 25 kg blue HDPE drum, featuring a tightly sealed lid and compliant hazard labeling for safe transport. |
| Shipping | Diacetin is typically shipped in tightly sealed drums or containers to prevent contamination and moisture absorption. It should be transported under ambient conditions and protected from extreme temperatures. Proper labeling and documentation are required, and handling must comply with local regulations to ensure safe delivery and storage. Not classified as a hazardous material. |
| Storage | Diacetin should be stored in a cool, dry, and well-ventilated area away from sources of ignition, heat, and incompatible substances such as strong oxidizers. Keep the container tightly closed when not in use to prevent moisture absorption and contamination. Store in a chemical-resistant container, labeled appropriately, and avoid prolonged exposure to air and light to preserve product quality. |
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Purity 99%: Diacetin with purity 99% is used in food emulsifiers, where enhanced ingredient dispersion and improved texture stability are achieved. Viscosity 25 mPa·s: Diacetin with viscosity 25 mPa·s is used in plasticizer formulations for cellulose acetate, where flexibility and transparency of the final films are improved. Molecular weight 218.2 g/mol: Diacetin with molecular weight 218.2 g/mol is used in tobacco humectants, where it maintains consistent moisture levels in tobacco products. Melting point -30°C: Diacetin with a melting point of -30°C is used in antifreeze compositions, where low-temperature fluidity is reliably maintained. Water content <0.5%: Diacetin with water content less than 0.5% is used in pharmaceutical excipients, where stability and shelf life of the active ingredients are extended. Stability temperature 100°C: Diacetin with a stability temperature of 100°C is used in chemical synthesis reactions, where product safety and efficiency at elevated temperatures are ensured. Acid value <1 mg KOH/g: Diacetin with an acid value lower than 1 mg KOH/g is used in cosmetic formulations, where product irritation risk is minimized and skin compatibility is increased. Refractive index 1.43: Diacetin with a refractive index of 1.43 is used in flavor carriers, where clarity and uniform solubility of flavoring agents are optimized. |
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There are certain products in the chemical industry that quietly make everyday life possible without attracting much attention. Diacetin fits this description. Also known as glycerol diacetate, Diacetin brings a practical solution to the table for manufacturers and formulators who want better flexibility and stability without masking performance. It’s a clear, almost colorless liquid with a subtle odor, mainly made up of diacetylated glycerol esters. This technical detail might sound minor, but it turns out to change the way industries, from plastics to cosmetics, achieve their goals.
A big part of what drew me to Diacetin over the years is how it streamlines processes. Back when I worked with resin formulations, plasticizers often complicated consistency or exposed products to unwanted volatility. But Diacetin found a niche as a safer, more controllable alternative that sidesteps many of the headaches tied to traditional additives such as phthalates and low-molecular esters. Its moderate viscosity is easy to measure, and the boiling point sits well above industry-typical levels, so it performs reliably even in demanding manufacturing lines or in formulations needing long shelf life.
The everyday user might glaze over technical data, but certain specs make a direct difference. Diacetin’s boiling point averages around 280°C, and it maintains a low enough viscosity to mix quickly into a wide variety of matrices—from plastic cornstarch blends to fragrance oils. Unlike denser plasticizers, it won’t gum up process lines. This means manufacturers get a faster, more even mix, and less maintenance downtime.
Purity sits above 99%, so designers get more active material and less contamination from byproducts. In the lab, we found water solubility levels high enough that any residue rinsed out easily, so no one wastes time cleaning vessels. Density runs close to 1.16 g/mL. For folks who worry about shifts in freezing temperatures or humidity, Diacetin stays stable. A product manager from a polymer firm once pointed out to me that, compared to old-school phthalate formulations, Diacetin gave them less trouble with stickiness or edge-curl in their produced sheeting. That is not a small win.
You may not see it on a shelf, but Diacetin finds its way into an array of finished goods. In plastic films, it softens and improves flexibility without the off-gassing you find with legacy plasticizers. Cosmetic formulators, always looking for that fine line between comfort and structure, rely on Diacetin to make creams smoother but not greasy. Even chewing gum producers add it for texture—providing a pleasant chew instead of a crumbly or stiff bite, a difference you notice without even realizing it.
In my own career, I worked with a team developing anti-fog coatings. Many of the first-generation blends fogged up quickly or left streaks. A switch to Diacetin smoothed that out. It let us use lower application temperatures, sped up line throughput, and left fewer unwanted odors. Looking back, that kind of incremental improvement meant our team hit quarterly targets and customers sent fewer complaints.
Safety matters, both in the plant and downstream. Diacetin doesn’t carry the same baggage as phthalates or chlorinated additives. Acute toxicity is low, and there’s extensive data supporting its use in products that may touch the skin. Regulatory reviews in the EU and US have cleared it for certain food contact and cosmetic applications. Anyone who’s spent time in a formulation lab has a story about additives that turned out to be problematic secrets. Diacetin tends to avoid those pitfalls.
Waste and environmental persistence ought to be central concerns every time you pick a new chemical. Diacetin degrades readily—microorganisms break it down, whether in an industrial wastewater plant or the wider environment. This fact nudges companies toward circularity, especially as more downstream partners demand proof of lower long-term impacts.
During a pilot trial at a packaging plant, we ran side-by-side blends of Diacetin and legacy plasticizers. Measurements showed Diacetin’s breakdown was quick, leaving less risk of leaching over time. The difference didn’t just show up on lab reports: maintenance crews called in less often, and plant supervisors spent fewer hours remediating sticky residue from spills.
Many chemistries on the market have been around longer than anyone working today. It’s easy to keep doing what’s familiar, but Diacetin shows real benefits in the way it sidesteps old pitfalls. Old-school plasticizers, especially phthalates, come under scrutiny for potential toxicity, migration into food or skin-contact products, and tricky handling characteristics. Diacetin skips nearly all of those headaches.
Flexibility is the hallmark of Diacetin. Rather than fighting to balance between softening and stability, manufacturers get both. In trials for synthetic leathers, it held up without cracking or yellowing. In paints, it helped dissolve pigments smoothly and avoided clumping seen with bulkier plasticizers. Suppliers I’ve spoken to pointed out that their customers get longer shelf life and more predictable process runs—not something you can say about every additive out there.
One practical example came up in a project making medical tubing. Phthalates faced regulatory bans, and alternative esters left the product either too brittle or tacky. Diacetin ended up as the bridge—a softening agent that did not compromise clarity or invite regulatory trouble. Hospital customers noticed the difference in texture and safety records improved.
Even though Diacetin checks a lot of boxes, no product fits every application. Some manufacturers find that if they push material loads high, interactions can change final properties. This cropped up in a fiber extrusion project I was involved in—a simple tweak in concentration fixed it, but it was a reminder that even versatile solutions need tuning.
Regulatory landscapes keep shifting. Although Diacetin enjoys a better profile compared to phthalates and some adipates, it’s necessary to keep an eye on updated rules, especially as governments look harder at all organics in sensitive uses like toys or food packaging. A responsible approach means clear documentation and full transparency from suppliers.
Supply chain consistency matters just as much as chemistry. During the pandemic, sourcing quality intermediates became trickier. Teams who relied on Diacetin had to double-check supplier verification, since purity or manufacturing changes can make or break a critical batch. Building deeper supplier relationships and setting up batch-testing protocols proved essential to keep factories running and customers happy.
Running a formulation shop, I saw a shift toward Diacetin not just for problems solved, but because it opened doors for new products. Beverage closures, food wraps, adhesives, nail polishes, and coatings all benefit from compounds that blend predictability with safer health profiles. One notable project in floor coatings showed that with Diacetin, formulators could create clear finishes that held up under sunlight without the yellowing or brittleness that dogged older chemistries.
Another story arrived from the confectionery sector. Gum base manufacturers found Diacetin gave the desired chew without sudden hardening, especially in climates where temperature swings ruined batch consistency. By reformulating, shelf life stretched by months, store complaints dropped, and less waste ended up at distributors.
Some manufacturers who long depended on high-odor or high-viscosity agents switched over after direct customer feedback—nobody enjoys a distracting smell surviving in a finished skincare product. Diacetin’s low-odor profile prevented that, and even in thicker cream bases or lipstick blends, spreadability remained smooth.
Quality in the chemical sector depends on more than the base compound—it’s the level of trust and knowledge a supplier brings. While Diacetin has proven strengths, purchasing departments should still ask for batch-level certificates, check for history of recalls, and review the life-cycle assessments. Skipping those checks exposes buyers to risk, especially in regulated industries.
A deeper understanding of its performance under real-world stresses only comes with open communication among end-users, suppliers, and technical advisors. Plants moving toward process automation need feedback loops to capture when Diacetin modifies product behavior in large-scale runs. Simple pilot runs save money long-term, letting teams adapt dosing before jumping to full-scale manufacturing. This loop mirrors the best lessons I've seen in scale-up operations.
Downstream partners and regulators now look for proof that products like Diacetin truly break down under expected conditions—no empty marketing promises. Lab studies and field monitoring both play roles. One environmental assessment used actual discharge samples and tracked degradation over days, giving confidence not just to managers but to nearby communities.
Companies who get the most out of Diacetin start with solid training, not just for chemists but for line workers and quality controllers. Clear labeling, proper PPE, and up-to-date handling guides close the gap between the marketing claims and real-world safety records. Setting up internal knowledge-sharing sessions between R&D, compliance, and production pays off—by catching inconsistencies early and sharing tips on fine-tuning blends.
Strong supplier relationships reduce risks from supply chain hiccups. Instead of jumping between cut-rate vendors, companies benefit from sticking with trusted partners who provide detailed traceability, transparent data, and fast response when questions or issues crop up. Insisting on regular batch analysis for purity and consistency heads off costly missteps in regulated or technical markets.
Beyond compliance, responsible firms now invest back into research. Whether it’s working with universities to gather longer-term health data or collaborating with regulators in setting exposure limits, the leaders in this space look for ways to stay ahead of shifting demands. A company might not see the payback overnight, but those investments put them in better standing as public, regulatory, and customer expectations rise.
Most people outside of chemical circles won’t spot Diacetin on a label, but the real differences it creates ripple through everyday goods. The push for safer, more sustainable solutions doesn’t end with swapping out a single compound, but adopting better options like Diacetin makes each step forward less painful and more rewarding. From a technical manager’s viewpoint, products that minimize headaches without forcing compromise deserve attention. Less waste, lower risk, better safety records, and fewer customer complaints all add up to stronger businesses and healthier communities.
It’s important to remember that progress rarely comes from inventions that disrupt everything overnight. Often, it’s products like Diacetin—those that slot seamlessly into existing systems, quietly making materials work better—that keep the world running just a little more smoothly. With the next generation of regulations, tougher consumer demands, and tighter margins in sight, picking a performance additive with a cleaner track record moves from a nice-to-have to an urgent need.
Every industry faces a moment where it must decide — hold onto what’s worked, or adopt advances that line up with today’s realities. Diacetin stands at that intersection for anyone building plastics, cosmetics, food-safe materials, and specialty coatings. Not every new material lives up to its hype, but this one proves itself batch after batch through reduced operational hassles and a smaller environmental footprint.
For students entering the field, it’s worth looking for the understated champions. Diacetin stands out not by flashy branding, but by its ability to solve daily challenges—whether it’s cutting rework rates, eliminating lingering odors, or answering the call for substances that don’t come with regulatory baggage. In the future, as low-impact chemistry drives even the most stubborn industries forward, products like this deserve their share of the spotlight.
Chemistry, at its core, is about finding the right fit—balancing performance, safety, and cost. Diacetin nails that balance far more often than most. From personal experience, it’s been one of those tools you end up recommending to colleagues without hesitation, not just because of its performance on paper but because of real improvements seen on the plant floor and beyond.