Mannitol (CAS 69-65-8) is a white crystalline polyol labeled as E421. It tastes clean and stays dry. Therefore, it is popular in food, pharma, cosmetics, and lab R&D. In this guide you will find simple explanations of its properties, grades, applications, and compliance. Moreover, you will see the 2025–2032 market outlook and, finally, a clear comparison with sorbitol and xylitol.
E421 USP / Ph. Eur. / FCC Low hygroscopicity Direct compression Global DDP 1–3 days
Mannitol is a sugar alcohol with the formula C₆H₁₄O₆. It is an isomer of sorbitol. However, its stereochemistry is different, so its behavior changes. As a result, mannitol absorbs less moisture and compresses well. You can review its identifiers on PubChem and also on the NIST Chemistry WebBook.
Because it stays dry, mannitol keeps coatings crisp. In addition, it gives a light cooling effect and a clean taste. Consequently, formulators choose it for chewable tablets, confectionery coatings, and lyophilised systems.
You will typically see food grade (E421), pharma grade (USP/Ph. Eur./FCC), and lab grade. Each batch should come with a Certificate of Analysis (COA) and a Safety Data Sheet (SDS). In the EU, you can verify compliance on ECHA Substance Information. In the U.S., mannitol is listed under 21 CFR §180.25 and, moreover, covered in the GRAS section of 21 CFR Part 184.
💡 Match batch numbers across labels, COA, and SDS. In addition, check the SDS date and CLP/GHS format. Finally, store PDFs with your QA records for easy audits.
Mannitol acts as a sweetener, bulking agent, and anti-caking aid. Because it absorbs little water, it helps coatings stay smooth. Therefore, it works well in sugar-free gums, chocolate coatings, and pressed candies. For polyol health claims, see the EFSA opinion.
In tablets, mannitol supports direct compression and a pleasant mouthfeel. In parenterals, it often provides tonicity or stabilisation. Consequently, you will find it in injections, infusions, and inhalation powders. For a focused view, review the FDA’s draft PSG.
Mannitol adds body to dry masks and powders. It improves skin feel without stickiness. Moreover, because it is less hygroscopic, it limits clumping and extends shelf life.
In research, mannitol serves as an osmotic agent and a cryoprotectant. It also stabilises freeze-dried blends. In addition, it is a common reference material in analytical work.
Global demand is rising at a steady pace. According to Grand View Research, the market grows from about USD 451 million in 2024 to about USD 601 million by 2030 (CAGR ≈ 5%). Similarly, Mordor Intelligence shows USD 474 million in 2025 and USD 615 million by 2030 (CAGR ≈ 5.35%). For a longer view, Expert Market Research expects a CAGR near 4.5% to 2034.
| Source | Period | Forecast | CAGR | Note |
|---|---|---|---|---|
| Grand View Research | 2024 → 2030 | USD 451 m → 601 m | ~5 % | Food leads; APAC grows fast. |
| Mordor Intelligence | 2025 → 2030 | USD 474 m → 615 m | ~5.35 % | Food + pharma lift demand. |
| Expert Market Research | 2024 → 2034 | USD 458 m → 712 m | ~4.5 % | Longer horizon, steady pace. |
Overall, growth comes from sugar reduction, stable textures, and quality-by-design in pharma. As a result, Asia-Pacific drives volume, while Europe focuses on purity and documentation. Therefore, plan supply with both regions in mind, and, in addition, secure dual sourcing when possible.
All three are polyols; however, they behave differently. Mannitol is drier but less sweet. Sorbitol holds more water. Xylitol matches sucrose in sweetness but can cost more. Hence, your choice depends on texture, sweetness targets, and claims.
| Property | Mannitol (E421) | Sorbitol (E420) | Xylitol (E967) |
|---|---|---|---|
| Formula | C₆H₁₄O₆ | C₆H₁₄O₆ | C₅H₁₂O₅ |
| Sweetness vs sucrose | ≈ 50 % | ≈ 60 % | ≈ 100 % |
| Hygroscopicity | Low (stays dry) | Medium (takes up water) | Medium |
| Solubility (25 °C) | Moderate | High | Very high |
| Typical uses | Chewables, coatings, lyo matrices | Syrups, creams, humectants | Dental gum, diet sweeteners |
Therefore, pick mannitol for crisp, dry textures and clean taste. Alternatively, use sorbitol when you need moisture retention. Finally, choose xylitol when you want near-sucrose sweetness and dental positioning.
Mannitol travels well because it resists moisture. Even so, store it sealed in a cool, dry place. In addition, avoid condensation and direct sunlight. Under proper storage, shelf life is usually 24–36 months. Always confirm on the COA and, moreover, rotate stock FEFO.
CristalChem delivers worldwide (EU, UK, USA/Canada, Asia-Pacific, Other Europe) within 1–3 business days.
28 g / 500 g / 1000 g. COA, SDS, REACH. Starting from — see product page.Shop Mannitol
Optimised for chewable and ODT tablets. Starting from — see product page.Shop DC Grade
Ideal for sugar-free confectionery and dry mixes. Starting from — see product page.Shop E421
For sensitive R&D. Each lot has a COA. Starting from — see product page.Shop Low Endotoxin
For freeze-drying and stabilisation. 28 g / 500 g / 1000 g.Shop Crystalline
Disclaimer: All information provided in this article is intended solely for scientific, educational and research purposes! The data, specifications and analytical notes are based on available laboratory literature and internal R&D testing. CristalChem does not guarantee completeness or absolute accuracy of the information presented — users should independently verify all details before use in their own research environment. All reagents mentioned are strictly for laboratory and R&D applications only. Not for human or veterinary use!
Chemical Research Writer at CristalChem Academy. Passionate about chemistry, R&D, and turning laboratory insights into global wellness and industrial innovations.
