Xylitol Granules are pharmaceutical-grade excipient granules based on xylitol, a five-carbon sugar alcohol widely used in pharmaceutical and oral formulation development. Xylitol has the molecular formula C₅H₁₂O₅, a molecular weight of 152.15 g/mol, and CAS Number 87-99-0. USP-NF material defines Xylitol as containing 98.5% to 101.0% of C₅H₁₂O₅, calculated on the anhydrous basis.
Xylitol is a crystalline polyol that occurs as white crystals or crystalline powder and is highly water-soluble. FCC information describes xylitol as dissolving in approximately 0.65 mL of water per gram and being sparingly soluble in ethanol.
The granulated form provides xylitol in a controlled particulate format that can be evaluated for particle-size distribution, flowability, density, moisture and other physical characteristics relevant to pharmaceutical processing.
Xylitol Granules are a granulated form of pharmaceutical-grade xylitol designed for applications where a controlled granular material is preferred over a conventional crystalline powder.
Xylitol belongs to the polyol or sugar-alcohol class. Its high water solubility and crystalline characteristics make it useful in the development of oral formulations and other pharmaceutical excipient systems.
The granulation process can modify the physical characteristics of the starting material, including particle-size distribution, bulk density, flow behavior and handling properties. These characteristics should be controlled according to the actual finished-product specification.
Xylitol Granules can therefore provide formulation developers with a standardized granular excipient format for development and manufacturing applications.
Xylitol is used as an excipient in oral pharmaceutical formulations and has been investigated in tablet systems, including directly compressed formulations. Research has evaluated xylitol and other polyols as excipients for tablets and oral dosage forms.
Because excipient performance depends on both material properties and formulation design, the final functionality of Xylitol Granules should be established through product-specific development studies. USP General Chapter <1059> emphasizes that performance-related excipient properties can vary by material, supplier, batch and formulation process.
Important characteristics may include:
Xylitol is highly soluble in water, which is an important characteristic when considering its use in oral formulation systems. FCC describes xylitol as a crystalline material that is readily soluble in water and sparingly soluble in ethanol.
The solubility of xylitol can contribute to rapid dissolution of xylitol-containing formulation components when exposed to aqueous environments. However, the dissolution behavior of a finished formulation is determined by the complete formulation rather than by xylitol alone.
Particle size, granule structure, compression conditions, other excipients and manufacturing processes can influence the final performance.
Particle-size distribution is an important physical characteristic for Xylitol Granules. Controlled granule size can contribute to consistent material handling, blending and processing.
D10, D50 and D90 may be used to describe the particle-size distribution when these parameters are included in the approved specification. Granule size can also affect packing, density and flow.
The appropriate particle-size range should be established according to the intended application and actual manufacturing specification. A universal D10, D50 or D90 value should not be assigned without product-specific analytical data.
Granulated materials are often evaluated for flow characteristics because consistent movement of excipients through manufacturing equipment can support reproducible processing.
Xylitol Granules may be evaluated using:
These parameters can provide information about powder and granule handling. Their acceptance criteria should be based on the actual product specification.
Research on excipients for direct compression demonstrates that material properties such as particle size, flow and compactability can strongly influence processing performance.
Xylitol has been investigated in tablet formulations and oral dosage systems. Research has examined xylitol in directly compressed tablet formulations and in orally disintegrating tablet systems.
Xylitol-containing formulations can be evaluated for:
These performance characteristics are formulation-dependent and should not be presented as universal specifications for Xylitol Granules.
Xylitol has been studied as part of directly compressed formulation systems. Research on direct-compression polyols has specifically evaluated DC forms of xylitol alongside other polyols, examining their compaction and tablet properties.
Separate research has also investigated engineered xylitol crystals and demonstrated that particle engineering can influence the hardness and dissolution behavior of directly compressed tablets.
These findings illustrate why physical properties of the finished granular material should be characterized rather than relying solely on chemical identity.
Xylitol has also been investigated as a component of orally disintegrating and rapidly disintegrating tablet formulations. Research has evaluated xylitol-containing systems and their relationship with tablet hardness and oral disintegration behavior.
The high water solubility of xylitol can be relevant to the development of oral formulations, although the final disintegration and dissolution performance depends on the complete formulation composition and manufacturing process.
Xylitol Granules may therefore be considered during formulation development where a water-soluble polyol excipient in granular form is required.
Moisture control can be important for crystalline polyol excipients because water content can affect handling, flow and processing characteristics.
For Xylitol Granules, moisture content should be controlled according to the approved product specification and supported by stability data. A universal moisture limit should not be assigned without the actual finished-product specification.
Packaging should provide suitable protection against environmental conditions that could affect the physical properties of the granules during storage and transportation.
Quality control of Xylitol Granules should cover both chemical identity and physical characteristics.
The chemical identity of xylitol can be established through the applicable pharmacopoeial identification procedures. USP-NF material specifies xylitol content of 98.5–101.0% on the anhydrous basis.
Finished-granule quality may additionally be evaluated using:
The exact acceptance criteria should be based on the approved finished-product specification and analytical method.
Xylitol Granules can be evaluated in pharmaceutical formulation development where a water-soluble polyol excipient in a granular format is desired.
Development studies may assess:
The concentration and processing conditions should be established according to the intended formulation and validated manufacturing process.
Xylitol Granules may be considered for:
The specific function and concentration should be established through formulation development and product-specific performance testing.
| Parameter | Specification |
|---|---|
| Appearance | White to off-white granules |