Sorbitol Granules are pharmaceutical excipient granules based on d-sorbitol, a polyhydric alcohol widely used in pharmaceutical and oral formulation applications. Sorbitol is also known as d-glucitol and has the molecular formula C₆H₁₄O₆ with a molecular weight of 182.17. The CAS number of d-sorbitol is 50-70-4. According to the current USP-NF monograph, Sorbitol contains not less than 91.0% and not more than 100.5% d-sorbitol, calculated on the anhydrous basis.
The granulated form of sorbitol provides a defined physical format for pharmaceutical formulation and processing applications. Sorbitol is available in different physical forms, and FCC describes it as occurring as a white powder, granules, or crystalline masses. It is very soluble in water and is hygroscopic.
Sorbitol Granules are granulated pharmaceutical excipient materials containing d-sorbitol as the principal component. Converting sorbitol into a controlled granule form can provide physical characteristics suitable for handling, blending, filling, and formulation development.
Granulation can influence properties such as particle-size distribution, bulk density, flowability, dust generation, packing behavior, and moisture interaction. These characteristics are particularly relevant when sorbitol is incorporated into oral solid formulations or other pharmaceutical manufacturing processes.
The exact physical characteristics of Sorbitol Granules depend on the manufacturing process and finished-product specification. Therefore, parameters such as particle size, bulk density, tapped density, flowability, and moisture should be stated only when supported by the applicable product specification or Certificate of Analysis.
Sorbitol is a polyhydric alcohol used as a pharmaceutical excipient. Its high water solubility and physical properties make it useful in a range of formulation applications.
Current USP-NF identifies Sorbitol as d-glucitol and specifies a content range of 91.0–100.5% d-sorbitol calculated on an anhydrous basis. The monograph also notes that sorbitol may contain other sugars, polyhydric alcohols, and hexitol anhydrides.
The finished granule format can be selected when a formulation requires a more controlled physical form than a conventional powder. The granulation process may improve material handling and support consistent downstream processing.
Sorbitol is a highly water-soluble polyol. FCC describes sorbitol as very soluble in water, slightly soluble in ethanol, methanol, and acetic acid, and insoluble in ether. It is also described as hygroscopic.
These properties are important when developing Sorbitol Granules because moisture exposure can affect the physical characteristics of the material. Appropriate packaging, storage conditions, and moisture control should therefore be considered during pharmaceutical manufacturing and storage.
Particle-size distribution is an important quality attribute for granulated excipients. The particle size of Sorbitol Granules can influence flowability, packing, segregation, blending, filling, and downstream processing.
Depending on the approved product specification, important physical characteristics may include:
These parameters are product-specific and should be established according to the actual manufacturing specification rather than assigned as universal values.
Sorbitol can be evaluated as an excipient in pharmaceutical formulation development where its physical and physicochemical properties are suitable for the intended formulation.
The granulated form can be useful for applications requiring controlled particle characteristics and improved material handling. Depending on the formulation design, Sorbitol Granules may be incorporated into tablets, capsules, oral solid formulations, granulated excipient blends, and other pharmaceutical preparations.
The appropriate grade and physical form should be selected based on the formulation requirements, manufacturing process, compatibility with other ingredients, and required quality attributes.
One of the important characteristics of sorbitol is its high water solubility. FCC describes sorbitol as very soluble in water.
This characteristic can be relevant during formulation development, particularly when rapid hydration or dissolution of the excipient is desirable. However, the dissolution behavior of a finished granule is influenced not only by the intrinsic solubility of sorbitol but also by granule size, granule structure, binders, processing conditions, coating, compression, and other formulation components.
Therefore, specific dissolution or disintegration claims should be supported by finished-product testing.
Sorbitol is hygroscopic, making moisture management an important consideration for Sorbitol Granules. Exposure to atmospheric moisture can affect the physical condition of hygroscopic materials and may influence flowability, agglomeration, granule strength, and storage stability.
Appropriate moisture specifications should be established for the actual finished product. A universal water-content value should not be assigned to Sorbitol Granules unless supported by the relevant product specification.
Packaging and storage conditions should also be selected according to the validated stability requirements of the finished material.
The physical characteristics of Sorbitol Granules depend on the selected granulation technology and process conditions. Processing parameters can influence particle size, density, strength, moisture, flow, and final granule uniformity.
Important manufacturing considerations can include:
Process optimization can help produce consistent granules suitable for pharmaceutical manufacturing.
Quality control of Sorbitol Granules should combine compendial requirements for sorbitol with additional physical specifications applicable to the finished granulated product.
Current USP-NF defines Sorbitol based on d-sorbitol content on an anhydrous basis.
Finished-product quality evaluation may include:
The exact acceptance criteria should be taken from the approved specification and applicable compendial standard.
Sorbitol Granules can be considered for a variety of pharmaceutical excipient applications, depending on the grade and physical properties.
Potential applications include:
The actual suitability of Sorbitol Granules depends on the formulation composition, manufacturing process, grade, and required finished-product performance.
The granulated form can provide practical processing advantages compared with fine powder materials. Controlled granule characteristics can support easier handling, improved flow, reduced dust generation, and more consistent feeding or blending.
Depending on the product design, granulation may also provide more predictable particle-size characteristics and packing behavior.
These benefits are dependent on the actual granulation process and should be confirmed through product-specific testing.
Sorbitol Granules are pharmaceutical excipient granules based on d-sorbitol and are available in a controlled granulated form for pharmaceutical formulation and manufacturing applications.
The current USP-NF Sorbitol monograph identifies d-sorbitol with the formula C₆H₁₄O₆, molecular weight 182.17, and CAS number 50-70-4, with a defined d-sorbitol content requirement on an anhydrous basis.
For pharmaceutical manufacturers and formulation developers, consistent particle characteristics, moisture control, flow properties, and compendial quality are important considerations when selecting Sorbitol Granules.
Sorbitol Granules can therefore provide a practical pharmaceutical excipient format for formulations requiring a water-soluble polyhydric alcohol in a controlled granulated form.
| Parameter | Specification |
|---|---|
| Appearance | White to off-white granules |
| Identification | IR & HPLC compliant |
| Assay (HPLC) | 98.0% – 102.0% |
| Loss on Drying | NMT 0.5% |
| Residue on Ignition | NMT 0.1% |
| Individual Impurity | NMT 0.5% |