Overview
Pharmaceutical-grade dextrin is a polysaccharide derived from starch hydrolysis, extensively used as an excipient in drug manufacturing. It serves as a binder, filler, and disintegrant in solid dosage forms like tablets and capsules. As a modified carbohydrate, dextrin meets strict pharmacopeial standards for purity and performance. Its controlled molecular weight distribution ensures consistent functionality in formulations, making it a reliable choice for pharmaceutical applications.
Physical and Chemical Properties
Dextrin appears as a fine, odorless powder with varying degrees of solubility depending on its dextrose equivalent (DE) value. Pharmaceutical grades typically have DE values between 2-20, balancing solubility with binding properties. The material exhibits excellent thermal stability below 150°C and undergoes caramelization at higher temperatures. Its viscosity in solution can be adjusted by controlling the degree of starch hydrolysis during production, allowing customization for specific formulation needs.
Main Applications
In tablet manufacturing, dextrin acts as both a binder during granulation and a disintegrant upon ingestion. Its adhesive properties help maintain tablet integrity while allowing controlled drug release. For capsule formulations, dextrin serves as a flow agent and bulking agent. It's also used in topical preparations as a viscosity modifier and in some sustained-release systems where its gradual solubility provides controlled drug delivery.
Safety and Storage
Pharmaceutical dextrin requires storage in moisture-proof containers at ambient temperature (15-25°C). Prolonged exposure to humidity may cause caking or microbial growth. While generally non-irritating, dust inhalation should be prevented through proper handling procedures. The material complies with ICH stability guidelines and shows excellent compatibility with most active pharmaceutical ingredients.
B2B Procurement Guide
When sourcing pharmaceutical dextrin, prioritize suppliers with cGMP certification and batch-to-batch consistency guarantees. Request certificates of analysis for each shipment showing compliance with relevant pharmacopeias (USP/EP). Consider ordering pre-tested material matching your formulation's specific viscosity and solubility requirements. For large-volume procurement, negotiate based on purity specifications rather than just price, as substandard material may affect product performance.
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