© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Sodium Dextran Sulfate comes from dextran, a polysaccharide built mainly of alpha-1,6 glycosidic bonds. Chemists modify this backbone by attaching sulfate groups, which provide new properties and applications. In its pure form, Sodium Dextran Sulfate carries the characteristics of a solid powder, often appearing as white or off-white flakes, pearls, or even crystals. Sometimes, it is supplied in a liquid or concentrated solution to suit various industrial and research tasks. The molecular formula often lands at (C6H7Na3O14S3)n, with the n value reflecting polymer chain length. Density depends on how it is processed, but a typical bulk density for the powdered form might hover around 0.7 g/cm³. As for the HS Code, Sodium Dextran Sulfate commonly falls under 3913.90, classifying it with other natural polymers.
Dextran forms the foundation of this compound, and the addition of sulfate esters transforms both the chemical behavior and material properties. The large, branched polymer structure gives it water solubility, which matters in many lab and industrial processes. The sulfate content affects viscosity and the way the material interacts with ions or proteins. Varieties come as flakes, powders, pearls, or liquids. These different forms reflect the range of possible water contents and degrees of sulfation. Typically, higher sulfate content delivers increased negative charge per molecule, which directly influences the ability to bind to proteins or cell surfaces. Some grades arrive as glassy solids, others as crystalline powders finely milled for ease of dissolution.
Each molecule of Sodium Dextran Sulfate builds on a dextran backbone, holding repeating glucose units. Sulfate substitutions at various positions shift its reactivity, solubility, and biological activity. Researchers rely on specific degrees of sulfation, expressed as a percentage by weight. The molecular weight distribution stretches from about 5,000 to over 500,000 Daltons, depending on application. For pharmaceutical and research use, the specification sheet details purity, moisture content, sodium and sulfur percentages, and the degree of polymerization. Each feature affects how the compound behaves in chemical and biological systems. Batch consistency directly impacts experimental or manufacturing quality, so suppliers list these numbers in detail.
Material supply matches a wide range of needs. You might see Sodium Dextran Sulfate in dry flakes for bulk transport, in powder for easy measurement, or as pearls and granules for controlled dusting and handling. Preserved solutions, made up at a standard concentration such as 10%, enable quick and reliable dilution in laboratory or industrial settings. Crystalline forms attract researchers who need highest purity, often in applications where contamination or imprecision cause trouble. Each form relates to convenience, storage, purity, and safety needs. Flakes stack easily and resist clumping, powder dissolves rapidly, and liquids go straight into process streams. In the lab, tiny granules simplify weighing and minimize loss.
Bulk density marks a critical physical property, not only for transport but for accurate weighing and mixing. For instance, with a fine powder, compaction during storage can change the true volume per gram, so users watch for clumping or moisture uptake. Dissolving Sodium Dextran Sulfate in water, solubility outcomes depend both on temperature and degree of sulfation. Researchers and operators keep this material in moisture-tight containers, often at room temperature or lower, to maintain purity and prevent accidental hydrolysis. In liquid solutions, preservatives might be necessary to stave off microbial growth. Crystal or highly pure forms store better in low-humidity conditions and away from direct sunlight.
Sodium Dextran Sulfate does not go unlabeled. Regulatory agencies consider it an irritant, particularly to eyes, skin, and respiratory tract. High dust environments demand protective gear—gloves, goggles, dust masks—because inhalation or exposure causes discomfort or even chemical burns in rare cases. Spillage turns slippery, so cleanup requires care and attention. Long-term or high-dose exposure, especially in animal testing, has demonstrated organ effects, so disposal and handling follow local chemical waste regulations. Material Safety Data Sheets describe reactivity with acids, heat, and oxidizers, highlighting that the combination of organic backbone and inorganic sulfate presents both fire and reactivity issues under extreme conditions. On the positive side, the sodium salt mitigates explosive dust risks found with unneutralized polysaccharide sulfates.
Raw materials start with pharmaceutical-grade dextran, produced by controlled fermentation and careful purification. Sulfation demands reagents such as chlorosulfonic acid or sulfur trioxide compounds, and the sodium neutralization step rounds out the manufacturing cycle. Every production run undergoes rigorous quality controls to ensure contaminants such as heavy metals, residual solvents, and pyrogens stay well below regulatory thresholds. Production operates under strict Good Manufacturing Practices to avoid batch-to-batch variability. In commercial settings, suppliers maintain records to satisfy audits and traceability standards. Finished raw material must always match published specification, including appearance, solubility, sulfate group content, and absence of unwanted ions or trace elements.
Users face real questions about sourcing Sodium Dextran Sulfate. Consistent quality matters, especially in sensitive research or medical applications. For a reliable outcome, buyers work with suppliers certified to ISO or cGMP standards. Logistics teams keep an eye on proper labeling, temperature control, and hazardous shipping protocols, particularly for large or high-purity batches. To improve safety, industry moves toward closed systems and automated dispensing to reduce dust, spills, and accidental mixing. Environmental stewardship prompts laboratories and plants to reclaim or safely neutralize excess materials, instead of treating them as normal waste. Both regulatory and internal audits press for continual documentation, risk reviews, and training enhancements.
Each property—molecular structure, density, chemical reactivity—translates into performance differences in real-world contexts. High-sulfate formulations, for example, appear in clinical diagnostics as anticoagulant additives. Lower sulfation products might show up in membrane science or microencapsulation. Physicochemical characterization—such as refractive index, molecular weight distribution, and solution viscosity—anchors the understanding of when and how to apply this raw material. Practical experience shows that even slight batch variation can upset biological assays or manufacturing yields. So, control over moisture levels, particle size, and purity stands at the front line of reliable practice in technical fields.
