Overview
High viscosity cellulose is a chemically modified cellulose derivative, typically produced through etherification or esterification processes. It is valued for its ability to form high-viscosity solutions even at low concentrations, making it indispensable in industries requiring thickening or stabilizing agents. As a non-toxic and biodegradable polymer, it meets environmental and safety regulations across multiple applications. Its versatility stems from adjustable viscosity grades, allowing customization for specific industrial needs.
Physical and Chemical Properties
High viscosity cellulose is characterized by its high molecular weight and hygroscopic nature. It dissolves in water to form clear, viscous solutions with pseudoplastic behavior—viscosity decreases under shear stress, aiding in processing. Chemically, it exhibits stability across a wide pH range (3–11) and resists enzymatic degradation. Its thermal stability is limited, with decomposition occurring around 200°C. The powder is non-ionic and compatible with many salts and surfactants, enhancing formulation flexibility.
Main Applications
In the food industry, high viscosity cellulose acts as a thickener in sauces, dressings, and dairy products, improving texture without altering flavor. It is also used in gluten-free baking to mimic dough elasticity. Pharmaceuticals leverage its binding and controlled-release properties in tablet formulations. In construction, it serves as a water-retention agent in cement-based materials, preventing premature drying. Personal care products like shampoos and lotions utilize its emulsifying and film-forming capabilities.
Safety and Storage
High viscosity cellulose is classified as GRAS by the FDA for food use. Occupational exposure to airborne powder should be minimized to prevent respiratory irritation; PPE such as masks is recommended during handling. Storage requires protection from humidity to prevent clumping. Sealed containers in dry, ventilated areas are ideal. Shelf life typically exceeds two years under proper conditions, though viscosity may degrade over time if exposed to moisture.
B2B Procurement Guide
Buyers should specify viscosity range (e.g., 1% solution at 20°C) and purity requirements (e.g., ≥95%). Certificates of analysis (CoA) confirming heavy metal content and microbial limits are critical for food and pharmaceutical grades. Bulk purchases (tonnage) often attract discounts, but sample testing is advised to ensure consistency. Supplier audits can verify compliance with ISO or GMP standards. Spot prices fluctuate with cellulose raw material costs, so long-term contracts may offer stability.
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