Guma ksantanowa w proszku - 1000g

Xanthan Gum (Pure Powder)
Other Names: Polysaccharide B 1459
Chemical Class: High molecular weight extracellular polysaccharide
CAS Number: 11138-66-2
Chemical Formula: (C₃₅H₄₉O₂₉)n
Appearance: White to light cream-colored free-flowing powder
Odor: Odorless or slight characteristic odor
Solubility: Soluble in cold and hot water, forms viscous colloidal solution
Purity: ≥99% (dry basis)

Xanthan gum is a high-molecular-weight anionic polysaccharide produced by the fermentation of carbohydrates with Xanthomonas campestris. It is used in non-food industrial applications for its viscosity-modifying, rheology-controlling, and stabilizing properties.

Physical and Chemical Properties

• Molecular Weight: ~2 × 10⁶ Da (varies by batch)

• Density (bulk): ~0.5–0.8 g/cm³

• pH (1% solution): 6.0–8.0

• Viscosity (1% in water at 25 °C): ≥1200 mPa·s

• Thermal Stability: Stable up to ~70–80°C in solution

• Shear-Thinning: Exhibits pseudoplastic (non-Newtonian) flow behavior

Applications

Industrial Fluids

• Thickener and stabilizer in drilling muds, hydraulic fracturing fluids, and mining slurries.

Cosmetics and Personal Care

• Rheology modifier in creams, gels, suspensions, and emulsions.

Paints, Coatings, and Adhesives

• Viscosity control additive for improved stability and flow properties.

Paper and Textile Processing

• Used for surface sizing, coating, and fiber suspension stabilization.

Laboratory Use

• Matrix-forming agent in gel systems, microencapsulation, and controlled release studies.

Safety

Signal Word: ⚠️ Warning

Hazard Statements:

• H335: May cause respiratory irritation (dust inhalation)

Precautionary Statements:

• P261: Avoid breathing dust

• P271: Use only in well-ventilated area

• P280: Wear respiratory protection, gloves, and eye protection when handling large quantities

• P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing

• P501: Dispose of contents/container in accordance with local regulations

Handling and Storage

• Handling: Avoid creating dust. Use appropriate PPE in bulk handling.

• Storage: Store in a dry, cool, and well-ventilated place. Keep tightly sealed to prevent moisture absorption.

• Shelf Life: Stable for several years in sealed containers under dry conditions.

Environmental Considerations

Biodegradable. Avoid uncontrolled release of powdered form into air or water systems due to dusting and potential water thickening effects.