Name: China Factory Supply High Quality Xanthan Gum CAS 11138-66-2 with best price
Brand: Wuhan Fortuna Chemical Co., Ltd.

Specifications of Xanthan Gum CAS 11138-66-2

Items	Specifications	Results
Appearance	Off-white to light beige powder	Light yellow powder
Viscosity(1% xanthan gum in 1%KCL aqueous solution)	1200-1800cps	1530
Shear performance value	≥6.5	8
Identification	A.Infrared absorption:The IR spectrum of sample,exhibits maxima only at the same wavelength as that a similar preparation of USP Clotrimazole RS.	Complies
Identification	B.HPLC:The retention time of the major peak of the sample solution Corresponds to that of the standard solution,as obtained in the assay.	Complies
Loss on Drying	≤15%	8.72
Granularity	100% passed through 60-mesh sieve; At least 95% pass through an 80-mesh sieve	Complies
Ash content	≤16%	7.1
Lead	≤2ppm	＜2ppm
Total Nitrogen	≤1.5%	0.75
Pyruvic Acid	≥1.5%	4.6
Total Plate Count	≤5000 cfu/g	Complies
Mold and Yeast	≤500 cfu/g	Complies
E.Coli	≤3 MPN/g	Not Detected
Salmonella	Not Detected/25g	Not Detected
Conclusion	The product conforms to the above specifications.

Parameters of Xanthan Gum CAS 11138-66-2

Product parameters
Cas number:	11138-66-2
Appearance:	Yellow or off-white powder
Purity:	N/A
Package details:	25kg/drum
Brand:	Fortunachem

Xanthan gum is a high-molecular-weight exopolysaccharide (a complex sugar polymer secreted by microorganisms). It is produced industrially through the fermentation of glucose or sucrose by the bacterium Xanthomonas campestris. Its unique structure, consisting of a cellulose backbone with trisaccharide side chains, gives it exceptional functional properties in aqueous systems.

Key Chemical & Physical Properties

Solubility: Soluble in both hot and cold water. It does not dissolve in most organic solvents.
Rheology Modifier: Its primary function is to dramatically increase the viscosity of water even at low concentrations (e.g., 1% can form a thick solution).
Pseudoplasticity (Shear-Thinning): Xanthan gum solutions are non-Newtonian. They are thick at rest but become thin and flow easily under shear stress (shaking, stirring, pumping). This property is reversible.
Stability: Highly stable over a wide range of pH (3–12) and temperatures (resists thermal degradation). It is also resistant to enzymatic breakdown (except by specific xanthanases).
Synergistic Interactions: Works well with other hydrocolloids like guar gum and locust bean gum, often forming stronger gels or enhanced viscosities.
Suspension & Emulsion Stabilizer: Its viscous, pseudoplastic nature effectively suspends solid particles and stabilizes oil-in-water emulsions by preventing settling and coalescence.

Uses in Chemical & Industrial Applications

While famous as a food additive (E415), xanthan gum is a versatile, water-soluble polymer with significant non-food industrial uses, often valued as a rheology control agent, stabilizer, and suspending agent.

1. Oil & Gas Industry (Major Consumer)

Drilling Fluids ("Mud"): Used in water-based drilling muds to:

Carry rock cuttings to the surface (suspension property).
Lubricate and cool the drill bit.
Control fluid loss into formations, thanks to its excellent viscosity under low shear.

Enhanced Oil Recovery (EOR): Thickens the water injected into reservoirs to improve "sweep efficiency" and displace more crude oil.

2. Agrochemicals

Suspension Concentrates (SC): Prevents the settling of solid pesticide particles in tank mixes and commercial formulations, ensuring uniform application.
Adjuvants: Added to herbicide or pesticide sprays to increase droplet viscosity, reduce drift, and improve adhesion to plant foliage.

3. Paints, Coatings, and Adhesives

Rheology Modifier: Provides desired thixotropy (shear-thinning) for:

Paints/Inks: Prevents sagging on vertical surfaces, yet allows easy brushing or spraying. Also suspends pigments.
Adhesives/Glues: Controls spreadability and penetration.

4. Construction & Building Materials

Cement & Grout Additive: Improves workability, water retention, and reduces segregation/settling of particles.
Tile Adhesives & Joint Compounds: Enhances application properties and sag resistance.

5. Ceramics

Used in ceramic slips and glazes to control rheology, ensuring uniform coating and preventing settling of solid particles.

6. Textile & Paper Printing

Thickens dye pastes and printing inks to achieve sharp print definition and prevent bleeding.

7. Cosmetics & Toiletries

Acts as a thickener, stabilizer, and suspending agent in:

Lotions, creams, and shampoos (stabilizes emulsions).
Toothpastes (provides gel structure and suspension of abrasives).

8. Pharmaceuticals

Used as a suspending agent in liquid drug formulations (e.g., antibiotic syrups) and as a stabilizer in emulsions.

9. Laboratory & Analytical Chemistry

Gel Electrophoresis: Sometimes used as a matrix for separating large DNA molecules.
Rheology Standard: Used as a reference material for studying the flow properties of complex fluids.

Comparison to Other Chemical Thickeners

Property	Xanthan Gum	Guar Gum	Carboxymethyl Cellulose (CMC)	Polyacrylamide (PAM)
Solubility	Cold/Hot Water	Cold Water	Cold/Hot Water	Cold Water
Shear-Thinning	Excellent	Moderate	Good	Varies
Salt Tolerance	Excellent	Poor	Moderate	High
Suspension Power	Excellent	Good	Good	Good
Primary Cost Driver	Fermentation	Agricultural Seed	Chemical Modification	Petrochemical

Summary

Xanthan gum is a microbial polysaccharide that acts as a powerful, multifunctional rheology modifier in aqueous systems. Its most valuable chemical properties are high low-shear viscosity, strong shear-thinning behavior, and exceptional stability under harsh conditions (pH, temperature, salt). Beyond its well-known food applications, it is a critical additive in oil drilling fluids, agrochemical suspensions, paints, construction materials, and ceramics, where precise control of flow, stability, and suspension is required. Its biodegradability and non-toxic nature further expand its utility in environmentally sensitive applications.