ROSULFAN D911

Rosulfan D911 is a high-performance anionic surfactant from the alkylbenzene sulfonate (LAS) family, based on sodium dodecylbenzene sulfonate, and is widely used for its strong detergency and excellent grease-removal performance.
Rosulfan D911 provides efficient emulsification and dispersion of oily and particulate soils, maintains high cleaning efficiency even in hard water, and shows good compatibility with other anionic and non-ionic surfactants.
Rosulfan D911 is extensively used in household and industrial cleaning products such as laundry detergents, dishwashing liquids, and hard-surface cleaners where reliable, cost-effective cleaning performance is required.

CAS Number: 68411-30-3
EC Number: 270-115-0
Molecular Formula: Mixture
Molecular Weight: 325–350 g/mol

Synonyms: Sodium Linear Alkylbenzene Sulfonate, Linear Alkylbenzene Sulfonate Sodium Salt, LAS, Sodium Dodecylbenzene Sulfonate, Sodium Alkylbenzene Sulfonate, Linear Dodecylbenzene Sulfonate, Sodium Salt, Anionic Alkylbenzene Sulfonate, Detergent Grade Alkylbenzene Sulfonate, Sodium C10–C13 Alkylbenzene Sulfonate, Linear Alkyl Aryl Sulfonate Sodium Salt, Sodium Linear Alkyl Aryl Sulfonate, Anionic Detergent Sulfonate, Industrial Alkylbenzene Sulfonate, Household Detergent LAS, Cleaning Grade Linear Alkylbenzene Sulfonate, Synthetic Anionic Detergent Sulfonate, Sodium Alkyl Aryl Sulfonate, Linear Alkylbenzene Sulphonic Acid Sodium Salt, High-Active LAS Surfactant, Anionic Cleaning Surfactant (LAS-based)

Rosulfan D911 is an anionic surfactant belonging to the alkylbenzene sulfonate (LAS) family, widely used for its strong detergency and excellent grease-removal performance.
Rosulfan D911 is typically supplied as a sodium dodecylbenzene sulfonate–based product, offering high surface activity and effective reduction of surface and interfacial tension.

Thanks to its robust cleaning power, Rosulfan D911 provides efficient emulsification and dispersion of oily and particulate soils, even under demanding conditions.
Rosulfan D911 shows good stability in hard water and is compatible with other anionic and nonionic surfactants, making it suitable for blended formulations.
Rosulfan D911 is mainly used in household and industrial cleaning products, such as laundry detergents, dishwashing liquids, and general-purpose cleaners, where high detergency, formulation reliability, and cost-effective performance are required.

Rosulfan D911 is a high-performance anionic surfactant belonging to the alkylbenzene sulfonate (LAS) class, specifically based on sodium dodecylbenzene sulfonate.
Rosulfan D911 is designed to deliver strong detergency and excellent removal of oily and particulate soils, making it particularly effective in demanding cleaning applications.
The linear alkylbenzene sulfonate structure provides a well-balanced hydrophilic–lipophilic character, enabling efficient reduction of surface and interfacial tension and rapid wetting of solid surfaces.

Rosulfan D911 exhibits very good solubility in water and forms clear to slightly hazy solutions depending on concentration and formulation conditions.
Rosulfan D911 maintains high cleaning efficiency even in hard water and in the presence of inorganic salts, which is a key advantage for household and industrial detergent systems.

Rosulfan D911 generates moderate to high foam with good stability, supporting both mechanical soil removal and user-perceived cleaning performance.
In addition, Rosulfan D911 acts as an effective emulsifying and dispersing agent, keeping removed soils suspended in the wash liquor and preventing redeposition.

Due to its strong anionic character, Rosulfan D911 shows good compatibility with other anionic surfactants and can be blended with non-ionic and amphoteric surfactants to tailor foam profile, mildness, and overall formulation stability.
Rosulfan D911 is widely used in laundry detergents, dishwashing liquids, hard-surface cleaners, and industrial and institutional cleaning products where high detergency, robustness across a wide pH range, and cost-effective performance are required.

Applications of Rosulfan D911:
Rosulfan D911 is primarily used in household and industrial cleaning formulations where strong detergency and effective grease removal are required.
Rosulfan D911 is commonly incorporated into laundry detergents, both powder and liquid, to enhance soil removal and prevent redeposition of dirt.

In dishwashing liquids and automatic dishwashing formulations, Rosulfan D911 provides efficient emulsification of fats and food residues.
Rosulfan D911 is also used in all-purpose cleaners, kitchen and bathroom cleaners, and hard-surface cleaning products for effective wetting and removal of oily contaminants.
In industrial and institutional cleaning systems, Rosulfan D911 serves as a key surfactant in degreasers, floor cleaners, and maintenance products, often in combination with non-ionic or amphoteric surfactants to optimize foam control, stability, and overall cleaning performance.

Rosulfan D911 is used as a foaming agent in the production of gypsum boards, extinguishing agents and in the construction industry.

Benefits of Rosulfan D911:
Rosulfan D911 offers strong detergency and excellent grease-removal performance, enabling efficient elimination of oily and particulate soils from a wide range of surfaces.
Rosulfan D911 provides effective wetting, emulsifying, and dispersing properties, helping to keep removed dirt suspended in the wash solution and preventing redeposition.

The surfactant shows good stability in hard water and in the presence of electrolytes, ensuring consistent cleaning efficiency under demanding conditions.
Rosulfan D911 is compatible with other anionic, nonionic, and amphoteric surfactants, allowing flexible formulation design and performance optimization.
In addition, Rosulfan D911 delivers cost-effective, reliable performance across a broad pH range, making it a robust choice for household, industrial, and institutional cleaning applications.

Stability and Reactivity of Rosulfan D911:

Chemical Stability:
Rosulfan D911 is chemically stable under normal ambient temperatures and recommended storage conditions.
Rosulfan D911 does not undergo hazardous polymerization and maintains its surfactant performance during routine handling and use.

Reactivity:
Rosulfan D911 is generally non-reactive under normal conditions.
However, Rosulfan D911 may react with strong oxidizing agents, strong acids, or strong bases, especially at elevated temperatures, leading to degradation of the sulfonate structure.

Conditions to Avoid:
Avoid excessive heat, direct sunlight, freezing conditions, and prolonged exposure to extreme pH environments.

Incompatible Materials:
Strong oxidizing agents, concentrated mineral acids, and strong alkalis should be avoided.

Hazardous Decomposition Products:
Under fire or severe thermal decomposition, carbon oxides and sulfur oxides may be released.

Handling and Storage of Rosulfan D911:

Safe Handling:
Handle Rosulfan D911 in well-ventilated areas using standard industrial hygiene practices.
Avoid unnecessary contact with skin and eyes and prevent inhalation of mists or aerosols.
Use appropriate personal protective equipment during handling and transfer operations.

Hygiene Measures:
Wash hands and exposed skin thoroughly after handling.
Do not eat, drink, or smoke in areas where Rosulfan D911 is used.
Remove contaminated clothing and wash before reuse.

Storage Requirements:
Store in tightly closed, clearly labeled containers made of compatible materials in a cool, dry, and well-ventilated area.

Packaging Integrity:
Keep containers sealed when not in use to prevent contamination and moisture ingress.

Shelf Stability:
Rosulfan D911 remains stable for long periods when stored under recommended conditions.

First Aid Measures of Rosulfan D911:

Inhalation:
Move the exposed person to fresh air immediately and keep at rest.
Seek medical attention if respiratory irritation, coughing, or breathing difficulties persist.

Skin Contact:
Remove contaminated clothing and wash skin thoroughly with water and mild soap.
Prolonged contact may cause irritation or dryness.
Seek medical advice if irritation continues.

Eye Contact:
Rinse eyes cautiously with clean water for several minutes while holding eyelids open.
Remove contact lenses if present and easy to do.
Seek medical attention if discomfort or redness persists.

Ingestion:
Rinse mouth with water.
Do not induce vomiting.
Seek medical advice if large quantities are swallowed or if symptoms occur.

Firefighting Measures of Rosulfan D911:

Flammability:
Rosulfan D911 is not classified as highly flammable, but combustible residues may form when exposed to fire.

Suitable Extinguishing Media:
Use water spray, foam, dry chemical, or carbon dioxide extinguishers as appropriate for surrounding materials.

Hazardous Combustion Products:
Combustion may generate sulfur oxides and carbon oxides.

Special Protective Equipment for Firefighters:
Firefighters should wear self-contained breathing apparatus and full protective clothing to avoid inhalation of hazardous fumes.

Specific Hazards:
Avoid direct exposure to smoke and decomposition gases.

Accidental Release Measures of Rosulfan D911:

Personal Precautions:
Avoid contact with skin and eyes.
Ensure adequate ventilation and wear appropriate personal protective equipment.

Environmental Precautions:
Prevent Rosulfan D911 from entering drains, surface waters, or soil in large quantities.

Cleanup Methods:
Contain spills and absorb with inert materials such as sand, earth, or vermiculite.
Collect into suitable containers for disposal according to local regulations.
Wash contaminated areas with water after removal.

Additional Advice:
Dispose of waste in accordance with applicable environmental and waste regulations.

Exposure Controls and Personal Protective Equipment of Rosulfan D911:

Engineering Controls:
Ensure adequate general and local exhaust ventilation, especially where mist or aerosol formation may occur.

Respiratory Protection:
Use suitable respiratory protection if exposure limits are exceeded or during operations generating aerosols.

Hand Protection:
Wear chemical-resistant protective gloves such as nitrile, PVC, or rubber gloves.

Eye Protection:
Use safety glasses or chemical splash goggles to prevent eye contact.

Skin and Body Protection:
Wear appropriate protective clothing to minimize skin exposure.

Environmental Exposure Controls:
Implement standard containment and waste-handling procedures to minimize environmental release.

Identifiers of Rosulfan D911:
Product Name: Rosulfan D911
Chemical Name: Sodium Linear Alkylbenzene Sulfonate
Common Name: LAS
CAS Number: 68411-30-3
EC / EINECS Number: 270-115-0
Molecular Formula: Mixture (no single defined molecular formula due to alkyl chain distribution)
Molecular Weight: Variable, typically around 325–350 g/mol (average)
Chemical Family: Anionic Surfactants – Alkylbenzene Sulfonates
Product Type: Primary Anionic Surfactant, Detergent and Cleaning Agent
Recommended Use: Household detergents, industrial and institutional cleaners, dishwashing liquids, laundry formulations

CAS Number: 84501-49-5
Function Base: Surfactant, Foaming Agent

Properties of Rosulfan D911:
Physical State: Liquid or paste, depending on active matter content
Appearance: Clear to slightly hazy, colorless to light yellow
Odor: Mild, characteristic detergent odor
Active Matter Content: Typically 90 percent (varies by grade)
pH (1 percent solution): Approximately 7.0–9.5
Density (20 °C): Approximately 1.03–1.07 g/cm³
Viscosity: Low to medium, dependent on concentration and temperature
Solubility in Water: Completely soluble; forms clear to slightly opalescent solutions
Solubility in Organic Solvents: Limited; soluble mainly in polar solvents
Surface Activity: Strong reduction of surface and interfacial tension
Foaming Properties: Moderate to high foam generation with good stability
Thermal Stability: Stable under normal processing and storage temperatures

Appearance at (20÷25)°C: clear liquid
pH of 10 % solution: 10 ÷ 11
Active substance, %(m/m): 35 ÷ 37
Klett colour, Klett value: max. 50
Unsulphated substance, %(m/m): max. 0,6
Sodium sulphate (VI), % (m/m): max. 1.5

Molecular weight: approx. 265
Solubility in water: unlimited
Other solvents: low aliphatic alcohols
Density at 25 °C, g/ml: approx. 1.06
Odour: characteristic