Description

Sodium Dodecyl Diphenyl Ether Disulfonate is a high-performance anionic surfactant belonging to the alkyl diphenyl ether disulfonate family. This compound is valued for its excellent wetting, emulsifying, and dispersing properties, even in challenging conditions of high electrolyte concentration, low pH, and elevated temperatures. It is a critical raw material for formulators in the industrial cleaning, agrochemical, textile, and oilfield chemical sectors who require robust and reliable surfactant performance.

Application

• Industrial & Institutional (I&I) Cleaners: A key component in heavy-duty alkaline and acidic cleaners, degreasers, and floor care products due to its stability and hard surface wetting.
• Agrochemical Formulations: Used as a dispersant and wetting agent in suspension concentrates (SC), wettable powders (WP), and other pesticide formulations to enhance stability and efficacy.
• Textile Processing: Employed in scouring, dyeing, and finishing baths as a penetrant and leveling agent, particularly effective in high-salt dye systems.
• Enhanced Oil Recovery (EOR): Acts as a surfactant in chemical flooding formulations to reduce interfacial tension and mobilize residual oil.
• Paint & Coating Additives: Functions as a pigment dispersant and grinding aid in water-based systems to prevent settling and improve color development.
• Personal Care & Cosmetics: Used in specialized cleansing products where high electrolyte tolerance is required.
• Metal Treatment & Plating: Serves as a wetting agent in acid pickling baths and electroplating solutions.
• Polymerization Emulsifier: Utilized in emulsion polymerization processes, such as for styrene-butadiene rubber (SBR) and acrylics.

Basic Information

Product Name	Sodium Dodecyl Diphenyl Ether Disulfonate
CAS No.	40795-56-0
Molecular Formula	C30H46Na2O7S2
Molecular Weight	636.8 g/mol
Synonyms	Dodecyl diphenyl ether disulfonic acid, sodium salt; Sodium dodecyl diphenyloxide disulfonate; SDDODS; Alkyl diphenyl ether disulfonate; Dowfax 2A1 (trade name component); Anionic surfactant 2A1; Disulfonated alkyl diphenyl oxide; 4-[2-[4-(Dodecyloxy)phenyl]ethenyl]benzene-1,3-disulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Sodium Dodecyl Diphenyl Ether Disulfonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance and meets specifications for critical parameters such as active matter content, inorganic salt, and pH. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee traceability and compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect flow properties and active content.

Specification

Item	Specification
Appearance	Light yellow to amber viscous liquid or paste
Active Matter (as disulfonate)	≥ 40%
pH (1% aqueous solution)	7.0 - 9.0
Inorganic Salt (as Na2SO4)	≤ 3.0%
Water Content	Balance
Identification (IR)	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.