Description

Dowfax 2A1 is a high-performance anionic surfactant belonging to the alkylated diphenyl oxide disulfonate family. This compound is valued for its exceptional thermal and chemical stability, low surface tension, and excellent wetting properties in demanding formulations. It is a critical component for industries requiring robust surfactants that perform under extreme conditions of temperature, pH, and electrolyte concentration.

Application

• Enhanced Oil Recovery (EOR): Acts as a key surfactant in chemical flooding formulations to reduce interfacial tension and mobilize residual oil.
• Industrial & Institutional Cleaners: Used in heavy-duty alkaline and acidic cleaners, degreasers, and metal treatment baths where standard surfactants fail.
• Agricultural Formulations: Employed as a wetting and dispersing agent in pesticides, herbicides, and fungicides for improved foliar adhesion and rainfastness.
• Polymerization: Serves as an emulsifier and stabilizer in emulsion polymerization processes for synthetic rubber and latex production.
• Textile Processing: Functions as a wetting agent, dye leveler, and scouring aid in high-temperature dye baths and finishing operations.
• Paints & Coatings: Provides pigment wetting and dispersion stability in water-based architectural and industrial coatings.

Basic Information

Product Name	Dowfax 2A1
CAS No.	12626-49-2
Molecular Formula	C24H34O7S2Na2 (Disodium salt of a branched isomer)
Molecular Weight	~ 528.6 g/mol
Synonyms	Disodium hexadecyl diphenyl ether disulfonate; Alkylated diphenyl oxide disulfonate, sodium salt; Dowfax surfactant 2A1; DOWFAX 2A1; Dowfax 8390; C16-alkylated DIPHENYL oxide disulfonate; 1-Hexadecanesulfonic acid, [[(hexadecylphenyl)oxy]phenyl]-, disodium salt; Disodium 4-[(hexadecylphenyl)oxy]benzene-1,3-disulfonate
EINECS	Contact for details

Quality Control

Our Dowfax 2A1 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including active matter content, pH, and ionic character. A Certificate of Analysis (COA) documenting these results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. Under these conditions, the product has an extended shelf life.

Specification

Item	Specification
Appearance	Clear, pale yellow to amber liquid
Active Matter	Min. 45%
pH (10% solution)	7.0 - 9.0
Water Content	Balance
Specific Gravity (25°C)	~1.15
Surface Tension (0.1% solution)	< 35 dynes/cm

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