Description

Dowfax 3B2 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 foam profile, and powerful wetting and emulsifying properties in demanding formulations. It serves as a critical component for industrial manufacturers requiring robust performance under extreme conditions, such as in high-temperature and high-electrolyte environments. Key sectors that utilize this specialty surfactant include polymer emulsion, agrochemical, textile, and oilfield chemical production.

Application

• Polymerization Aid: Acts as a primary or secondary emulsifier and stabilizer in emulsion polymerization processes for styrene-butadiene rubber (SBR), acrylics, and PVC.
• Agrochemical Formulations: Provides superior wetting and dispersion in concentrated suspension (SC) and emulsion (EW) crop protection products.
• Industrial & Institutional Cleaners: Used in low-foam, high-alkaline, or acid cleaner formulations for metal treatment and hard surface cleaning.
• Textile Processing: Functions as a wetting agent and dye leveler in high-temperature dye baths and bleaching operations.
• Oilfield Chemicals: Employed in drilling muds, stimulation fluids, and enhanced oil recovery (EOR) formulations due to its stability in brines.
• Paper & Pulp Industry: Serves as a dispersant and deinking agent in paper recycling and pulp processing.

Basic Information

Product Name	Dowfax 3B2
CAS No.	58318-10-8
Molecular Formula	C24H34O7S2Na2
Molecular Weight	544.6 g/mol
Synonyms	Dodecyl diphenyl oxide disulfonic acid, disodium salt; Alkylated diphenyl oxide disulfonate; Disodium dodecyldiphenyl ether disulfonate; Dowfax 3B2 surfactant; DOWFAX 3B2; Dodecyldiphenyloxide disulfonic acid disodium salt; 1,1'-(Dodecyloxy-3,6,9-trioxaundecane-1,11-diyl)bis(4-sulfobenzene), disodium salt
EINECS	Contact for details

Quality Control

Our Dowfax 3B2 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against critical parameters including active matter content, pH, and ionic character. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and physical specifications 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 recommended storage conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Clear, amber liquid
Active Matter	≥ 45 %
pH (10% solution)	7.0 - 9.0
Water Content	≤ 55 %
Specific Gravity (25°C)	1.15 - 1.20
Viscosity (25°C)	Contact for details

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