Description

Disodium Dodecyl 4-Sulphonatophthalate is a specialized anionic surfactant and dye intermediate derived from phthalic acid. This compound matters for its unique dual functionality, acting as both a surfactant and a colorant precursor, which provides enhanced performance in complex formulations. It is primarily needed by manufacturers in the dye and pigment, textile processing, and specialty surfactant industries for creating high-value, functional products.

Application

• Primary intermediate in the synthesis of high-performance, water-soluble dyes and pigments.
• Surfactant and dispersing agent in textile dyeing and printing processes.
• Key component in the formulation of specialty inks and toners.
• Additive in detergent and cleaning formulations requiring specific color or complexing properties.
• Processing aid and emulsifier in polymer and resin production.
• Functional additive in paper coating and leather treatment chemicals.

Basic Information

Item	Detail
Product Name	Disodium Dodecyl 4-Sulphonatophthalate
CAS No.	68189-35-5
Molecular Formula	C22H30Na2O7S
Molecular Weight	484.51 g/mol
Synonyms	Disodium 4-(Dodecyloxy)-4-oxo-3-sulfonatobenzoate; 4-Sulfophthalic Acid Dodecyl Ester Disodium Salt; Dodecyl 4-Sulfophthalate Disodium Salt; LAS Intermediate; Linear Alkylbenzene Sulfonate Derivative; Phthalic Acid, 4-Sulfo-, Dodecyl Ester, Disodium Salt; C12 Phthalate Sulfonate
EINECS	Contact for details

Quality Control

Our Disodium Dodecyl 4-Sulphonatophthalate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, identification, and impurity profile analysis, to ensure it meets precise customer and industry specifications. Certificates of Analysis (COA) documenting purity, physical properties, and conformance are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Sulfonate Content (Titration)	Contact for details
pH (10% solution)	6.0 - 8.5
Heavy Metals (as Pb)	≤ 20 ppm

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