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Organic Acids

Dodecylbenzenesulfonic acid

CAS: 27176-87-0

Overview

Dodecylbenzenesulfonic acid (CAS 27176-87-0 ), commonly known as DDBSA or laurylbenzenesulfonic acid, is a high-performance anionic surfactant and acid catalyst used across cleaning, agricultural, and industrial processing applications.

It functions primarily as a surfactant precursor, emulsifier, and pH-active ingredient in formulated products. In household and industrial cleaning formulations, it is neutralized on-site to produce linear alkylbenzene sulfonate.

This derivative serves as the active detergent component in liquid dish soaps, hard surface cleaners, and degreasers. Agricultural formulations use it as an emulsifier and dispersant in pesticide and herbicide concentrates.

These applications improve active ingredient delivery and tank-mix stability. Textile and leather processors apply it as a wetting and penetration agent during dyeing, tanning, and finishing operations.

In industrial contexts, it also acts as an acid catalyst in alkylation and esterification processes. The product is supplied as a viscous liquid, typically at 96–97% active content for industrial use.

Technical grade is the predominant market form, with hard and soft acid variants available depending on the linear or branched alkyl chain composition. Drum and IBC packaging are standard for most orders.

Bulk tanker supply is also available for high-volume buyers requiring consistent delivery. This chemical remains a foundational component for manufacturers seeking reliable performance in surfactant synthesis.

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Physical Properties

Melting Point10 °C
Boiling Point286 °C @ Press: 760 Torr
Density1 g/cm³ @ Temp: 25 °C
Flash Point85 °F
Appearancebrown or tan solid
ColorColorless to light yellow
FormColourless Solution
Water Solubility100mg/L at 25℃
Vapor Pressure0Pa at 25℃
Refractive Indexn 20/D 1.51
Log P4.78 at 25℃

Trade & Regulatory

HS Code34021100
UN Number2924
ADR Class3
Packing GroupIII
Storage Class3 - Flammable liquids
WGK (Germany)2

Other Names

o-dodecylbenzenesulfonic acid | laurylbenzenesulfonic acid | dodecylbenzenesulphonic acid | 2-Dodecylbenzenesulfonic acid | Benzenesulfonic aciddodecyl- | n-Dodecylbenzenesulfonic acid | E 7256 | Dodecyl Benzene Sulfonic Acid (DDBSA) | DDBSA

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Chemical Properties

CAS Number
27176-87-0
EC Number
248-289-4
Mol. Weight
-
HS Code
34021100

Industries

Documentation