Dodecylbenzenesulfonic acid

Name: Dodecylbenzenesulfonic acid
SKU: 0

CAS No.: 27176-87-0
Molecular Formula: C18H30O3S
Molecular Weight: 348.47583

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product description

Dodecylbenzenesulfonic acid is an important anionic surfactant. It typically appears as a viscous brown liquid, characterized by strong acidity as well as excellent detergency and foaming properties. Due to the presence of a long-chain alkyl group and a hydrophilic sulfonic acid group in its molecular structure, it can significantly reduce the surface tension of water and exhibits excellent emulsifying and wetting capabilities.

Chemical Properties

Property	Value
Melting point	10°C
Boiling point	82 °C
Density	1.06 g/mL at 20 °C (lit.)
Vapor pressure	0 Pa at 25°C
Refractive index	n20/D 1.51
Flash point	85 °F
Storage condition	2-8°C
Solubility	Soluble in water, alcohol, glycol ethers, glycol, ketones, aromatics and aliphatic hydrocarbons
Acidity coefficient (pKa)	0.7 [at 20 °C]
Form	Colorless solution
Color	Colorless to light yellow
Water solubility	100 mg/L at 25°C
Stability	Stable. Hygroscopic. Incompatible with bases, oxidizing agents, metals.
Cosmetic ingredient function	SURFACTANT - CLEANSING CLEANSING
InChI	1S/C18H30O3S/ c1-2-3-4-5-6-7-8-9-10-11-12-17-13-15-18 (16-14-17)22(19,20)21/ h13-16H,2-12H2,1H3,(H, 19,20,21)
InChIKey	KWXICGTUELOLSQ-UHFFFAOYSA-N
SMILES	CC(C)(CCCCCCCCO)C1CCC(c1)S(O)(=O)=O
LogP	4.78 at 25°C
CAS database	27176-87-0 (CAS DataBase Reference)
EPA chemical substance information	Dodecylbenzenesulfonic acid (27176-87-0)

Safety Information

Property	Value
Hazard symbol	C
Hazard class codes	34-22-10-67
Safety instructions	26-36/37/39-45-16
UN number for transport	UN 2924 3/PG 3
WGK Germany	2
RTECS number	DB6600000
TSCA	TSCA listed
Hazard class	8
Packing group	III
HS code	34021100
Storage category	3 - Flammable liquid
Hazard classification	Acute toxicity, Category 4 (Oral)
	Serious eye damage, Category 1
	Flammable liquid, Category 3
	Skin corrosion, Category 1B
	Specific target organ toxicity – single exposure, Category 3
Hazardous substances data	27176-87-0 (Hazardous Substances Data)

Product Usage

Dodecylbenzenesulfonic acid is a widely used anionic surfactant. In the detergent industry, it serves as a key raw material for producing household and industrial liquid detergents and laundry powders, offering excellent detergency, foaming, and emulsifying properties. In the textile and dyeing industry, it is used as a penetrating agent and degreaser, helping dyes penetrate evenly and removing grease from fabrics. Additionally, it acts as an auxiliary agent in pesticides, coatings, and polymerization reactions. Due to its strong acidity, it is also used in metal cleaning and industrial equipment rust removal.

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