Dodecylbenzenesulphonic acid Chemical Properties

Melting point:

10°C

Boiling point:

82 °C

Density 

1.06 g/mL at 20 °C(lit.)

vapor pressure 

0Pa at 25℃

refractive index 

n20/D 1.51

Flash point:

85 °F

storage temp. 

2-8°C

solubility 

water, alcohols, glycol ethers, glycols, esters, ketones, aromatic and aliphatic hydrocarbons: soluble

pka

0.7[at 20 ℃]

form 

Colourless Solution

color 

Colorless to light yellow

Water Solubility 

100mg/L at 25℃

Stability:

Stable. Hygroscopic. Incompatible with bases, oxidizing agents, metals.

LogP

4.78 at 25℃

CAS DataBase Reference

27176-87-0(CAS DataBase Reference)

EPA Substance Registry System

Dodecylbenzenesulfonic acid (27176-87-0)

Safety Information

Hazard Codes 

C

Risk Statements 

34-22-10-67

Safety Statements 

26-36/37/39-45-16

RIDADR 

UN 2924 3/PG 3

WGK Germany 

2

RTECS 

DB6600000

HazardClass 

8

PackingGroup 

III

HS Code 

34021100

Hazardous Substances Data

27176-87-0(Hazardous Substances Data)

MSDS

• Language:English Provider:Laurylbenzenesulfonic acid
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

Dodecylbenzenesulphonic acid Usage And Synthesis

Description

Dodecylbenzenesulfonic acid is a light yellowto brown liquid with a slight SO2 odor. Molecularweight= 326.54; Boiling point = 315℃; Freezing/Meltingpoint = 10℃. Hazard Identification (based on NFPA-704 MRating System): Health 3, Flammability 1, Reactivity 1.Soluble in water.

Chemical Properties

brown or tan solid

Uses

Dopant for conducting polymers strong acid catalyst for amino cross-linked coatings

Definition

ChEBI: 2-dodecylbenzenesulfonic acid is a member of the class dodecylbenzenesulfonic acids that is benzenesulfonic acid in which the hydrogen at position 2 of the phenyl ring is substituted by a dodecyl group. It has a role as an animal metabolite.

Application

Dodecylbenzenesulphonic acid(DBSA) can be used as a catalyst for the esterification of fatty acids (oleic acids) to produce biodiesel. It can be used as a Bronsted acid catalyst for the green synthesis of quinoxaline derivatives which are used in a variety of pharmacological profiles. It may be electrodeposited with polypyrrole(PPy) films on the aluminium alloy to protect against corrosion. Water based nanofluids with enhanced thermal conductivity and specific heat capacity may be prepared by doping polyanaline (PANI) into dodecylbenzenesulphonic acid. Dodecylbenzenesulphonic acid is also a dopant for conducting polymers and a strong acid catalyst for amino crosslinked coatings.

General Description

Dodecylbenzenesulphonic acid is a colorless liquid. Dodecylbenzenesulphonic acid is soluble in water. Dodecylbenzenesulphonic acid is corrosive to metals and tissue. Dodecylbenzenesulphonic acid is used to make detergents.

Air & Water Reactions

Soluble in water.

Reactivity Profile

Dodecylbenzenesulphonic acid is corrosive. When heated to decomposition or on contact with strong acids produces highly toxic fumes of oxides of sulfur. The toxicity and hazards of individual alkylbenzene sulfonic acids must be assessed individually [Kirk-Othmer, 3rd ed., Vol. 22, 1978, p. 45].

Health Hazard

EYES AND SKIN: A 0.5% to 1% concentration in water caused significant irritation. The technical grade is corrosive and may cause irreversible damage to eyes and skin. INGESTION: Irritation of the mouth, esophagus and stomach. Diarrhea, intestinal distention and occasional vomiting.

Fire Hazard

Special Hazards of Combustion Products: May give off SO 3 , SO 2 and H 2 S

Flammability and Explosibility

Not classified

Agricultural Uses

Insecticide, Adjuvant, Biocide: Dodecylbenzenesulfonic acid and its salts are used as degreasers in meat-cutting rooms. Also used as a laboratory chemical, to make detergents, and in electronically cleaning and pickling baths. Not listed for use in EU countries. Approved for use in the U.S. and other countries. There are 30 global suppliers.

Trade name

ACCOMPLISH®[C]; ACIDET®; ACIDISOL®; CALSOFT LAS 99®; E 7256®; ELFAN WA sulphonic acid®; NACCONOL 98 SA®; RHODACAL ABSA®

Potential Exposure

Used as a laboratory chemical. Usedfor cleaning electronic components; emulsifier foragricultural herbicides; in polymerization; in pickling baths;as a wetting agent in various industrial applications Used inthe production of biologically soft detergents, includinghousehold detergents (laundry liquids and powders, dishwashing liquids, and various other cleaners).

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. If victim is conscious, administer water ormilk. Do not induce vomiting

storage

Follow regulations in OSHA29CFR1910.134 or European Standard EN149. Use aNIOSH/MSHA- or European Standard EN149-approvedrespirator; or use an approved supplied-air respirator with afull face-piece operated in the positive-pressure mode, orwith a full face-piece, hood, or helmet in the continuousflow mode; or use a NIOSH/MSHA- or European StandardEN149-approved self-contained breathing apparatus with afull face-piece operated in pressure-demand or other positive-pressure mode.

Shipping

Dodecylbenzenesulfonic acid requires a shippinglabel of “CORROSIVE.” It falls in Hazard Class 8 andPacking Group II. The symbol “D” identifies proper shipping names which are appropriate for describing materialsfor domestic transportation but may be inappropriate forinternational transportation under the provisions of international regulations (e.g., IMO, ICAO). An alternate propershipping name may be selected when either domestic orinternational transportation is involved.

Incompatibilities

May attack metals, forming flammablehydrogen gas. Keep away from combustible materials.

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