C10-14 alkyl benzenesulfonic acid
Time: 2012-10-01 09:09:26
C10-14 alkyl benzenesulfonic acid
Synonyms
Linear C10-14 Alkylbenzene Sulfonic Acid;
Benzenesulfonic acid, mono-C10-14-alkyl derivs.;
Category
Anionic Surfactant
>> Sulfonate
>> Aryl Sulfonate
>> Phenyl Sulfonate
>> Linear Alkylphenyl Sulfonate
Chemical Numbering System
CASRN85117-49-3
EINECS285-599-9
Molecular Formula & Molecular Weight
Molecular Formula: C16H26O3S - C20H34O3S
Molecular Weight: 298.44 - 354.55
Structure
R: C10-14.
Properties
Appearance    (1), brown to dark brown viscous liquid.
Solubility    slightly soluble in water.
Stability    stable.
Risk    Liquid form: flammable material; irritation, moderate irritation to skin, eye. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.6) label:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent cleansing, foaming, emulsifying, wetting, dispersing, solubilizing abilities. Intolerance to hard water.
Note    (1), Avoid using in children cleaning products, such as: shampoos, shower gels.
Synthesis
Currently, sulfonation reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfonates.
Generally, C10-14 alkylbenzene and sulfur trioxide react through reactor, finally obtain product.
US patent 8,921,588 (Process for preparing sulfates and/or sulfonates in a micro-reaction system) presents a synthetic process. Conditions: mole ratio of sulfur trioxide and alkyl benzenes or other raw materials: 1:1; temperature: 30-60°C; reactor: falling film reactor.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Actives, %, ≥
96.0
pH (25°C, dope), <
1.0
Test Methods
(1), Actives
GB/T 5173 Surface active agents and detergents-Determination of anionic-active matter by direct two-phase titration procedure
ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
(2), pH
GB/T 6368 Surface active agents - Determination of pH of aqueous solution - Potentiometric method
ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
2. Hazardous substances indexes
Item
Hazardous substances indexes
Heavy metals (as Pb), mg/Kg, ≤
20
As, mg/Kg, ≤
3
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents - Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents - Determination of total arsenic
3. Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances; or furtherly test for microorganisms.
(c), Generally, C10-C14 alkylbenzenesulfonic acid and dodecyl benzenesulfonic acid replace to use each other.
Major Uses
1. Typical applications
Use as cleansing agent.
Use as emulsifying agent, dispersing agent.
Used for preparing alkali metal salt, amine salts of C10-14 alkylbenzene sulfonic acid.
2. Household detergents
Use as cleansing agent, foaming agent. Such as: laundry detergent, hard surface cleaning agents.
3. Industrial cleaning agents
Use as cleansing agent, emulsifying agent. Such as: vehicle detergent, metal cleaning agent.
4. Emulsion polymerization
Emulsifier, particle size controlling agent in emulsion polymerization.
5. Personal care products
Use as cleansing agent, foaming agent.
6. Pets
Use as cleansing agent, foaming agent.
Manufacturers
 
Update: 20131025(1); 20170418(2);