Petroleum Sulfonic Acid, Sodium Salt
Synonyms
Mineral oil sulfonic acids, sodium salts;
Oil soluble petroleum sulfonate, sodium salt;
Oil soluble petroleum sulfonates, sodium salts;
Petroleum sulfonic acid, monosodium salt;
Petroleum sulfonic acids, sodium salts;
Petroleumsulfonate, sodium salt;
Sulfonated petroleum soap;
Sulfonated petroleum, sodium salt;
Sulfonic acids, petroleum, sodium salts;
Sodium petroleum sulfonate;
T702;
Category
Anionic Surfactant
> Sulfonate
>> Aryl Sulfonate
>>> Natural Substance Sulfonate
>>>> Natural Substance (Petroleum Source) Sulfonate
Chemical Numbering System
CASRN：68608-26-4
EINECS：271-781-5
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), yellow or red brown or black liquid; (2), solid.
Solubility slightly soluble in water to soluble in water. generally, average molecular weight is higher, solubility is smaller. When electrolyte content is greater than 1%, can be salt out easily.
Stability stable.
Risk Solid form: flammable material; irritation, moderate irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.10) label: 
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.10) label:
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, antirust, anticorrosive, lubricating, emulsifying, solubilizing, dispersing, foaming abilities.
Synthesis
Currently, sulfonation reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfonates.
Generally, distillate oil and sulfur trioxide react through reactor, then sodium hydroxide or sodium carbonate neutralizes, finally obtain product.
US patent 8,921,588 (Process for preparing sulfates and/or sulfonates in a micro-reaction system) presents a synthetic process.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
30.0 - 70.0 |
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, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
|
Liquid |
Solid |
|
|
Heavy metals (as Pb), mg/Kg, ≤ |
20 |
20 |
|
As, mg/Kg, ≤ |
3 |
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, Product standards
(1), Chinese standards
(1a), SY/T 7328 Petroleum sulfonate for oil displacement
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1, Typical applications
Use as rust inhibitor, anticorrosive agent.
Use as lubricant.
Use as agent for tertiary oil recovery.
Use as cleansing agent.
Use as emulsifying agent, dispersing agent.
2, Petroleum
Widely use as agent for tertiary oil recovery.
Be prepared by atmospheric and vacuum two, three-wire oil or heavy alkylbenzene.
This type of sodium petroleum sulfonate, usually has a good water solubility, in the system, be easy to achieve ultra-low interfacial tension.
Use as fracturing fluid additive. Can reduce the amount of fracturing fluid loss.
Use as plugging agent additive.
Use as oil-based mud treatment agent. Can improve emulsion ability of slurry.
3, Industrial cleaning
Use as cleansing agent.
Be prepared by atmospheric and vacuum two, three-wire oil or heavy alkylbenzene.
Can be used in cleaning heavy dirt.
This type of sodium petroleum sulfonate, usually has a good water solubility.
4, Lubrication
Use as lubricant, emulsifying agent.
5, Rust protection, corrosion inhibition
Widely use as rust inhibitor, emulsifying agent.
Be prepared by lubricating oil distillate.
To black metal and brass, anti-rust performance is better. Good resistance to salt water. Have a strong ability to replace of sweat and water.
This type of sodium petroleum sulfonate, water solubility is lower and oil solubility is higher. So, it can be used as a cosolvent for a variety of polar substances in oil.
Often used in the process of cleaning and anti-rust oils, anti-rust greases, cutting fluids and other products
Manufacturers
Update: 20131025(1); 20170405(2);