Petroleum Sulfonic Acid, Magnesium Salt
Synonyms
Magnesium petroleum sulfonate;
Magnesium petroleum sulfonates;
Sulfonated petroleum, magnesium salt;
Sulfonic acids, petroleum, magnesium salts;
Category
Anionic Surfactant
> Sulfonate
>> Aryl Sulfonate
>>> Natural Substance Sulfonate
>>>> Natural Substance (Petroleum Source) Sulfonate
Chemical Numbering System
CAS: 61789-87-5
EINECS: 263-094-4
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), brown-red liquid; (2), solid.
Solubility insoluble in water.
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 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 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 abilities. Synergies compatibility with low alkali calcium petroleum sulfonate.
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 magnesium hydroxide 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 |
|
Actives, %, ≥ |
30.0 - 60.0 |
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, 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 oil detergent.
Use as rust inhibitor, anticorrosive agent.
Use as lubricant.
2, Petrochemical
Use as oil detergent widely. Has a good oil cleansing performance under high temperature. Has a good acid neutralizing performance. Synergies compatibility with ashless agent, antioxidant and corrosion inhibitor.
Mainly used in the preparation of high-grade internal combustion engine lubricating oil.
Can significantly reduce the high temperature deposits on the engine parts, keep the piston clean, reduce the mechanical corrosion, and can extend the oil change period.
Manufacturers
Update: 20131025(1); 20170405(2);