Ammonium beta-Sitosteryl Sulfate
Synonyms
beta-Sitosteryl sulfate, ammonium salt;
Category
Anionic Surfactant
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Chemical Numbering System
CAS: N/A
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: C29H53NO4S; C29H50O4S.H3N
Molecular Weight: 511.80
Structure
Properties
Appearance (1), white solid.
Solubility slightly soluble in water.
Stability stable. At strong alkali, release ammonia. Easily oxidized.
Risk Solid form: flammable material; irritation, 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: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent emulsifying, dispersing, solubilizing, lubricating abilities. Suitable for preparation of a low pH value (neutral to weakly acidic) products.
Note (1), Avoid using in children care products, such as: skin care products.
Synthesis
Obtained by esterification of beta-sitosterol and sulfur trioxide, by neutralization of ammonia solution.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
80.0 |
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 |
|
Solid |
|
|
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.
Major Uses
1, Typical applications
Use as emulsifying agent, dispersing agent.
2, Personal care products
Use as conditioning agent.
Have certain anti-inflammatory, hair growing, hair raising effects.
Manufacturers
Update: 20131018(1); 20161001(2);