beta-Sitosterol sulfate
Time: 2016-10-01 23:27:16
beta-Sitosterol sulfate
Synonyms
beta-Sitosteryl sulphate;
Cholest-5-en-3-beta-ol, 24-beta-ethyl-, sulfate salt (1:1);
Category
Anionic Surfactant
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Chemical Numbering System
CASRN: 24815-93-8
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: C29H50O4S; C29H50O4S (SciFinder Hill Rules)
Molecular Weight: 494.77
Structure
Properties
Appearance    (1), white powder.
Solubility    slightly soluble in water.
Stability    stable.
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 (Rev.6) label:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent emulsifying, dispersing, solubilizing, lubricating abilities.
Note    (1), Avoid using in children care products, such as: skin care products.
Synthesis
Obtained by esterification of beta-sitosterol and sulfur trioxide.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Solid
Actives, %, ≥
90.0
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.
Manufacturers