Sulfuric acid, mono-C10-16-alkyl esters, compds. with 2-propen-1-amine
Time: 2013-10-20 12:00:22
Sulfuric acid, mono-C10-16-alkyl esters, compds. with 2-propen-1-amine
Synonyms
Mono-C10-16-alkyl sulfate, 2-propen-1-amine salt;
Category
Anionic Surfactant
>> Sulfate
>> Chain Alcohol Sulfate
>> Alkanol Sulfate
>> Linear Alkanol Sulfate
Chemical Numbering System
CASRN: 290364-24-8
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: C13H29NO4S - C19H41NO4S; C10H22O4S.C3H7N - C16H34O4S.C3H7N (SciFinder Hill Rules)
Molecular Weight: 295.44 - 379.60
Structure
R: C10-16.
Properties
Appearance    (1), liquid.
Solubility    soluble in water.
Stability    stable in alkali, weak acid and hard water; unstable in strong acid, hydrolyzed, reduced to alcohol.
Risk    Liquid form: irritation, moderate irritation to skin, eye.
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. Resistant to hard water.
Note    (1), Do not use in personal care products.
(2), Do not use in nitrosating environment. Reaction of 2-propen-1-amine and nitrous acid can not produce nitrosamines, however, reaction of contained secondary amine of 2-propen-1-amine and nitrous acid can produce nitrosamines. Nitrosamine is a carcinogen.
Synthesis
Currently, sulfated reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfates.
Generally, C10-16 alkyl alcohol and sulfur trioxide react through reactor, then 2-propen-1-amine 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. Conditions: mole ratio of sulfur trioxide and alcohols 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
Liquid
Actives, %, ≥
30.0
pH (25°C, 10% solution)
6.0 - 9.5
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
Liquid
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 cleansing agent.
Use as emulsifying agent, dispersing agent.
Use as foaming agent.
Used in organic synthesis.
Manufacturers
 
Update: 20161114(1);