Polyethylene glycol mono-C6-10-alkyl ether sulfate ammonium salt
Synonyms
Ammonium C6-10-alkyl polyoxyethylene sulfate;
C6-10 Alkylethoxylate sulfuric acid, ammonium salt;
Poly(oxy-1,2-ethanediyl), alpha-sulfo-omega-hydroxy-, C6-10-alkyl ethers, ammonium salts;
Ammonium C6-10 pareth sulfate;
Category
Anionic Surfactant
> Sulfate
>> Alcohol Polyether Sulfate
>>> Alcohol Polyoxyethylene Ether Sulfate
>>>> Linear Alkanol Polyoxyethylene Ether Sulfate
Chemical Numbering System
CAS: 68037-05-8
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A; (C2H4O)n.C6H14O4S.H3N - (C2H4O)n.C10H22O4S.H3N
Molecular Weight: N/A
Structure
R: C6-10.
Properties
Appearance (1), paste; (2), liquid; (3), solid.
Odor faint characteristic odor.
Solubility soluble in water. The solubility increases with the increase of EO number.
Stability stable in weak acid and hard water; unstable in alkali, strong acid.
Risk Liquid (or paste) form: irritation, low irritation to skin, eye. Under the same hydrophobic base, with the increase of EO number, toxicity and irritation decrease, in general, the EO number is greater than 5, the decline is significantly smaller, tends to flat.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, foaming, emulsifying, wetting, permeating, dispersing, solubilizing abilities. Resistant to hard water. Performance is affected by EO number, such as: with the increase of EO number, wetting, permeating and cleansing capabilities decrease, solubilization capacity increases. Easily thicken, can provides good viscosity. Particularly suitable for weakly acidic formula. Almighty foaming agents, especially at low temperatures does not affect foaming property.
Note (1), 1,4-dioxane generated during preparation: probable carcinogen. However, can be acceptable when concentration of 1,4-dioxane is less than 30ppm or less.
Synthesis
Currently, sulfated reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfates.
1, Synthesis of polyether
Obtain by polymerization reaction of C6-10 alkyl alcohol and ethylene oxide.
For further information, see:
US patent 4,223,163 Process for making ethoxylated fatty alcohols with narrow polyethoxy chain distribution; US patent 4,967,017 Alcohol ethoxylates of reduced EO content or residual PO content; US patent 5,069,817 Process for making polyoxyethylene surfactants with desirable low temperature behavior, etc.
2, Synthesis of sulfate
C6-10 alkyl alcohol polyoxyethylene ether and sulfur trioxide react through reactor, then ammonia water 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 polyethers 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 |
|
|
High-enriched type |
Low-enriched type |
|
|
Actives, %, ≥ |
55.0 - 72.0 |
25.0 - 30.0 |
|
Unsulfated materials, %, ≤ |
2.50 |
0.3 - 1.0 |
|
Ethanol insoluble materials, %, ≤ |
0.25 |
/ |
|
NH4Cl, %, ≤ |
0.5 |
0.03 - 0.8 |
|
(NH4)2SO4, %, ≤ |
1.0 |
0.16 - 0.8 |
|
pH (25°C, 10% solution) |
4.5 - 7.0 |
4.5 - 7.0 |
|
1,4-Dioxane, ppm, ≤ |
30 |
30 |
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), Unsulfated materials
GB/T 11989 Anionic surface active agents -- Determination of soluble matter content in light petroleum
ISO 894 Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis
(3), Ethanol insoluble materials
GB/T 13173 Surface active agents -- Detergents -- Testing methods
(4), NH4Cl
GB/T 15963 Sodium lauryl sulfate, as ammonium chloride calculated.
ISO 894 Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis
(5), (NH4)2SO4
GB/T 15963 Sodium lauryl sulfate, as ammonium sulfate calculated.
ISO 894 Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis
(6), 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
(7), 1,4-Dioxane
GB/T 26388 Determination of dioxane residues in surfactants - Gas chromatographic method
ISO 17280 Surface active agents -- Determination of 1,4-dioxan residues in surfactants obtained from epoxyethane by gas chromatography
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
|
High-enriched type |
Low-enriched type |
|
|
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 cleansing agent.
Use as wetting agent, permeating agent.
Use as emulsifying agent, dispersing agent.
Use as foaming agent.
Use as solubilizing agent.
2, Household detergents
Main ingredient or auxiliary ingredient for cleansing agent, foaming agent in laundry detergent, hard surface detergent (for example: glass detergent) and other household products.
3, Industrial cleaning agents
Main ingredient or auxiliary ingredient for cleansing agent, foaming agent in car cleaning products, metal cleaning products and other industrial cleaning products.
4, Emulsion polymerization
Emulsifier, particle size controlling agent in emulsion polymerization.
5, Textile, leather
Use as emulsifier, foaming agent, wetting agent, cleansing agent, solubilizing agent.
Product members
Polyethylene glycol (2) mono-C6-10-alkyl ether sulfate ammonium salt;
Polyethylene glycol (3) mono-C6-10-alkyl ether sulfate ammonium salt;
Polyethylene glycol (4) mono-C6-10-alkyl ether sulfate ammonium salt;
Manufacturers
Update: 20131018(1); 20161202(2);