Nonylphenol polyoxyethylene sulfuric acid
Synonyms
Poly(oxy-1,2-ethanediyl), alpha-sulfo-omega-(nonylphenoxy)-;
Polyethylene glycol nonylphenyl ether hydrogen sulfate;
Category
Anionic Surfactant
> Sulfate
>> Phenol Polyether Sulfate
>>> Phenol Polyoxyethylene Ether Sulfate
>>>> Linear Alkylphenol Polyoxyethylene Ether Sulfate
Chemical Numbering System
CAS: 9081-17-8
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: (C2H4O)n.C15H24O4S
Molecular Weight: N/A
Structure
Properties
Appearance liquid to solid.
Odor faint characteristic odor.
Solubility slightly soluble to soluble in water. The solubility increases with the increase of EO number.
Stability stable in weak acid and hard water; unstable in strong acid, hydrolyzed; react with alkali to produce the corresponding salts.
Risk Liquid form: corrosion, irritation, irritation to skin, eye.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, foaming, emulsifying, wetting, dispersing, solubilizing, foam stabilizing abilities. Resistant to hard water. Performance is affected by EO number, such as: with the increase of EO number, cleansing capability decreases, solubilization capacity increases.
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.
Polyoxyethylene nonyl phenyl ether and sulfur trioxide react through reactor, then 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 |
|
Actives, %, ≥ |
90.0 |
|
1,4-Dioxane, ppm, ≤ |
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), 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 |
|
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 foam stabilizing agent, foaming agent.
Use as solubilizing agent.
Used in the preparation of anionic surfactants, such as: sodium nonoxynol sulfate.
2, Industrial cleaning agents
Use as cleansing agent, foaming agent.
3, Emulsion polymerization
Emulsifier, particle size controlling agent in emulsion polymerization.
Product members
Manufacturers
Update: 20170123(1);