Polyoxyethylene alkyl phenol formaldehyde resin sodium sulfate
Time: 2012-09-27 17:20:28
Polyoxyethylene alkyl phenol formaldehyde resin sodium sulfate
Synonyms
Sopa;
Category
Anionic Surfactant
>> Sulfate
>> Phenol Polyether Sulfate
>> Phenol Polyoxyethylene Ether Sulfate
>> Phenolic Resin Polyoxyethylene Ether Sulfate
Chemical Numbering System
CASRNN/A
EINECSN/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance    (1), pale yellow or yellow-brown liquid; (2), solid.
Solubility    soluble in water. The solubility increases with the increase of EO number.
Stability    stable in weak alkali, weak acid and hard water; unstable in strong acid, hydrolyzed.
Risk    Liquid form: irritation, 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 wetting, permeating, emulsifying, dispersing, solubilizing abilities. Resistant to hard water. Performance is affected by EO number, such as: with the increase of EO number, dispersing and solubilizing capacities increase.
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.
(2), Contain formaldehyde.
Synthesis
Currently, sulfated reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfates.
Polyoxyethylene alkyl phenol formaldehyde resin and sulfur trioxide react through reactor, then sodium hydroxide 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
Liquid
Actives, %, ≥
40.0
pH (25°C, 1% solution)
5.0 - 7.0
1,4-Dioxane, ppm, ≤
30
Test Methods
(1), Actives
 
(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
(3), 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
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 emulsifying agent, dispersing agent.
Use as solubilizing agent.
Use as wetting agent.
2. Agriculture
Emulsifying agent in pesticide.
Product members
 
Manufacturers
 
Update: 20131021(1); 20170217(2);