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.7) 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);