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Ammonium coco-sulfate

Time:2012-09-27 17:21:07; Reading: 23

Ammonium coco-sulfate

Synonyms

Coconut oil, sulfate, ammonium salt;

Sulfuric acid, monococoyl ester, ammonium salt;

Category

Anionic Surfactant

> Sulfate

>> Chain Alcohol Sulfate

>>> Natural Substance Derivatives Sulfate

>>>> Vegetable Oil and Fat Derivatives Sulfate

Chemical Numbering System

CAS RN: 90989-98-3

EINECS: 292-758-6

Molecular Formula & Molecular Weight

Molecular Formula: N/A;

Molecular Weight: N/A.

Structure

R: coco-alkyl.

Properties

Appearance    (1), white to pale yellow gelatinous colloid; (2), white to pale yellow liquid; (3), solid.

Solubility    soluble in water.

Stability    stable in weak acid and hard water; unstable in strong acid, hydrolyzed, reduced to alcohol. At strong alkali, release ammonia.

Risk    Solid form: flammable material; irritation, moderate irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.

GHS (Rev.10) label:  

Liquid (or paste) form: irritation, moderate irritation to skin, eye.

GHS (Rev.10) label: 

Ecology    may be hazardous to environment. Water body should be given special attention.

Biodegradability    biodegradable.

Characteristics    excellent foaming, cleansing, emulsifying, wetting, permeating, dispersing, solubilizing abilities. Resistant to hard water. Particularly suitable for preparation of a low pH value (neutral to weakly acidic) products. Can be used instead of ammonium dodecyl sulfate.

Ammonium coco-sulfate and ammonium coceth sulfate complexes can produce excellent synergies, such as: rich foam, very mild, excellent thickening properties.

Note    (1), Avoid using in children cleaning products, such as: shower gels, shampoo, skin care products.

Synthesis

Currently, sulfated reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfates.

Generally, coconut alcohol 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 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

68 type

28 type

25 type

Actives, %, ≥

66.0 - 70.0

27.0 - 29.0

24.0 - 26.0

Unsulfated materials, %, ≤

4.0

1.5

1.5

(NH4)2SO4, %, ≤

2.0

1.0

1.0

NH4Cl, %, ≤

0.5

0.3

0.3

pH (25°C, 10% solution)

5.5 - 7.0

5.5 - 7.0

5.5 - 7.0

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), (NH4)2SO4

GB/T 6366 Surface active agents - Determination of mineral sulfate content - Titrimetric method

ISO 6844 Surface active agents -- Determination of mineral sulfate content -- Titrimetric method

ISO 894 Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis

(4), NH4Cl

GB/T 15963 Sodium lauryl sulfate, ammonium chloride calculated.

ISO 894 Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis

(5), 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

Solid

Paste

Liquid

Heavy metals (as Pb), mg/Kg, ≤

20

20

20

As, mg/Kg, ≤

3

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 foaming agent.

Use as cleansing agent.

2, Personal care products

Cleansing agent, emulsifying agent, foaming agent in personal care products.

For example, main ingredient or auxiliary ingredient for cleansing agent, foaming agent, emulsifying agent in toothpaste, shampoo, hand sanitizer and other products.

3, Household detergents

Use as cleansing agent, foaming agent.

Particularly, suitable for the preparation of high bubble and light-duty detergents.

4, Industrial cleaning agents

Use as cleansing agent, foaming agent.

5, Emulsion polymerization

Emulsifier, particle size controlling agent in emulsion polymerization.

6, Pets

Main ingredient or auxiliary ingredient for cleansing agent, foaming agent in shampoos and other pet products.

Manufacturers

 

Update: 20131018(1); 20161012(2);

Document

[Terminology] Dispersion system

[Terminology] Vesicle

Pandect of Ester surfactants (1): Definition

[Terminology] Van Der Waals force

[Terminology] Micellar aggregation number

Standard

Test methods of surfactants, catalog, Chinese national standards

Surfactants, catalog, Chinese national standards

Test methods of materials, catalog, Chinese national standards

Basic standards of materials, catalog, Chinese national standards

Test methods of textile auxiliaries, catalog, Chinese national standards