Zinc coco-sulfate
Time: 2013-06-02 05:05:02
Zinc coco-sulfate
Synonyms
Sulfuric Acid, monococo-alkyl ester, zinc salt, (2:1);
Category
Anionic Surfactant
>> Sulfate
>> Chain Alcohol Sulfate
>> Natural Substance Derivatives Sulfate
>> Vegetable Oil and Fat Derivatives Sulfate
Chemical Numbering System
CAS RN: N/A
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A;
Molecular Weight: N/A.
Structure
R: coco-alkyl.
Properties
Appearance    (1), solid.
Solubility    soluble in water.
Stability    stable in alkali, weak acid and hard water; unstable in strong acid, hydrolyzed, reduced to alcohol.
Risk    Solid form: flammable material; irritation, 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.6) label:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent cleansing, emulsifying, foaming, wetting, dispersing, solubilizing abilities. Resistant to hard water.
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 zinc 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.
US patent 6,455,488 (Process of making alkyl sulfate granulates) describes the preparation of a particulate alkyl sulfate, but does not involve the synthesis process.
US patent US 6,331,645 (Process for preparing powdery alkyl sulfates) describes the preparation of a powdery alkyl sulfate, but does not involve the synthesis process.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Solid
Actives, %, ≥
90.0
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. Hazardous substances indexes
Item
Hazardous substances indexes
Solid
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.
2. Personal care products
Use as cleansing agent, emulsifying agent.
3. Household detergents
Use as cleansing agent, emulsifying agent.
4. Industrial cleaning agents
Use as cleansing agent.
5. Emulsion polymerization
Emulsifier, particle size controlling agent in emulsion polymerization.
6. Pets
Main ingredient or auxiliary ingredient for cleansing agent in shampoos and other pet products.
Manufacturers
 
Update: 20131018(1); 20161014(2);