Cadmium Stearate
Synonyms
Cadmium octadecanoate;
Stearic acid, cadmium salt;
Octadecanoic acid, cadmium salt;
Category
Anionic Surfactant
> Carboxylate
>> Chain Carboxylate
>>> Alkyl Carboxylate
>>>> Linear Alkyl Carboxylate
Chemical Numbering System
CASRN：2223-93-0
EINECS：218-743-6
Molecular Formula & Molecular Weight
Molecular Formula: C36H70CdO4；C36H72O4.Cd
Molecular Weight: 679.35
Structure
Properties
Appearance (1), white powder.
Solubility insoluble in water. soluble in hot ethanol, benzene, turpentine. dissolved by heating in organic solvent and then cooled, obtain a collid.
Hygroscopicity hygroscopic.
Stability stable.
Risk Solid form: toxic (high toxic), flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.10) label: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
1125mg/kg[1] |
|
rat inhalation LC50 |
130mg/m3/2h[1] |
|
mouse intraperitoneal LD50 |
42.1mg/kg[1] |
|
mouse oral LD50 |
590mg/kg[1] |
Human Toxicity
Table 2 Human toxicity values
|
human inhalation TCLo |
1.8mg/m3/2Y[1] |
|
women inhalation TCLo |
147mg/m3/35M[1] |
Overall carcinogenic evaluation: Group 1[1].
Ecology be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent lubricating, emulsifying, dispersing abilities.
Synthesis
Sodium stearate reacts with cadmium sulfate solution, then obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
|
Cd, % |
|
Test Methods
(1), Actives
GB/T 13173 Surface active agents - Detergents - Testing methods
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), Cd
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 lubricant.
Use as emulsifying agent, dispersing agent.
2, Plastics
Heat stabilizers, lubricants in polyethylene processing.
Lowest tintability, highest light stability and transparency of PVC soaps stabilizers.
Mainly for soft transparent products, such as sheet, film, hose and leatherette.
3, Coatings
Drier, flatting agent in paint.
Manufacturers
References
[1]: ChemIDplus. 2223-93-0, Cadmium stearate
Update: 20131102(1); 20171215(2);