Tin(II) Stearate
Time: 2012-10-01 16:18:13
Tin(II) Stearate
Synonyms
Tin distearate, pure;
Stearic acid, tin salt;
Octadecanoic acid, tin salt;
Tin octadecanoate;
Category
Anionic Surfactant
>> Carboxylate
>> Chain Carboxylate
>> Alkyl Carboxylate
>> Linear Alkyl Carboxylate
Chemical Numbering System
CASRN: 6994-59-8
EINECS: 230-266-5
Molecular Formula & Molecular Weight
Molecular Formula: C36H70SnO4; C36H72O4.Sn
Molecular Weight: 685.65
Structure
 
Properties
Appearance    (1), white powder.
Solubility    insoluble in water. soluble in benzene, toluene.
Stability    stable.
Risk    Solid form: 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.6) label:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent lubricating, emulsifying, dispersing abilities.
Synthesis
Sodium stearate reacts with stannous chloride solution, then obtain.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Solid
Actives, %, ≥
95.0
Sn, %
 
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), Sn
 
2. Hazardous substances indexes
Item
Hazardous substances indexes
Solid
Heavy metals (as Pb, except Sn), 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 flux.
2. Electronics
Flux ingredient used in manufacturing of flux.
Manufacturers
 
Update: 20131102(1); 20171215(2);