Calcium Stearate
Time:2012-10-01 16:07:48,Count:0
Synthesis
(1), Sodium stearate reacts with calcium chloride solution, then obtain.
(2), Stearic acid reacts with calcium hydroxide from non-aqueous medium, then obtain.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Solid
Actives, %, ≥
95.0
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. 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. Product standards
(1), Chinese standards
(1a), GB 1886.102 Food safety national standard -- Food additive -- Calcium stearate
(1b), Chinese Pharmacopoeia (2015 Edition) Calcium stearate
(1c), HG/T 2424Calcium stearate
4. Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.