BGC > CAS Search > 557-04-0

Molecular Formula: 2(C18H35O2).Mg

Appearance	(tiny, light and white powder)
Mg content	4.0%~5.0%
Loss on Drying	≤ 5.0%
Free acid	≤ 1.0%
Melting point	110~160°C
Particle size	≥ 99% through 325 mesh)
Bulk density	0.1~0.35g/ml

Molecular Formula: C36H70MgO4
Molecular Weight: 591.24
Hazard Symbols: Xi
WGKGermany: -
HS Code: 29157030

EINECS: 209-150-3
Molecular formula: C36H70MgO4

Alternative name	Magnesiumstearat
Further description	Magnesii stearas
Monograph	Ph.Eur.9.0
Pharmaceutical status	free
INCI	Magnesium Stearate
UEXDES	Chemicals solid

Appearance: A white, very fine, light, powder, greasy to touch

Identification A: The tests for Magnesium

Identification B: Conform

Acidity or alkalinity: Conform

Loss on Drying: ≤6.0 %

Chloride: ≤0.1%

Sulphates: ≤1.0%

Lead: ≤10ppm

Cadmium: ≤3ppm

Nickel: ≤5ppm

Stearic Acid: ≥40.0%

Stearic Acid&Palmitic acid: ≥90.0%

TAMC: ≤1000CFU/g

TYMC: ≤500CFU/g

Escherichia coli: Absent

Salmonella species: Absent

Assay（Mg）: 4.0%-5.0%

Molecular Formula: C36H70MgO4

USP (excipient)

Name: Magnesium stearate
Cas: 557-04-0
Assay :99%min
Performance and application 
Nature:A white or almost white powder odourless ,tasteless .Insoluble in water.
Application : the goods used as PVC thermal stabilizer, and cosmetics in flour, oil of skin and the raw material of pharmaceutical tablet (cs) medicine, lubrication medicine);Used in the school wood powder of lubrication glossy transparent;Paint industry as transparent smoothing agent, etc.Used as PVC stabilizer of metal soap more cadmium, barium, calcium, zinc, magnesium, senior fatty acid salt, chengji is stearic acid is lauric acid salts.The performance of metal soap stabilizer and varies with the kinds of metal and acid radical, general rules are as follows: heat resistance: cadmium, zinc soap early heat;Barium, calcium, magnesium, strontium soap long-term heat and lead soap in the middle.Weather: cadmium, zinc, lead, barium, tin soap is better.Machining: lead, cadmium soap good lubricity, but acid radical lubricity also had an impact on.Widely used in food, medicine, paint, plastic, rubber, textile, etc 

Spec for Resorcine
Item Specifications Results
Appearance White light no sand behavior 
fine poeder .no visible evidence
 of contamintion by foreign matter  Conforms
Identification  Conform Conforms
Solubility test Conform Conforms
Acid number  195-210 208
chlorides Not more than 0.25% <0.25%
sulfate Not more than <0.5%
Loss on drying  Not more than 4.2%
Heavy metals (lead) Not more than <10ppm
Assay (mg) 4.0%~5.0% 4.3%
Total microbial count  Not more than Conforms
Total mold and yeast Not more than Conforms
Escherichia coli negative Not detect
 

Packaging: 25kg /bag
Storage: Keep in the original packaging in a clean,dry,low humidity environment.