Magnesium stearate

Magnesium stearate
Names
	IUPAC name Magnesium octadecanoate
Identifiers
CAS Number	557-04-0 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:9254 ;
ChemSpider	10704 {CH};
ECHA InfoCard	100.008.320
E number	E572 (acidity regulators, ...)
PubChem CID	11177;
UNII	70097M6I30 ;
CompTox Dashboard (EPA)	DTXSID2027208 ;
	InChI InChI=1S/2C18H36O2.Mg/c21-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h22-17H2,1H3,(H,19,20);/q;;+2/p-2 Key: HQKMJHAJHXVSDF-UHFFFAOYSA-L ; InChI=1/2C18H36O2.Mg/c21-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h22-17H2,1H3,(H,19,20);/q;;+2/p-2 Key: HQKMJHAJHXVSDF-NUQVWONBAM;
	SMILES [Mg+2].[O-]C(=O)CCCCCCCCCCCCCCCCC.[O-]C(=O)CCCCCCCCCCCCCCCCC;
Properties
Chemical formula	Mg(C; 18H; 35O; 2); 2
Molar mass	591.27 g/mol
Appearance	light white powder
Odor	slight
Density	1.026 g/cm3
Melting point	88.5 °C (191.3 °F; 361.6 K)
Solubility in water	0.003 g/100 mL (15 °C) ; 0.004 g/100 mL (25 °C) ; 0.008 g/100 mL (50 °C)
Solubility	negligible in ether and alcohol ; slightly soluble in benzene
Hazards
NFPA 704 (fire diamond)	1 1 0
Flash point	250 °C (482 °F; 523 K)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	> 1000 mg/kg (oral, rat)
Safety data sheet (SDS)	External MSDS
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Magnesium stearate is a metal-organic compound, a salt of magnesium and stearic acid with the idealized chemical formula (C₁₇H₃₅CO₂)₂Mg. It is classified as a metallic soap, i.e. a metal derivative of a fatty acid. Magnesium stearate is a white, water-insoluble powder. Its applications exploit its softness, insolubility in many solvents, and low toxicity. It is used as a release agent and as a component or lubricant in the production of pharmaceuticals and cosmetics.