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Substance Name: Magnesium stearate [JAN:NF]
RN: 557-04-0
UNII: 70097M6I30
InChIKey: HQKMJHAJHXVSDF-UHFFFAOYSA-L

Classification Codes

  • Pharmaceutic Aid (Tablet and/or Capsule Lubricant)
  • Pharmaceutic Aid (Tablet Andor Capsule Lubricant)

Molecular Formulas

  • C18-H36-O2.1/2Mg
  • C36-H70-O4.Mg

Molecular Weight

  • 591.25
 
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Names and Synonyms

Name of Substance

  • Magnesium octadecanoate
  • Magnesium stearate
  • Magnesium stearate [JAN:NF]
  • Octadecanoic acid, magnesium salt

Synonyms

  • AI3-01638
  • Dibasic magnesium stearate
  • EINECS 209-150-3
  • HSDB 713
  • Magnesium distearate
  • Magnesium octadecanoate
  • Magnesium stearate
  • NP 1500
  • NS-M (salt)
  • Octadecanoic acid, magnesium salt
  • Petrac MG 20NF
  • SM 1000
  • SM-P
  • Stearic acid, magnesium salt
  • Synpro 90
  • Synpro Magnesium Stearate 90
  • UNII-70097M6I30

Systematic Names

  • Magnesium distearate, pure
  • Octadecanoic acid, magnesium salt
  • Octadecanoic acid, magnesium salt (2:1)
  • Stearic acid, magnesium salt

Superlist Name

  • Magnesium stearate

Registry Numbers

CAS Registry Number

  • 557-04-0

FDA UNII

  • 70097M6I30

Other Registry Number

  • 212132-26-8

System Generated Number

  • 0000557040

Molecular Formulas

Molecular Formulas

  • C18-H36-O2.1/2Mg
  • C36-H70-O4.Mg

Molecular Formula Fragments

  • C18-H36-O2
  • C36-H70-O4
  • COMPONENT
  • Mg

Structure Descriptors

InChI

1S/2C18H36O2.Mg/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2

InChIKey

HQKMJHAJHXVSDF-UHFFFAOYSA-L

Smiles

CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Mg+2]

Physical Properties

Physical Property Value Units Temp (deg C) Source
log P (octanol-water) 14.34 (none)   EST
Atmospheric OH Rate Constant 4.29E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.