C36H70MgO4
591.2 g/mol
Pharmaceutical IntermediateWarning
MAGNESIUM STEARATE
CAS557-04-0EC209-150-3
Category
Pharmaceutical Intermediate
Compound Class
Organometallic
Primary Use
Pharmaceutical Intermediate
Magnesium stearate is a metal-organic compound formed from magnesium and stearic acid, commonly used as a lubricant and excipient in pharmaceutical tablet manufacturing.
Pharmaceutical tablet lubricantExcipient in tablet formulations
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
Zinc stearate
CAS557-05-1
releasing agent and lubricant
StrongSame Parent
Potassium stearate
CAS593-29-3
metallic soap as lubricating agent
StrongSame Parent
Barium stearate
CAS6865-35-6
Heat stabilizer
StrongSame Parent
Stearic acid, lead salt
CAS7428-48-0
stabilizer and lubricant additive
StrongStructure SimilarSimilarity 1.00
Sodium caprylate
CAS1984-06-1
food additive and plasma fractionation agent
ReferenceSame Category
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pharmaceutical intermediate
ReferenceSame Category
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pharmaceutical intermediate
ReferenceSame Category
1-(tert-Butyl) 3-methyl 2,5-dihydro-1H-pyrrole-1,3-dicarboxylate
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pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H413May cause long lasting harmful effects to aquatic life
H316Causes mild skin irritation
H320Causes eye irritation
Customs Tariff Classification
The international HS code for MAGNESIUM STEARATE (CAS 557-04-0) is 2915.70, 3824.99.
HS code (international, 6-digit)
2915.70, 3824.99
EU CN code (8-digit)
2915 70 50, 3824 99 93
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
magnesium bis(octadecanoate)
InChIKey
HQKMJHAJHXVSDF-UHFFFAOYSA-L
SMILES
CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Mg+2]
Synonyms (20)
- SM-P
- Dibasic magnesium stearate
- MAGNESIUM STEARATE
- Magnesii stearas
- Magnesium distearate
- Magnesium distearate, pure
- Magnesium octadecanoate
- Magnesium stearate (JP17/NF)
- Magnesium stearate g
- Magnesium stearate, tech
- NS-M (salt)
- Petrac MG 20NF
- Stearic acid, magnesium salt
- Synpro 90
- Synpro Magnesium Stearate 90
- magnesium dioctadecanoate
- magnesium(ii) stearate
- stearatedemagnesium
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