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Ingredients

Ingredient Dictionary

MAGNESIUM STEARATE

Magnesium distearate is an organic magnesium salt and a magnesium salt.

Molecular structure

How much products actually contain

No product states its amount yet.

Of the products containing it, 150 list it before the 1% line and 58 after it (usually 1% or less).

Products using this ingredient

12 of 177 confirmed · likeliest to carry enough first · See all 177

Definition

Magnesium distearate is an organic magnesium salt and a magnesium salt.

Source: PubChem

US FDA substance register · UNII 70097M6I30 · registered name Magnesium stearate · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Magnesium Stearate is the magnesium salt of stearic acid. It conforms generally to the formula:

Cosmetic roles

Adds bulkBULKINGAdds colourCOLORANTStops powders from cakingANTICAKINGRaises skin moistureMOISTURISING

Safety & regulatory references

Restricted
ASEAN · European Union · Taiwan
Allowed colourant
United States

Source: MFDS (Korea) cosmetic regulatory information · US FDA prohibited and restricted ingredients

Argentina · Brazil

  • Field of application and/or use : Dye Substances allowed for all kinds of products.

South Korea

  • Maximum concentration :

Source: MFDS (Korea) cosmetic regulatory information

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Restriction IV/150 · Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

Reviewed by CIR: Annual Review of Cosmetic Ingredient Safety Assessment - 2001/2002

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Final Report: Safety Assessment of Fatty Acids and Fatty Acid Salts as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Final Report of the Safety Assessment of Lithium Stearate, Aluminum Distearate, Aluminum Stearate, Aluminum Tristearate, Ammonium Stearate, Calcium Stearate, Magnesium Stearate, Potassium Stearate, Sodium Stearate, and Zinc Stearate

Source: US Cosmetic Ingredient Review (CIR)

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name ステアリン酸Mg: 本品は、ステアリン酸(*)のマグネシウム塩であり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

MAGNESIUM STEARATEINCI마그네슘스테아레이트Korean label name (MFDS standard)Octadecanoic acid, magnesium saltSynonymステアリン酸MgJapanese labelling name
CAS No.chemical registry number
557-04-0
EC No.EU chemical inventory number
209-150-3
DTXSIDUS EPA chemical ID
DTXSID2027208
DTXCIDUS EPA compound ID
DTXCID307208
IUPAC
Magnesium dioctadecanoate
Molecular formula
C36H70MgO4
Molecular weight
591.257 g/mol

Measured properties

Appearance
Large Crystals, Other Solid, Dry Powder · White to yellow powder or wax-like substance, Stearates are salts of octadecanoic acid, [ACGIH]
Odour
Odorless · Faint, characteristic odor
Melting point
88.5 °C (pure) · MP: 132 °C /Technical/
Solubility
IN 100 CC WATER: 0.003 G @ 15 °C, 0.004 G @ 25 °C, 0.008 G @ 50 °C · IN 100 CC SOLVENT @ 25 °C: 0.020 G IN ALCOHOL, 0.003 G IN ETHER
Density
1.028 · 1.02 g/cm³
Colour
white
Melting/freezing point
88 ℃
Vapour pressure
(6.52E-15mmHg 25℃ (est.))
Relative density
1.02
n-Octanol/water partition coefficient (Kow)
14.34 (est.)
Molecular weight
591.3

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 134 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

  • Processing aids not otherwise specified62
  • Lubricating agent16
  • Anti-adhesive/cohesive9
  • Anti-caking agent7
  • Filler5
  • Surfactant (surface active agent)4
  • Binder4
  • Flavouring and nutrient4
12 other uses
  • Dye3
  • Heat stabilizer3
  • Waterproofing agent3
  • Humectant3
  • Anti-static agent3
  • Flame retardant2
  • Drier1
  • Plasticizer1
  • Surface modifier1
  • Thickening agent1
  • Dispersing agent1
  • pH regulating agent1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 1 eye studies are on record.

Classed as low1

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 3 studies
  • Category 3
    Skin Irritation · Screening
  • Classification not possible
    Skin Sensitization · Screening
  • Category 2B
    Eye Irritation · Screening

Source: US EPA CompTox dashboard

Related literature

Linked databases 22