Glycerol Monostearate, Glyceryl monostearat, Monostearin, GMS, GMS90, E471, 123-94-4, 31566-31-1, 11099-07-3, 342394-34-7

Glycerol Monostearate, Glyceryl monostearat, Monostearin, GMS, GMS90, E471, 123-94-4, 31566-31-1, 11099-07-3, 342394-34-7

CAS: 123-94-4;31566-31-1;11099-07-3;342394-34-7

Mandatory Use Cases

• Chocolate industry:

  • E492 → critical for preventing fat bloom.

  • E322 → standard for viscosity control.

• Margarine & spreads:

  • E471 → mandatory for stabilizing oil-water emulsions.

• Tahini halva (industrial production):

  • E471 + E492 → best solution to prevent oil separation.

  • E322 → optional but beneficial for shelf life.

• Pharmaceuticals:

  • E471 → mandatory as tablet binder.

  • E322 → widely used for capsule coating.

• Cosmetics:

  • E471 + E322 → standard stabilizers in creams and lotions.

Summary

• For halva, E471 is the primary additive, E492 is the complementary stabilizer, and E322 is optional but useful.

• For chocolate and margarine, E471 and E492 are mandatory.

• For pharma and cosmetics, E471 and E322 are standard stabilizers.

The CAS numbers 31566-31-1, 11099-07-3, and 342394-34-7 are all alternative registry entries for Glyceryl Monostearate (GMS, E471). They represent the same substance (monoester of glycerol and stearic acid) but are recorded under different identifiers depending on purity, isomer form, or supplier registration.

Detailed Explanation of Each CAS

CAS 31566-31-1

• Name: Glyceryl monostearate / Stearic acid, monoester with glycerol

• Formula: C₂₁H₄₂O₄

• Properties: White to cream wax-like solid, melting point ~78–81 °C, insoluble in water but dispersible with surfactants.

• Use: Food emulsifier (E471), cosmetics stabilizer, pharmaceutical excipient.

CAS 11099-07-3

• Name: Glyceryl monostearate (alternative registry)

• Description: Prepared by esterification of long-chain fatty acids (C16–C18) with glycerol.

• Properties: Milky white waxy solid, soluble in ethanol/ether, non-ionic surfactant.

• Use: Common in cosmetics (glyceryl stearate SE), food emulsifier, and pharma binder.

CAS 342394-34-7

• Name: Monostearin / 1-Monostearoylglycerol

• Formula: C₂₀H₄₀O₅

• Synonyms: 2,3-Dihydroxypropyl 17-hydroxyheptadecanoate, Aldo MSLG.

• Properties: Density ~1.0 g/cm³, boiling point ~504 °C, flash point ~165 °C.

• Use: Same as above — food emulsifier (E471), cosmetic stabilizer, industrial additive.

Why Multiple CAS Numbers Exist

• Isomeric forms: Alpha-monostearate vs. beta-monostearate.

• Purity grades: Standard GMS (~40–50% monoglyceride) vs. GMS90 (≥90% monoglyceride).

• Different registries: Suppliers and chemical databases sometimes assign alternate CAS identifiers.

• Trade names: Linked to commercial products like Arlacel 165, Emerest 2407, Aldo MSD/MSLG.

Practical Note for Documentation

• Primary CAS reference: 123-94-4 is the most widely recognized for E471.

• Alternate CAS numbers (31566-31-1, 11099-07-3, 342394-34-7): Should be listed in compliance tables as synonyms to ensure supplier compatibility and audit clarity.

​​Suitability & Mandatory Use Table