Description

Magnesium Bis[3-(Octadecylthio)Propionate] is a high-performance organometallic compound widely used as a stabilizer and antioxidant in polymer systems. Its molecular structure provides excellent thermal and oxidative stability, making it a critical additive for extending the service life of sensitive materials. This product is essential for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance product durability and performance under demanding conditions.

Application

• Primary stabilizer and antioxidant for polyolefins (e.g., PP, PE) to prevent thermal degradation during processing and use.
• Key additive in synthetic lubricants and greases to inhibit oxidation and maintain viscosity under high-temperature operation.
• Stabilizing agent for elastomers and rubber compounds, protecting against heat and oxygen-induced cracking and hardening.
• Component in adhesive and sealant formulations to improve long-term stability and prevent gelation.
• Used in wire and cable insulation materials to enhance resistance to thermal aging.
• Additive for engineering plastics to maintain mechanical properties and color stability during high-temperature molding.

Basic Information

Product Name	Magnesium Bis[3-(Octadecylthio)Propionate]
CAS No.	38663-58-0
Molecular Formula	C42H82MgO4S2
Molecular Weight	723.55 g/mol
Synonyms	Magnesium Di(3-octadecylthiopropionate); Magnesium Stearylthiopropionate; Magnesium Distearyl Thiodipropionate; Magnesium Thiodipropionate, Stearyl Ester; Antioxidant 38663-58-0; Mg-STP; Magnesium bis(stearyl-3-thiopropionate); Magnesium Salt of 3-(Octadecylthio)propionic Acid
EINECS	Contact for details

Quality Control

Our production of Magnesium Bis[3-(Octadecylthio)Propionate] adheres to stringent quality management protocols. Each batch undergoes comprehensive analysis to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, melting point, and heavy metal content are provided and available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture. For long-term storage, consider using an inert atmosphere to mitigate potential oxidation.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to structure
Assay (Mg Content)	3.2 - 3.6 %
Melting Point	48 - 52 °C
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.