Description

2-(Hydroxymethyl)-2-[[(1-Oxooctadecyl)Oxy]Methyl]Propane-1,3-Diyl Distearate is a high-purity, multi-functional ester compound widely utilized as a versatile chemical intermediate and additive. Its unique molecular structure, featuring a central pentaerythritol core esterified with long-chain fatty acids, provides excellent lubricity, hydrophobicity, and thermal stability. This product is essential for formulators and manufacturers in the cosmetics, plastics, and specialty chemicals industries seeking to enhance product performance and processing characteristics.

Application

• Cosmetics & Personal Care: Acts as a high-efficiency emollient, skin-conditioning agent, and viscosity modifier in creams, lotions, and makeup products.
• Plastic & Polymer Additive: Functions as an internal and external lubricant and processing aid in PVC, polyolefins, and engineering plastics to improve flow and mold release.
• Synthetic Lubricants: Serves as a base stock or additive in specialty lubricant formulations requiring high thermal and oxidative stability.
• Chemical Intermediate: Used in the synthesis of more complex esters, surfactants, and polymeric materials.
• Textile & Fiber Processing: Employed as a softening agent and spin finish component to reduce friction and improve fiber handling.
• Coatings & Inks: Imparts slip and mar resistance, and acts as a flow control agent in various coating systems.

Basic Information

Product Name	2-(Hydroxymethyl)-2-[[(1-Oxooctadecyl)Oxy]Methyl]Propane-1,3-Diyl Distearate
CAS No.	28188-24-1
Molecular Formula	C81H158O8
Molecular Weight	1250.1 g/mol
Synonyms	Pentaerythritol Tetrastearate; Pentaerythrityl Tetrastearate; PETS; Tetrastearyl Pentaerythritol; 2,2-Bis(hydroxymethyl)-1,3-propanediol tetrastearate; Pentaerythritol Stearate; Pentaerythritol Ester of Stearic Acid; Pentaerythrityl Tetraoctadecanoate
EINECS	248-911-5

Quality Control

Our 2-(Hydroxymethyl)-2-[[(1-Oxooctadecyl)Oxy]Methyl]Propane-1,3-Diyl Distearate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, acid value, hydroxyl value, and melting point. Our quality commitment ensures consistent supply and reliable performance for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and heat sources. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white flakes or powder
Identification (IR)	Conforms
Assay (GC/HPLC)	≥ 95.0%
Acid Value	≤ 5.0 mg KOH/g
Hydroxyl Value	≤ 20.0 mg KOH/g
Melting Point	55 - 65 °C
Color (APHA)	≤ 100
Heavy Metals (as Pb)	≤ 10 ppm

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