Description

3-Hydroxy-2-(Hydroxymethyl)-2-Methylpropyl Stearate is a high-purity, multifunctional ester derived from stearic acid and a branched polyol. This compound is valued for its excellent emollient properties, lubricity, and ability to act as a viscosity modifier and carrier in advanced formulations. It is primarily sought after by manufacturers in the cosmetics, personal care, and pharmaceutical industries for creating premium skin creams, lotions, and topical ointments.

Application

• Cosmetic & Personal Care Formulations: Acts as a premium emollient and skin-conditioning agent in creams, lotions, and sunscreens.
• Pharmaceutical Topicals: Used as a non-irritating base and penetration enhancer in ointments, gels, and transdermal drug delivery systems.
• Lubricants & Release Agents: Functions as a bio-based lubricant and mold release agent in specialized industrial and food-contact applications.
• Plasticizer & Viscosity Modifier: Imparts flexibility and modifies rheological properties in polymer resins, coatings, and adhesives.
• Hair Care Products: Provides conditioning and shine enhancement in hair styling products and treatments.
• Carrier for Active Ingredients: Serves as a stable, inert solvent or carrier for fragrances, vitamins, and other active compounds.

Basic Information

Product Name	3-Hydroxy-2-(Hydroxymethyl)-2-Methylpropyl Stearate
CAS No.	94088-83-2
Molecular Formula	C23H46O4
Molecular Weight	386.61 g/mol
Synonyms	Trimethylolpropane Monostearate; TMP Monostearate; 2-Ethyl-2-(((1-oxooctadecyl)oxy)methyl)-1,3-propanediol; 2,2-Bis(hydroxymethyl)butyl stearate; Stearic acid, monoester with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol; 3-Hydroxy-2,2-bis(hydroxymethyl)propyl stearate; TMP-MSE
EINECS	Contact for details

Quality Control

Our 3-Hydroxy-2-(Hydroxymethyl)-2-Methylpropyl Stearate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for cosmetic and pharmaceutical applications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and excessive heat.

Specification

Item	Specification
Appearance	White to off-white waxy solid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Acid Value	≤ 2.0 mg KOH/g
Hydroxyl Value	160 - 180 mg KOH/g
Saponification Value	140 - 155 mg KOH/g
Melting Point	50 - 55 °C
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents	Meets ICH guidelines

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