Description

Propylene Glycol Isostearate is a non-ionic, oil-soluble ester derived from isostearic acid and propylene glycol. This versatile chemical serves as an effective emollient, emulsifier, and viscosity modifier, prized for its ability to impart a smooth, non-greasy feel and enhance product stability. It is a critical ingredient for formulators in the cosmetics, personal care, and pharmaceutical industries, where skin compatibility and performance are paramount.

Application

• Cosmetic & Personal Care Formulations: Acts as a primary emollient and co-emulsifier in creams, lotions, sunscreens, and makeup products.
• Skin Care Products: Used in moisturizers, anti-aging serums, and body butters for its excellent skin-softening and conditioning properties.
• Hair Care Products: Functions as a conditioning agent in shampoos, conditioners, and hair styling products to improve manageability and shine.
• Pharmaceutical Topicals: Employed as an excipient in ointments, gels, and medicated creams to aid in drug delivery and improve texture.
• Industrial Lubricants & Release Agents: Serves as a component in synthetic lubricants and mold release agents for plastics and rubber.
• Food-Grade Applications (where compliant): Potential use as an emulsifier or texturizer in specific food additive formulations.

Basic Information

Product Name	Propylene Glycol Isostearate
CAS No.	63799-53-1
Molecular Formula	C21H42O3
Molecular Weight	342.56 g/mol
Synonyms	Propylene Glycol Monoisostearate; Isostearic Acid, 2-Hydroxypropyl Ester; 2-Hydroxypropyl Isostearate; PG Isostearate; Isostearic Acid Propylene Glycol Ester; Propane-1,2-diol Isostearate; 1,2-Propanediol Monoester with Isostearic Acid; Emerest® 2388 (Trade Name)
EINECS	264-938-5

Quality Control

Our Propylene Glycol Isostearate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets defined specifications for identity, purity, and performance. A Certificate of Analysis (COA) is provided with every shipment, detailing key parameters such as assay, acid value, and saponification value. We can supply grades compliant with relevant cosmetic and personal care industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen) to preserve quality. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow oily liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Acid Value	≤ 2.0 mg KOH/g
Saponification Value	155 - 175 mg KOH/g
Hydroxyl Value	150 - 180 mg KOH/g
Water Content (KF)	≤ 0.5%

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