Description

Isostearic Acid CAS NO 30399-84-9 is a branched-chain, liquid fatty acid derived from oleic acid, offering superior oxidative stability and low-temperature fluidity compared to its linear counterparts. This unique structure makes it an exceptionally versatile intermediate and additive for demanding industrial and personal care formulations. It is a critical raw material for manufacturers in the cosmetics, lubricants, plastics, and coatings industries seeking to enhance product performance and shelf life.

Application

• Cosmetics & Personal Care: Acts as an efficient emollient, opacifier, and viscosity modifier in creams, lotions, lipsticks, and sunscreens.
• Lubricants & Greases: Used to synthesize esters and metallic soaps that provide excellent lubricity, thermal stability, and corrosion resistance.
• Polymer & Plastic Additives: Serves as a plasticizer and internal lubricant in PVC and other polymers, improving flexibility and processing.
• Coatings & Inks: Imparts improved flow, leveling, and pigment wetting properties in alkyd resins and other coating systems.
• Textile & Leather Auxiliaries: Functions as a softening agent and lubricant in fiber processing and leather finishing.
• Chemical Intermediate: A key starting material for the synthesis of surfactants, amides, and other specialty chemicals.

Basic Information

Product Name	Isostearic Acid
CAS No.	30399-84-9
Molecular Formula	C18H36O2
Molecular Weight	284.48 g/mol
Synonyms	16-Methylheptadecanoic Acid; Isooctadecanoic Acid; Branched C18 Acid; 30399-84-9; Isostearic Acid (C18); i-Stearic Acid; Fatty acids, C16-18-branched
EINECS	250-178-0

Quality Control

Our Isostearic Acid is produced under a stringent quality management system. Every batch is tested against rigorous in-house specifications to ensure consistency in composition, purity, and performance. A comprehensive Certificate of Analysis (COA) detailing key parameters such as acid value, saponification value, iodine value, and color is provided with each shipment to guarantee compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from strong oxidizing agents and heat sources. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	Clear, pale yellow liquid
Acid Value (mg KOH/g)	180 - 200
Saponification Value (mg KOH/g)	185 - 205
Iodine Value (g I2/100g)	8 max
Color (Gardner)	3 max
Water Content (Karl Fischer)	0.1% max
Identification (IR)	Conforms

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