STEARIC ACID RSPO

Origin

Stearic Acid RSPO (Roundtable on Sustainable Palm Oil–certified) is a vegetable-derived saturated fatty acid obtained primarily from sustainably sourced palm and palm kernel oils. This ingredient is produced through the fractionation and hydrogenation of natural triglycerides, yielding a high-purity, biodegradable fatty acid. RSPO certification ensures that the palm oil used is ethically harvested under sustainable environmental and social standards, supporting eco-responsible supply chains.

Summary

Stearic Acid RSPO is a versatile structuring and emulsifying agent widely used in cosmetic, skincare, and haircare formulations. It provides excellent thickening, stabilizing, and consistency-enhancing properties in both oil-in-water (O/W) and water-in-oil (W/O) emulsions. Known for its creamy texture and elegant finish, Stearic Acid also acts as an emollient, imparting a smooth, soft feel while reinforcing emulsion stability. Its sustainable RSPO certification makes it an ideal choice for clean, natural, and eco-conscious formulations.

Technical Data

• INCI Name: Stearic Acid
• CAS Number: 57-11-4
• Chemical Class: Long-chain saturated fatty acid (C18)
• Source: RSPO-certified palm and palm kernel oil
• HLB (Hydrophilic-Lipophilic Balance): 15.0 (lipophilic; co-emulsifier and thickener)
• Molecular Formula: C₁₈H₃₆O₂
• Molecular Weight: 284.48 g/mol
• Melting Point: 69–70 °C
• Solubility: Insoluble in water; soluble in oils, alcohols, and ethers
• Acid Value: 203–210 mg KOH/g
• Iodine Value: ≤ 1.0
• Saponification Value: 206–212 mg KOH/g
• RSPO Certification: Mass Balance (MB) or Segregated (SG) available
• Shelf Life: 36 months (store in a cool, dry place away from direct light and moisture)

Usage Level in Cosmetics and Personal Care Products

• Creams & Lotions: 1–5 %
• Body Butters & Balms: 2–10 %
• Cleansers & Soaps: 1–8 %
• Conditioners & Hair Masks: 1–4 %
• Deodorants & Sticks: 3–8 %

Properties

• Provides structure, body, and stability to emulsions
• Acts as a co-emulsifier and thickener in O/W systems
• Enhances skin feel with smooth, non-greasy texture
• Contributes to opacity and consistency
• Compatible with natural oils, waxes, and emulsifiers
• 100% plant-derived and RSPO-certified sustainable
• Biodegradable and environmentally friendly
• Supports clean and eco-conscious product labeling

Appearance

White to off-white waxy flakes or beads with a mild, neutral odor.

Product Overview

Suncoast Personal Care Products Stearic Acid RSPO is a high-purity, sustainably sourced fatty acid that enhances stability, structure, and sensorial quality in a broad range of formulations. Functioning as a thickener, co-emulsifier, and emollient, it produces smooth, creamy, and elegant textures in creams, lotions, and conditioners. With RSPO-certified sustainability, Suncoast Personal Care Products Stearic Acid RSPO aligns perfectly with clean beauty and responsible formulation principles, offering performance with integrity.

Environmental Working Group (EWG) Safety Level

EWG Rating: 1 (Low Hazard) — Safe, non-toxic, and fully biodegradable; suitable for natural and sustainable formulations.