From Industry to Cosmetics - Application Guide for n-Butyl Stearate

📝Product Overview

Butyl stearate is a long-chain fatty acid ester synthesized through an esterification reaction between stearic acid (C18 saturated fatty acid) and n-butanol. At room temperature, it appears as a colorless to pale yellow transparent oily liquid, characterized by low volatility, excellent thermal stability, and cold resistance. Its properties include:

1.Low viscosity, high lubricity

2.Good compatibility with organic solvents such as alcohols, mineral oils, and hydrocarbons

3.Low toxicity and environmentally friendly, compliant with industrial safety standards

4.Primarily used as a plasticizer, lubricant, release agent, and surface treatment agent in polymer materials, personal care, and industrial applications.

🔬Key Specifications

Appearance:  Colorless to pale yellow transparent liquid

Purity:  ≥ 98% (GC method)

Acid value:  ≤ 0.5 mg KOH/g (ASTM D974)

Saponification value: 165–175 mg KOH/g (ASTM D94)

Iodine Value:  ≤ 1.0 g I₂/100g (ASTM D5558)

Moisture Content:  ≤ 0.1% (Karl Fischer Method)

Density (20°C): 0.855–0.865 g/cm³ (ASTM D4052)

Viscosity (25°C):  7–9 mPa·s (ASTM D445)

Freezing point:  Approximately 20°C (ASTM D97)

Flash point (COC):  ≥ 180°C (ASTM D92)

🚀Application Areas

1️⃣Plastics and Rubber Processing

→ Auxiliary Plasticizers: Improve the low-temperature toughness of PVC products

→ High-efficiency Release Agents: Prevent sticking in injection molding/calendering processes

→ Rubber Flow Promoters: Improve mixing efficiency

2️⃣Coatings and Inks

→ Pigment Dispersants: Enhance filler uniformity

→ Surface Leveling Agents: Reduce orange peel effect in coatings

3️⃣Personal Care Products (INCI Compliant)

→ Skin care base: Provides a smooth texture for creams/lotions

→ Hair conditioning agent: Reduces friction and static electricity in hair

4️⃣Metal Processing

→ Lubricant additives: Extends the lifespan of cutting tools

→ Rust inhibitor carrier: Promotes the formation of a protective film on metal surfaces

5️⃣Specialty Industries

→ Wax modifier: Improves the workability of polished products

→ Textile additive: Imparts softness and anti-static properties to fabrics

📦 Packaging and Storage

Standard Packaging:

200 kg galvanized iron drums / 1,000 kg IBC ton drums (HDPE material)

Storage Guidelines

Environmental Requirements:  Store in a cool, well-ventilated warehouse at a temperature of 10–30°C

Precautions: Keep away from heat sources/open flames/strong oxidizing agents; relative humidity <70%

Sealing Management: Immediately seal the container after use to prevent moisture absorption and degradation

Shelf Life: 24 months under original, unopened conditions