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Ethoxylated C9-11 Alcohol with 6 EO Units: Properties and Applications

Introduction

C9-11 Pareth 6, also known as ethoxylated C9-11 alcohol with 6 ethylene oxide (EO) units, is a nonionic surfactant widely used in various industries. This compound is derived from the ethoxylation of a C9-11 fatty alcohol, resulting in a versatile chemical with excellent emulsifying, wetting, and dispersing properties.

Chemical Structure and Properties

The molecular structure of C9-11 Pareth 6 consists of a hydrophobic C9-11 alkyl chain and a hydrophilic ethoxylate chain with 6 EO units. This balanced structure gives the compound its amphiphilic nature, making it effective in reducing surface tension between liquids or between a liquid and a solid.

Key properties of C9-11 Pareth 6 include:

• Appearance: Clear to slightly hazy liquid
• Solubility: Soluble in water and most organic solvents
• HLB value: Approximately 12-13 (moderate hydrophilicity)
• pH (1% solution): 5-7
• Cloud point: Around 50-60°C

Applications

C9-11 Pareth 6 finds applications across multiple industries due to its excellent surfactant properties:

1. Household and Industrial Cleaning

This surfactant is commonly used in:

• Laundry detergents
• Dishwashing liquids
• All-purpose cleaners
• Hard surface cleaners

2. Personal Care Products

In cosmetic formulations, C9-11 Pareth 6 serves as:

• Emulsifier in creams and lotions
• Foaming agent in shampoos and body washes
• Solubilizer for fragrances and essential oils

3. Industrial Applications

The compound is valuable in:

• Textile processing
• Agricultural formulations
• Paint and coating additives
• Metal working fluids

Advantages

C9-11 Pareth 6 offers several benefits compared to other surfactants:

• Excellent compatibility with both ionic and nonionic surfactants
• Good biodegradability profile
• Low irritation potential
• Effective at relatively low concentrations
• Stable over a wide pH range

Safety and Handling

While generally considered safe for most applications, proper handling procedures should be followed:

• Use appropriate personal protective equipment when handling concentrated forms
• Avoid prolonged skin contact
• Store in a cool, well-ventilated area away from strong oxidizers
• Follow local regulations for disposal

Conclusion

C9-11 Pareth 6 is a versatile ethoxylated alcohol surfactant with a balanced hydrophilic-lipophilic character. Its combination of effective surfactant properties, good compatibility, and relatively mild nature