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

## Introduction to C9-11 Pareth 6

C9-11 Pareth 6, also known as Ethoxylated C9-11 Alcohol with 6 EO Units, is a nonionic surfactant widely used in various industrial and consumer applications. This chemical compound is created through the ethoxylation of C9-11 fatty alcohols with approximately 6 ethylene oxide (EO) units.

## Chemical Structure and Properties

The molecular structure of C9-11 Pareth 6 consists of a hydrocarbon chain (C9-11) with an ethoxylate group containing 6 ethylene oxide units. This structure gives the compound its unique properties:

– Hydrophilic-Lipophilic Balance (HLB): Approximately 12-13
– Appearance: Clear to slightly hazy liquid
– Solubility: Soluble in water and most organic solvents
– pH (1% solution): 5-7
– Cloud point: Around 50-60°C (varies with concentration)

## Key Applications

### 1. Cleaning and Detergent Formulations

C9-11 Pareth 6 is particularly valuable in cleaning products due to its excellent wetting and emulsifying properties. It’s commonly found in:

– Liquid dishwashing detergents
– All-purpose cleaners
– Industrial degreasers
– Hard surface cleaners

### 2. Personal Care Products

In cosmetic and personal care formulations, this surfactant serves multiple functions:

– Primary or secondary surfactant in shampoos and body washes
– Foam booster in bath products
– Emulsifier in lotions and creams
– Solubilizer for fragrances and essential oils

### 3. Industrial Applications

Beyond household and personal care, C9-11 Pareth 6 finds use in various industrial processes:

– Textile processing aids

– Agricultural formulations
– Metalworking fluids
– Paint and coating additives

## Advantages Over Other Surfactants

Compared to similar ethoxylated alcohols, C9-11 Pareth 6 offers several benefits:

– Balanced hydrophilic-lipophilic properties
– Good compatibility with other surfactants
– Lower irritation potential than higher EO variants
– Excellent biodegradability profile
– Cost-effective performance

## Safety and Handling Considerations

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

– Wear appropriate personal protective equipment when handling concentrated forms
– Store in well-ventilated areas away from strong oxidizers
– Avoid prolonged skin contact with undiluted product
– Follow local regulations for disposal

## Environmental Profile

C9-11 Pareth 6 demonstrates favorable environmental characteristics:

– Readily biodegradable under aerobic conditions
– Low bioaccumulation potential
– Low toxicity to aquatic organisms at typical use concentrations

## Future Outlook

As formulators continue to seek effective yet environmentally responsible surfactants, C9-11 Pareth 6 remains a versatile option. Ongoing research focuses on optimizing its use in green chemistry applications and developing more sustainable production methods.

For formulators seeking a balanced, mid-range ethoxylated alcohol surfactant, C9-11 Pareth 6 offers an excellent combination of performance, safety, and environmental characteristics across multiple applications.