Ethoxylated C9-11 Alcohol with 6 Moles of Ethylene Oxide

# Ethoxylated C9-11 Alcohol with 6 Moles of Ethylene Oxide (C9-11 Pareth 6)

## Introduction to C9-11 Pareth 6

C9-11 Pareth 6 is a nonionic surfactant derived from the ethoxylation of C9-11 fatty alcohols with 6 moles of ethylene oxide. This chemical compound belongs to the family of alcohol ethoxylates, which are widely used in various industrial and consumer applications due to their excellent surface-active properties.

## Chemical Properties

The molecular structure of C9-11 Pareth 6 consists of:

– A hydrophobic C9-11 fatty alcohol chain
– A hydrophilic polyoxyethylene (6 EO) chain

This amphiphilic structure gives the compound its surfactant properties, allowing it to reduce surface tension between different phases (liquid-liquid or liquid-solid).

Key properties include:

– HLB value: Approximately 12-13 (moderate hydrophilicity)
– Appearance: Clear to slightly hazy liquid
– Solubility: Soluble in water and many organic solvents
– Biodegradability: Readily biodegradable under aerobic conditions

## Manufacturing Process

The production of C9-11 Pareth 6 involves:

1. Selection of C9-11 fatty alcohol feedstock
2. Purification of the alcohol
3. Ethoxylation reaction with ethylene oxide (6 moles)
4. Neutralization and purification of the final product

The ethoxylation process is typically catalyzed by a base (such as potassium hydroxide) under controlled temperature and pressure conditions.

## Applications

### 1. Cleaning Products

C9-11 Pareth 6 is extensively used in:

– Liquid dishwashing detergents
– All-purpose cleaners
– Industrial and institutional cleaners
– Hard surface cleaners

Its excellent wetting and emulsifying properties make it particularly effective in removing oily soils.

### 2. Personal Care

In cosmetic formulations, it serves as:

– Mild surfactant in shampoos and body washes
– Emulsifier in lotions and creams
– Foam booster in personal care products

### 3. Industrial Applications

Other uses include:

– Textile processing aids
– Agricultural formulations
– Metal working fluids
– Paint and coatings additives

## Advantages

The benefits of using C9-11 Pareth 6 include:

– Good compatibility with other surfactants
– Low irritation potential compared to higher EO products
– Effective at lower temperatures
– Stable performance across a wide pH range
– Cost-effective performance

## Safety and Environmental Considerations

### Handling Precautions

– Avoid prolonged skin contact
– Use protective gloves when handling concentrated product
– Ensure adequate ventilation in work areas

### Environmental Profile

– Readily biodegradable (OECD 301 standards)
– Low bioaccumulation potential
– Low toxicity to aquatic organisms

## Regulatory Status

C9-11 Pareth 6 is:

– Approved for use in consumer products in most regions
– Listed in various international chemical inventories
– Compliant with major cosmetic regulations when used appropriately

## Conclusion

C9-11 Pareth 6 represents a versatile, mid-range ethoxylate that balances performance with environmental considerations. Its moderate HLB value and good surfactant properties make it a popular choice for formulators across multiple industries. As with all chemical products, proper handling and use according to manufacturer recommendations are essential for safe and effective application.