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# Ethoxylated C9-11 Alcohol with 6 EO Units: A Versatile Surfactant
## 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 that has gained significant importance in various industrial and consumer applications. This chemical compound belongs to the family of alcohol ethoxylates, which are widely used for their excellent surface-active properties.
The “C9-11” in its name refers to the carbon chain length of the alcohol portion, which consists of a mixture of 9 to 11 carbon atoms. The “6 EO Units” indicates that each alcohol molecule has been reacted with an average of 6 ethylene oxide (EO) units, creating a hydrophilic (water-loving) portion of the molecule.
## Chemical Structure and Properties
The molecular structure of C9-11 Pareth 6 consists of two distinct parts:
– A hydrophobic tail (the C9-11 alcohol chain)
– A hydrophilic head (the ethoxylate chain with 6 EO units)
This amphiphilic structure gives the compound its surfactant properties, allowing it to reduce surface tension between liquids or between a liquid and a solid. The balance between the hydrophobic and hydrophilic portions makes it particularly effective in many applications.
Key physical properties include:
– Appearance: Typically a clear to slightly hazy liquid
– Solubility: Soluble in water and many organic solvents
– HLB value: Approximately 12-13 (moderate hydrophilicity)
– pH: Neutral in aqueous solutions
## Manufacturing Process
The production of C9-11 Pareth 6 involves the ethoxylation of C9-11 alcohols with ethylene oxide in the presence of a catalyst. The process typically follows these steps:
– Purification of the C9-11 alcohol feedstock
– Introduction of the alcohol and catalyst into a reaction vessel
– Controlled addition of ethylene oxide under specific temperature and pressure conditions
– Neutralization and purification of the final product
The reaction is carefully controlled to achieve the desired average of 6 ethylene oxide units per alcohol molecule, though there will always be some distribution of EO chain lengths in the final product.
## Applications in Various Industries
### 1. Household and Industrial Cleaning
C9-11 Pareth 6 is extensively used in cleaning formulations due to its excellent wetting, emulsifying, and detergent properties. It appears in:
– Liquid dishwashing detergents
– All-purpose cleaners
– Hard surface cleaners
– Industrial degreasers
### 2. Personal Care Products
In cosmetics and personal care, this surfactant finds application in:
– Shampoos and body washes
– Facial cleansers
– Shaving products
– Makeup removers
Its mildness and good foaming characteristics make it suitable for skin-contact applications.
### 3. Textile Processing
The textile industry utilizes C9-11 Pareth 6 for:
– Scouring and cleaning of fibers
– Dyeing assistants
– Fabric softeners
– Antistatic agents
### 4. Agricultural Formulations
In agrochemicals, it serves as:
– Wetting agent in pesticide formulations
– Emulsifier for crop protection products
– Adjuvant to improve spray coverage
### 5. Other Industrial Applications
Additional uses include:
– Paper and pulp processing
– Metal working fluids
– Paint and coatings additives
– Oilfield chemicals
## Performance Characteristics
C9-11 Pareth 6 offers several performance advantages:
– Excellent wetting and spreading properties
– Good emulsification of oils and greases
Keyword: C9-11 Pareth 6
– Moderate foam generation (useful where excessive foam is undesirable)
– Compatibility with a wide range of other surfactants
– Stability in both acidic and alkaline formulations
– Biodegradability under appropriate conditions
## Environmental and Safety Considerations
As with
