Heliwet FA 18/2 (Steareth-2)
What is Heliwet FA 18/2?
Heliwet FA 18/2 is a non-ionic surfactant belonging to the group of alcohol ethoxylates. The product is based on a C18 fatty alcohol (stearyl alcohol) that has been ethoxylated with an average of 2 moles of ethylene oxide.
The INCI name of Heliwet FA 18/2 is Steareth-2.
Due to its low degree of ethoxylation, Heliwet FA 18/2 has a relatively lipophilic character. This makes it particularly suitable as:
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A water-in-oil (W/O) emulsifier
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A co-emulsifier in rich emulsions
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A structure and texture enhancer
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A stabilizing component in ointments and creams
Heliwet FA 18/2 is used in cosmetic, pharmaceutical, and technical formulations where a rich and stable emulsion structure is required.
Packaging
- Bulk
- IBC
- Drum
- Can
CAS
9005-00-9
INCI-name
Steareth-2
Application
- Technical
- Cosmetic
- Pharmaceutical
How is Steareth-2 produced?
Steareth-2 is produced via controlled ethoxylation of C18 fatty alcohol with an average of 2 moles of ethylene oxide.
During this process:
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Stearyl alcohol reacts with ethylene oxide
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The EO content is precisely controlled
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A non-ionic surfactant with lipophilic properties is formed
The low number of EO units determines the emulsifying behavior of the product. Compared to Steareth-20 (20 EO), Steareth-2 is significantly less hydrophilic.
Production in Europe complies with:
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REACH compliance of raw materials
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Control of residual monomers
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Consistent batch quality
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Traceability within the supply chain
How does Heliwet FA 18/2 work in a formulation?
Heliwet FA 18/2 primarily functions as a water-in-oil emulsifier or co-emulsifier.
1. Stabilization of water-in-oil emulsions
Due to its lipophilic character, Steareth-2 is mainly positioned in the oil phase. This allows it to stabilize water droplets within a continuous oil phase.
Example:
In a rich night cream, Heliwet FA 18/2 helps stabilize small water droplets in an oil-based matrix, creating a full and protective texture.
2. Co-emulsifier in O/W systems
Steareth-2 is often combined with more hydrophilic emulsifiers (such as Steareth-20) to create a stable and well-balanced emulsion system.
Example:
In a body lotion, the combination of Steareth-2 and Steareth-20 can improve stability while providing a pleasant skin feel.
3. Texture and structure enhancement
Heliwet FA 18/2 contributes to:
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Creamy viscosity
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Improved spreadability
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A protective skin feel
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Better distribution of oil-based ingredients
In ointments and dermatological preparations, it supports the consistency and stability of the final product.
In which industries is Heliwet FA 18/2 used?
Cosmetics & Personal Care
Heliwet FA 18/2 (Steareth-2) is used in:
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Creams and lotions
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Sunscreen products
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Skincare products for dry skin
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Hair conditioners
The product is suitable for labeling in accordance with the EU Cosmetics Regulation under the INCI name Steareth-2.
Pharmaceutical industry
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Dermatological ointments
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Emulsion bases for topical applications
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Protective skin formulations
In these applications, Steareth-2 is used as an excipient for emulsification and stabilization.
Technical applications
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Industrial emulsions
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Oil-based systems
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Formulations requiring water-in-oil stability
Besides Heliwet 18/2, we have other products in our range. Check it out on our insights page!
Frequently asked questions about Heliwet FA 18/2
1. What are the benefits of Heliwet FA 18/2?
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Suitable for water-in-oil emulsions
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Enhances creamy texture
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Good compatibility with other emulsifiers
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Consistent quality
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Widely applicable in cosmetic formulations
The product offers formulators flexibility when developing rich and protective formulations.
2. What is the difference between Steareth-2 and Steareth-20?
The main difference is the number of moles of ethylene oxide:
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Steareth-2 → 2 EO → lipophilic → suitable for W/O systems
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Steareth-20 → 20 EO → hydrophilic → suitable for O/W systems
The EO content therefore determines the emulsifying behavior and HLB value.
3. Is Heliwet FA 18/2 suitable for natural cosmetics?
The fatty alcohol base can be derived from plant-based sources. However, due to the ethoxylation process, the product is not considered fully natural according to certification standards such as COSMOS Natural.
For fully ethoxylate-free positioning, an alternative is required.
4. Can Heliwet FA 18/2 be used as a standalone emulsifier?
Yes, it can function independently in water-in-oil systems. In oil-in-water systems, it is usually combined with a more hydrophilic emulsifier to achieve optimal stability.
Chempri: your partner in Heliwet FA 18/2
Chempri supplies Heliwet FA 18/2 (Steareth-2) from Europe with a focus on:
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Reliable deliveries
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Consistent quality
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Technical support
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Product documentation (specifications, SDS and COA)
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Flexible batch sizes
At Chempri, we specialize in the production and supply of high-quality oleochemicals and their derivatives, including Heliwet FA 18/2. Our products are manufactured in our modern production facility and can be tailored to meet the specific requirements of our customers.
Do you have any questions or would you like to place an order directly?
Contact our sales team for more information.
