Home » Products » Surface Active Agent » Isotridecyl Alcohol Polyoxyethylene Ether » 1308 / Isotridecyl Alcohol Polyoxyethylene Ether CAS: 69011-36-5 Soluble in water

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1308 / Isotridecyl Alcohol Polyoxyethylene Ether CAS: 69011-36-5 Soluble in water

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TICHEM IS1308 isotridecyl alcohol polyoxyethylene ether (CAS 69011-36-5) is an 8-mole EO nonionic surfactant produced under ISO 9001 standards with 99.5% purity. Featuring a 47-50°C cloud point and branched C13 structure, it provides fast wetting, penetration and dispersing performance for ambient-temperature industrial cleaning, textile processing and agricultural formulations. Each batch includes a COA for consistent formulation results.
Availability:

Model NO.: T107518

Composition

Organic

Type

Dispersant

Flux Type

Surfactant

Usage

Dissolved

Grade

Industrial Grade

Purity

99.5%

MOQ

1ton

Appearance

Colorless Transparent Liquid

Trademark

TICHEM

Transport Package

Iron Drum/IBC/ISO Tank

HS Code

3402900090

Origin

China

Isotridecyl alcohol polyoxyethylene ether, commonly known as trideceth, is a non-ionic surfactant produced through the ethoxylation of isotridecyl alcohol. The product designated as IS1308 represents a specific grade within this product family, with an average of approximately 8 moles of ethylene oxide (EO) per mole of alcohol. The CAS number 69011-36-5 applies to the broader category of isotridecyl alcohol ethoxylates, covering products with different degrees of ethoxylation.

The molecular formula for IS1308 is C₁₃H₂₇O(CH₂CH₂O)ₙH, where n approximates 8. This structure creates an amphiphilic molecule with a hydrophobic isotridecyl chain (C13 branched alkyl group) and a hydrophilic polyethylene oxide chain. The HLB (Hydrophilic-Lipophilic Balance) value of IS1308 falls in the range of approximately 12-13, positioning it as a versatile emulsifier and wetting agent suitable for oil-in-water systems.

Molecular Structure and EO Degree

The degree of ethoxylation directly determines the physical and functional properties of the surfactant. With approximately 8 EO units, IS1308 exhibits a cloud point of 47.0-50.0°C (measured in 1% aqueous solution), which indicates the temperature at which the surfactant loses water solubility and the solution turns cloudy. This relatively low cloud point makes IS1308 particularly suitable for applications operated at ambient to moderately elevated temperatures.

IS1308 is classified as a non-ionic surfactant, meaning it carries no electrical charge in solution. This characteristic allows it to remain effective across a broad pH range and makes it compatible with both anionic and cationic surfactants in formulated products. The branched C13 alkyl chain provides enhanced wetting and penetrating properties compared to linear alcohol ethoxylates of similar molecular weight.

Technical Specifications for Isotridecyl Alcohol Polyoxyethylene Ether IS1308

The following table presents the technical specifications for IS1308, with each parameter measured according to standardized test methods.

Property

Value

Water content %

≤0.2

PH value (1% sample in DMW)

5.0-7.0

Cloud point °C

47.0-50.0

Color (APHA)

≤30

Appearance (25°C)

White cloudy liquid, No mechanical impurities

Test Methods and Quality Standards

Each parameter in the specification is determined using established analytical methods. Water content is measured by Karl Fischer titration in accordance with ISO 760. The pH value is determined using a calibrated pH meter on a 1% solution prepared in demineralized water. Cloud point measurement follows ISO 1065 methodology, where a 1% aqueous solution is gradually heated until cloudiness appears, then cooled until the solution clears, with the average recorded as the cloud point.

Color is measured using the APHA (Hazen) scale according to ISO 2211, with values of 30 and below indicating a light-colored product with minimal impurities. The appearance assessment at 25°C confirms the product's physical state and the absence of visible particulate contamination. Each batch undergoes quality control testing before release, and a Certificate of Analysis (COA) is available upon request for commercial procurement.

Key Performance Characteristics of Isotridecyl Alcohol Ethoxylate IS1308

Surface Activity and Wetting Properties

IS1308 functions as an effective wetting agent and dispersant due to its ability to reduce surface tension at liquid-solid and liquid-liquid interfaces. The branched isotridecyl chain provides rapid spreading and penetration on various surfaces, including metal, textile fibers, and hard surfaces. This property is particularly valuable in industrial cleaning formulations where rapid wetting of soiled surfaces contributes to cleaning efficiency.

As a dispersant, IS1308 helps maintain solid particles in suspension within liquid systems. This capability finds application in pigment dispersions, agricultural spray formulations, and process water treatment. The non-ionic nature of the surfactant ensures that its dispersing performance remains unaffected by water hardness or the presence of dissolved salts.

Chemical Stability and Compatibility

IS1308 demonstrates stability across a wide pH range, from moderately acidic to moderately alkaline conditions. This pH tolerance allows the surfactant to be incorporated into a variety of formulated products without degradation of performance. It is compatible with most anionic, cationic, and other non-ionic surfactants, providing formulators with flexibility in developing multi-component systems.

The product is soluble in water at temperatures below its cloud point and also soluble in various organic solvents, including lower alcohols, glycol ethers, and aromatic hydrocarbons. This dual solubility profile makes IS1308 suitable for both aqueous and solvent-based formulations. In terms of chemical stability, the ether linkages in the polyethylene oxide chain are resistant to hydrolysis under normal storage and use conditions.

Industrial Applications of Isotridecyl Alcohol Polyoxyethylene Ether IS1308

Industrial Cleaning Applications

In industrial cleaning formulations, IS1308 serves as a primary or co-surfactant in neutral to moderately alkaline cleaners. Its wetting and penetrating properties assist in the removal of soils, oils, and greases from metal parts, machinery, and hard surfaces. The surfactant is commonly used in spray cleaners, immersion cleaners, and ultrasonic cleaning baths operated at temperatures below the cloud point.

For commercial users in the metalworking sector, IS1308 can be found in degreasing formulations, rust removal solutions, and post-processing cleaning agents. Its compatibility with builders, chelating agents, and other additives allows for the development of concentrated cleaning products that can be diluted to use concentrations as low as 0.5-2% by weight.

Textile Processing Applications

The textile industry utilizes IS1308 in various processing stages, including wetting, scouring, and dyeing. As a wetting agent, it accelerates the penetration of processing liquors into textile fibers, reducing processing time and improving uniformity. In scouring operations, the surfactant helps remove natural waxes, oils, and sizing agents from cotton and synthetic fibers.

In dyeing applications, IS1308 can function as a leveling agent, promoting the uniform distribution of dye molecules across the fiber surface. Its non-ionic character minimizes interactions with anionic dyes, making it suitable for use in reactive dyeing of cotton fibers. The surfactant also finds use in finishing processes where it improves the penetration of finishing chemicals.

Agricultural Formulation Applications

In agricultural chemistry, IS1308 serves as an adjuvant in pesticide and herbicide formulations. As an emulsifier, it helps stabilize oil-in-water emulsions of active ingredients that are not readily soluble in water. The surfactant also enhances the wetting and spreading of spray solutions on leaf surfaces, improving coverage and potentially increasing the efficacy of the active ingredient.

For enterprise customers in the agrochemical sector, IS1308 can be incorporated into emulsifiable concentrates (EC), suspension concentrates (SC), and microemulsion formulations. Its compatibility with a wide range of active ingredients and other formulation additives makes it a versatile component in agricultural chemical development.

Packaging, Storage and Handling

Available Packaging Sizes

IS1308 is available in multiple packaging options to accommodate different order sizes and application requirements. Standard packaging includes 200-liter iron drums with a net weight of approximately 200 kg per drum, 1000-liter IBC (Intermediate Bulk Container) totes with a net weight of approximately 1000 kg, and ISO tank containers for bulk shipments. The minimum order quantity is 1 ton.

The product should be stored in sealed containers in a cool, dry, well-ventilated area, away from direct sunlight and sources of heat. When stored under recommended conditions, the shelf life is typically 24 months from the date of manufacture. As with all chemical products, appropriate personal protective equipment (PPE) should be worn when handling the product, and safety data sheets (SDS) should be consulted for detailed handling and emergency procedures.

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FAQ About Isotridecyl Alcohol Ethoxylate IS1308

What is the difference between IS1308 and other grades of isotridecyl alcohol ethoxylate?

IS1308 is differentiated primarily by its degree of ethoxylation, with approximately 8 EO units, resulting in a cloud point of 47.0-50.0°C. Grades with higher EO numbers have higher cloud points and greater water solubility, while lower EO grades are more lipophilic. The selection of grade depends on the application temperature, required HLB, and specific performance needs.

Is IS1308 compatible with other surfactants in formulated products?

Yes, as a non-ionic surfactant, IS1308 is compatible with most anionic, cationic, and amphoteric surfactants, as well as other non-ionic surfactants. This compatibility allows formulators to blend IS1308 with other surfactants to achieve specific performance characteristics, such as enhanced foam control, improved detergency, or better emulsification properties.

What is the typical use concentration for IS1308 in industrial cleaning applications?

Typical use concentrations range from 0.5% to 5% by weight, depending on the application method and soil load. For spray cleaning applications, concentrations of 0.5-2% are common, while immersion cleaning may require 1-5%. For concentrated products intended for dilution, IS1308 can be incorporated at levels of 5-20% of the concentrate formulation.

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