Model NO.: T107159
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 |
1309 Isotridecyl Alcohol Polyoxyethylene Ether is a higher-ethoxylate grade of the isotridecanol ethoxylate family, classified as a nonionic surfactant. It is manufactured by reacting isotridecyl alcohol (a branched C13 alcohol) with a greater number of ethylene oxide moles compared to lower-numbered grades. The product is registered under CAS number 69011-36-5 and EINECS number 500-241-6. Its molecular formula is C₁₃H₂₇O(CH₂CH₂O)ₙOH, where n represents the average ethylene oxide addition number. The 1309 grade is characterized by a cloud point range of 55.0°C to 59.0°C, indicating a higher degree of ethoxylation than the 1303 grade.
Property | Value |
|---|---|
Water content % | ≤0.2 |
pH value (1% sample in DMW) | 5.0-7.0 |
Cloud point °C | 55.0-59.0 |
Color (APHA) | ≤30 |
Appearance (25°C) | White cloudy liquid, No mechanical impurities |
The 1309 grade distinguishes itself through its higher cloud point of 55.0°C to 59.0°C. Cloud point is the temperature at which a nonionic surfactant solution begins to turn cloudy as the polyethylene oxide chain loses hydration and the surfactant separates from the aqueous phase. The higher cloud point of 1309 means the surfactant retains its water solubility and surface-active properties at elevated process temperatures where lower-ethoxylate grades would phase-separate.
This temperature tolerance makes 1309 particularly relevant for industrial processes operated at warm to moderately high temperatures, such as spray cleaning, textile dyeing, and hot-dip applications. The product maintains its wetting, dispersing, and emulsifying capabilities within its soluble temperature range. Like other isotridecyl ethoxylates, 1309 exhibits stability across acidic and alkaline pH conditions, supporting its use in diverse formulation environments.
The branched structure of the isotridecyl hydrophobic tail contributes to low surface tension and good wetting performance on difficult-to-wet surfaces. The longer polyethylene oxide chain in the 1309 grade provides enhanced hydrophilicity and water solubility at higher temperatures compared with lower EO grades.
1309 isotridecyl alcohol ethoxylate is used in industrial cleaning formulations designed for operation at elevated temperatures, such as spray-in-air cleaners, CIP (clean-in-place) systems, and ultrasonic cleaning baths. Its higher cloud point allows the surfactant to remain dissolved and active at process temperatures where lower-ethoxylate grades would lose solubility. The wetting and emulsifying properties of 1309 support the removal of stubborn soils, heavy greases, and carbonized residues from metal parts, machinery, and process equipment.
In pigment and filler dispersion processes, 1309 functions as a wetting and dispersing aid. It helps reduce the surface tension of aqueous systems, improving the wetting of pigment surfaces and facilitating the breakdown of agglomerates during milling and dispersion operations. This can lead to shorter dispersion times and more stable pigment concentrates. The product is also used in paper and coating formulations as a wetting agent to improve substrate penetration and coating uniformity.
The 1309 grade finds application in textile dyeing and finishing processes that operate at elevated temperatures. In exhaust dyeing systems, it can serve as a leveling agent and wetting agent, promoting uniform dye distribution across fiber surfaces. Its stability at higher temperatures supports consistent performance throughout the dye cycle. In finishing operations, it may be used as an emulsifier for silicone and fluorochemical finishes, helping to maintain bath stability during padding and curing steps.
In agricultural chemical formulations, 1309 can be used as a dispersant and emulsifier for suspension concentrates and emulsifiable concentrates. Its higher cloud point provides formulation stability under warm-temperature storage and application conditions. The surfactant helps maintain uniform dispersion of solid active ingredients and supports consistent spray characteristics under field conditions.
The 1309 and 1303 grades of isotridecyl alcohol ethoxylate share the same CAS number (69011-36-5) and chemical class but differ in ethylene oxide content and resulting performance properties. The primary distinction is the cloud point: 1309 measures 55.0°C to 59.0°C, while 1303 measures 49.0°C to 52.0°C. This difference affects the temperature range in which each grade remains water-soluble and fully active.
1303 is generally selected for applications at or near ambient temperature where emulsification and moisturizing properties are prioritized, such as in personal care products, room-temperature cleaning, and standard textile pre-treatment. 1309 is preferred for processes operating at higher temperatures where sustained solubility and activity are required, including high-temperature cleaning, hot dyeing, and warm-process dispersion. Formulators often test both grades to determine which provides optimal performance for their specific process conditions and performance targets.
The cloud point of nonionic surfactants increases with the length of the polyethylene oxide chain. The 1309 grade contains more ethylene oxide units per molecule than the 1303 grade, resulting in a more hydrophilic structure and a higher cloud point temperature range (55.0°C to 59.0°C vs. 49.0°C to 52.0°C).
Yes, 1309 can be used as a standalone nonionic surfactant in many applications. It is also commonly blended with anionic surfactants, amphoteric surfactants, or other nonionic grades to tailor specific performance characteristics such as foam profile, detergency, or emulsion stability.
When stored in sealed containers under recommended conditions (cool, dry area, 10°C to 40°C), the product has a typical shelf life of 24 months from the date of manufacture. Each batch is supplied with a Certificate of Analysis specifying production date and test results.
The 1309 grade is classified as industrial grade. For food-contact or food-processing applications, formulators should verify regulatory compliance for the specific use case and jurisdiction, and may need to consider food-grade surfactant alternatives or ensure that usage levels and migration limits meet applicable regulations.
