C13 Alcohol Ethoxylate E-1340 is a classic high-performance nonionic surfactant produced by the addition of isotridecanol with 13 moles of ethylene oxide. Its unique branched hydrophobic structure gives it outstanding wetting and penetrating abilities as well as emulsifying and dispersing performance. It also exhibits good chemical stability under acidic, alkaline, and hard water conditions, making it an indispensable auxiliary component in many industrial formulations.
This product has particularly mature applications in the textile printing and dyeing industry. In the pretreatment stage, it can be used as a scouring agent and penetrant to effectively remove natural impurities such as wax and pectin from cotton fibers; in the dyeing stage, it acts as a leveling agent to ensure uniform dye uptake and prevent uneven coloring. In the field of industrial cleaning, it effectively emulsifies and disperses various grease and dirt, suitable for hard surface cleaning and degreasing of metal parts, with the advantages of low foaming and easy rinsing. In addition, it is widely used in leather degreasing, paper deinking, pesticide emulsification, and coating wetting and dispersion.
In terms of product form, E-1340 appears as a colorless to slightly yellow transparent liquid or paste at room temperature, with a moderate HLB value (approximately 13~14) and good hydrophilicity. It can be used directly or compounded with other surfactants, offering strong formulation adaptability. Special attention should be paid to the fact that this product poses a risk of serious eye damage (H318), so protective goggles and other protective equipment must be worn during operation.
| Parameter | Description |
|---|---|
| Chemical Name | Isotridecanol polyoxyethylene (13) ether |
| CAS Number | 9043-30-5 |
| Product Type | Nonionic surfactant |
| EO Number | 13 |
| Appearance | Colorless to slightly yellow transparent liquid or paste |
| HLB Value (Reference) | Approximately 13~14 |
| Ionic Type | Nonionic |
| Chemical Stability | Resistant to acids, alkalis, and hard water |
| Flash Point | >150°C |
| Acute Oral Toxicity (LD50) | 300～2000 mg/kg |
| Biodegradability | Rapidly biodegradable (BOD/COD >60%, 28 days) |
1. Textile Printing and Dyeing Auxiliaries — Used as scouring agent, penetrant, and leveling agent. In pretreatment formulations, the recommended dosage is 5%~15%, effectively improving fabric whiteness and capillary effect; when used as a leveling agent in dyeing, the recommended dosage is 0.5~2 g/L to prevent uneven coloring and streaks.
2. Industrial and Institutional Cleaning Agents — Used for hard surface cleaning and metal parts degreasing. It can be compounded with anionic surfactants (such as LAS, AES) with a recommended dosage of 3%~10%, providing excellent oil removal performance and easy rinsing characteristics.
3. Leather Processing — Used as a main degreasing agent component in the degreasing process, recommended dosage 0.5%~2% (based on hide weight); in fatliquoring emulsification, it serves as an emulsifying carrier for the fatliquoring agent, promoting uniform oil penetration and improving the softness of the finished leather.
4. Papermaking Chemicals — In the deinking process of waste paper, it promotes the separation of ink from fibers and prevents ink redeposition, recommended dosage 0.1%~0.5%; it can also be used for cleaning and maintenance of paper machine felts.
5. Water-Based Coatings and Inks — Used as a wetting and dispersing agent for pigments and fillers, recommended dosage 0.5%~2% of the pigment amount, effectively preventing flocculation and sedimentation, and improving storage stability of the system.
6. Agricultural Chemicals — Used for preparing emulsifiers in pesticide emulsifiable concentrates (EC) and oil-in-water emulsions (EW), generally used in combination with anionic emulsifiers (such as calcium salts), recommended total emulsifier dosage 5%~15%; in tank-mix adjuvants, it can enhance wetting and spreading of the spray liquid, added at 0.05%~0.2%.
7. Metalworking Fluids — Provides lubrication and cleaning effects in semi-synthetic/full synthetic cutting fluids, recommended dosage 3%~8%; in alkaline cleaners, it acts as a penetrating and emulsifying component to quickly remove processing oils from metal surfaces.
8. Emulsion Polymerization — Used as an emulsifying stabilizer in emulsion polymerization systems such as acrylates and styrene, can be used alone or compounded with anionic emulsifiers, recommended dosage 1%~4% of the monomer weight, beneficial for obtaining a polymer latex with fine and uniform particle size distribution.