Octadecylpolyoxyethylene Ether AC-1815 (CAS No.: 26635-75-6) appears as a white to light yellow waxy solid or paste (melting point 30~40°C). It is a special nonionic surfactant that exhibits nonionic characteristics under neutral or alkaline conditions, while it can show cationic characteristics under acidic conditions. Its HLB value is about 14~15, easily soluble in water and organic solvents, with good chemical compatibility and wide applicability.
Before use, it is recommended to heat the product to 40~50°C to soften or melt it for easier taking and feeding. When feeding, it can be directly added to warm water (40~60°C) and stirred to dissolve, preparing a mother liquor of a certain concentration, then added to the main system according to the formula ratio. It can also be mixed with oily components in the formulation before emulsification with the water phase. When used in an acidic system, AC-1815 converts to a cationic form, significantly enhancing its adsorption and conditioning softening properties.
Since the Guoli Chemical product database does not include unified recommended dosage data, the following typical reference dosages in various fields are industry empirical values. The actual optimal dosage needs to be optimized by users through orthogonal experiments or gradient experiments based on their own formulation system and process conditions.
| Parameter Name | Parameter Value | Parameter Name | Parameter Value |
|---|---|---|---|
| Appearance | Light yellow waxy solid/paste | HLB Value | 14~15 |
| Active Content | ≥99% | Amine Value | 60~75 mgKOH/g |
| Cloud Point (1% Aqueous Solution) | ≥90℃ | Hydroxyl Value | 60~75 mgKOH/g |
| pH Value (1% Aqueous Solution) | 6.0~8.0 | Melting Point | 30~40℃ |
| Surface Tension (0.1%) | About 30 mN/m | Moisture | ≤0.5% |
| Critical Micelle Concentration | 10~30 mg/L | Flash Point | ＞100℃ |
| Density (25℃) | 0.95~1.05 g/cm³ | Solubility | Easily soluble in water and organic solvents |
Textile Dyeing Leveling Agent: It is recommended to be compounded at 5%~15% of the total formulation. AC-1815 can be compounded with other nonionic/anionic surfactants, solvents, etc., to prepare a high-temperature leveling agent mother liquor. During dyeing, add 0.5~2 g/L (based on dye liquor volume) to the dyebath, utilizing its excellent migration and retardation properties to reduce color spots and color differences, improving dyeing uniformity.
Synthetic Fiber Antistatic Agent/Oil: As a smoothing and bundling component in polyester, acrylic, and nylon oil formulations, it is recommended to account for 3%~10% of the oil formulation, compounded with mineral oil, ester smoothing agents, and other emulsifiers. The oil pick-up rate should be controlled at 0.3%~1.0% (based on fiber weight), effectively reducing the friction coefficient between fibers and eliminating static buildup.
Metalworking Fluid Emulsifier and Rust Inhibitor: In emulsified oil and semi-synthetic cutting fluid formulations, the recommended dosage is 3%~8% of the total formulation. Used synergistically with sodium petroleum sulfonate, fatty acid amides, etc., it can form a stable oil-in-water emulsion and form a directional adsorption film on metal surfaces, providing good rust and corrosion protection.
Pesticide Emulsifier: In emulsifiable concentrate (EC) and emulsion in water (EW) formulations, the recommended dosage is 5%~12% of the total preparation. It can be used together with anionic emulsifiers (such as calcium salts) to enable the pesticide active ingredient to spontaneously emulsify into a stable emulsion upon dilution, enhancing field application efficacy.
Daily Chemical Auxiliary: In shampoo, body wash, conditioner, and other formulations, as an auxiliary emulsifier and viscosity modifier, it is recommended to add 0.5%~3.0%. Note that this product exhibits cationic properties under acidic pH conditions, avoid direct compounding with high-concentration anionic surfactant systems to prevent precipitation.
Paint and Ink Dispersant: When used as a pigment wetting and dispersing agent, it is recommended to add 0.2%~2.0% based on the weight of pigment or filler. Adding during the grinding stage yields the best effect, effectively deflocculating, preventing floating color and flooding, and improving tinting strength and storage stability.