Isooctanol penetrant OE-35 is a nonionic surfactant with an HLB value of about 13.5, penetration power ≤10 seconds, cloud point >100°C, active content ≥99%, and excellent overall physicochemical properties, suitable for efficient penetration and wetting requirements in multiple fields.
Detailed Description
Isooctanol penetrant OE-35 (CAS No.: 68439-51-0), chemical name isooctanol polyoxyethylene (35) ether, is a nonionic surfactant starting from isooctanol with an ethylene oxide addition number of about 35. This product appears as a colorless to slightly yellow liquid or paste, with a melting point <-10°C, liquid at room temperature, viscosity about 120-150 mPa·s, density about 1.06 g/cm³. It is easily soluble in water, with a pH value of 5.0~7.0 for a 1% aqueous solution, neutral to weakly acidic, and has good compatibility and chemical stability with acids, alkalis, and hard water.
The core performance indicators of this product include: HLB value of 13.5, belonging to a highly hydrophilic surfactant; cloud point >100°C, maintaining good solubility and surface activity in high-temperature aqueous systems; surface tension about 30 mN/m; critical micelle concentration (CMC) in the range of 0.01~0.1 g/L, indicating it can effectively reduce interfacial tension at very low concentrations; penetration power (standard canvas sedimentation method) ≤10 seconds, reflecting its rapid penetration and wetting ability. In addition, the hydroxyl value is between 30~40 mgKOH/g, moisture content ≤0.5%, acid value, iodine value, and saponification value are all ≤1, indicating high purity and few by-products.
Technical Parameters
The following are the main physicochemical technical parameters of isooctanol penetrant OE-35 (data source: Guoli Chemical Product Database).
Basic Physical Properties
| Parameter Item | Indicator Value | Unit/Description |
|---|
| Chemical Name | Isooctanol polyoxyethylene (35) ether | Alias: 2-ethylhexanol polyoxyethylene ether |
| CAS No. | 68439-51-0 | — |
| Molecular Formula | C8H17O(C2H4O)nH, n=35 | — |
| Molecular Weight | Approx. 1670 | — |
| Ionic Type | Nonionic | — |
| Appearance | Colorless to slightly yellow | Liquid or paste |
| Color (APHA) | Approx. 130 | — |
| Density | Approx. 1.06 | g/cm³ |
| Melting Point | <-10 | °C |
| Refractive Index | Approx. 1.457 | — |
| Flash Point | >200 | °C |
Surface Activity and Performance Parameters
| Parameter Item | Indicator Value | Unit/Description |
|---|
| HLB Value | 13.5 | Strongly hydrophilic |
| Cloud Point | >100 | °C |
| Surface Tension | Approx. 30 | mN/m |
| Critical Micelle Concentration (CMC) | 0.01~0.1 | g/L |
| Penetration Power | ≤10 | Seconds (standard canvas sedimentation method) |
| Foaming Characteristics | Low foam | — |
| Alkali Resistance | Good | — |
| Solubility | Easily soluble in water | — |
| Hygroscopicity | Hygroscopic | — |
Chemical Index Parameters
| Parameter Item | Indicator Value | Unit/Description |
|---|
| Active Content | ≥99 | % |
| Solid Content | ≥99 | % |
| Moisture | ≤0.5 | % |
| pH Value (1% Aqueous Solution) | 5.0~7.0 | — |
| pH Value (5% Aqueous Solution) | 5.0~7.0 | — |
| Hydroxyl Value | 30~40 | mgKOH/g |
| Acid Value | ≤1 | mgKOH/g |
| Iodine Value | ≤1 | gI2/100g |
| Saponification Value | ≤1 | mgKOH/g |
| Amine Value | ≤0.5 | mgKOH/g |
| Tertiary Amine Content | ≤0.1 | % |
| Free Alcohol | ≤1 | % |
| Unsaturation | None | — |
| Free Phosphoric Acid | None | — |
| Monoester/Diester Content | None | — |
| Combined Phosphorus | None | — |
Viscosity and Safety/Environmental Parameters
| Parameter Item | Indicator Value | Unit/Description |
|---|
| Kinematic Viscosity | Approx. 120 | mPa·s |
| Low Shear Viscosity | Approx. 150 | mPa·s |
| Chemical Stability | Stable under normal conditions | <
