When using L-62 Poloxamer, special attention should be paid to protecting the eyes and skin, and it should be stored sealed in a cool, ventilated place to ensure operational safety.
Detailed Description
L-62 Poloxamer (Poloxamer 182) is a low-toxicity, readily biodegradable nonionic surfactant. Although its overall hazard is low during use, basic chemical handling procedures must still be followed. According to GHS classification, this product falls under Skin Irritation Category 2 (H315) and Serious Eye Damage/Eye Irritation Category 2 (H319), meaning direct contact may cause skin discomfort or severe eye irritation. Therefore, the key protective measure is to avoid contact with eyes and skin.
In practical applications, this product is a colorless to slightly yellow transparent oily liquid at room temperature, with a slight characteristic odor and hygroscopicity, making it easy to pour and pump. Due to its good chemical stability, it maintains stable performance under acidic, alkaline, and hard water conditions, and is not easily decomposed under normal conditions. However, because of its liquid form, there is a risk of splashing during industrial batching and transfer. Operators must develop the habit of thoroughly washing exposed skin, such as hands, with mild soap and clean water immediately after operation. Work clothes should be stored separately and washed regularly.
Technical Parameters
Understanding the basic physicochemical parameters of the product helps assess usage risks:
| Parameter Item |
Typical Value/Range |
| Appearance (25°C) |
Colorless to slightly yellow transparent liquid |
| Flash Point (COC) |
Approx. 240°C |
| Kinematic Viscosity (25°C) |
Approx. 400 mm²/s |
| pH Value (1% Aqueous Solution) |
5.0 - 7.5 |
| Pour Point |
Approx. -20°C |
| Acute Oral Toxicity LD₅₀ (Rat) |
> 5,000 mg/kg (Practically Non-toxic) |
Application Recommendations
Depending on the application area, specific usage recommendations are as follows:
- Industrial Defoamer and Fermentation Defoamer: When used directly as a low-foaming base component or added on-site, it should be pre-diluted and dispersed to avoid locally high concentrations. Its HLB value is approximately 7, and cloud point is about 32°C. In systems above the cloud point temperature, its defoaming or foam-inhibiting efficacy may change, requiring experimental verification.
- Automatic Dishwasher Rinse Aid and Hard Surface Cleaner: Recommended usage is typically 1%-5% of the total formulation, leveraging its low foam and high wetting properties. Preparation should be done in a well-ventilated workshop, avoiding prolonged open operations to prevent moisture absorption that may cause fluctuations in effective content.
- Agricultural Chemicals and Emulsion Polymerization: When used as a pesticide emulsifier or polymerization emulsifier, phase behavior studies should be conducted based on the active ingredient or monomer type to determine the optimal dosage. During operation, especially in large-scale feeding, safety goggles conforming to EN 166 standards and chemical-resistant gloves must be worn to prevent splashes.
- Metalworking Fluids: This product serves as a low-foaming wetting agent in cutting fluids and grinding fluids, directly contacting the metalworking environment. Since processing fluids may be recirculated and contact high-temperature metals, although the product itself has a high flash point, attention should be paid to avoid cross-contamination with other low-flash-point additives that may pose fire risks.
Precautions
- Personal Protective Equipment is the Bottom Line: Whenever opening drums, repackaging, sampling, or mixing, safety goggles and appropriate chemical-resistant gloves must be worn. Do not wash hands with solvent.
- Eye First Aid is the Golden 15 Minutes: If accidental eye contact occurs, immediately rinse with room-temperature clean water, holding the eyelids open, for at least 15 minutes, and seek medical attention immediately, without delay.
- Three "Keep Away" Principles for Storage: Store in a cool (5-30°C), dry place, keep the container tightly sealed, away from strong oxidizers, strong acids and bases, and other incompatible substances, and away from heat sources and open flames.
- Leak Treatment: This product is a viscous liquid; spills will make the floor very slippery. Use inert absorbent materials (such as sand or earth) to cover and absorb, collect in a covered container and dispose of according to regulations. Do not flush into drains.
- Packaging and Shelf Life: Supplied packaging typically includes 50 kg/200 kg plastic drums or IBC totes. When stored in original sealed containers under recommended conditions, performance remains stable within the shelf life.
