When using polyether L-61 (CAS No.: 25322-69-4), if any issues such as abnormal product performance, formulation matching difficulties, or accidental contact occur, the handling procedure should follow the principle of "Safety first, emergency response, seek help promptly". First, quickly determine the nature of the problem: if it involves safety incidents such as inhalation, skin or eye contact, spills, etc., immediate first aid or containment must be carried out according to Section 4 "Emergency Treatment Measures" of the product's Safety Data Sheet (SDS), without delay. After ensuring personnel and environmental safety, proceed with troubleshooting and consultation for process or application-level issues.
For application technical issues such as poor emulsification, reduced foam suppression ability, or sedimentation in the dispersion system, they are often related to the formulation system, process conditions, or interactions between raw materials. Common troubleshooting directions include: check whether the product has been stored under recommended conditions (5–40°C, sealed, dry) to avoid deterioration due to prolonged exposure to high temperature or humidity; verify the pH range of the working solution, water hardness, and the presence of strong oxidizers or strong acids/alkalis that may be incompatible with the product; confirm the addition sequence, dosage (usually requires optimization through experiments), and shear conditions during mixing are appropriate.
Ways to obtain official technical support from Guoli Chemical: The most direct and efficient method is to contact the sales manager or regional business representative who serves you; they can promptly relay your specific issues to the technical team. You can also call Guoli Chemical's official customer service hotline (please refer to the purchase contract, product packaging, or company website for the specific number). The customer service specialist will record your product batch number, application scenario, and fault description, and transfer the case to an application technical engineer for one-on-one diagnosis and analysis. For complex formulation challenges, Guoli Chemical can provide in-depth support services such as sample retesting, formulation recommendations, or on-site technical exchanges.
Before contacting technical support, it is recommended that you prepare the following key product parameter information to help engineers quickly locate the problem:
| Parameter Item | Typical Value/Specification | Reference Significance |
|---|---|---|
| Appearance | Colorless to light yellow transparent liquid | Abnormal turbidity or layering may indicate product contamination or deterioration |
| Hydroxyl Value | Approx. 28 mg KOH/g | Key quality indicator, affects reactivity and emulsifying performance |
| pH Value (1% aqueous solution) | 5.0–7.5 | Deviation from this range may affect formulation stability |
| Moisture Content | ≤0.5% | Excessive moisture will interfere with polyurethane foaming reaction and other applications |
| Kinematic Viscosity (25°C) | Approx. 400 mm²/s | Significant viscosity change suggests product may have degraded or been contaminated |
| Density (25°C) | Approx. 1.02 g/cm³ | Aids in judging batch consistency |
| HLB Value | 3 | Low HLB value, mainly suitable for water-in-oil emulsification and defoaming systems |
| Cloud Point | None (insoluble in water) | This product is insoluble in water and will not exhibit cloud point phenomenon in aqueous solution |
Based on your specific application field, you can preliminarily investigate the root cause from the following aspects:
Again, emphasize that this product is classified as a skin/eye irritant (H315/H319) and may cause respiratory irritation (H335). During any problem handling process, be sure to wear personal protective equipment such as chemical safety goggles and chemical-resistant gloves. In case of accidental contact injury, follow the first aid measures in Section 4.1 of the SDS, and seek medical attention as appropriate. Do not mix or store this product with strong oxidizers. Please read the attached Safety Data Sheet thoroughly for detailed safety information.