Frequently Asked Questions (FAQs) about Fluorescent Whitening Agent FP127
Time：2025-09-21Views：
1. What is the appearance and form of FP127?
FP127 appears as a pale yellow crystalline powder, which is convenient for storage and addition to various raw materials. It remains stable under normal storage conditions and will not agglomerate or deteriorate easily.
2. What is the melting point of FP127, and will it have problems when used in high-temperature environments?
The melting point of FP127 ranges from 216°C to 222°C. It can maintain stability and exert a good whitening effect if the processing temperature is within 240°C. However, if the processing temperature exceeds 240°C for a long time, it may decompose and affect the whitening effect. Please pay attention to the processing temperature during use.
3. Which fields is FP127 suitable for?
FP127 has a wide range of applications:
- In the plastic industry, it has a significant whitening effect on plastic products such as polyvinyl chloride (PVC), polypropylene (PP), and polystyrene, especially showing outstanding advantages in PVC products.
- In the chemical fiber industry, it can be used for whitening polyester fiber, nylon fiber, and polypropylene fiber.
- It can also be used in fields such as coatings and printing inks to achieve whitening and brightening effects.
4. What is the recommended addition amount of FP127 in different products?
- For white PVC products: 0.01% - 0.05%.
- For transparent PVC products: 0.0001% - 0.001%.
- For white polystyrene products: 0.001% - 0.05%.
- For transparent polystyrene products: 0.0001% - 0.001%.
- For ABS materials: 0.01% - 0.05% (effectively eliminates the inherent yellowish tint of the material).
The specific addition amount can be appropriately adjusted according to the required whiteness of the product.
5. What are the advantages of FP127 compared with other whitening agents?
Compared with common whitening agents (e.g., OB-1), FP127 has better migration resistance — it will not easily precipitate from products, avoiding problems such as yellowing or soiling on the product surface, and can maintain the whiteness and color stability of products for a long time. In addition, it has excellent compatibility with various plastics and fiber materials, and can be evenly dispersed in different substrates to give full play to its whitening efficiency.
6. What are the precautions for storing FP127?
Store it in a cool, ventilated, and dry place, avoiding direct sunlight and high-temperature environments. Keep the packaging sealed to prevent moisture absorption and chemical reactions with other substances. When stored as required, the unopened product has a shelf life of 1 to 2 years.
7. When using FP127, how to ensure it is evenly dispersed in the material?
Before the molding process of plastic products, fully mix FP127 with plastic particles. Equipment such as a high-speed mixer can be used for mixing; adjust the mixing time and speed according to actual conditions to ensure the whitening agent is evenly distributed in the material and avoid uneven whitening.
8. Does FP127 comply with environmental standards, and is it harmful to the human body during use?
FP127 complies with relevant environmental standards and will not release harmful substances under normal use. However, during use, avoid direct skin contact and inhalation of dust — it is recommended to wear protective gloves, masks, and other protective equipment.
