Optical Brightener FP-127 for Plastics | C.I. Fluorescent Brightener 378 | CAS No. 40470-68-6

Short Description:

Optical Brightener FP-127 (C.I. Fluorescent Brightener 378, CAS 40470-68-6) is a fluorescent whitening agent mainly used for plastics, particularly PVC and polystyrene (PS). It helps improve the visual whiteness and brightness of plastic products by reducing unwanted yellowish tones through blue fluorescence. FP-127 can also be used in other compatible thermoplastics where optical brightening is required.

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Product Detail

Product Tags

Key Features

Suitable for PVC

FP-127 is particularly suitable for PVC applications and can be used to improve the perceived whiteness and brightness of compatible rigid and flexible PVC products.

Suitable for Polystyrene

FP-127 has good compatibility with polystyrene and is widely used for optical brightening of PS products.

Effective Optical Brightening

FP-127 helps compensate for unwanted yellowish tones and improves the visual whiteness and brightness of finished plastic products.

Good Compatibility with Plastics

FP-127 shows good compatibility with PVC and polystyrene systems and can also be used in other compatible thermoplastics.

Blue-Violet Shade

The supplied FP-127 grade has a blue-violet color shade, supporting a cleaner and brighter visual appearance in suitable applications.

Product Information

Item	Specification
Product Name	Optical Brightener FP-127
C.I. Name	C.I. Fluorescent Brightener 378
CAS No.	40470-68-6
Appearance	Light yellowish powder
Melting Point	219–221°C
Purity (HPLC)	≥ 98.5%
Color Shade	Blue-violet
Fineness	≥ 200 mesh
Water-Insoluble Content	≤ 0.5%

Typical Applications

PVC Products

Optical Brightener FP-127 is particularly suitable for PVC products where improved whiteness, brightness and visual appearance are required.

Polystyrene (PS)

FP-127 can be used in polystyrene products to improve perceived whiteness and brightness and reduce the appearance of unwanted yellowish tones.

Other Thermoplastics

FP-127 can also be used in compatible thermoplastic applications where fluorescent whitening and improved visual brightness are required. Suitability should be evaluated according to the specific polymer and processing conditions.