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Hangzhou Hi-Tech Fine Chemical OB-1

Hangzhou Hi-Tech Fine Chemical OB-1 is wdely used in ABS, PS, HIPS, PA, PC, PP, EVA and rigid PVC and other plastics. It can withstand high temperature of 375℃, especially suitable for engineering plastic products and fiber products processed at high temperature. When using fluorescent whitening agent OB-1 for PE and soft PVC, special attention should be paid to the control of the dosage. If the dosage is too much, the whitening agent will migrate.

Chemical Name: 4,4′-Bis(2-benzoxazolyl)stilbene

Functions: Optical Brightener

CAS Number: 1533-45-5

Color: Green, Yellow

Compatible Polymers & Resins: Acrylonitrile Butadiene Styrene (ABS), Ethylene Vinyl Acetate (EVA), High-Impact Polystyrene (HIPS), Polyamides, Polycarbonates (PC), Polypropylenes (PP), Polystyrenes (PS)

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Name

    4,4′-Bis(2-benzoxazolyl)stilbene

    Dye Type

    Fluorescent Dyes

    Plastics & Elastomers Functions

    Optical Brightener

    Moleculr Formula
    C28H18N2O2
    Main Chemicals
    Fluorescent Brightener 393
    CAS No.
    1533-45-5
    EC No.
    216-245-3
    Technologies

    Elastomers,

    Pigments & Colorants,

    Plastics

    Product Families

    Pigments & Colorants — Dyes

    Specialty Dyes

    Elastomers — Elastomer Additives

    Other Elastomer Additives

    Plastics — Polymer Additives

    Pigments & Colorants

    Chemical Structure

    Hangzhou Hi-Tech Fine Chemical OB-1 - Chemical Structure

    Features & Benefits

    Materials Features

    Heat Resistance,

    High Temperature Strength,

    Whitening

    Product Feature

    It is not soluble in water. It has good heat resistance and is especially suitable for the processing of high melting point resins such as polyester. It has excellent whitening effect and very little addition.

    Applications & Uses

    Markets

    Automotive & Transportation,

    Building & Construction

    Applications

    Automotive & Transportation — Automotive

    Automotive Lighting

    Building & Construction — Building Materials

    Interior Fixtures

    Compatible Polymers & Resins

    Acrylonitrile Butadiene Styrene (ABS),

    Ethylene Vinyl Acetate (EVA),

    High-Impact Polystyrene (HIPS),

    Polyamides,

    Polycarbonates (PC),

    Polypropylenes (PP),

    Polystyrenes (PS)

    Recommended Dosage

    0.0025 - 0.025%, not more than 0.03%.

    Properties

    Color

    Green,

    Yellow

    Physical Form

    Crystals,

    Powder,

    Solid

    Typical Properties
    ValueUnitsTest Method / Conditions
    Melting Point 353 - 359 ℃—
    Maximum Absorption Spectrum Wave Length374.0nm—
    Maximum Emission Wave Length434.0nm—

    Packaging & Availability

    Packaging Type

    Bags

    Packaging

    10kg carton packing lined with plastic bag.

    Storage & Handling

    Storage

    It is recommended to store in a dry and ventilated warehouse, avoid rain. Keep away from fire and heat sources and avoid exposure to the sun. It is strictly forbidden to directly contact or mix with acid and alkali.

    Shelf Life

    Two years