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Benefos® 1618 belongs to the phosphites chemical family acts as a secondary antioxidant.

Chemical Family: Phosphites

Functions: Antioxidant, Secondary Antioxidant

Compatible Polymers & Resins: Polystyrenes (PS)

Features: Good Light Stability, Good UV Stability, Low Volatility

Synonyms: 3,9-Bis(octadecyloxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-Dioctadecoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, Bis(octadecyl) pentaerythritol diphosphite, Cyclic neopentanetetraylbis(octadecyl phosphite), Dioctadecyl pentaerythritol diphosphite, Dioctadecyl pentaerythritol diphosphonite, Distearyl pentaerythritol diphosphite, Distearyl pentaerythritol disphosphite, Distearyl pentaerythrityl diphosphite, Pentaerythritol bis(octadecyl phosphite), Pentaerythritol bis(octadecyl) diphosphite, Pentaerythritol bis(stearyl phosphite)

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Family
    Plastics & Elastomers Functions
    CAS No.
    3806-34-6
    EC No.
    223-276-6

    Features & Benefits

    Advantages
    • Highly effective to prevent discoloration of polymers during extrusion and molding operations
    • High performance at low loading levels 
    • Reduces discoloration in polymers containing pigments such as titanium dioxide 
    • Enhances the light stability of polyolefins when used with light stabilizers 
    • Non-discoloring and low volatility 
    • FDA cleared for use in olefin polymers, EVA, and polystyrene

    Applications & Uses

    Compatible Polymers & Resins
    Use Level
    0.05 and 0.5%
    Applications

    Benefos 1618 is is particularly useful to prevent the discoloration of polymers during melt processing operations, including polyolefins, polyesters, styrenic polymers, engineering plastics, elastomers, and adhesives. It also contributes to the UV stability of polyolefins.

    Guidelines for Use

    The recommended loading levels range between 0.05 and 0.5% depending on the substrate, processing conditions, and other performance requirements. Best results in terms of processing and thermal oxidative stability are generally obtained by combining Benefos 1618 with conventional phenolic antioxidants (BNX 1010, BNX 1076, and others). Benefos 1618 is also suitable for use in combination with other antioxidants (for example thioethers) and light stabilizers, including hindered amine light stabilizers (HALS), UV absorbers, and benzoates. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use.

    Properties

    Physical Form

    Regulatory & Compliance

    Certifications & Compliance
    FDA Regulations

    Benefos 1618 is FDA cleared under 21 CFR §178.2010, including in olefin polymers, ethylene-vinyl acetate copolymers, and polystyrene (including rubber-modified polystyrene). Please contact your Mayzo representative for complete details, including restrictions of use

    Packaging & Availability

    Regional Availability
    • Asia Pacific
    • North America

    Storage & Handling

    Shelf Life
    24 Months
    Storage

    This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place. This product is moisture sensitive. Guard against exposure to humidity or moisture to maintain product quality. Opened containers should be used as soon as possible to avoid hydrolysis, especially during humid weather.