Hardener CL (60 min)

    Single packs:
    750 g, 3, 7.5 and 20 kg

    Hardener CL (60 min)

    Hardener for Epoxy Resin L

    The resin system Epoxy Resin L + Hardener CL yields superior impregnating and wetting properties towards carbon, glass, aramid and natural fibres. It is especially suitable for carbon coating of automotive parts.

    • Low-viscous
    • High degree of UV stability
    • Tack-free curing even of thin layers
    • Glass transition temperature (Tg) > 90 °C (post-curing at 70 °C / 15 h)
    • High static and dynamic strength (equal to Epoxy Resin L 285 with Hardener 285)
    • Free of nonylphenol and DETA

    Processing time: 60 minutes (100 g / 20 °C)

    Mixing ratio:
    100 : 30 parts by weight resin : hardener
    100 : 35 parts by volume resin : hardener

    The resin system is ambient curing and develops no distinctive brittleness even at curing temperatures below 20 °C (for at least 48 h). We however recommend, to improve the physical and chemical properties, to perform a post-curing at least at 40 °C over 15 h.

    It exhibits a very good price/performance ratio and is suitable for the following processing procedures:

    • Hand laminating
    • Vacuum moulding
    • Press moulding

    Technical Data:

    Viscosity at 23°C in mPa*s 70-120
    Density at 23 °C in g/cm³ 0.95-0.97
    Colour (Gardner) < 2
    H*-equivalent weight in g/Eq 54
    Solid content in % 100

    Mechanical properties (pure resin cured*) of Epoxy Resin L + Hardener CL

    Flexural test

    Flexural strength DIN EN ISO 178 in MPa 137
    Surface strain at maximum stress 6.8 %
    Surface strain (no specimen failure) 7 %
    Flexural modulus 3220

    Tensile test

    Tensile strength (DIN EN ISO 527) in MPa 82.8
    Elongation at maximum strain 4.9 %
    Elongation at break 5.5 %
    Tensile modulus in MPa 3190

    Compression test

    Compressive strength (DIN EN ISO 604) at 6 % compression



    Linear shrinkage (DIN EN 12617-1) 0.3 %

    *at 1 h 23 °C + 5 h 70 °C + 5 h 80 °C)

    CYTOX Expertise for the resin system Epoxy resin L + Hardener CL: this system is not cytotoxic (cell damaging), important for applications in medical purposes!

    Please order Epoxy Resin L separately.

    Hardener CL (60 min) bottle/ 750 g


    required resin quantity: 2.5 kg Epoxy resin L

    Item no.  109285-H-2 21 in stock  (delivery time 1-2 days)

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    (Base Price 30,48 € /  kg)
    - +

    Hardener CL (60 min) canister/ 3 kg


    required resin quantity: 10 kg Epoxy resin L

    Item no.  109285-H-3 Only 8 left in stock, more on the way  (delivery time 1-2 days)

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    (Base Price 26,52 € /  kg)
    - +

    Hardener CL (60 min) canister/ 7.5 kg


    required resin quantity: 25 kg Epoxy resin L

    Item no.  109285-H-4 Only 8 left in stock, more on the way  (delivery time 1-2 days)

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    (Base Price 23,72 € /  kg)
    - +

    Hardener CL (60 min) canister/ 20 kg


    required resin quantity: 66,7 kg Epoxy resin L

    Item no.  109285-H-5 Only 2 left in stock, more on the way  (delivery time 1-2 days)

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    (Base Price 21,45 € /  kg)

    Scaled Price

    • From Qty 2:  5,0%
    • From Qty 4:  10,0%
    • From Qty 6:  15,0%
    • From Qty 10:  20,0%
    - +

    all Prices  price incl. VAT, possibly plus shipping

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    Instructions for use
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    Hazards identification - Hardener CL (60 min)

    Hazard components for labelling

    benzyl alcohol
    salicylic acid
    Phenol, styrenated

    Signal word: Danger


    GHS05 GHS07

    Hazard statements

    H302 Harmful if swallowed.
    H314 Causes severe skin burns and eye damage.
    H317 May cause an allergic skin reaction.
    H318 Causes serious eye damage.
    H412 Harmful to aquatic life with long lasting effects

    Precautionary statements

    P260 Do not breathe dust / fume / gas / mist / vapours / spray.
    P303 P361 P353 IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water or shower.
    P310 Immediately call a POISON CENTER or doctor / physician.
    P362 P364 Take off contaminated clothing and wash it before reuse.
    P405 Store locked up.
    P501 Dispose of waste according to applicable legislation.