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Speedblock 326

Technical Datasheet | Supplied by Lambson (Sartomer)
Speedblock 326 by Lambson (Sartomer) is 2-(5-chloro(2H)-benzotriazole-2-yl)-4-(methyl)-6-(tert-butyl)phenol. Acts as an UV absorber. It can be used to impart light stability in plastics and other organic materials. Offers broad range UV protection with an absorption band width 220nm to 400nm. Speedblock 326 is compatible with polyethylene, polyesters, polymethylmethacrylate and polypropylene. Recommended dosage is 0.1 – 0.5% depending on application. It is best used along with a HAL-type light stabilizer. It has a shelf life of 2 years.
Product Type
Light Stabilizers / UV Absorbers > Benzotriazoles
Chemical Composition
CAS Number

Compatiblity with other products

Find products that are predicted to be compatible with Speedblock 326.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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