Methylene bis-benzotriazolyl tetramethylbutylphenol


Methylene bis-benzotriazolyl tetramethylbutylphenol


  1. Basic Information
Product name Methylene bis-benzotriazolyl tetramethylbutylphenol; UV-360; MBBT; Bisotrizole; Tinosorb M
CAS No. 103597-45-1
EINECS No. 403-800-1
Molecular Formula: C41H50N6O2
Molecular Weight: 658.87
Structure Formula


  1. Technical Specification
Item        Specification
Appearance Light yellow crystalline powder
Assay ≥ 98.50%
Melting point 195~198℃
Ash 0.1% max
Loss on drying ≤0.30%
Specific extinction 500nm, 98% min; 460nm, 97% min.


  1. Application field

Methylene bis-benzotriazolyl tetramethylbutylphenol is a highly efficient ultraviolet absorber, the appearance is light yellow crystalline powder, can absorb 300-400nm ultraviolet, and has the ability to absorb UVA and UVB. It has the dual function of absorption and scattering to UVA band ultraviolet light, and has the extremely high light stability. When it is used in combination with other UVB wave ultraviolet absorbers, it has a significant synergistic effect and can obviously improve the SPF value of the formula.

As an ultraviolet absorber, Methylene bis-benzotriazolyl tetramethylbutylphenol has very low volatility and good compatibility with many polymers, suitable for acrylate, polyester, polycarbonate, polyamide, polyolefin, styrene polymers, elastomers, adhesives, etc. especially suitable for high concentration, low volatility and good compatibility, processing and aging conditions.

Methylene bis-benzotriazolyl tetramethylbutylphenol can be extruded by powder, solution or melt to prevent crystallization seepage and sublimation, and can also be used for casting, thin layer construction of fiber, paper and wallpaper. This product is a general chemical, with good storage and transportation stability, it is non-flammable and non-explosive, non-toxic and harmless.


  1. Packing

Standard packaging includes the following:

25kg per drum

Other package sizes are available upon request.


  1. Storage

Store in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use.


  1. Period of validity

24 months