Dibenzoylmethane 99.9% light yellow crystalline powder

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Essential information:

Name:Dibenzoylmethane（DBM）

CAS NO：120-46-7

Molecular formula: C15H12O2

Molecular weight:224.25

1. It is widely used as a kind of nontoxic thermal stabilizer for PVC and 1,3-diphenyl acrylonitrile (DBM). As a new auxiliary heat stabilizer for PVC, it has high transmittance, non-toxic and tasteless; it can be used with solid or liquid calcium / zinc, barium / zinc and other heat stabilizers, which can greatly improve the initial coloring, transparency, long-term stability of PVC, as well as precipitation and "zinc burning" during processing. Widely used in medical, food packaging and other non-toxic transparent PVC products (such as PVC bottles, sheets, transparent films, etc.).

2. Introduction of calcium and zinc stabilizers: (traditional stabilizers such as lead salt stabilizers and cadmium salt stabilizers) have the disadvantages of poor transparency, initial color difference, easy cross contamination and toxicity. Zinc and cadmium are non-toxic stabilizers. It has excellent thermal stability and lubricity, excellent initial coloring and color stability.

The thermal stability of pure calcium / zinc stabilizer is poor, so a variety of compounds should be compounded according to the processing technology and application of the product. Among the auxiliary stabilizers, β - diketones (mainly stearoyl benzoyl methane and dibenzoyl methane) are indispensable in calcium / zinc composite stabilizers.