The molecular formula of yellow-Green luminous powder (SrAl2O4:Eu,Dy) was defined as CAS# 201426-52-0 in Europe in 2018, so this CAS NO only was applied for European customers

And in Europe and Russia CASRN 201426-52-0 is classified as environmentally hazardous and is dangerous cargo, UN 3077.

Until 2019, our American customer did a third-party inspection and told me that CAS#883150-73-0 (SrAl2O4:EU+2, Dy+3) is used in the United States to define Yellow-Green luminous powder.

But this CAS NO is not in the US TSCA list, and American customers cannot use this number to import yellow-green luminescent powder

In order to solve this problem, After SGS XRD inspection in China, it is proved that yellow-Green luminous powder not a polymer, but a doped material with different crystalline phases, the ingredients are as follows:

Fortunately, all the monomer CAS NOs as above are in the TSCA list of the US, so it is the most correct operation to use the monomer CAS NO to import Yellow-Green luminous powder.

Having said so much, I don’t know if you will have the same questions as us.

Luminous powders are not only yellow-green, but also blue-green, sky blue and other colors. So what is their CAS NO?

Now let us tell you the answer, the blue-green luminous powdwr XRD detection components are as follows:

As for other color series of luminous powders, they are basically made of yellow-green and blue-green luminous powders coated with fluorescent pigments.

Therefore, the content of yellow-green and blue-green components can basically represent all colors of luminous powder.