A question that people often ask is: Is glow-in-the-dark powder safe? After all, the classic green glow-in-the-dark effect did use uranium-containing materials, and uranium is radioactive! But don't worry, today's glow-in-the-dark powder (especially strontium aluminate-based) is completely safe, non-toxic, and non-radioactive, so you can use it with confidence.
How does glow-in-the-dark powder glow?
The most popular glow-in-the-dark powder on the market now is strontium aluminate-based, because it is not only bright, but also has a very long glow time. Of course, other types of glow-in-the-dark powder are also safe, but today we will focus on strontium aluminate.
There are two most commonly used strontium aluminate glow in the dark powders:
SrAl2O4:Eu, Dy (yellow-green, JTPS series)
Sr4Al14O25:Eu, Dy (blue-green, JTB series)
They are made from materials such as strontium carbonate (SrCO3), dysprosium oxide (Dy2O3), europium oxide (Eu2O3), and aluminum oxide (Al2O3). After crushing and screening, glow in the dark powders of different brightness and durability can be made. Although the names sound very chemical, strontium and dysprosium are actually rare earth elements, non-toxic and harmless, and do not have radiation risks like uranium.
Why can glow in the dark powder glow?
Simply put, glow in the dark powder is like a "photovoltaic battery":
During the day (or when the lights are on), it absorbs light energy and stores electrons;
After turning off the lights, the stored energy is slowly released in the dark, emitting a beautiful afterglow.
This process is called "electron transition", which is achieved by the characteristics of the material itself and does not require any radiation or harmful substances.
Still not assured? We are strictly certified!
If you are still a little worried, I can tell you: our strontium aluminate glow in the dark powder has passed the REACH certification and meets the international standards of ASTM and RoHS. It has been tested for harmful substances such as lead and heavy metals, and the results are all up to standard. In other words, you can use it with confidence for DIY, handicrafts, safety signs, etc.!
If you want to see more test reports or have other questions, please feel free to contact us at any time: Send an email to jtym@lumi-nite.cn, or go directly to the official website and click "Contact Us"
In short, the current glow in the dark powder is no longer an antique from the "uranium era". It is very safe, so use it boldly!
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