Red phosphorus is one of the most common allotropes of phosphorus and is considered to be a derivative of the P4molecule. It exists in an amorphous (non-crystalline) network of phosphorus atoms. It is found to be more stable than (another naturally occurring phosphorus allotrope).
ppearance | Form: powder Colour: red |
pH | 6.5~7.5 |
Melting point/freezing point | Melting point/range: 280 °C - lit. |
Flammability (solid, gas) | The substance or mixture is a flammable solid |
Vapour pressure | 0.04 hPa at 21 °C |
Vapour density | no data available |
Relative density | 2.34 g/ml at 25 °C |
Index Items | Superior quality | First grade |
Main content, (as for P)%≥ | 99.0 | 98.5 |
Phosphous, yellow content, as for P %≤ | 0.005 | 0.005 |
Free acid content (as for HPO) %≤ | 0.30 | 0.50 |
Moisture %≤ | 0.2 | 0.25 |
Mesh size passed 20 % ≥ | 50 | 50 |
Mesh size passed 80 % ≥ | 100 | 100 |
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