Phosphorus Pentaoxide in Powder Form is hygienically processed to ensure safety of usage. Phosphorus Pentaoxide is offered in white powder form which is hygroscopic in nature. Phosphorus Pentaoxide is insoluble in a range of 10 ppm. Phosphorus Pentaoxide in Powder Form contains heavy metal in a range of 5 ppm and arsenic or arsenic compound in a range of 10 ppm.