Red phosphorus is used in safety matches, fireworks, smoke bombs and pesticides. Black phosphorus is also formed by heating white phosphorus, but a mercury catalyst and a seed crystal of black phosphorus are required. Black phosphorus is the least reactive form of phosphorus and has no significant commercial uses.hosphorus has three main allotropes: white, red and black. White phosphorus is poisonous and can spontaneously ignite when it comes in contact with air. For this reason, white phosphorus must be stored under water and is usually used to produce phosphorus compounds.
Vitamin D, which is produced when ultraviolet sunlight hits the skin, helps the body absorb calcium, leading to stronger bones and the prevention of brittle bone diseases. More recently, according to âThe New York Times,â vitamin D deficiency has been linked to immune disorders that can cause inflammation, which in turn can lead to swelling.
Specific symptoms related to vitamin D deficiency include: 1  Muscle weakness. 2  Joint aches and discomfort. 3  High blood pressure. 4  Inability to concentrate or focus. 5  Urinary incontinence, bladder issues. 6  Constipation. 7  Headaches. 8  Cold/flu, immune system decline. 9  Mood disorders.