Symptoms Dell’s warts are a viral and benign infectious disease of the skin or mucosa that occurs primarily in children and immunocompromised individuals. The disease manifests as single or numerous round, dome-shaped, shiny, skin-colored or white papules that usually have a central depression with a spongy core that can be squeezed. A single patient may … Molluscum Contagiosum (Dell Warts)
Products Many of the chemicals involved are available in pharmacies and drugstores. Caution is advised when selling them. Suspicious transactions should be reported by specialists to the Federal Office of Police (fedpol). In many countries, legislation is currently being adapted to regulate access to precursors for private individuals and to make their misuse as difficult … Explosives Precursors
Products Nitric acid is available in pharmacies and drugstores in various concentrations. Structure and properties Nitric acid (HNO3, Mr = 63.0 g/mol) exists as a clear to nearly colorless liquid with a pungent odor that is miscible with water. It may turn yellowish in color. Various concentrations exist. These include: Fuming nitric acid: from about … Nitric Acid
Structure and properties Aqua regia is a mixture of concentrated nitric acid (HNO3) with concentrated hydrochloric acid (HCl) in a ratio of 1:3. Application Aqua regia can dissolve the precious metals gold and platinum. This is not possible with pure nitric acid.
Products Nitrogen is commercially available as a compressed gas in pressurized cylinders and as a liquid in cryogenic containers, among other products. Structure and properties Nitrogen (N, atomic mass: 14.0 u) is a colorless and odorless gas that is present in over 78% of air. It is a chemical element with atomic number 7 and … Nitrogen