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Chemical Abstracts Service Building B in August 2009. Columbus, Ohio. STN (Scientific & Technical Information Network) International is operated jointly [4] by CAS and FIZ Karlsruhe, and is intended primarily for information professionals, using a command language interface.
Citronella oil. Citronella oil is an essential oil obtained from the leaves and stems of different species of Cymbopogon (lemongrass). The oil is used extensively as a source of perfumery chemicals such as citronellal, citronellol, and geraniol.
As 2 O 5: arsenic pentoxide: 1303–28–2 As 2 P 2: arsenic diphosphide: 12512–03–7 As 2 S 3: arsenic trisulfide: 1303–33–9 As 2 S 4: arsenic tetrasulfide: 1303–32–8 As 2 S 5: arsenic pentasulfide: 1303–34–0 As 2 Se: arsenic hemiselenide: 1303–35–1 As 2 Se 3: arsenic triselenide: 1303–36–2 As 2 Se 5: arsenic ...
Sodium dichloroisocyanurate (INN: sodium troclosene, troclosenum natricum or NaDCC or SDIC) is a chemical compound widely used as a cleansing agent and disinfectant. [1] It is a colorless, water-soluble solid, produced as a result of reaction of cyanuric acid with chlorine.
Screenshot of the CAS Common Chemistry database with information about caffeine ().. A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry.
Chlorobenzene can persist in soil for several months, in air for about 3.5 days, and in water for less than one day. Humans may be exposed to this agent via breathing contaminated air (primarily via occupational exposure), consuming contaminated food or water, or by coming into contact with contaminated soil (typically near hazardous waste sites).
It transitions from red to yellow at pH 1.2–2.8 and from yellow to blue at pH 8.0–9.6. It is usually a component of Universal indicator. At wavelength (378 - 382) nm, extinction coefficient > 8000 and at wavelength (298 - 302) nm, the extinction coefficient > 12000. [3]
The time-weighed average threshold limit value for exposure to DEAD over a typical 40-hour working week is 50 parts per million; that is, DEAD is half as toxic as, e.g., carbon monoxide. [28] Safety hazards have resulted in rapid decline of DEAD usage and replacement with DIAD and other similar compounds.