Search results
Results From The WOW.Com Content Network
Methylene (IUPAC name: Methylidene, also called carbene or methene) is an organic compound with the chemical formula CH 2 (also written [CH 2] and not to be confused with compressed hydrogen, which is also denoted CH 2). It is a colourless gas that fluoresces in the mid-infrared range, and only persists in dilution, or as an adduct.
Methylene is the simplest carbene.. In organic chemistry, a carbene is a molecule containing a neutral carbon atom with a valence of two and two unshared valence electrons.The general formula is R−:C−R' or R=C: where the R represents substituents or hydrogen atoms.
The group may be represented as −CH 2 − or >CH 2, where the '>' denotes the two bonds. This stands in contrast to a situation where the carbon atom is bound to the rest of the molecule by a double bond, which is preferably called a methylidene group, represented =CH 2. [2] Formerly the methylene name was used for both isomers.
Ethylene is widely used in the chemical industry, and its worldwide production (over 150 million tonnes in 2016 [8]) exceeds that of any other organic compound. [ 9 ] [ 10 ] Much of this production goes toward creating polythene , which is a widely used plastic containing polymer chains of ethylene units in various chain lengths.
HOCH 2 (CH 2) 2 COOH 2-oxobutanoic acid: α-ketobutyric acid: CH 3 CH 2 COCOOH 3-oxobutanoic acid: acetoacetic acid diacetic acid: CH 3 COCH 2 COOH 4-oxobutanoic acid: succinic semialdehyde: OHC(CH 2) 2 COOH butanedioic acid: succinic acid: HOOC(CH 2) 2 COOH 2-methylpropanedioic acid: methylmalonic acid: HOOCCH(CH 3)COOH -butenedioic acid ...
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
CH2 could refer to: CH2, a postcode district in the CH postcode area; Council House 2, an office building in Melbourne, Australia; CH 2, the molecular formula of several chemical entities: see Methylene (disambiguation)
This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately.