C-4 (explosive) C-4 or Composition C-4 is a common variety of the plastic explosive family known as Composition C. The British version of the explosive is known as PE-4 (Plastic Explosive). C-4 is composed of explosives, plastic binder, plasticizer to make it malleable, and usually a marker or odorizing taggant chemical. C-4 has a texture similar to modeling clay and can be molded into any desired shape. C-4 is stable and an explosion can only be initiated by the combination of extreme heat and shock wave from a detonator.
The formyl group is a functional group, with the structure R-CHO, consisting of a carbonyl center (a carbon double bonded to oxygen) bonded to hydrogen and an R group, which is any generic alkyl or side chain. The group without R is called the aldehyde group or formyl group.ecause of resonance stabilization of the conjugate base, an Î±-hydrogen in an aldehyde (not shown in the picture above) is far more acidic, with a pKa near 17, than a C-H bond in a typical alkane (pKa about 50).
- The carbonyl group of aldehyde is bonded to a hydrogen from one end, but in ketone, the carbonyl group is bonded to carbon atoms from both sides. - Therefore, a ketone functional group is always seen in the middle of a molecule, and aldehyde group is always at a termini.ldehyde. Aldehydes have a carbonyl group. This carbonyl group is bonded to another carbon from one side, and from the other end, it is connected to hydrogen. Therefore, aldehydes can be characterized with the âCHO group, and following is the general formula of an aldehyde. The simplest aldehyde is formaldehyde.