CompoundList
Molecular formula

C21H20ClOP

1 compound has this formula on CompoundList.

Molar mass
354.81g/mol
Monoisotopic mass
354.0940Da
Atoms
44
Elements
5
Rings plus double bonds
12

The formula C21H20ClOP describes a molecule made of 21 carbon atoms, 20 hydrogen atoms, 1 chlorine atom, 1 oxygen atom and 1 phosphorus atom. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.

Elemental composition

  • C Carbon × 2171.09%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 205.68%
    1.008 × 20 = 20.160 g/mol
  • Cl Chlorine × 19.99%
    35.45 × 1 = 35.450 g/mol
  • O Oxygen × 14.51%
    15.999 × 1 = 15.999 g/mol
  • P Phosphorus × 18.73%
    30.974 × 1 = 30.974 g/mol
Look up another formula

Compounds with the formula C21H20ClOP

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 1 of 1 compounds

Frequently asked questions

What is the molar mass of C21H20ClOP?

The molar mass of C21H20ClOP is 354.81 g/mol, calculated from standard atomic weights for 21 carbon atoms, 20 hydrogen atoms, 1 chlorine atom, 1 oxygen atom and 1 phosphorus atom. The monoisotopic mass is 354.0940 Da.

How many compounds have the formula C21H20ClOP?

CompoundList lists 1 compound with the molecular formula C21H20ClOP, including Acetonyltriphenylphosphonium chloride. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.

What is the degree of unsaturation of C21H20ClOP?

C21H20ClOP has a degree of unsaturation of 12. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.