Molar Mass of CH2Cl2 (Dichloromethane)

Molar Mass Calculator

What is the molar mass of CH₂Cl₂?

Answer

M(CH₂Cl₂) ≈

84.93 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Cl: 35.45.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Ccarbon	1	12.011	12.011 w ≈ 14.14%	≈ 14.14%
Hhydrogen	2	1.0080	2.0160 w ≈ 2.37%	≈ 2.37%
Clchlorine	2	35.45	70.90 w ≈ 83.48%	≈ 83.48%
Σ = 84.927 ≈ 84.93 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 99.99%; unrounded, they make exactly 100%.

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

Mass fractions of the elements

Cl 83.48%

C 14.14%H 2.37%

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Molar masses of substances nearby

Formula	M, g/mol
C₆H₁₂ (cyclohexane)	84.162
MgCO₃ (magnesium carbonate)	84.313
HClO₃ (chloric acid)	84.46
CH₂Cl₂ (dichloromethane)	84.93
NaNO₃ (sodium nitrate)	84.994
KNO₂ (potassium nitrite)	85.103
Rb (rubidium)	85.468

FAQ

What is the molar mass of CH2Cl2?

M(CH₂Cl₂) ≈ 84.93 g/mol

How to calculate the molar mass of CH₂Cl₂?

Add up the atomic weights of all the atoms in the formula: 12.011 + 2 × 1.0080 + 2 × 35.45 = 84.927 ≈ 84.93 g/mol.

How many grams are in 2 moles of CH₂Cl₂?

m = n × M = 2 mol × 84.93 g/mol = 169.86 g.

See Also