ConstantID

Deuteron molar mass

Atomic & nuclearMeasured

M(d) = 2.013 553 214 66(63) × 10−3 kg mol−1

Value
2.013 553 214 66 × 10−3 kg mol−1
Standard uncertainty
6.3 × 10−13 kg mol−1
Relative uncertainty
3.1 × 10−10 (313 parts per trillion)
Status
Measured
Symbol
M(d)
Source
CODATA 2022 via NIST · NIST entry

Use in a calculation

# deuteron molar mass, CODATA 2022 (NIST)
deuteron_molar_mass = 2.01355321466e-3  # kg mol^-1, standard uncertainty 6.3e-13

# SciPy: scipy.constants.physical_constants['deuteron molar mass']

What it is

The mass of one mole of deuterons (deuteron), in kilograms per mole.

How the value changed, 1998–2022

Each point is one CODATA adjustment, plotted as its difference from the 2022 value; the bars show one standard uncertainty (an arrowhead means the bar runs off the chart).

deuteron molar mass: CODATA values 1998–2022 relative to the 2022 value, in parts per trillion, with one-standard-uncertainty bars−2000−10000+1000+2000parts per trillion1998200220062010201420182022

Relative uncertainty

deuteron molar mass: relative standard uncertainty in each CODATA adjustment, logarithmic scale10⁻¹¹10⁻¹⁰10⁻⁹1998200220062010201420182022
CODATAValue (uncertainty)Relative uncertaintyChange from previous
20222.013 553 214 66(63) × 10−33.1 × 10−10 +4.3 σ of 2018
20182.013 553 212 05(61) × 10−33.0 × 10−10 −17.4 σ of 2014
20142.013 553 212 745(40) × 10−32.0 × 10−11 +0.4 σ of 2010
20102.013 553 212 712(77) × 10−33.8 × 10−11 −0.2 σ of 2006
20062.013 553 212 724(78) × 10−33.9 × 10−11 +0.1 σ of 2002
20022.013 553 212 70(35) × 10−31.7 × 10−10 −0.0 σ of 1998
19982.013 553 212 71(35) × 10−31.7 × 10−10

“Change from previous” is the shift in the value divided by the standard uncertainty of the previous adjustment. Earlier values are converted into the current unit where NIST changed it (for example J s to J Hz⁻¹).

Related constants

Atomic & nuclear μd/μe Deuteron-electron magnetic moment ratio −4.664 345 550(12) × 10−4 Atomic & nuclear md/me Deuteron-electron mass ratio 3670.482 967 655(63) Atomic & nuclear gd Deuteron g factor 0.857 438 2335(22) Atomic & nuclear μd Deuteron magnetic moment 4.330 735 087(11) × 10−27 J T−1 Atomic & nuclear μd/μB Deuteron magnetic moment to Bohr magneton ratio 4.669 754 568(12) × 10−4 Atomic & nuclear μd/μN Deuteron magnetic moment to nuclear magneton ratio 0.857 438 2335(22) Atomic & nuclear md Deuteron mass 3.343 583 7768(10) × 10−27 kg Atomic & nuclear mdc2 Deuteron mass energy equivalent 3.005 063 234 91(94) × 10−10 J