Definition:Dalton (Unit)

Definition

The dalton is is a unit of mass.

It is defined as being:

$\dfrac 1 {12}$ of the mass of an atom of carbon-$12$

Conversion Factors

\(\ds \)

\(\)

\(\ds 1\)

dalton

\(\ds \)

\(=\)

\(\ds 1 \cdotp 66053 \, 90666 \, 0(50) \times 10^{-27}\)

kilograms

\(\ds \)

\(=\)

\(\ds 1 \cdotp 66053 \, 90666 \, 0(50) \times 10^{-24}\)

grams

Symbol

$\mathrm {Da}$

The symbol for the dalton is $\mathrm {Da}$.

The $\LaTeX$ code for \(\mathrm {Da}\) is \mathrm {Da} .

Source of Name

This entry was named for John Dalton.

Also known as

The dalton is also known as:

• the atomic mass unit
• the unified atomic mass unit
• the atomic mass constant.

Sources

• 1964: Milton Abramowitz and Irene A. Stegun: Handbook of Mathematical Functions ... (previous) ... (next): $2$. Physical Constants and Conversion Factors: Table $2.3$ Adjusted Values of Constants