namespace: http://www.xml-cml.org/units/units
id | title | symbol | unitType | multSI | SI.id | description | unitType description |
---|---|---|---|---|---|---|---|
ang | Angstrom | A | length | 1.0E-10 | m | derived length unit | Length |
ang-1 | Angstrom-1 | A-1 | length-1 | 1.0E10 | m-1 | derived inverse length | null |
ang3 | Angstrom cubed | A3 | volume | 1.0E-30 | m3 | Volume | |
arb | Arbitrary | arb | arbitrary | NULL | arb | null | |
atmass | Atomic mass unit | amu | mass | 1.6605402E-27 | kg | Mass | |
celsius | Celsius | [deg]C | temp | 1.0 | k | The degree Celsius ([deg]C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701-1744), who first proposed a similar system in 1742. The Celsius scale sets 0.01 [deg]C to be at the triple point of water and a degree Celsius to be 1/273.16 of the difference in temperature between the triple point of water and absolute zero. Until 1954 the scale was defined with the freezing point of water at 0 [deg]C and the boiling point at 100 [deg]C at standard atmospheric pressure. This definition is still a close approximation to the actual definition and has lead many to wrongly refer to the scale as Centigrade. | null |
cm | centimeter | cm | length | 0.01 | m | Length | |
cm-1 | wavenumber | cm-1 | energy | NULL | energy | energy | |
cm2 | centimeter squared | cm2 | area | 1.0E-4 | m2 | Area | |
debye | debye | D | dipole | 3.335641E-30 | c.m | CGS units for electric dipole | null |
deg | degree | [deg] | angle | 0.01745329 | radian | The degree and its subdivisions are the only units in use which are written without a separating space between the number and unit symbol (e.g. 15° 30', not 15 ° 30 '). | angle |
electron | electron charge | e | charge | 1.60217733E-19 | c | null | |
ev | electron volt | eV | energy | 1.60217733E-19 | joule | energy | |
g | gram | g | mass | 0.0010 | kg | Mass | |
gpa | gigaPascal | GPa | pressure | 1.0E9 | pa | Pressure | |
h | hour | h | time | 3600.0 | s | 3600 seconds | Time |
hartree | Hartree | hart | energy | 4.3597482E-18 | joule | energy | |
kcal | kilocalorie | kcal | energy | 4184.0 | joule | There are 3 main definitons of calorie which differ by ca 0.05% so cal and kcal should be deprecated. | energy |
kcal.ang-1 | kilocalorie per angstrom | kcal.ang-1 | force | NULL | newton | Force | |
kcal.mol-1.ang-1 | kcal per mole per Angstrom | kcal mol-1 ang-1 | xx | NULL | xx | null | |
kcal.rad-1 | kilocalorie per radian | kcal.ang-1 | energy | NULL | j | energy | |
kj.mol-1 | kj per mole | kj mol-1 | molar_energy | 1000.0 | j.mol-1 | molar energy | |
l | litre | L | volume | 0.0010 | m3 | Volume | |
ml | millilitre | mL | volume | 1.0E-6 | m3 | Volume | |
nm | nanometer | nm | length | 1.0E-9 | meter | Length | |
ph | pH units | pH | dimensionless | 1.0 | dimensionless | pH is measured in log units so has no dimensions; this entry allows the quantityType to be captured | Dimensionless |
unknown | Unknown | unk | unknown | NULL | unknown | unknown unit and unknown unitType | Unknown |