This annex contains tables defining those EDCS Dictionary Entries whose use is deprecated as defined in Annex G. Change and deprecation plan.
The use of the EUs in Table B.1 is deprecated. Users of these units of measure are strongly cautioned that these EUs are expected to be removed in a future version of this International Standard.
| Label | Symbol | Quantity / Definition | EQ label | Code | References |
| ANGSTROM | Å | length; ångström; 1 Å = 10-10 m = 10-1 nm = 10-4 μm (exactly) The ångström is recognized by the CIPM for temporary use. |
LENGTH | 5 | ISO 31-1, 1-3.a (remarks); ISO 1000, Annex A 6.3 |
| ARE | a | area; 1 a = 1 dam2 = 102 m2 (exactly) This unit and its symbol were adopted by the CIPM in 1879 and are used to express agrarian areas (temporary use). |
AREA | 6 | ISO 31-1, 1-5.a (remarks); ISO 1000, Annex A 1-4 |
| ASTRONOMICAL_UNIT | AU | length; 1 AU = 1,495 978 7 x 1011 m (approximately; adopted value in System of Astronomic Constants, 1976) | LENGTH | 7 | ISO 31-1, 1-3.B.b |
| BAR | bar | pressure; 1 bar = 105 Pa (exactly) The use of the bar should be restricted to the existing uses in the field of fluid pressure. This unit and its symbol are included in the 9th General Conference on Weights and Measures, 1948, Resolution 7. The bar is recognized by the CIPM for temporary use. |
PRESSURE | 8 | ISO 31-3, 3-15a (remarks); ISO 1000, Annex A 3-15.1 |
| BARN | b | area; 1 b = 100 fm2 = 10-28 m2 (exactly) The barn is a special unit employed in nuclear physics to express effective cross sections. |
AREA | 9 | ISO 31-10, 10-3.a (remarks) |
| CURIE | Ci | activity (of a radio nuclide); 1 Ci = 3.7 x 1010 Bq (exactly) The curie is a special unit employed in nuclear physics to express activity of radio nuclides (12th General Conference on Weights and Measures, 1964, Resolution 7). The curie is recognized by the CIPM for temporary use. |
RADIONUCLIDE_ACTIVITY | 30 | ISO 31-9, 9-33.a (remarks); ISO 1000, Annex A 9-33 |
| FOOT | ft | length; 1 ft = 0,304 8 m (exactly) | LENGTH | 51 | ISO 31-1, 1-3.A.b |
| GAL | Gal | acceleration; Change in velocity divided by time. 1 Gal = 0,01 m/s2 (exactly) The milligal is commonly used in geodesy. |
ACCELERATION | 52 | ISO 31-1, 1-11.B.a |
| GON | gon | plane angle; dimensionless 1 gon = π / 200 rad = 0,015 707 96 rad (exactly) |
PLANE_ANGLE | 54 | ISO 31-1, 1-1.B.a; ISO 1000, Annex A 1-1 |
| HECTARE | ha | area; 1 ha = 1 hm2 = 104 m2 (exactly) The hectare is recognized by the CIPM for temporary use. |
AREA | 62 | ISO 31-1, 1-5.a (remarks) |
| KILOPOUND | kp | mass; Also known as the hundredweight (cwt). 1 kip = 453,592 37 kg (exactly) |
MASS | 122 | ISO 31-3, 3-1.B.a; ISO 31-0, 2.3.2.3 |
| KNOT | kn | velocity; 1 kn = 1 nautical mile per hour = 1,852 km/h = 0,514 444 m/s (exactly) The knot is recognized by the CIPM for temporary use. |
VELOCITY | 124 | ISO 31-1, 1-10.b (remarks); ISO 1000, Annex A 1-10 |
| LIGHT_YEAR | l.y. | length; 1 light year is the distance travelled in 1 year by electromagnetic waves in free space. 1 l.y. = 9,460 730 x 1015 m (exactly) |
LENGTH | 125 | ISO 31-1, 1-3.B.a |
| LONG_TON | ton (long) | mass; 1 long ton (US) = 1 ton (UK) = 1 016,047 kg (exactly) | MASS | 129 | ISO 31-3, 3-1.B.e |
| MILE | mile | length; Also known as the statute mile. 1 mile = 1 609,344 m (exactly) |
LENGTH | 144 | ISO 31-1, 1-3.A.d |
| MILE_PER_HOUR | mile/h | velocity; Distance divided by time. 1 mile/h = 0,447 04 m/s (exactly) |
VELOCITY | 145 | ISO 31-1, 1-10.A.b |
| NAUTICAL_MILE | none | length; 1 nautical mile = 1 852 m (exactly) The nautical mile is a special unit employed for marine and aerial navigation to express distances. The conventional value was adopted by the First International Extraordinary Hydrographic Conference, Monaco, 1929, under the name "international nautical mile." The nautical mile is recognized by the CIPM for temporary use. |
LENGTH | 153 | ISO 31-1, 1-3.a (remarks) |
| PARSEC | pc | length; 1 parsec is the distance at which 1 astronomical unit subtends an angle of 1 second of arc. 1 pc = 206 264,8 AU = 30,856 78 x 1015 m (exactly) |
LENGTH | 167 | ISO 31-1, 1-3.B.c |
| PERCENT | % | special, pure number; dimensionless A symbol used for the number 0,01 . 1% = 0,01 x 1 (often omitted) |
PURE_NUMBER | 174 | ISO 31-0, 2.3.3 |
| PPB_MASS_FRACTION | ppb | mass fraction; dimensionless 1 ppb = 10-9 kg/kg (exactly) |
MASS_FRACTION | 176 | ISO 31-8, 8-12.a; ISO 31-0, 2.3.3 |
| PPM_MASS_FRACTION | ppm | mass fraction; dimensionless 1 ppm = 10-6 kg/kg (exactly) |
MASS_FRACTION | 177 | ISO 31-8, 8-12.a; ISO 31-0, 2.3.3 |
| PPT_MASS_FRACTION | ppt | mass fraction; dimensionless 1 ppt = 10-12 kg/kg (exactly) |
MASS_FRACTION | 178 | ISO 31-8, 8-12.a; ISO 31-0, 2.3.3 |
| PPTH_MASS_FRACTION | ppth | mass fraction; dimensionless 1 ppth = 10-3 kg/kg (exactly) |
MASS_FRACTION | 179 | ISO 31-8, 8-12.a; ISO 31-0, 2.3.3 |
| RAD | rd | absorbed dose (ionizing radiation); 1 rad = 1 cGy = 10-2 Gy (exactly) The rad is a special unit employed to express absorbed dose of ionizing radiations. When there is risk of confusion with the symbol for radian, rd may be used as the symbol for rad. The rad is recognized by the CIPM for temporary use. |
ABSORBED_DOSE | 180 | ISO 31-10, 10-51.a (remarks); ISO 1000, Annex A 10-51.2 |
| REM | rem | dose equivalent (ionizing radiation); 1 rem = 1 cSv = 10-2 Sv (exactly) The rem is a special unit used in radioprotection to express dose equivalent. The rem is recognized by the CIPM for temporary use. |
DOSE_EQUIVALENT | 185 | ISO 31-10, 10-52.a (remarks); ISO 1000, Annex A 10-52 |
| ROENTGEN | R | exposure (X- or gamma radiation); 1 R = 2,58 x 104 C/kg (exactly) The röntgen is a special unit employed to express exposure of X- or gamma radiations. The röntgen is recognized by the CIPM for temporary use. |
EXPOSURE | 186 | ISO 31-10, 10-58.a (remarks); ISO 1000, Annex A 10-58 |
| TON | ton | mass; 1 ton (US) = 907,184 7 kg (exactly) | MASS | 212 | ISO 31-3, 3-1.B.e |
| YEAR | a | time (annum); also known as tropical year. The time which elapses between two successive passages of the sun through the vernal equinox. This time interval is related to the corresponding difference of mean longitude of the sun, which depends on time in a not exactly linear form; i.e., it decreases at a rate of nearly 0,53 s per century. 1 year = 365,242 20 d = 31 556 926 s (approximately) |
TIME | 240 | ISO 31-1, 1-7.B.a |
