As of 2022-03-07, the Wikidata property UN class (P874) is used on 9 items as main value on statements (not counting qualifiers) of the Q and P namespaces.

Closest properties: by cardinality of intersection, by Jaccard index.

Display properties of the following types:                                    

Closest properties by cardinality of intersection

IDLabelIntersection cardinalityJaccard index
P679 ZVG number 9
 0.0013
P7049 AICS Chemical ID (former scheme) 9
 0.0005
P2566 ECHA InfoCard ID 9
 0.0002
P232 EC number 9
 0.0002
P2067 mass 9
 0.0000
P3117 DSSTox substance ID 9
 0.0000
P231 CAS Registry Number 9
 0.0000
P31 instance of 9
 0.0000
P657 RTECS number 8
 0.0047
P652 UNII 8
 0.0001
P683 ChEBI ID 8
 0.0001
P661 ChemSpider ID 8
 0.0001
P8494 DSSTOX compound identifier 8
 0.0000
P233 canonical SMILES 8
 0.0000
P662 PubChem CID 8
 0.0000
P274 chemical formula 8
 0.0000
P234 InChI 8
 0.0000
P235 InChIKey 8
 0.0000
P646 Freebase ID 8
 0.0000
P695 UN number 7
 0.0138
P2054 density 7
 0.0047
P5220 ICSC ID 7
 0.0042
P7025 HCIS ID 7
 0.0019
P8408 KBpedia ID 7
 0.0002
P6366 Microsoft Academic ID 7
 0.0000
P2062 HSDB ID 6
 0.0010
P117 chemical structure 6
 0.0004
P10283 OpenAlex ID 6
 0.0001
P227 GND ID 6
 0.0000
P373 Commons category 6
 0.0000
P1931 NIOSH Pocket Guide ID 5
 0.0070
P4952 safety classification and labelling 5
 0.0035
P1578 Gmelin number 5
 0.0016
P1542 has effect 5
 0.0012
P7033 Australian Educational Vocabulary ID 5
 0.0006
P1579 Reaxys registry number 5
 0.0003
P2101 melting point 5
 0.0002
P486 MeSH descriptor ID 5
 0.0001
P592 ChEMBL ID 5
 0.0001
P527 has part or parts 5
 0.0000
P3078 standard enthalpy of formation 4
 0.0158
P2128 flash point 4
 0.0095
P2119 vapor pressure 4
 0.0063
P2102 boiling point 4
 0.0043
P3073 CosIng number 4
 0.0008
P1051 PSH ID 4
 0.0007
P3345 RxNorm ID 4
 0.0004
P1245 OmegaWiki Defined Meaning 4
 0.0003
P508 BNCF Thesaurus ID 4
 0.0002
P1014 Art & Architecture Thesaurus ID 4
 0.0002

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P876 UN packaging group 2
 0.2000
P2072 CDB Chemical ID 2
 0.0909
P2796 3DMet ID 1
 0.0909
P875 UN code classification 1
 0.0833
P2712 median lethal concentration (LC50) 1
 0.0625
P700 Kemler code 3
 0.0536
P2056 specific heat capacity 1
 0.0500
P2117 combustion enthalpy 1
 0.0476
P2075 speed of sound 3
 0.0455
P3071 standard molar entropy 3
 0.0429
P2199 autoignition temperature 3
 0.0405
P4842 ASHRAE refrigerant number 2
 0.0308
P5234 SpectraBase compound ID 1
 0.0185
P2203 upper flammable limit 3
 0.0159
P3078 standard enthalpy of formation 4
 0.0158
P695 UN number 7
 0.0138
P2202 lower flammable limit 3
 0.0134
P2084 ZINC ID 1
 0.0122
P5219 BMRB ID 1
 0.0112
P2240 median lethal dose (LD50) 1
 0.0109
P2405 ceiling exposure limit 2
 0.0107
P2260 ionization energy 3
 0.0099
P2128 flash point 4
 0.0095
P2177 solubility 3
 0.0072
P1931 NIOSH Pocket Guide ID 5
 0.0070
P2119 vapor pressure 4
 0.0063
P1109 refractive index 1
 0.0057
P2404 time-weighted average exposure limit 3
 0.0052
P657 RTECS number 8
 0.0047
P2054 density 7
 0.0047
P1117 pKa 1
 0.0046
P2107 decomposition point 1
 0.0044
P2102 boiling point 4
 0.0043
P5220 ICSC ID 7
 0.0042
P589 point group 1
 0.0036
P4952 safety classification and labelling 5
 0.0035
P1820 Open Food Facts food additive ID 1
 0.0028
P4149 conjugate base 1
 0.0028
P2129 immediately dangerous to life or health 1
 0.0025
P5076 Römpp online ID 3
 0.0019
P7025 HCIS ID 7
 0.0019
P4852 JECFA database ID 1
 0.0018
P628 E number 1
 0.0017
P1578 Gmelin number 5
 0.0016
P2167 UNSPSC Code 2
 0.0015
P5160 Thesaurus for Graphic Materials ID 1
 0.0013
P679 ZVG number 9
 0.0013
P1542 has effect 5
 0.0012
P6694 MeSH concept ID 1
 0.0012
P8248 Colon Classification 2
 0.0012