As of 2022-03-07, the Wikidata property E number (P628) is used on 581 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
P31 instance of 535
 0.0000
P231 CAS Registry Number 444
 0.0005
P646 Freebase ID 421
 0.0001
P232 EC number 414
 0.0074
P2566 ECHA InfoCard ID 410
 0.0074
P3117 DSSTox substance ID 409
 0.0005
P652 UNII 404
 0.0059
P6366 Microsoft Academic ID 385
 0.0014
P366 has use 364
 0.0046
P662 PubChem CID 363
 0.0004
P274 chemical formula 363
 0.0003
P235 InChIKey 357
 0.0003
P234 InChI 356
 0.0003
P7049 AICS Chemical ID (former scheme) 351
 0.0211
P661 ChemSpider ID 349
 0.0028
P233 canonical SMILES 345
 0.0004
P2067 mass 336
 0.0010
P8494 DSSTOX compound identifier 323
 0.0004
P1820 Open Food Facts food additive ID 296
 0.4676
P3073 CosIng number 287
 0.0534
P117 chemical structure 284
 0.0173
P683 ChEBI ID 262
 0.0024
P527 has part or parts 261
 0.0004
P2062 HSDB ID 228
 0.0375
P3345 RxNorm ID 221
 0.0231
P679 ZVG number 214
 0.0285
P592 ChEMBL ID 208
 0.0041
P10283 OpenAlex ID 207
 0.0021
P373 Commons category 207
 0.0001
P715 DrugBank ID 175
 0.0139
P486 MeSH descriptor ID 172
 0.0046
P665 KEGG ID 171
 0.0084
P1579 Reaxys registry number 151
 0.0077
P1417 Encyclopædia Britannica Online ID 147
 0.0009
P279 subclass of 145
 0.0001
P2840 NSC number 139
 0.0012
P4952 safety classification and labelling 135
 0.0727
P2115 NDF-RT ID 130
 0.0354
P2017 isomeric SMILES 127
 0.0004
P1014 Art & Architecture Thesaurus ID 117
 0.0048
P8408 KBpedia ID 111
 0.0029
P18 image 109
 0.0000
P2101 melting point 107
 0.0034
P5220 ICSC ID 105
 0.0494
P2868 subject has role 105
 0.0003
P2892 UMLS CUI 104
 0.0041
P657 RTECS number 100
 0.0457
P1343 described by source 99
 0.0001
P3417 Quora topic ID 98
 0.0005
P703 found in taxon 96
 0.0000

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P1820 Open Food Facts food additive ID 296
 0.4676
P4952 safety classification and labelling 135
 0.0727
P5930 Open Food Facts ingredient ID 82
 0.0545
P3073 CosIng number 287
 0.0534
P5220 ICSC ID 105
 0.0494
P2027 Colour Index International constitution ID 33
 0.0476
P657 RTECS number 100
 0.0457
P5076 Römpp online ID 77
 0.0376
P2062 HSDB ID 228
 0.0375
P2054 density 72
 0.0358
P2115 NDF-RT ID 130
 0.0354
P2119 vapor pressure 39
 0.0332
P2404 time-weighted average exposure limit 37
 0.0332
P2107 decomposition point 25
 0.0323
P2102 boiling point 46
 0.0317
P1931 NIOSH Pocket Guide ID 39
 0.0310
P2177 solubility 29
 0.0301
P8491 AHECC 2017 ID 21
 0.0292
P679 ZVG number 214
 0.0285
P2167 UNSPSC Code 46
 0.0247
P3078 standard enthalpy of formation 19
 0.0235
P1117 pKa 18
 0.0233
P3345 RxNorm ID 221
 0.0231
P7049 AICS Chemical ID (former scheme) 351
 0.0211
P2129 immediately dangerous to life or health 20
 0.0209
P4842 ASHRAE refrigerant number 13
 0.0208
P2075 speed of sound 13
 0.0207
P267 ATC code 87
 0.0206
P3071 standard molar entropy 13
 0.0206
P1987 MCN code 26
 0.0204
P1578 Gmelin number 71
 0.0196
P8224 molecular model or crystal lattice model 43
 0.0192
P695 UN number 20
 0.0188
P2260 ionization energy 16
 0.0186
P10077 Spanish Cultural Heritage thesauri ID 42
 0.0174
P117 chemical structure 284
 0.0173
P4149 conjugate base 15
 0.0164
P2085 Nikkaji ID 19
 0.0163
P1109 refractive index 11
 0.0149
P9635 electronic Essential Medicines List medicine ID 12
 0.0146
P715 DrugBank ID 175
 0.0139
P2175 medical condition treated 35
 0.0135
P2057 Human Metabolome Database ID 89
 0.0134
P7025 HCIS ID 56
 0.0133
P8121 UM-BBD compound ID 19
 0.0127
P2202 lower flammable limit 10
 0.0127
P2203 upper flammable limit 9
 0.0119
P2004 NALT ID 81
 0.0114
P3070 dynamic viscosity 7
 0.0114
P8061 AGROVOC ID 25
 0.0110