As of 2022-03-07, the Wikidata property UN number (P695) is used on 504 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 501
 0.0000
P231 CAS Registry Number 499
 0.0005
P662 PubChem CID 491
 0.0005
P235 InChIKey 489
 0.0004
P274 chemical formula 487
 0.0005
P234 InChI 487
 0.0004
P661 ChemSpider ID 486
 0.0039
P3117 DSSTox substance ID 485
 0.0006
P233 canonical SMILES 485
 0.0006
P232 EC number 483
 0.0087
P8494 DSSTOX compound identifier 482
 0.0006
P2566 ECHA InfoCard ID 478
 0.0086
P646 Freebase ID 475
 0.0001
P2067 mass 472
 0.0014
P6366 Microsoft Academic ID 456
 0.0017
P652 UNII 448
 0.0066
P679 ZVG number 414
 0.0572
P7049 AICS Chemical ID (former scheme) 394
 0.0238
P117 chemical structure 371
 0.0229
P657 RTECS number 360
 0.1945
P2062 HSDB ID 352
 0.0598
P527 has part or parts 311
 0.0005
P683 ChEBI ID 306
 0.0028
P4952 safety classification and labelling 302
 0.1872
P373 Commons category 288
 0.0001
P5220 ICSC ID 282
 0.1506
P2101 melting point 272
 0.0086
P592 ChEMBL ID 268
 0.0053
P7025 HCIS ID 260
 0.0661
P1579 Reaxys registry number 260
 0.0134
P2840 NSC number 241
 0.0022
P10283 OpenAlex ID 213
 0.0021
P4964 SPLASH 172
 0.0213
P665 KEGG ID 171
 0.0084
P2054 density 170
 0.0926
P1417 Encyclopædia Britannica Online ID 167
 0.0010
P2102 boiling point 166
 0.1325
P1578 Gmelin number 164
 0.0476
P1542 has effect 159
 0.0365
P6689 MassBank accession ID 154
 0.0136
P1931 NIOSH Pocket Guide ID 153
 0.1435
P486 MeSH descriptor ID 150
 0.0040
P2119 vapor pressure 144
 0.1453
P8408 KBpedia ID 140
 0.0036
P8224 molecular model or crystal lattice model 136
 0.0657
P3345 RxNorm ID 135
 0.0141
P227 GND ID 133
 0.0001
P2404 time-weighted average exposure limit 128
 0.1350
P18 image 122
 0.0000
P3073 CosIng number 110
 0.0201

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P657 RTECS number 360
 0.1945
P4952 safety classification and labelling 302
 0.1872
P5220 ICSC ID 282
 0.1506
P2119 vapor pressure 144
 0.1453
P1931 NIOSH Pocket Guide ID 153
 0.1435
P2404 time-weighted average exposure limit 128
 0.1350
P2129 immediately dangerous to life or health 107
 0.1349
P2260 ionization energy 95
 0.1348
P2102 boiling point 166
 0.1325
P2202 lower flammable limit 68
 0.1040
P2177 solubility 85
 0.1023
P2203 upper flammable limit 61
 0.0974
P2407 short-term exposure limit 55
 0.0943
P2128 flash point 78
 0.0929
P2054 density 170
 0.0926
P700 Kemler code 44
 0.0863
P3078 standard enthalpy of formation 58
 0.0836
P2405 ceiling exposure limit 52
 0.0823
P2240 median lethal dose (LD50) 37
 0.0672
P7025 HCIS ID 260
 0.0661
P8224 molecular model or crystal lattice model 136
 0.0657
P2062 HSDB ID 352
 0.0598
P1117 pKa 39
 0.0579
P2199 autoignition temperature 31
 0.0573
P679 ZVG number 414
 0.0572
P5076 Römpp online ID 106
 0.0546
P1109 refractive index 34
 0.0533
P7524 CA PROP 65 ID 65
 0.0511
P2300 minimal lethal dose 25
 0.0485
P1578 Gmelin number 164
 0.0476
P8491 AHECC 2017 ID 29
 0.0458
P8121 UM-BBD compound ID 58
 0.0421
P2201 electric dipole moment 22
 0.0409
P2075 speed of sound 22
 0.0406
P1542 has effect 159
 0.0365
P2107 decomposition point 25
 0.0359
P4842 ASHRAE refrigerant number 18
 0.0331
P3071 standard molar entropy 18
 0.0327
P1987 MCN code 30
 0.0251
P7049 AICS Chemical ID (former scheme) 394
 0.0238
P2072 CDB Chemical ID 12
 0.0237
P117 chemical structure 371
 0.0229
P4149 conjugate base 19
 0.0228
P3070 dynamic viscosity 12
 0.0225
P4964 SPLASH 172
 0.0213
P3073 CosIng number 110
 0.0201
P628 E number 20
 0.0188
P2085 Nikkaji ID 20
 0.0184
P2066 molar fusion enthalpy 9
 0.0174
P2115 NDF-RT ID 63
 0.0172