1.0 2010-04-08 22:05:57 UTC 2025-11-18 22:53:52 UTC FDB003774 Hafnium Hafnium, also known as 72hf or hafnio, is a member of the class of compounds known as homogeneous transition metal compounds. Homogeneous transition metal compounds are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom. Hafnium can be found in a number of food items such as common hazelnut, almond, cucumber, and spinach, which makes hafnium a potential biomarker for the consumption of these food products. Hafnium can be found primarily in saliva and urine. Hafnium is a chemical element with symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1923, by Coster and Hevesy, making it the last stable element to be discovered. Hafnium is named after Hafnia, the Latin name for Copenhagen, where it was discovered . Celtium Hafnio Hafnium and compounds Hafnium powder, dry [UN2545] [Spontaneously combustible] Hafnium, elemental Hafnium, Isotope Of Mass 178 HAFNIUM, POWDER, 99.4% HF Hf 178.49 179.94654876 hafnium hafnium 7440-58-6 [Hf] InChI=1S/Hf VBJZVLUMGGDVMO-UHFFFAOYSA-N belongs to the class of inorganic compounds known as homogeneous transition metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom. Homogeneous transition metal compounds Inorganic compounds Homogeneous metal compounds Homogeneous transition metal compounds Homogeneous transition metal titanium group element atom logp 0 ChemAxon iupac hafnium ChemAxon average_mass 178.49 ChemAxon mono_mass 179.94654876 ChemAxon smiles [Hf] ChemAxon formula Hf ChemAxon inchi InChI=1S/Hf ChemAxon inchikey VBJZVLUMGGDVMO-UHFFFAOYSA-N ChemAxon polar_surface_area 0 ChemAxon refractivity 0 ChemAxon polarizability 1.78 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 0 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 90975 Specdb::MsMs 90976 Specdb::MsMs 90977 Specdb::MsMs 154260 Specdb::MsMs 154261 Specdb::MsMs 154262 HMDB0029201 33343 Almond Type 1 specific Prunus dulcis 3755 0.004 0.004 0.004 mg/100 g Black walnut Type 1 specific Juglans nigra 16719 0.01 0.01 0.01 mg/100 g Broccoli Type 1 specific Brassica oleracea var. italica 36774 0.000355 0.00051 0.0002 mg/100 g Carrot Type 1 specific Daucus carota ssp. sativus 79200 0.000055 0.00006 0.00005 mg/100 g Cashew nut Type 1 specific Anacardium occidentale 171929 0.002 0.002 0.002 mg/100 g Common hazelnut Type 1 specific Corylus avellana 13451 0.01 0.01 0.01 mg/100 g Cucumber Type 1 specific Cucumis sativus 3659 0.0 0.0 0.0 mg/100 g Dill Type 1 specific Anethum graveolens 40922 0.000065 0.00008 0.00005 mg/100 g Eggplant Type 1 specific Solanum melongena 4111 0.00002 0.00002 0.00002 mg/100 g Garden tomato Type 1 specific Solanum lycopersicum 4081 0.00005 0.00007 0.00003 mg/100 g Garlic Type 1 specific Allium sativum 4682 0.00011 0.00012 0.0001 mg/100 g Green bell pepper Type 1 specific Capsicum annuum 4072 0.00004 0.00005 0.00003 mg/100 g Green zucchini Type 1 specific Cucurbita pepo var. cylindrica 0.000172 0.000184215 0.000159085 mg/100 g Italian sweet red pepper Type 1 specific Capsicum annuum 4072 0.0001 0.0001 0.0001 mg/100 g Japanese pumpkin Type 1 specific Cucurbita maxima 3661 0.0 0.0 0.0 mg/100 g Parsnip Type 1 specific Pastinaca sativa 4041 0.000078 0.00007944 0.00007595 mg/100 g Potato Type 1 specific Solanum tuberosum 4113 0.0001 0.0001 0.0001 mg/100 g Red beetroot Type 1 specific Beta vulgaris var. rubra 0.000045 0.00005 0.00004 mg/100 g Romaine lettuce Type 1 specific Lactuca sativa L. var. longifolia 0.0001 0.0001 0.0001 mg/100 g Spinach Type 1 specific Spinacia oleracea 3562 0.0001 0.0001 0.0001 mg/100 g Turnip Type 1 specific Brassica rapa var. rapa 51350 0.00009 0.00012 0.00006 mg/100 g White cabbage Type 1 specific Brassica oleracea L. var. capitata L. f. alba DC. 0.00004 0.00005 0.00003 mg/100 g Yellow zucchini Type 1 specific Cucurbita pepo var. cylindrica 0.0 0.0 0.0 mg/100 g