1.0 2010-04-08 22:06:09 UTC 2025-11-18 22:55:40 UTC FDB004261 Cerium Cerium, also known as 58ce or cer, is a member of the class of compounds known as homogeneous lanthanide compounds. Homogeneous lanthanide compounds are inorganic compounds containing only metal atoms, with the largest atom being a lanthanide atom. Cerium can be found in a number of food items such as black-eyed pea, cucumber, spinach, and orange bell pepper, which makes cerium a potential biomarker for the consumption of these food products. Cerium can be found primarily in blood, cerebrospinal fluid (CSF), saliva, and urine. Cerium is a chemical element with symbol Ce and atomic number 58. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Cerium is the second element in the lanthanide series, and while it often shows the +3 oxidation state characteristic of the series, it also exceptionally has a stable +4 state that does not oxidize water. It is also traditionally considered one of the rare-earth elements. Cerium has no biological role and is not very toxic . CE Ceria Ceric dioxide Ceric oxide CERIC OXIDE, CeO2.XH2O Ceric oxide, ceria Cerium dioxide Cerium oxide Cerium oxide (Ce2O3) Cerium oxide (CeO2) Cerium sesquioxide Cerium trioxide Cerium, crude Cerium(4+) oxide Cerium(III) oxide Cerium(IV) oxide Cerium(IV) oxide, dispersion Cerium(IV)dioxide Cerous oxide Dicerium trioxide Molycomp 5310 Needlal Needlal U15 Needlal W10-01 Needlal W15 Nidoral Opaline Ce 140.116 139.905434035 cerium cerium 7440-45-1 [Ce] InChI=1S/Ce GWXLDORMOJMVQZ-UHFFFAOYSA-N belongs to the class of inorganic compounds known as homogeneous lanthanide compounds. These are inorganic compounds containing only metal atoms, with the largest atom being a lanthanide atom. Homogeneous lanthanide compounds Inorganic compounds Homogeneous metal compounds Homogeneous lanthanide compounds Homogeneous lanthanide f-block element atom lanthanoid atom logp 0 ChemAxon iupac cerium ChemAxon average_mass 140.116 ChemAxon mono_mass 139.905434035 ChemAxon smiles [Ce] ChemAxon formula Ce ChemAxon inchi InChI=1S/Ce ChemAxon inchikey GWXLDORMOJMVQZ-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 101553 Specdb::MsMs 101554 Specdb::MsMs 101555 Specdb::MsMs 167196 Specdb::MsMs 167197 Specdb::MsMs 167198 HMDB0013672 37262 Black walnut Type 1 specific Juglans nigra 16719 0.04 0.04 0.04 mg/100 g Black-eyed pea Type 1 specific Vigna unguiculata ssp. unguiculata 3920 Brazil nut Type 1 specific Bertholletia excelsa 3645 0.12 0.12 0.12 mg/100 g Broccoli Type 1 specific Brassica oleracea var. italica 36774 0.0003 0.0004 0.0002 mg/100 g Carrot Type 1 specific Daucus carota ssp. sativus 79200 0.0001 0.0001 0.0001 mg/100 g Cow milk, pasteurized, vitamin A + D added, 0% fat Type 2 specific Cow milk, pasteurized, vitamin A + D added, 1% fat Type 2 specific Cow milk, pasteurized, vitamin A + D added, 2% fat Type 2 specific Cow milk, pasteurized, vitamin D added, 3.25% fat Type 2 specific Cucumber Type 1 specific Cucumis sativus 3659 0.000019 0.00003016 0.0 mg/100 g Dill Type 1 specific Anethum graveolens 40922 0.00035 0.0004 0.0003 mg/100 g Eggplant Type 1 specific Solanum melongena 4111 0.000035 0.00004 0.00003 mg/100 g Garden onion Type 1 specific Allium cepa 4679 0.000057 0.00006548 0.00004822 mg/100 g Garden tomato Type 1 specific Solanum lycopersicum 4081 0.00003 0.00004 0.00002 mg/100 g Garden tomato (var.) Type 1 specific Solanum lycopersicum var. lycopersicum 397755 3.35 3.35 3.35 mg/100 g Garlic Type 1 specific Allium sativum 4682 0.0001 0.0001 0.0001 mg/100 g Green bell pepper Type 1 specific Capsicum annuum 4072 0.00013 0.00014 0.00012 mg/100 g Green zucchini Type 1 specific Cucurbita pepo var. cylindrica 0.000043 0.00004582 0.00004015 mg/100 g Italian sweet red pepper Type 1 specific Capsicum annuum 4072 0.00005 0.00006 0.00004 mg/100 g Japanese pumpkin Type 1 specific Cucurbita maxima 3661 0.0001 0.0001 0.0001 mg/100 g Milk (Cow) Type 2 specific 0.004928 0.007 0.004 uM Orange bell pepper Type 1 specific Capsicum annuum 4072 0.000084 0.00008878 0.00007829 mg/100 g Parsnip Type 1 specific Pastinaca sativa 4041 0.000154 0.000154209 0.00015338 mg/100 g Potato Type 1 specific Solanum tuberosum 4113 0.00035 0.0005 0.0002 mg/100 g Red beetroot Type 1 specific Beta vulgaris var. rubra 0.0006 0.0006 0.0006 mg/100 g Red bell pepper Type 1 specific Capsicum annuum 4072 0.00005 0.00005093 0.00004871 mg/100 g Romaine lettuce Type 1 specific Lactuca sativa L. var. longifolia 0.000195 0.000215724 0.000168215 mg/100 g Spinach Type 1 specific Spinacia oleracea 3562 0.00265 0.0032 0.0021 mg/100 g Sunburst squash (pattypan squash) Type 1 specific Cucurbita pepo var. clypeata 0.000084 0.0001 0.00005522 mg/100 g Turnip Type 1 specific Brassica rapa var. rapa 51350 0.0002 0.0002 0.0002 mg/100 g White cabbage Type 1 specific Brassica oleracea L. var. capitata L. f. alba DC. 0.00007 0.00008 0.00006 mg/100 g Yellow bell pepper Type 1 specific Capsicum annuum 4072 0.000057 0.00006343 0.00005143 mg/100 g Yellow zucchini Type 1 specific Cucurbita pepo var. cylindrica 0.0001 0.0001 0.0001 mg/100 g