NickelCobaltCompoundsMetalsTrivalent ChromiumHexavalent chromiumAmount of chromiumOxidationTitanium1797InsolublePowderAluminiumSodiumImplantsChromiteStentsDensityLustrousCommerciallyChromic acidMetabolismTypicallyFumeBulkLiquid-heliumReactionsMetalSiliconRegulationsCryostats madeStainless steelAmountsFoodsMolecularCompoundAbundantReadilySaltsDiabetesSupplementsSymbolMineralSourceMice
Nickel16
- ISO 5832-7:2016 specifies the characteristics of, and corresponding test methods for, forgeable and cold-formed cobalt-chromium-nickel-molybdenum-iron alloy for use in the manufacture of surgical implants. (iso.org)
- According to X rays, chromium sulfide consists primarily of nickel arsenide (1 stoichiometric proportion) and cadmium OH2 (1 stoichiometric relation). (mis-asia.com)
- This is a thin foil of chromium electroplated on nickel foil, from the Flex-n-Gate manufacturing plant in Urbana, Illinois. (theodoregray.com)
- He said he would check around for some samples, and later that day I went back to pick up an envelope containing this flake for chromium and two very nice chunks of nickel (see). (theodoregray.com)
- Unfortunately, while they receive nickel in metallic form, chromium arrives in the form of chromic acid because that is more convenient for electroplating. (theodoregray.com)
- He explained that bumpers are actually not primarily plated with chromium but rather with nickel. (theodoregray.com)
- They electroplate 0.0010" of semi-bright nickel, 0.0003" of bright nickel, and only 0.000000066" of chromium onto the base of steel. (theodoregray.com)
- We periodically collect samples of Tube dust and analyse its content to track levels of potentially harmful materials, including iron, chromium and nickel. (independent.co.uk)
- This product can expose you to Nickel(Metallic), a chemical known to the State of California to cause Cancer. (omega.com)
- OMEGA™ NIC80 wire is a resistance heating wire comprised of 80% Nickel and 20% Chromium. (omega.com)
- Description: ISO 5832-5:2005 specifies the characteristics of, and corresponding test methods for, wrought cobalt -chromium-tung sten-nickel alloy for use in the manufacture of surgical implants. (globalspec.com)
- [ 4 ] The metals most commonly used in orthopedic and dental implants are stainless steel (with nickel), cobalt, chromium, and titanium. (medscape.com)
- 17% of women and 3% of men are allergic to nickel, and 1-2% of people are allergic to cobalt, chromium, or both. (medscape.com)
- Released nanoparticles and ions derived from commonly used metal implants consist, among others, of cobalt, nickel, and chromium. (bvsalud.org)
- These effects were most prominent in motoneurons treated with 500 µM of cobalt or nickel, in which we observed significant cell death, whereas chromium showed fewer ROS and no apparent impairment of motoneurons. (bvsalud.org)
- In CD1 mice, in 49 ( IARC, 1990) for chromium and and the methylated arsenic species utero exposure via maternal con- nickel. (who.int)
Cobalt6
- Stainless steel Charnley stem (left) and a cobalt-chromium Mueller (right). (medscape.com)
- [ 5 ] They were then replaced by cobalt-chromium adapters. (medscape.com)
- They added that with a cobalt-chromium neck, micromotions can be reduced by a factor of 3 and the incidence of fretting corrosion substantially lowered. (medscape.com)
- Cobalt chrome is a metallic alloy of cobalt and chromium. (justmensrings.com)
- Description: Wear Resistant (Co-Cr-W) Cobalt 6B is a cobalt based chromium, tungsten alloy for wear environments where seizing, galling and abrasion are present. (globalspec.com)
- For patients who received the Absorb stent, the primary end point of target lesion failure at 12 months was 4.2% compared with 3.8% among patients who received the everolimus-eluting stent with a nonabsorbable cobalt- chromium scaffold ( Xience , Abbott Vascular), a difference that was not statistically significant. (medscape.com)
Compounds6
- The data presented in Table 5-1 are for chromium metal and the data from Table 5-2 are for all chromium compounds. (cdc.gov)
- The major manufacturers of chromium compounds in 2007 are summarized in Table 5-3 (SRI 2007). (cdc.gov)
- The trivalent form, Cr(III), is the most stable oxidation state of chromium and compounds/complexes containing Cr(III) are common in natural systems ( Vaiopoulou & Gikas 2012 ). (iwaponline.com)
- In anything other than trace amounts, chromium compounds should be regarded as highly toxic. (webelements.com)
- Binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and other compounds of chromium where known. (webelements.com)
- from the Greek word " chroma " meaning " colour ", named for the many coloured compounds known for chromium. (webelements.com)
Metals6
- If you use supplements containing metals, including iron or zinc, you may notice a metallic taste in your mouth. (healthline.com)
- The extensive use in modern times of metallic alloys is related to the availability and success at the beginning of the 20th century of several different alloys made of the noble metals. (medscape.com)
- ABSTRACT: Future corrosion and wear protection of structural metals on on military aircraft and weapon systems will require advanced development of metallic and composite materials that are not restricted with respect to environment, safety and occupational health regulations. (sbir.gov)
- The EU metallic minerals sector produces a wide range of ores yielding metals or metallic substances. (europa.eu)
- In addition, a variety of substances such as fuel, water, antifreeze, dust, and various combustion products such as polycyclic aromatic hydrocarbons (PAHs), metals, and metallic oxides accumulate in the oil. (cdc.gov)
- Metals are agents that consist of metallic poisons. (cdc.gov)
Trivalent Chromium1
- Ferrous reduces hexavalent chromium to insoluble trivalent chromium, which can be readily settled out of waste streams as a particulate. (iwaponline.com)
Hexavalent chromium20
- Hexavalent chromium has become a hot topic in the thermal spray community and among welders. (donaldson.com)
- Useful search terms for hexavalent chromium include 'chromate' and 'chrome six. (donaldson.com)
- New OSHA regulations are forcing everyone to take a close look at their processes and implement changes to them or install engineering controls to help reduce hexavalent chromium exposure. (donaldson.com)
- What is hexavalent chromium? (donaldson.com)
- What industrial processes produce hexavalent chromium? (donaldson.com)
- What does hexavalent chromium do to the body? (donaldson.com)
- What are employers and employees required to do if hexavalent chromium is in the facility? (donaldson.com)
- and 3) Hexavalent Chromium , typically from industrial processes like welding and thermal spray. (donaldson.com)
- Hexavalent Chromium is the most toxic form of chromium. (donaldson.com)
- Reading through articles and publications, you will see hexavalent chromium identified in different ways, including: Hex Chrome, Chromium (VI), Cr(VI), and Cr 6+. (donaldson.com)
- The Occupational Safety & Health Administration (OSHA) has defined two levels of exposure for hexavalent chromium: a Permissible Exposure Limit (PEL) and an Action Level (AL). (donaldson.com)
- The current PEL for hexavalent chromium is 5 µg/m3 for a single employee over an 8-hr shift. (donaldson.com)
- Where Does Hexavalent Chromium Come From? (donaldson.com)
- There are a variety of industrial processes that can produce hexavalent chromium. (donaldson.com)
- Hexavalent chromium may be present in a feedstock containing any form of chromium. (donaldson.com)
- In your facility, you may be producing a dust, fume, or mist that contains hexavalent chromium. (donaldson.com)
- It is important to realize hexavalent chromium has its own recommended threshold limit value (TLV) as established by the American Conference of Industrial Hygienists (ACGIH), and that this value may be lower than other components present as airborne contaminants. (donaldson.com)
- Because hexavalent chromium is usually only a percentage of the dust fume and mist generated from a process, it may be worth investigating the percent contribution of Cr(VI) verse other materials in the airstream. (donaldson.com)
- Hexavalent chromium is difficult to remove during conventional biological wastewater treatment. (iwaponline.com)
- Hexavalent chromium is of particular concern because of its aquatic toxicity, and an increasing number of wastewater works have effluent discharge limits to protect receiving water courses, some as low as 8 μg Cr L −1 . (iwaponline.com)
Amount of chromium2
- There is limited information about the exact amount of chromium required, and what it does, as studies have so far produced conflicting results. (medicalnewstoday.com)
- Chromium sulfide can be produced by combining a stoichiometric amount of chromium powder with sulfur powder at a temperature of 1000degC. (mis-asia.com)
Oxidation3
- Chromium (Cr) is an abundant and useful transition metal, considered a micronutrient in its trivalent form and employed in a multitude of industrial processes in its other oxidation states (especially the hexavalent), due to its hardness and resistance to tarnishing. (iwaponline.com)
- Oxidation of this ore by air in molten alkali gives sodium chromate, Na 2 CrO 4 in which the chromium is in the +6 oxidation state. (webelements.com)
- They are known for their ability to form multiple oxidation states and their characteristic metallic properties. (proprofs.com)
Titanium1
17972
- Chromium was discovered by Louis-Nicholas Vauquelin in 1797 at France. (webelements.com)
- Chromium was discovered in 1797. (proprofs.com)
Insoluble1
- Chromium sulfide, a brownish-black solid, is insoluble in water. (mis-asia.com)
Powder5
- Inorganic compound, Cr2S3, is also known as chromium sulfur dioxide powder. (mis-asia.com)
- Chromium-Sulfide Powder Cr2S3 will not perform well if it is damp. (mis-asia.com)
- Chromium sulfide Cr2S3 powder packing: vacuum packaging, 100g/bag, 500g/bag or 1kg/bag. (mis-asia.com)
- As soon as you receive payment, the Chromium Sulfide powder Cr2S3 can be shipped by air or sea. (mis-asia.com)
- This is a nice dense granular powder of metallic chromium. (theodoregray.com)
Aluminium4
- A relatively simple improvement to the removal of chromium could be made by switching the aluminium or ferric solution dosed at most treatment works for the removal of solids, organic load and phosphorus, to a ferrous salt. (iwaponline.com)
- Emerald is a form of beryl (a beryllium aluminium silicate) which is green because of the inclusion of a little chromium into the beryl crytal lattice in place of some of the aluminium ions. (webelements.com)
- Similarly, traces of chromium incorporated into the crystal lattice of corundum (crystalline aluminium oxide, Al 2 O 3 ) as a replacement for some of the Al 3+ ions results in another highly coloured gem stone, in this case the red ruby. (webelements.com)
- The oxide is then further reduced with aluminium or silicon to form chromium metal. (webelements.com)
Sodium1
- La teneur faible en ions calcium et magnésium et élevée en ions sodium de l'eau douce affecte négativement les résultats de la coloration de routine à l'hématoxyline-éosine. (who.int)
Implants1
- Clinical studies have demonstrated that such metallic alloys can be used safely and effectively in the manufacturing of orthopedic implants that are left in vivo for extended periods. (medscape.com)
Chromite2
- Chromium metal is commercially produced in the United States by the reduction of chromite ore with carbon, aluminum, or silicon, and subsequent purification. (cdc.gov)
- The most useful source of chromium commercially is the ore chromite, FeCr 2 O 4 . (webelements.com)
Stents3
- Still, he suspects metallic stents in the coronary arteries "will be a minority in 2020. (medscape.com)
- Dr Steen Kristensen (Aarhus University Hospital, Denmark), the discussant following the late-breaking clinical-trials presentation, who wrote an editorial accompanying the study's publication in European Heart Journal [ 3 ] , said the new stents have the benefit of delivering the drug and then disappearing, changing a "coronary intervention from treatment with a permanent metallic stent to a resorbable cure. (medscape.com)
- At the present time, the bioabsorbable scaffold might offer a clinical advantage, and with that the use of metallic stents might wane in the future, but "we currently do not know," said Kristensen. (medscape.com)
Density1
- Chromium sulfide Density (g/mL): 3.972 g/cm3 for the trigonometric system, and 3.922g/cm3 for the orthorhombic system. (mis-asia.com)
Lustrous1
- With electron configuration [Ar] 3d54s1, atomic number 24, and symbol Cr, chromium is a high-melting-point metal which is lustrous, steely-grey, brittle, and hard. (proprofs.com)
Commercially1
- it is not normally necessary to make chromium in the laboratory as it is so readily available commercially. (webelements.com)
Chromic acid1
- In fact even though thousands of tons of chromium are mined and plated onto products every year, almost none of it ever exists as lumps of solid chromium: It is turned into chromic acid as it is extracted from the ore, then shipped to electroplating companies in that form. (theodoregray.com)
Metabolism3
- Chromium is an essential trace mineral with various benefits, including improving insulin sensitivity and enhancing protein, carbohydrate, and lipid metabolism. (medicalnewstoday.com)
- Chromium is an essential trace element and has a role in glucose metabolism. (webelements.com)
- Cr-53 and Cr-54 are used for the study of chromium metabolism and studies into (adult) diabetes. (webelements.com)
Typically1
- Chromium sulfides, which range in formula from CrS to Cr0.67S Cr2S3, are typically nonstoichiometric. (mis-asia.com)
Fume1
- May release chromium oxide fume if involved in a fire. (espimetals.com)
Bulk2
- and stainless steel represent the bulk of the market for chromium. (cdc.gov)
- While everyone has seen chromium plated objects, bulk solid chromium is very uncommon. (theodoregray.com)
Liquid-helium1
- Custom-designed cryostats made of metal and non metallic materials (e.g. glass-reinforced plastics (GRP) or carbon fiber) have been developed for cooling of sensors with liquid nitrogen or liquid helium. (ilkdresden.de)
Reactions1
- Chromium Sulfide in Water will undergo double hydrolysis reactions to produce chromium Hydroxide, HS and even H2S. (mis-asia.com)
Metal2
- Chromium is classified as a transition metal. (proprofs.com)
- In those countries, metal mining contributes more than 1% to the global production of a particular metallic mineral. (europa.eu)
Silicon1
- or even non-metallic elements such as silicon. (wikipedia.org)
Regulations1
- According to the Food Adulteration (Metallic Contamination) Regulations (Cap 132V), any person who sells food with metallic contamination above the legal limit may be prosecuted and is liable upon conviction to a fine of $50,000 and imprisonment for six months. (gov.hk)
Cryostats made1
- ILK Dresden developed low noise magnetic field and non metallic helium cryostats made of GRP (glass reinforced plastics) with a high helium and vacuum holding time. (ilkdresden.de)
Stainless steel1
- Chromium exhibits these properties and is commonly used in various industrial applications, such as in the production of stainless steel and other alloys. (proprofs.com)
Amounts1
Foods2
- According to a 2021 literature review , you may also experience a metallic sensation after eating foods that have been fortified with these minerals. (healthline.com)
- After considering the factors for dried foods, the sample contained chromium at a level of 0.56 parts per million. (gov.hk)
Molecular2
- Chromium sulfide has a molecular structure that varies from Crs to Cr0.67S, which is equivalent to Cr2S3. (mis-asia.com)
- metallic elements of relatively high molecular weight [41]. (iupac.org)
Compound2
- Chromium(III), sulfide, is an inorganic chemical compound that has the formula Cr2S3. (mis-asia.com)
- Inorganic compound of the formula Cr2S3, chromium (III) sulfide. (mis-asia.com)
Abundant1
- Chromium is ranked ____ of the most abundant elements in Earth's crust with an average concentration of 100 ppm. (proprofs.com)
Readily1
- Metallic sulfate is readily soluble and used to treat water. (mis-asia.com)
Salts1
- The slides metallic salts. (who.int)
Diabetes4
- Past research was unable to confirm that supplemental chromium could benefit people with impaired glucose tolerance and type 2 diabetes, but more recent studies indicate that it may help in managing diabetes , reducing levels of blood lipids, enhancing weight loss, and improving body composition. (medicalnewstoday.com)
- In one study, 96 patients with type 2 diabetes took either 400 micrograms (mcg) a day of chromium picolinate, 200 mcg a day, or a placebo . (medicalnewstoday.com)
- Those who took 400 mcg daily saw improvements in endothelial function, lipid profile, and biomarkers of oxidative stress , suggesting that chromium picolinate could benefit patients with type 2 diabetes. (medicalnewstoday.com)
- If so, chromium supplements could help improve heart health, especially in those with diabetes. (medicalnewstoday.com)
Supplements2
- Recent results suggest that chromium picolinate supplements may have benefits for some people, but experts recommend diet, rather than supplements, as the best source of chromium. (medicalnewstoday.com)
- Chromium supplements may enhance muscle mass, weight loss, and glucose control, but researchers are still working to confirm this. (medicalnewstoday.com)
Symbol1
- 4s 1 and the term symbol of chromium is 7 S 3 . (webelements.com)
Mineral2
- Chromium is a mineral that humans need in very small quantities. (medicalnewstoday.com)
- Chromium was discovered as an element after it came to the attention of the Western world in the red crystalline mineral crocoite (lead(II) chromate), discovered in. (proprofs.com)
Source1
- Chromium sulfur is a source of chromium that is acid-soluble, moderately water-soluble, and compatible with sulfates. (mis-asia.com)
Mice1
- Findings published in 2017 in Nature , suggest that chromium picolinate, combined with statin medications, might help reduce the symptoms of atherosclerosis in mice. (medicalnewstoday.com)