American Elements specializes in producing high purity Holmium discs with the highest possible density and smallest possible average grain sizes for use in semiconductor, chemical vapor deposition (CVD) and physical vapor deposition (PVD) display and optical applications. Our standard disc sizes range from 1" to 8" in diameter and from 2mm to 1/2" thick. We can also provide Discs outside this range. Materials are produced using crystallization, solid state and other ultra high purification processes such as sublimation. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into rod, bar or plate form, as well as other machined shapes and through other processes such as nanoparticles (See also application discussion at Nanotechnology Information and at Quantum Dots) and in the form of solutions and organometallics. We also produce Holmium as rod, pellets, powder, pieces, granules, ingot, wire, and in compound forms, such as oxide. Other shapes are available by request.
Holmium is a Block F, Group 3, Period 6 element. The electronic configuration is [Xe]4f116s2. In its elemental form holmium's CAS number is 7440-60-0. The holmium atom has a radius of 174.3.pm and it's Van der Waals radius is unknown. Holmium has the highest magnetic moment (10.6µB) of any naturally occurring element. Because of this it has been used to create the highest known magnetic fields by placing it within high strength magnets as a pole piece or magnetic flux concentrator. This magnetic property also has value in yttrium-iron-garnet (YIG) lasers for microwave equipment. Holmium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Holmium lases at a human eye safe 2.08 microns allowing its use in a variety of medical and dental applications in both yttrium-aluminum-garnet (YAG) and yttrium-lanthanum-fluoride (YLF) solid state lasers. The wavelength allows for use in silica fibers designed for shorter wavelengths while still providing the cutting strength of longer wave length equipment. |
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Periodic table of the elements science and academic information, elements and advanced materials data, scientific presentations and all pages, designs, concepts, logos, and color schemes herein are the copyrighted proprietary rights and intellectual property of American Elements. American Elements is a U.S. Registered Trademark. © 2001-2009. American Elements. All rights reserved. |
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Recent Research & Development for Holmium
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Percutaneous endoscopic holmium laser lithotripsy for management of complicated biliary calculi.
Healy K, Chamsuddin A, Spivey J, Martin L, Nieh P, Ogan K.
JSLS. 2009 Apr-Jun;13(2):184-9.
PMID: 19660213 [PubMed - in process]
- Words of wisdom. Re: Holmium laser enucleation of the prostate: results at 6 years.
Krambeck AE, Lingeman JE.
Eur Urol. 2009 Mar;55(3):749. No abstract available.
PMID: 19650210 [PubMed - in process]
- High-power and highly efficient diode-cladding-pumped holmium-doped fluoride fiber laser operating at 2.94 mum.
Jackson SD.
Opt Lett. 2009 Aug 1;34(15):2327-9.
PMID: 19649086 [PubMed - in process]
- [Effect of extracorporeal shock-wave lithotripsy on residual stones after different methods of surgery.]
Zhang L, Peng F, Yang L, Zhao X, Yang J, Zhang X.
Zhong Nan Da Xue Xue Bao Yi Xue Ban. 2009 Jul;34(7):634-7. Chinese.
PMID: 19648676 [PubMed - in process]
- Percutaneous nephrostolithotomy versus flexible ureteroscopy/holmium laser lithotripsy: cost and outcome analysis.
Hyams ES, Shah O.
J Urol. 2009 Sep;182(3):1012-7. Epub 2009 Jul 18.
PMID: 19616804 [PubMed - in process]
- The relationship between the reproducibility of holmium laser enucleation of the prostate and prostate size over the learning curve.
Haraguchi T, Takenaka A, Yamazaki T, Nakano Y, Miyake H, Tanaka K, Kuwayama M, Takechi Y, Fujisawa M.
Prostate Cancer Prostatic Dis. 2009 Jul 7. [Epub ahead of print]
PMID: 19581921 [PubMed - as supplied by publisher]
- [Administration of radioactive holmium-166 microsphere in domestic animals with inoperable tumors]
Van de Bovenkamp CG, Meij BP, Stassen QE, Nijsen JF, Kirpensteijn J.
Tijdschr Diergeneeskd. 2009 Jun 15;134(12):532-3. Dutch. No abstract available.
PMID: 19579383 [PubMed - indexed for MEDLINE]
- Safety of holmium laser enucleation of the prostate in anticoagulated patients.
Tyson MD, Lerner LB.
J Endourol. 2009 Aug;23(8):1343-6.
PMID: 19575692 [PubMed - in process]
- Holmium:YAG Laser Lithotripsy for Urolithiasis in Horses.
Grant DC, Westropp JL, Shiraki R, Ruby AL.
J Vet Intern Med. 2009 Jul 1. [Epub ahead of print]
PMID: 19572912 [PubMed - as supplied by publisher]
- Comparison of TURP, TUVRP, and HoLEP.
Gupta NP, Anand A.
Curr Urol Rep. 2009 Jul;10(4):276-8.
PMID: 19570488 [PubMed - in process]
- Management of chronic unilateral hematuria by ureterorenoscopy.
Brito AH, Mazzucchi E, Vicentini FC, Danilovic A, Chedid Neto EA, Srougi M.
J Endourol. 2009 Aug;23(8):1273-6.
PMID: 19566410 [PubMed - in process]
- [Treatment of ureteral obstruction by holmium: YAG laser endoureterotomy: a report of 18 cases]
Fu YM, Ni SB, Chen QY, Zhao ZS, Ren MH, Ma L, Jiao ZX.
Zhonghua Yi Xue Za Zhi. 2009 Feb 10;89(5):335-7. Chinese.
PMID: 19563713 [PubMed - in process]
- The use of holmium laser technology for the treatment of refractory common bile duct stones, with a short review of the relevant literature.
Day A, Sayegh ME, Kastner C, Liston T.
Surg Innov. 2009 Jun;16(2):169-72.
PMID: 19546123 [PubMed - in process]
- Microsphere radioembolization of liver malignancies: current developments.
Bult W, Vente MA, Zonnenberg BA, Van Het Schip AD, Nijsen JF.
Q J Nucl Med Mol Imaging. 2009 Sep;53(3):325-35.
PMID: 19521312 [PubMed - in process]
- Percutaneous treatment of staghorn stones: a retrospective case-control study with evaluation of single vs multiple access to the kidney.
Barnaba D, Grossi FS, Raguso M, Larocca L, Sallustio G, Di Lena S, Raguso G.
Arch Ital Urol Androl. 2009 Mar;81(1):40-2.
PMID: 19499757 [PubMed - indexed for MEDLINE]
- An Unusual Complication of a Hem-o-Lok Clip((R)) Following Laparoscopic Radical Prostatectomy.
Tunnard GJ, Biyani CS.
J Laparoendosc Adv Surg Tech A. 2009 Jun 2. [Epub ahead of print]
PMID: 19489676 [PubMed - as supplied by publisher]
- Lasers in percutaneous renal procedures.
Cinman NM, Andonian S, Smith AD.
World J Urol. 2009 Jun 2. [Epub ahead of print]
PMID: 19488759 [PubMed - as supplied by publisher]
- Use of Kuntz laser carrier and Sachse urethrotome sheath in percutaneous nephrolithotomy: a point of technique.
Bapat S, Yadav P, Padhye A, Bhave A, Mahajan P.
J Endourol. 2009 Jun;23(6):917-20.
PMID: 19473065 [PubMed - in process]
- [Comparison of holmium and thulium laser in transurethral enucleation of the prostate]
Shao Q, Zhang FB, Shang DH, Tian Y.
Zhonghua Nan Ke Xue. 2009 Apr;15(4):346-9. Chinese.
PMID: 19472910 [PubMed - indexed for MEDLINE]
- Combined electrohydraulic and holmium: YAG laser ureteroscopic nephrolithotripsy of large (>2 cm) renal calculi.
Mariani AJ.
Indian J Urol. 2008 Oct;24(4):521-5.
PMID: 19468511 [PubMed - in process]
Related Articles Free article in PMC | at journal site
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Material Safety Data Sheet |
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1 Identification of substance
- Product details
- Trade name Holmium Disc
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2 Composition/Data on components:
- Chemical characterization:
Designation: (CAS#)
Holmium (CAS# 7440-60-0), 100%
- Identification number(s):
- EINECS Number: 231-169-0
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3 Hazards identification
- Hazard designation: · void
- Information pertaining to particular dangers for man and environment
Fine powder:
R 11 Highly flammable
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4 First aid measures
- General information No special measures required.
- After inhalation Seek medical treatment in case of complaints.
- After skin contact The product is not skin irritating.
- After eye contact
Rinse opened eye for several minutes under running water. If symptoms persist, consult doctor.
- After swallowing Seek medical treatment.
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5 Fire fighting measures
- Suitable extinguishing agents Extinguishing powder. Do not use water.
- For safety reasons unsuitable extinguishing agents Water.
- Protective equipment: No special measures required.
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6 Accidental release measures
- Person-related safety precautions: Not required.
- Measures for environmental protection:
Do not allow material to be released to the environment without proper governmental permits.
- Measures for cleaning/collecting: Collect mechanically.
- Additional information:
See Section 7 for information on safe handling
See section 8 for information on personal protection equipment.
See Section 13 for information on disposal.
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7 Handling and storage
- Handling
- Information for safe handling:
Keep containers tightly sealed.
Store in cool, dry place in tightly closed containers.
No special precautions necessary if used correctly.
- Information about protection against explosions and fires:
No special measures required.
- Storage
- Requirements to be met by storerooms and containers:
No special requirements.
- Information about storage in one common storage facility:
Do not store together with oxidizing and acidic materials.
Store away from halogens.
- Further information about storage conditions:
Store under dry inert gas.
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8 Exposure controls and personal protection
- Additional information about design of technical systems:
No further data; see item 7.
- Components with critical values that require monitoring at the
workplace:
Not required.
- Additional information: No data
- Personal protective equipment
- General protective and hygienic measures
The usual precautionary measures should be adhered to in handling the chemicals.
- Breathing equipment: Not required.
- Protection of hands: Not required.
- Eye protection: Safety glasses
- Body protection: Protective work clothing.
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9 Physical and chemical properties:
- General Information
- Form: Solid.
- Colour: Silver grey
- Smell: Odourless
- Value/Range Unit Method
- Change in condition
- Melting point/Melting range: 1474 ° C
- Boiling point/Boiling range: 2600 ° C
- Sublimation temperature / start: Not determined
- Flash point: Not applicable
- Inflammability (solid, gaseous) Product is not inflammable.
Powder: flammable
- Ignition temperature: Not determined
- Decomposition temperature: Not determined
- Danger of explosion: Product is not explosive.
- Critical values for explosion:
- Lower: Not determined
- Upper: Not determined
- Steam pressure: Not determined
- Density at 20 ° C 8.78 g/cm³
- Solubility in / Miscibility with
- Water: Not determined
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10 Stability and reactivity
- Thermal decomposition / conditions to be avoided:
No decomposition if used and stored according to specifications.
- Materials to be avoided:
Oxidizing agents
Acids
Halogens
Water/moisture
Air
- Dangerous reactions:
Powder: contact with water liberates extremely flammable gases.
- Dangerous products of decomposition: Metal oxide
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11 Toxicological information
- Acute toxicity:
- Primary irritant effect:
- on the skin: May cause irritation
- on the eye: May cause irritation
- Sensitization: No sensitizing effect known.
- Additional toxicological information:
To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.
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12 Ecological information:
- General notes:
Do not allow material to be released to the environment without proper governmental permits.
Water hazard class 1 (Self-assessment): slightly hazardous for water.
Do not allow undiluted product or large quantities of it to reach ground water, water bodies or sewage system.
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13 Disposal considerations
- Product:
- Recommendation
Consult state, local or national regulations for proper disposal.
Hand over to disposers of hazardous waste.
Must be specially treated under adherence to official regulations.
- Uncleaned packagings:
- Recommendation:
Disposal must be made according to official regulations.
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14 Transport information
- Land transport ADR/RID and GGVS/GGVE (cross-border/domestic)
- ADR/RID-GGVS/E Class: None
- Maritime transport IMDG/GGVSea:
- IMDG/GGVSea Class: None
- Air transport ICAO-TI and IATA-DGR:
- ICAO/IATA Class: None
- Transport/Additional information:
Not dangerous according to the above specifications.
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15 Regulatory information
- Designation according to EC guidelines:
Observe the normal safety regulations when handling chemicals
The product is not subject to identification regulations under EC Directives and the Ordinance on Hazardous Materials (GefStoffV).
- National regulations
- Information about limitation of use:
For use only by technically qualified individuals.
- Water hazard class:
Water hazard class 1 (Self-assessment): slightly hazardous for water.
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16 Other information:
Employers should use this information only as a supplement to other information gathered by them, and should make independent judgement of suitability of this information to ensure proper use and protect the health and safety of employees. This information is furnished without warranty, and any use of the product not in conformance with this Material Safety Data Sheet, or in combination with any other product or process, is the responsibility of the user.
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