Holmium Sulfate is a moderately water and acid soluble Holmium source for uses compatible with sulfates. Sulfate compounds are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal. Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. Organometallic forms are soluble in organic solutions and sometimes in both aqueous and organic solutions. Metallic ions can also be dispersed utilizing suspended or coated nanoparticles (See also application discussion at Nanotechnology Information and at Quantum Dots) and deposited utilizing sputtering targets and evaporation materials for uses such as solar energy materials and fuel cells. Holmium has the highest magnetic moment (10.6 µB) of any naturally occurring element and has been used to create the highest known magnetic fields as a pole piece or magnetic flux concentrator. Holmium Sulfate is generally immediately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards. Nanoscale (See also Nanotechnology Information and Quantum Dots) elemental powders and suspensions, as alternative high surface area forms, may be considered. We also produce Holmium Sulfate Solution.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Holmium is a Block F, Group 3, Period 6 element. The number of electrons in each of Holmium's shells is 2, 8, 18, 29, 8, 2 and its electronic configuration is [Xe] 4f11 6s2. 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 is only slightly toxic. 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. Holmium was first discovered by J.L. Soret in 1878. See Holmium research below.
Sulfur is a Block P, Group 16, Period 3 element. The number of electrons in each of Sulfur's shells is 2, 8, 6 and its electronic configuration is [Ne]3s2 3p4. In its elemental form sulfur's CAS number is 7704-34-9. The sulfur atom has a radius of 100pm and it's Van der Waals radius is 180pm. Sulfur is a crucial element for all life and serves as both fuels and respiratory (oxygen-replacing) materials for simple organisms. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, Epsom salts, and barite. Sulfur, when organically bonded, is a component of all proteins, as the amino acids methionine and cysteine. In organic form, Sulfur is present in the vitamins thiamine and biotin. Sulfur is also a vital part of many enzymes and also in antioxidant molecules like glutathione and thioredoxin.Sulfur is available as compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity). Sulfur has been known since ancient times but was not accepted as an element until 1777. Antoine Lavoisier helped to convince the scientific commuity that sulfus is an element and not a compound. See Sulfur research below.
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.
EX-VIVO COMPARISON OF AVAILABLE MORCELLATION DEVICES DURING HOLEP THROUGH OBJECTIVE PARAMETERS.
Cornu JN, Terrasa JB, Lukacs B.
J Endourol. 2012 Jan 19. [Epub ahead of print]
PMID:
22260635
[PubMed - as supplied by publisher]
[A meta-analysis of holmium laser enucleation of the prostate for benign prostatic hyperplasia].
Zhao CB, Li JC, Yuan PQ, Hong YQ, Lu B, Zhao SC.
Zhonghua Nan Ke Xue. 2011 Dec;17(12):1112-20. Chinese.
PMID:
22235682
[PubMed - in process]
[Causes, location and management of BPH surgery-related urethral stricture].
Long Z, He LY, Jiang XZ, Zhang YC, Wang GM, Pei XM, Huang K.
Zhonghua Nan Ke Xue. 2011 Dec;17(12):1097-100. Chinese.
PMID:
22235678
[PubMed - in process]
Laser Lithotripsy to Treat Basket Impaction during Mechanical Lithotripsy of a Pancreatic Duct Stone.
Hlaing C, Tarnasky P, Hambrick D.
JOP. 2011 Dec 23;13(1):101-3.
PMID:
22233959
[PubMed - in process]
Outpatient therapeutic nuclear oncology.
Turner JH.
Ann Nucl Med. 2012 Jan 7. [Epub ahead of print]
PMID:
22222779
[PubMed - as supplied by publisher]
Outcomes of transurethral removal of intravesical or intraurethral mesh following midurethral sling surgery.
Jo DJ, Lee YS, Oh TH, Ryu DS, Kwak KW.
Korean J Urol. 2011 Dec;52(12):829-34. Epub 2011 Dec 20.
PMID:
22216395
[PubMed - in process]
The efficacy and safety of ureteroscopy for ureteral calculi in pregnancy: our experience in 32 patients.
Bozkurt Y, Penbegul N, Soylemez H, Atar M, Sancaktutar AA, Yildirim K, Sak ME.
Urol Res. 2012 Jan 4. [Epub ahead of print]
PMID:
22215294
[PubMed - as supplied by publisher]
catena-Poly[[tetra-kis-(hexa-methyl-phospho-ramide-?O)bis-(nitrato-?O,O')holmium(III)] [silver(I)-di-µ-sulfido-tungstate(VI)-di-µ-sulfido]].
Zeng J, Tang G, Wei C.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1724-5. Epub 2011 Nov 9.
PMID:
22199530
[PubMed - in process]
Selected Trace Elements in the Sacramento River, California: Occurrence and Distribution.
Taylor HE, Antweiler RC, Roth DA, Alpers CN, Dileanis P.
Arch Environ Contam Toxicol. 2011 Dec 23. [Epub ahead of print]
PMID:
22193863
[PubMed - as supplied by publisher]
Ureterorenoscopy with Holmium-Yttrium-Aluminum-Garnet Fragmentation Is a Safe and Efficient Technique for Stone Treatment in Patients with a Body Mass Index Superior to 30 kg/m(2).
Delorme G, Huu YN, Lillaz J, Bernardini S, Chabannes E, Guichard G, Bittard H, Kleinclauss F.
J Endourol. 2012 Jan 12. [Epub ahead of print]
PMID:
22192111
[PubMed - as supplied by publisher]
Ureteroscopic Lithotripsy for Distal Ureteral Calculi: Comparative Evaluation of Three Different Lithotriptors.
Salvadó JA, Mandujano R, Saez I, Saavedra A, Dell'oro A, Dominguez J, Trucco C.
J Endourol. 2012 Jan 4. [Epub ahead of print]
PMID:
22192101
[PubMed - as supplied by publisher]
[Relationship between morcellation efficiency and enucleated tissue weight in holmium laser enucleation of the prostate (HoLEP) for patients with benign prostatic hyperplasia].
Ishikawa R, Shitara T, Wakatabe Y, Kubo S, Hirayama T, Fujita T, Iwamura M, Baba S.
Nihon Hinyokika Gakkai Zasshi. 2011 Sep;102(5):675-8. Japanese.
PMID:
22191275
[PubMed - in process]
First collaborative experience with thulium laser ablation of localized upper urinary tract urothelial tumors using retrograde intra-renal surgery.
Defidio L, De Dominicis M, Di Gianfrancesco L, Fuchs G, Patel A.
Arch Ital Urol Androl. 2011 Sep;83(3):147-53.
PMID:
22184839
[PubMed - in process]
Treatment of ectopic intratracheal thyroid with a holmium laser.
Hall AB, Gifford TO, Sabatini PR.
Mil Med. 2011 Nov;176(11):1325-6.
PMID:
22165664
[PubMed - indexed for MEDLINE]
Characteristics of patients with fluid extravasation during retrograde ureteroscopic holmium laser lithotripsy for renal calculi.
Luo XM, Zhang C, Qian HJ, Song C, Yang SX.
Saudi Med J. 2011 Dec;32(12):1251-5.
PMID:
22159379
[PubMed - in process]
Potential of high-Z contrast agents in clinical contrast-enhanced computed tomography.
Nowak T, Hupfer M, Brauweiler R, Eisa F, Kalender WA.
Med Phys. 2011 Dec;38(12):6469.
PMID:
22149830
[PubMed - in process]
Successful outcome of flexible ureteroscopy with holmium laser lithotripsy for renal stones 2 cm or greater.
Takazawa R, Kitayama S, Tsujii T.
Int J Urol. 2011 Dec 6. doi: 10.1111/j.1442-2042.2011.02931.x. [Epub ahead of print]
PMID:
22145599
[PubMed - as supplied by publisher]
A case of large bladder hemangioma successfully treated with endoscopic yttrium aluminium garnet laser irradiation.
Takemoto J, Yamazaki Y, Sakai K.
Int J Urol. 2011 Dec;18(12):854-6. doi: 10.1111/j.1442-2042.2011.02879.x. Epub 2011 Oct 20.
PMID:
22142464
[PubMed - in process]
[Impacts of different transurethral prostatic resection procedures on male sexual function: meta-analysis of randomized controlled trials].
Zong HT, Peng XX, Yang CC, Zhang Y.
Zhonghua Nan Ke Xue. 2011 Nov;17(11):1014-8. Chinese.
PMID:
22141274
[PubMed - in process]
Single-operator cholangioscopy-guided laser lithotripsy in patients with difficult biliary and pancreatic ductal stones (with videos).
Maydeo A, Kwek BE, Bhandari S, Bapat M, Dhir V.
Gastrointest Endosc. 2011 Dec;74(6):1308-14.
PMID:
22136776
[PubMed - in process]
Self-assembly of a sulphur-terminated graphene nanoribbon within a single-walled carbon nanotube.
Chuvilin A, Bichoutskaia E, Gimenez-Lopez MC, Chamberlain TW, Rance GA, Kuganathan N, Biskupek J, Kaiser U, Khlobystov AN.
Nat Mater. 2011 Aug 7. doi: 10.1038/nmat3082. [Epub ahead of print]
PMID:
21822259
[PubMed - as supplied by publisher]
Crystallization and preliminary X-ray analysis of the yeast tRNA-thiouridine modification protein 1 (Tum1p).
Qiu R, Wang F, Liu M, Yang Z, Wu T, Ji C.
Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Aug 1;67(Pt 8):953-5. Epub 2011 Jul 27.
PMID:
21821903
[PubMed - in process]
Characterization of Bacillus thuringiensis L-isoleucine dioxygenase toward the production of useful amino acids.
Hibi M, Kawashima T, Kodera T, Smirnov SV, Sokolov PM, Sugiyama M, Shimizu S, Yokozeki K, Ogawa J.
Appl Environ Microbiol. 2011 Aug 5. [Epub ahead of print]
PMID:
21821743
[PubMed - as supplied by publisher]
Characterization of the sulfurtransferase family from Oryza sativa L.
Guretzki S, Papenbrock J.
Plant Physiol Biochem. 2011 Jul 23. [Epub ahead of print]
PMID:
21821426
[PubMed - as supplied by publisher]
Development of a small-scale bioreactor method to monitor the molecular diversity and environmental impacts of bacterial biofilm communities from an acid mine drainage impacted creek.
Cole M, Wrubel J, Henegan P, Janzen C, Holt J, Tobin T.
J Microbiol Methods. 2011 Jul 28. [Epub ahead of print]
PMID:
21821067
[PubMed - as supplied by publisher]
In situ incorporation of nickel nanoparticles into the mesopores of MCM-41 by manipulation of solvent-solute interaction and its activity toward adsorptive desulfurization of gas oil.
Samadi-Maybodi A, Teymouri M, Vahid A, Miranbeigi A.
J Hazard Mater. 2011 Jul 6. [Epub ahead of print]
PMID:
21820806
[PubMed - as supplied by publisher]
Stearoyl-CoA desaturase is an essential enzyme for the parasitic protist Trypanosoma brucei.
Alloatti A, Gupta S, Gualdrón-López M, Nguewa PA, Altabe SG, Deumer G, Wallemacq P, Michels PA, Uttaro AD.
Biochem Biophys Res Commun. 2011 Jul 28. [Epub ahead of print]
PMID:
21820408
[PubMed - as supplied by publisher]
The use of multi-element stable isotope analysis to monitor the origin of chondroitin sulfates.
Thomas F, Jamin E, Shimoo K, Nagao J, Osaki Y, Granier C.
Rapid Commun Mass Spectrom. 2011 Sep 15;25(17):2533-7. doi: 10.1002/rcm.5159.
PMID:
21818814
[PubMed - in process]
Sulphur isotopes in animal hair track distance to sea.
Zazzo A, Monahan FJ, Moloney AP, Green S, Schmidt O.
Rapid Commun Mass Spectrom. 2011 Sep 15;25(17):2371-8. doi: 10.1002/rcm.5131.
PMID:
21818798
[PubMed - in process]
Experimental and Theoretical Evidence of Aromatic Behavior in Heterobenzene-Like Molecules with Metal-Metal Multiple Bonds.
Fang W, He Q, Tan ZF, Liu CY, Lu X, Murillo CA.
Chemistry. 2011 Aug 4. doi: 10.1002/chem.201003693. [Epub ahead of print]
PMID:
21818792
[PubMed - as supplied by publisher]
Rhodovulum phaeolacus sp. nov. a phototrophic alphaproteobacterium isolated from a brown pond.
Venkata Naga Satya Lakshmi K, Sasikala C, Venkata Ramana V, Veera Venkata Ramaprasad E, Venkata Ramana C.
J Gen Appl Microbiol. 2011;57(3):145-51.
PMID:
21817826
[PubMed - in process]
Comparative data on effects of leading pretreatments and enzyme loadings and formulations on sugar yields from different switchgrass sources.
Wyman CE, Balan V, Dale BE, Elander RT, Falls M, Hames B, Holtzapple MT, Ladisch MR, Lee YY, Mosier N, Pallapolu VR, Shi J, Thomas SR, Warner RE.
Bioresour Technol. 2011 Jun 21. [Epub ahead of print]
PMID:
21816612
[PubMed - as supplied by publisher]
Target loads of atmospheric sulfur deposition for the protection and recovery of acid-sensitive streams in the Southern Blue Ridge Province.
Sullivan TJ, Cosby BJ, Jackson WA.
J Environ Manage. 2011 Aug 2. [Epub ahead of print]
PMID:
21816535
[PubMed - as supplied by publisher]
Differential effects of a post-anthesis fertilizer regimen on the wheat flour proteome determined by quantitative 2-DE.
Altenbach SB, Tanaka CK, Hurkman WJ, Whitehand LC, Vensel WH, Dupont FM.
Proteome Sci. 2011 Aug 4;9(1):46. [Epub ahead of print]
PMID:
21816081
[PubMed - as supplied by publisher]
Comparative toxicity of arsenic metabolites in human bladder cancer EJ-1 cells.
Naranmandura H, Michael CW, Xu S, Lee J, Leslie E, Weinfeld M, Le XC.
Chem Res Toxicol. 2011 Aug 4. [Epub ahead of print]
PMID:
21815631
[PubMed - as supplied by publisher]
The Effects of Different Garlic-derived Allyl Sulfides on Peroxidative Processes and Anaerobic Sulfur Metabolism in Mouse Liver.
Iciek MB, Kowalczyk-Pachel D, Kwiecien I, Dudek MB.
Phytother Res. 2011 Aug 4. doi: 10.1002/ptr.3572. [Epub ahead of print]
PMID:
21815229
[PubMed - as supplied by publisher]
A combined model of hepatic polyamine and sulfur amino acid metabolism to analyze S-adenosyl methionine availability.
Reyes-Palomares A, Montañez R, Sánchez-Jiménez F, Medina MA.
Amino Acids. 2011 Aug 4. [Epub ahead of print]
PMID:
21814788
[PubMed - as supplied by publisher]
Microbial gene functions enriched in the Deepwater Horizon deep-sea oil plume.
Lu Z, Deng Y, Van Nostrand JD, He Z, Voordeckers J, Zhou A, Lee YJ, Mason OU, Dubinsky EA, Chavarria KL, Tom LM, Fortney JL, Lamendella R, Jansson JK, D'haeseleer P, Hazen TC, Zhou J.
ISME J. 2011 Aug 4. doi: 10.1038/ismej.2011.91. [Epub ahead of print]
PMID:
21814288
[PubMed - as supplied by publisher]
1,1'-(3-Methyl-4-phenylthieno[2,3-b]thiophene-2,5-diyl)diethanone as a Building Block in Heterocyclic Synthesis. Novel Synthesis of Some Pyrazole and Pyrimidine Derivatives.
Mabkhot YN, Al-Majid AM, Barakat A, Alshahrani S, Siddiqui Y.
Molecules. 2011 Aug 3;16(8):6502-11.
PMID:
21814162
[PubMed - in process]
Towards the Growth of an Aligned Single-Layer MoS2 Film.
Kim D, Sun D, Lu W, Cheng Z, Zhu Y, Le D, Rahman TS, Bartels L.
Langmuir. 2011 Aug 3. [Epub ahead of print]
PMID:
21812475
[PubMed - as supplied by publisher]
Material Safety Data Sheet
1 Identification of substance
Product details
Trade name Holmium Fluoride
2 Composition/Data on components:
Chemical characterization: Designation: (CAS#)
Holmium fluoride (CAS# 13760-78-6), 100%
Identification number(s):
EINECS Number: 237-352-1
3 Hazards identification
Hazard designation: Xn Harmful
Information pertaining to particular dangers for man and environment
R 20/21/22 Harmful by inhalation, in contact with skin and if swallowed.
R 36/37/38 Irritating to eyes, respiratory system and skin.
4 First aid measures
After inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm. Consult doctor if symptoms persist.
Seek immediate medical advice.
After skin contact
Instantly wash with water and soap and rinse thoroughly.
Seek immediate medical advice.
Rub in Ca-gluconate solution or Ca-gluconate gel immediately.
After eye contact
Rinse opened eye for several minutes under running water. Then consult doctor.
After swallowing Seek immediate medical advice.
5 Fire fighting measures
Suitable extinguishing agents
Use fire fighting measures that suit the environment.
Special hazards caused by the material, its products of combustion or flue gases:
Can be released in case of fire:
Hydrogen fluoride (HF)
Protective equipment:
Wear self-contained breathing apparatus.
Wear full protective suit.
Measures for environmental protection:
Do not allow material to be released to the environment without proper governmental permits.
Measures for cleaning/collecting:
Dispose of contaminated material as waste according to item 13.
Ensure adequate ventilation.
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.
7 Handling and storage
Handling
Information for safe handling:
Keep containers tightly sealed.
Store in cool, dry place in tightly closed containers.
Ensure good ventilation/exhaustion at the workplace.
Information about protection against explosions and fires:
The product is not flammable
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 acids.
Further information about storage conditions:
Keep container tightly sealed.
Store in cool, dry conditions in well sealed containers.
8 Exposure controls and personal protection
Additional information about design of technical systems:
Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.
Components with critical values that require monitoring at the workplace:
Fluorides (as F)
mg/m3
ACGIH TLV 2.5
Austria TWA 2.5
Belgium TWA 2.5
Finland TWA 2.5
France TWA 2.5
Germany MAK 2.5
Hungary TWA 1; 2-STEL
Netherlands TWA 3.5
Norway TWA 0.6
Poland TWA 1; 3-STEL
Sweden NGV 2
Switzerland MAK-W 1.5
United Kingdom TWA 2.5
Russia TWA 2
Denmark TWA 2.5
USA PEL 2.5
Additional information: No data
Personal protective equipment
General protective and hygienic measures
The usual precautionary measures should be adhered to in handling the chemicals.
Keep away from foodstuffs, beverages and food.
Instantly remove any soiled and impregnated garments.
Wash hands during breaks and at the end of the work.
Avoid contact with the eyes and skin.
Breathing equipment: Use breathing protection with high concentrations.
Protection of hands: Impervious gloves
Eye protection:
Safety glasses
Face protection
Body protection: Protective work clothing.
9 Physical and chemical properties:
General Information
Form: Crystalline
Colour: Yellow
Smell: Odourless
Value/Range Unit Method
Change in condition
Melting point/Melting range: 1143 ° C
Boiling point/Boiling range: 2200 ° C
Sublimation temperature / start: Not determined
Flash point: Not applicable
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 Not determined
Solubility in / Miscibility with
Water: Insoluble
Not miscible or difficult to mix
10 Stability and reactivity
Thermal decomposition / conditions to be avoided:
No decomposition if used and stored according to specifications.
Materials to be avoided: Acids
Dangerous reactions: No dangerous reactions known
Dangerous products of decomposition: Hydrogen fluoride
11 Toxicological information
Acute toxicity:
Primary irritant effect:
on the skin: Irritant for skin and mucous membranes.
on the eye: Irritant effect.
Sensitization: No sensitizing effect known.
Additional toxicological information:
Danger by skin resorption.
To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.
No classification data on carcinogenic properties of this material is available from the EPA, IARC, NTP, OSHA or ACGIH.
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.
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.
14 Transport information
Land transport ADR/RID and GGVS/GGVE (cross-border/domestic)
ADR/RID-GGVS/E Class: 6.1 (T5) Toxic substances.
Kemler Number: 60
UN-Number: 3288
Packaging group: III
Label 6.1
Designation of goods: 3288 TOXIC SOLID, INORGANIC, N.O.S. (holmium
fluoride)
Code letter and hazard designation of product: Xn Harmful
Risk phrases:
20/21/22 Harmful by inhalation, in contact with skin and if swallowed.
36/37/38 Irritating to eyes, respiratory system and skin.
Safety phrases:
9 Keep container in a well-ventilated place.
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
36/37 Wear suitable protective clothing and gloves.
National regulations
Information about limitation of use:
For use only by technically qualified individuals.
Employment restrictions concerning young persons must be observed.
Water hazard class:
Water hazard class 1 (Self-assessment): slightly hazardous for water.
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.
Holmium Sulfate is a moderately water and acid soluble Holmium source for uses compatible with sulfates. Sulfate compounds are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal. Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. Organometallic forms are soluble in organic solutions and sometimes in both aqueous and organic solutions. Metallic ions can also be dispersed utilizing suspended or coated nanoparticles (See also application discussion at Nanotechnology Information and at Quantum Dots) and deposited utilizing sputtering targets and evaporation materials for uses such as solar energy materials and fuel cells. Holmium has the highest magnetic moment (10.6 µB) of any naturally occurring element and has been used to create the highest known magnetic fields as a pole piece or magnetic flux concentrator. Holmium Sulfate is generally immediately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards. Nanoscale (See also Nanotechnology Information and Quantum Dots) elemental powders and suspensions, as alternative high surface area forms, may be considered. We also produce Holmium Sulfate Solution.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Holmium is a Block F, Group 3, Period 6 element. The number of electrons in each of Holmium's shells is 2, 8, 18, 29, 8, 2 and its electronic configuration is [Xe] 4f11 6s2. 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 is only slightly toxic. 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. Holmium was first discovered by J.L. Soret in 1878. See Holmium research below. 
Sulfur is a Block P, Group 16, Period 3 element. The number of electrons in each of Sulfur's shells is 2, 8, 6 and its electronic configuration is [Ne]3s2 3p4. In its elemental form sulfur's CAS number is 7704-34-9. The sulfur atom has a radius of 100pm and it's Van der Waals radius is 180pm. Sulfur is a crucial element for all life and serves as both fuels and respiratory (oxygen-replacing) materials for simple organisms. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, Epsom salts, and barite. Sulfur, when organically bonded, is a component of all proteins, as the amino acids methionine 
and cysteine. In organic form, Sulfur is present in the vitamins thiamine and biotin. Sulfur is also a vital part of many enzymes and also in antioxidant molecules like glutathione and thioredoxin.Sulfur is available as compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity). Sulfur has been known since ancient times but was not accepted as an element until 1777. Antoine Lavoisier helped to convince the scientific commuity that sulfus is an element and not a compound. See Sulfur research below.
