| Identification | More | [Name]
SAMARIUM | [CAS]
7440-19-9 | [Synonyms]
foil
SM000200
SM000210
SM000205
SM007910
SM000230
SAMARIUM
samarium atom
dif.qualities
Samarium foil
Samarium ingot
SAMARIUM METAL
Samarium chips
Samarium, 99.9%
Samarium powder
SAMARIUM PIECES
SAMARIUM, PULVER
SamariumchipsNREO
SamariumingotNREO
SAMARIUM STANDARD
SAMARIUM ROD 99.9%
SamariumFoil,99.9%
Samariumpowdermesh
SAMARIUM WIRE 99.9%
SAMARIUM DISC 99.9%
Samarium foil50x50mm
Samarium foil25x25mm
SAMARIUM PLATE 99.9%
Sm Standard Solution
Samarium, Chips 99.9%
SaMariuM Metal powder
SamariumpowderREOmesh
SAMARIUM CHIP 99.9%
SAMARIUM ICP STANDARD
SAMARIUM, FLAKE, 99.5%
Samarium,99.90%,chunks
SAMARIUM INGOT 99.9%
SAMARIUM SUBL. NEEDLES
SAMARIUM, -40 MESH, 99%
Samarium, pieces, 99.9%
Samariumchips(99.9%REO)
Samarium, powder 40 mesh
Samarium, 40 mesh, 99.9%
Samarium, chunks, 99.90%
High pure samarium metal
Samarium, 99.9%, -40 mesh
SAMARIUM FOIL (99.9% REO)
SAMARIUM INGOT (99.9% REO)
Samarium(III) ingot/button
SAMARIUM POWDER (99.9% REO)
SAMARIUM POWDER (99.99% REO)
SaMariuM pieces, 99.9% (REO)
Ultra Thin Samarium Nanofoil
SAMARIUM ISO 9001：2015 REACH
SAMARIUM POWDER FOR SYNTHESIS
SamariumfoilNREOmmthickcagxmm
Samarium, powder 40 mesh 99.9%
SAMARIUM FOIL, 3N: (99.9% REO)
SAMARIUM INGOT, 3N: (99.9% REO)
SAMARIUM CHIPS, 3N: (99.9% REO)
SAMARIUM, AAS STANDARD SOLUTION
SAMARIUM SINGLE ELEMENT STANDARD
Samarium powder, -40 mesh, 99.99%
SAMARIUM, PLASMA STANDARD SOLUTION
Samarium rod, 12.7mm (0.5 in.) dia.
Samarium pieces, Sublimed dendritic
Samarium rod, 6.35mm (0.25 in.) dia.
Samarium powder (99.9% REO) 325 mesh
SaMariuM, trace Metal basis, 40 Mesh
Samarium foil, 1.0mm (0.04 in.) thick
Samarium foil, 0.25mm (0.01 in.) thick
Samarium foil, 0.75mm (0.03 in.) thick
Samarium foil, 0.1mm (0.004 in.) thick
Samarium foil, 0.62mm (0.024 in.) thick
Samarium foil, 0.025mm (0.001 in.) thick
Samarium foil, 0.127mm (0.005 in.) thick
SAMARIUM ICP STANDARD TRACEABLE TO SRM F
AAGradeSamarium1,000mg/L±2%in2%HNO3,100ml
Samarium, pieces or lumps, 10-30 mm, 99.9%
Samarium ingot/button, ^=50.8mm (2.0in) dia
SAMARIUM: 99.9%, CHIPS AMPOULED UNDER ARGON
SAMARIUM ATOMIC ABSORPTION STANDARD SOLUTION
Samarium, AAS standard solution, Sm 1000μg/mL
SAMARIUM PLASMA EMISSION SPECTROSCOPY STANDARD
SaMariuM, 99.9%, (trace Metal basis), -40 Mesh
Samarium plasma standard solution, Sm 1000μg/mL
Samarium plasma standard solution, Sm 10000μg/mL
Samarium ingot/button, &ap:50.8mm (2.0 in.) dia.
Samarium standard solution, 1 mg/ml Sm in 2% HNO3
Samarium pieces, 12mm (0.47in) & down, 99.9% (REO)
Samarium ingot, 99.9% trace rare earth metals basis
Samarium foil, 0.127mm (0.005in) thick, 99.9%,50*50mm
SaMariuM ingot/button, ^=50.8MM (2.0in) dia, 99.5% (REO)
Samarium, AAS standard solution, Specpure(R), Sm 1000μg/ml
Samarium, plasma standard solution, Specpure(R), Sm 1000μg/ml
Samarium, plasma standard solution, Specpure(R), Sm 10,000μg/ml
Samarium rod, 6.35mm dia., 99.9% trace metals basis excluding Ta
Samarium rod, 12.7mm dia., 99.9% trace metals basis excluding Ta
Samarium pieces, sublimed dendritic, 99.9% trace rare earth metals basis
Samarium powder, -40 mesh, ampuled under argon, 99.9% trace rare earth metals basis | [EINECS(EC#)]
231-128-7 | [Molecular Formula]
Sm | [MDL Number]
MFCD00011233 | [Molecular Weight]
150.36 | [MOL File]
7440-19-9.mol |
| Chemical Properties | Back Directory | [Appearance]
silvery grey powder | [Melting point ]
1074 °C (lit.) | [Boiling point ]
1794 °C (lit.) | [density ]
7.47 g/mL at 25 °C(lit.)
| [storage temp. ]
water-free area | [form ]
powder
| [color ]
Silvery-gray | [Specific Gravity]
7.4 | [Resistivity]
91.4 μΩ-cm, 0°C | [Water Solubility ]
Insoluble in water. | [Sensitive ]
Air & Moisture Sensitive | [Merck ]
13,8425 | [Exposure limits]
ACGIH: TWA 2 ppm; STEL 4 ppm
OSHA: TWA 2 ppm(5 mg/m3)
NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) | [History]
Discovered spectroscopically by its sharp absorption
lines in 1879 by Lecoq de Boisbaudran in the mineral
samarskite, named in honor of a Russian mine official, Col.
Samarski. Samarium is found along with other members of
the rare-earth-elements in many minerals, including monazite
and bastnasite, which are commercial sources. The largest
producer of rare-earth minerals is now China, followed by
the U.S., India, and Russia. It occurs in monazite to the extent
of 2.8%. While misch metal containing about 1% of samarium
metal has long been used, samarium has not been isolated in
relatively pure form until recently. Ion-exchange and solvent
extraction techniques have recently simplified separation of
the rare earths from one another; more recently, electrochemical
deposition, using an electrolytic solution of lithium citrate
and a mercury electrode, is said to be a simple, fast, and highly
specific way to separate the rare earths. Samarium metal can
be produced by reducing the oxide with barium or lanthanum.
Samarium has a bright silver luster and is reasonably stable
in air. Three crystal modifications of the metal exist, with
transformations at 734 and 922°C. The metal ignites in air at
about 150°C. Thirty-three isotopes and isomers of samarium
are now recognized. Natural samarium is a mixture of seven
isotopes, three of which are unstable but have long half-lives.
Samarium, along with other rare earths, is used for carbonarc
lighting for the motion picture industry. The sulfide has
excellent high-temperature stability and good thermoelectric
efficiencies up to 1100°C. SmCo5 has been used in making a
new permanent magnet material with the highest resistance
to demagnetization of any known material. It is said to have
an intrinsic coercive force as high as 2200 kA/m. Samarium
oxide has been used in optical glass to absorb the infrared.Samarium is used to dope calcium fluoride crystals for use in
optical masers or lasers. Compounds of the metal act as sensitizers
for phosphors excited in the infrared; the oxide exhibits
catalytic properties in the dehydration and dehydrogenation
of ethyl alcohol. It is used in infrared absorbing glass and as
a neutron absorber in nuclear reactors. The metal is priced
at about $3.50/g (99.9%). Little is known of the toxicity of samarium;
therefore, it should be handled carefully. | [CAS DataBase Reference]
7440-19-9(CAS DataBase Reference) | [EPA Substance Registry System]
Samarium (7440-19-9) |
| Safety Data | Back Directory | [Hazard Codes ]
F,R | [Risk Statements ]
R11:Highly Flammable.
R15:Contact with water liberates extremely flammable gases.
R33:Danger of cumulative effects. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S30:Never add water to this product .
S33:Take precautionary measures against static discharges . | [RIDADR ]
UN 3089 4.1/PG 3
| [WGK Germany ]
3
| [F ]
1-10 | [TSCA ]
Yes | [HazardClass ]
4.2 | [PackingGroup ]
I | [HS Code ]
28053019 | [Hazardous Substances Data]
7440-19-9(Hazardous Substances Data) |
| Hazard Information | Back Directory | [Chemical Properties]
silvery grey powder | [Physical properties]
Samarium is a hard, brittle, silver-white metal. When freshly cut, it does not tarnish significantlyunder normal room temperature conditions. Four of its isotopes are radioactive andemit alpha particles (helium nuclei). They are Sm-146, Sm-147, Sm-148, and Sm-149.
Its melting point is 1,074°C, its boiling point is 1,794°C, and its density is 7.52g.cm3. | [Isotopes]
There are 41 known isotopes of samarium. Seven of these are consideredstable. Sm-144 makes up just 3.07% of the natural occurring samarium, Sm-150 makesup 7.38% of natural samarium found on Earth, Sm-152 constitutes 26.75%, and Sm-154 accounts for 22.75%. All the remaining isotopes are radioactive and have very longhalf-lives; therefore, they are considered “stable.” All three contribute to the natural occurrenceof samarium: Sm-147 = 14.99%, Sm-148 = 11.24%, and Sm-149 = 13.82%.
Samarium is one of the few elements with several stable isotopes that occur naturallyon Earth. | [Origin of Name]
It is named after the mineral samarskite. | [Occurrence]
Samarium is the 39th most abundant element in the Earth’s crust and the fifth in abundance(6.5 ppm) of all the rare-earths. In 1879 samarium was first identified in the mineralsamarskite [(Y, Ce U, Fe)3 (Nb, Ta, Ti5)O16]. Today, it is mostly produced by the ion-exchangeprocess from monazite sand. Monazite sand contains almost all the rare-earths, 2.8% of whichis samarium. It is also found in the minerals gadolinite, cerite, and samarskite in South Africa,South America, Australia, and the southeastern United States. It can be recovered as a byproductof the fission process in nuclear reactors. | [Characteristics]
Samarium is somewhat resistant to oxidation in air but will form a yellow oxide over time. Itignites at the rather low temperature of 150°C. It is an excellent reducing agent, releases hydrogenwhen immersed in water, and has the capacity to absorb neutrons in nuclear reactors. | [Definition]
A silvery element
of the lanthanoid series of metals. It
occurs in association with other lanthanoids.
Samarium is used in the metallurgical,
glass, and nuclear industries.
Symbol: Sm; m.p. 1077°C; b.p.
1791°C; r.d. 7.52 (20°C); p.n. 62; r.a.m.
150.36. | [Definition]
samarium: Symbol Sm. A soft silverymetallic element belonging tothe lanthanoids; a.n. 62; r.a.m.150.35; r.d. 7.52 (20°C); m.p. 1077°C;b.p. 1791°C. It occurs in monaziteand bastnatite. There are seven naturallyoccurring isotopes, all of whichare stable except samarium–147,which is weakly radioactive (half-life2.5 × 1011 years). The metal is usedin special alloys for making nuclearreactorparts as it is a neutron absorber.Samarium oxide (Sm2O3) isused in small quantities in special opticalglasses. The largest use of the elementis in the ferromagnetic alloySmCo5, which produces permanentmagnets five times stronger than anyother material. The element was discoveredby Fran?ois Lecoq de Boisbaudranin 1879. | [Hazard]
The salts of samarium are toxic if ingested. These salts react with water, liberating hydrogen,which may explode. |
| Questions And Answer | Back Directory | [Uses]
Samarium occurs as silver-coloured solid/foils or grey powder and is an odourless, flammable, and water-reactive solid. All forms of samarium are known to react with dilute acids emitting flammable/explosive hydrogen gas. Samarium on contact with water reacts and liberates extremely flammable gases. Samarium is incompatible with strong acids, strong oxidising agents, and halogens. The major commercial application of samarium is in samarium–cobalt magnets. These magnets possess permanent magnetisation property. Samarium compounds have been shown to withstand significantly higher temperatures, above 700°C, without losing their magnetic properties. The radioactive isotope samarium-153 is the major component of the drug samarium 153Sm lexidronam (Quadramet). These are used in the treatment of cancers of lung, prostate, and breast and osteosarcoma. Samarium is also used in the catalysis of chemical reactions, radioactive dating, and in x-ray laser. Samarium is used as a catalyst in certain organic reactions: Samarium iodide (SmI2) is used by organic research chemists to make synthetic versions of natural products.
Samarium occurs with concentration up to 2.8% in several minerals including cerite, gadolinite, samarskite, monazite, and bastnäsite, the last two being the most common commercial sources of the element. These minerals are mostly found in China, the United States, Brazil, India, Sri Lanka, and Australia; China is by far the world leader in samarium mining and production. Radioactive isotope samarium-153 is the major component of the drug samarium (153Sm) lexidronam (Quadramet), which kills cancer cells in the treatment of lung cancer, prostate cancer, breast cancer, and osteosarcoma. The isotope, samarium-149, is a strong neutron absorber and is therefore added to the control rods of nuclear reactors. Samaria oxide is used for making special infrared-adsorbing glass and cores of carbon arc-lamp oxide electrodes and as a catalyst for the dehydration and dehydrogenation of ethanol. Its compound with cobalt (SmCo5) is used in making a new permanent magnet material. Samarium has no biological role, but it has been noted to stimulate metabolism. Soluble samarium salts are mildly toxic by ingestion, and there are health hazards associated with these because exposure to samarium causes skin and eye irritation. One of the most important applications of samarium is in samarium–cobalt magnets, which have a nominal composition of SmCo5 or Sm2Co17. They have high permanent magnetisation, which is about 10,000 times that of iron and is second only to that of neodymium magnets.
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| Company Name: |
Alfa Aesar
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| Tel: |
400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
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