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Samarium

SAMARIUM Struktur
7440-19-9
CAS-Nr.
7440-19-9
Bezeichnung:
Samarium
Englisch Name:
SAMARIUM
Synonyma:
Samarium powder;foil;SM000200;SM000210;SM000205;SM007910;SM000230;SAMARIUM;dif.qualities;samarium atom
CBNumber:
CB7493078
Summenformel:
Sm
Molgewicht:
150.36
MOL-Datei:
7440-19-9.mol

Samarium Eigenschaften

Schmelzpunkt:
1074 °C (lit.)
Siedepunkt:
1794 °C (lit.)
Dichte
7.47 g/mL at 25 °C (lit.)
storage temp. 
Store below +30°C.
Aggregatzustand
powder
Farbe
Silvery-gray
Wichte
7.4
Widerstand (resistivity)
91.4 μΩ-cm, 0°C
Wasserl?slichkeit
Insoluble in water.
Sensitive 
Air & Moisture Sensitive
Merck 
13,8425
Expositionsgrenzwerte
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)
CAS Datenbank
7440-19-9(CAS DataBase Reference)
EPA chemische Informationen
Samarium (7440-19-9)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher F,R,Xn
R-S?tze: 11-15-33
S-S?tze: 16-30-33
RIDADR  UN 3089 4.1/PG 3
WGK Germany  3
1-10
TSCA  Yes
HazardClass  4.2
PackingGroup  I
HS Code  28053019
Giftige Stoffe Daten 7440-19-9(Hazardous Substances Data)
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H228 Entzündbarer Feststoff. Entzündbare Feststoffe Kategorie 1 Achtung
Warnung
GHS hazard pictogramssrc="/GHS02.jpg" width="20" height="20" /> P210, P240,P241, P280, P370+P378
H261 In Berührung mit Wasser entstehen entzündbare Gase. Stoffe und Gemische, die in Berührung mit Wasser entzündbare Gase entwickeln (Kapitel 2.12), Kategorie 2 (Water-react. 2), H261 Stoffe und Gemische, die in Berührung mit Wasser entzündbare Gase entwickeln (Kapitel 2.12), Kategorie 2 Achtung
Warnung
GHS hazard pictogramssrc="/GHS02.jpg" width="20" height="20" /> P231+P232, P280, P370+P378,P402+P404, P501
Sicherheit
P210 Von Hitze, hei?en Oberfl?chen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.
P231+P232 Unter inertem Gas handhaben. Vor Feuchtigkeit schützen.
P240 Beh?lter und zu befüllende Anlage erden.
P241 Explosionsgeschützte [elektrische/Lüftungs-/ Beleuchtungs-/...] Ger?te verwenden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P370+P378 Bei Brand: zum L?schen verwenden.

Samarium Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R11:Leichtentzündlich.
R15:Reagiert mit Wasser unter Bildung hochentzündlicher Gase.
R33:Gefahr kumulativer Wirkungen.

S-S?tze Betriebsanweisung:

S16:Von Zündquellen fernhalten - Nicht rauchen.
S30:Niemals Wasser hinzugie?en.
S33:Ma?nahmen gegen elektrostatische Aufladungen treffen.

Chemische Eigenschaften

silvery grey powder

Physikalische Eigenschaften

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.

Charakteristisch

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.

Verwenden

Samarium is easy to magnetize, but very difficult to demagnetize. This makes it ideal forthe manufacture of permanent magnets (SmCo5) that are part of the hard disks for computers.Samarium is also used as a neutron absorber in nuclear reactors, as well as for lasers andmetallurgical research. It makes up about 1% of the metals in misch metal, an alloy in cigarettelighter flints. It is also one of several rare-earths used in floodlights and carbon-arc lights usedby the motion picture industry. Samarium is used as a catalyst in several industries, includingthe dehydrogenation of ethanol alcohol.

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.

Hazard

The salts of samarium are toxic if ingested. These salts react with water, liberating hydrogen,which may explode.

Samarium Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Samarium Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 167)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21639 55
Hubei Jusheng Technology Co.,Ltd.
18871490254
linda@hubeijusheng.com CHINA 28172 58
CONIER CHEM AND PHARMA LIMITED
+8618523575427
sales@conier.com China 49374 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763
sales@tnjchem.com China 34553 58
Shaanxi Dideu Medichem Co. Ltd
+86-029-89586680 +86-18192503167
1026@dideu.com China 7724 58
Zhuoer Chemical Co., Ltd
02120970332; +8613524231522
sales@zhuoerchem.com China 2904 58
Alfa Chemistry

Info@alfa-chemistry.com United States 24072 58
Nanjing Doge Biomedical Technology Co., Ltd
+86-25-58227606 +86-15305155328
sales@dogechemical.com China 4128 58
LEAP CHEM CO., LTD.
+86-852-30606658
market18@leapchem.com China 24727 58
Shanghai Acmec Biochemical Technology Co., Ltd.
+undefined18621343501
product@acmec-e.com China 33338 58

7440-19-9(Samarium)Verwandte Suche:


  • Samarium ingot, 99.9% trace rare earth metals basis
  • Samarium foil50x50mm
  • Samarium pieces, sublimed dendritic, 99.9% trace rare earth metals basis
  • Samarium foil25x25mm
  • Samarium powder, -40 mesh, ampuled under argon, 99.9% trace rare earth metals basis
  • 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 standard solution, 1 mg/ml Sm in 2% HNO3
  • Samarium foil, 0.25mm (0.01 in.) thick
  • Samarium pieces, Sublimed dendritic
  • Samarium, 99.9%
  • Samarium foil, 1.0mm (0.04 in.) thick
  • Samarium rod, 6.35mm (0.25 in.) dia.
  • SAMARIUM PLATE 99.9%
  • SAMARIUM ROD 99.9%
  • SAMARIUM WIRE 99.9%
  • SAMARIUM DISC 99.9%
  • SAMARIUM POWDER (99.9% REO)
  • SAMARIUM FOIL (99.9% REO)
  • SAMARIUM INGOT (99.9% REO)
  • SAMARIUM POWDER (99.99% REO)
  • SamariumFoil,99.9%
  • Samarium powder, -40 mesh, 99.99%
  • dif.qualities
  • Samarium, 40 mesh, 99.9%
  • Samarium, chunks, 99.90%
  • Samariumchips(99.9%REO)
  • SAMARIUM: 99.9%, CHIPS AMPOULED UNDER ARGON
  • SAMARIUM FOIL, 3N: (99.9% REO)
  • SAMARIUM INGOT, 3N: (99.9% REO)
  • SAMARIUM CHIPS, 3N: (99.9% REO)
  • SAMARIUM, FLAKE, 99.5%
  • Samarium, powder 40 mesh
  • Samarium, plasma standard solution, Specpure(R), Sm 10,000μg/ml
  • Samarium pieces, 12mm (0.47in) & down, 99.9% (REO)
  • Samarium, plasma standard solution, Specpure(R), Sm 1000μg/ml
  • Samarium, AAS standard solution, Specpure(R), Sm 1000μg/ml
  • Samarium, 99.9%, -40 mesh
  • SM000200
  • SM000210
  • SM000205
  • SM007910
  • SM000230
  • samarium atom
  • SaMariuM, trace Metal basis, 40 Mesh
  • SaMariuM pieces, 99.9% (REO)
  • Samarium plasma standard solution, Sm 10000μg/mL
  • Samarium foil, 0.75mm (0.03 in.) thick
  • Samarium plasma standard solution, Sm 1000μg/mL
  • Samarium, AAS standard solution, Sm 1000μg/mL
  • Samarium foil, 0.1mm (0.004 in.) thick
  • Samarium foil, 0.62mm (0.024 in.) thick
  • Samarium rod, 12.7mm (0.5 in.) dia.
  • Samarium foil, 0.025mm (0.001 in.) thick
  • Samarium foil, 0.127mm (0.005 in.) thick
  • Samarium ingot/button, &ap:50.8mm (2.0 in.) dia.
  • SAMARIUM, PLASMA STANDARD SOLUTION
  • SAMARIUM SINGLE ELEMENT STANDARD
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