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GADOLINIUM

GADOLINIUM Structure
CAS No.
7440-54-2
Chemical Name:
GADOLINIUM
Synonyms
Gd;GD007910;GD007925;GD005105;GD007905;GADOLINIUM;Gadolinium foil;gadolinium atom;GADOLINIUM METAL;Gadolinium chips
CBNumber:
CB7393251
Molecular Formula:
Gd
Molecular Weight:
157.25
MOL File:
7440-54-2.mol
MSDS File:
SDS
Modify Date:
2024/5/31 13:56:46
Request For Quotation

GADOLINIUM Properties

Melting point 1313 °C (lit.)
Boiling point 3273 °C (lit.)
Density 7.886 g/mL at 25 °C (lit.)
Flash point 3266°C
solubility soluble in dilute acid solutions
form ingot
color Silver
Specific Gravity 7.898
Resistivity 126 μΩ-cm, 20°C
Water Solubility Soluble in magnesium and diluted acid. Insoluble in water.
Sensitive Air & Moisture Sensitive
Merck 13,4347
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)
Stability Stable. Powder is highly flammable. Incompatible with strong oxiziding agents, halogens, acids. Powder may react with water or moisture.
CAS DataBase Reference 7440-54-2(CAS DataBase Reference)
EPA Substance Registry System Gadolinium (7440-54-2)

GADOLINIUM Properties

Poissons Ratio 0.259
Shear Modulus 21.8 GPa, Calculated
Hardness, Vickers 37, polycrystalline
Bulk Modulus 37.9 GPa

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS02
Signal word  Danger
Hazard statements  H228-H261
Precautionary statements  P210-P231+P232-P240-P241-P280-P370+P378
Hazard Codes  F,Xi
Risk Statements  15-36/38
Safety Statements  43-7/8-26-Neverusewater.
RIDADR  UN 3208 4.3/PG 3
WGK Germany  3
RTECS  LW3850000
F  1
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  2846902015
NFPA 704
0
3 0

GADOLINIUM price More Price(34)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) 693723 Gadolinium foil, thickness 1?mm, 99.9% trace rare earth metals basis 7440-54-2 1EA ₹20762.4 2022-06-14 Buy
Sigma-Aldrich(India) 263087 Gadolinium chips 7440-54-2 10G ₹13113.65 2022-06-14 Buy
Sigma-Aldrich(India) 261114 Gadolinium ingot, 99.9% trace rare earth metals basis 7440-54-2 10G ₹8640.45 2022-06-14 Buy
ALFA India ALF-045929-KS Gadolinium sputtering target, 76.2mm dia x 3.18mm thick 7440-54-2 1ea. ₹126975 2022-05-26 Buy
ALFA India ALF-045915-14 Gadolinium powder, -200 mesh, 99.9% (REO) 7440-54-2 25g ₹50974 2022-05-26 Buy
Product number Packaging Price Buy
693723 1EA ₹20762.4 Buy
263087 10G ₹13113.65 Buy
261114 10G ₹8640.45 Buy
ALF-045929-KS 1ea. ₹126975 Buy
ALF-045915-14 25g ₹50974 Buy

GADOLINIUM Chemical Properties,Uses,Production

Chemical Properties

metal foil, chunks or powder. The powder of gadolinium is highly flammable; incompatible with strong oxidising agents, halogens, acids; and reacts with water or moisture.

Physical properties

Gadolinium is silvery-white, soft, malleable, and ductile with a metallic luster. It is the secondof what is referred to as the dysprosium, subgroup in the middle of the lanthanide seriesof rare-earths. It tarnishes in air, forming the oxide (Gd2O3) on the surface, which flakes offthe surface, exposing a fresh metal that in turn oxidizes.
Its melting point is 1,313°C, its boiling point is 3,273°C, and its density is 7.90g/cm3.

Isotopes

There are 39 isotopes of gadolinium. Seven of these are stable. They are: Gd-54, which makes up 2.18% of all the gadolinium found in the Earth’s crust; Gd-55,supplying 14.80%; Gd-156, making up 20.47%; Gd-157, constituting 15.56%; and Gd-158, accounting for 24.85%. In addition, there are two isotopes of gadolinium that areradioactive and with such long half-lives that they still exist in the Earth’s crust. They areregarded as stable isotopes along with the other seven. They are Gd-152 (1.08×10+14years), which exists in just 0.20% in abundance, and Gd-160 (1.3×10+21 years), foundin 21.86% abundance.

Origin of Name

Named for the mineral gadolinite, which was named for the French chemist Johann Gadolin.

Occurrence

Gadolinium is the 40th most abundant element on Earth and the sixth most abundant ofthe rare-earths found in the Earth’s crust (6.4 ppm). Like many other rare-earths, gadoliniumis found in monazite river sand in India and Brazil and the beach sand of Florida as well asin bastnasite ores in southern California. Similar to other rare-earths, gadolinium is recoveredfrom its minerals by the ion-exchange process. It is also produced by nuclear fission in atomicreactors designed to produce electricity.

Characteristics

Gadolinium, unlike most of the rare earths in the dysprosium subgroup, reacts slowlywith water, releasing hydrogen. It is strongly magnetic at low temperatures. Two of its stableisotopes (Gd-155 and Gd-157) have the greatest ability of all natural elements to absorb thermalneutrons to control the fission chain reaction in nuclear reactors. However, few of theseisotopes are found in the ores of gadolinium.

Uses

Gadolinium’s main use is based on its ability to absorb neutrons, thus making it ideal as aneutron-shielding and neutron-absorbing metal. It is also used as an alloying agent for steel andother metals to make the metals more workable and to be able to withstand low temperatures.
Gadolinium is used in the manufacture of electronics and can be combined with yttriumto make garnets used in microwaves. Gadolinium is used as a catalyst to speed up chemicalreactions, and to activate phosphor compounds in TV screens and cast filaments in electricaldevices. It is also used in high-temperature furnaces. Gadolinium is paramagnetic at normalroom temperatures (weaker than ferromagnetic) and becomes strongly ferromagnetic at verycold temperatures.

Definition

A ductile malleable silvery element of the lanthanoid series of metals. It occurs in association with other lanthanoids. Gadolinium is used in alloys, magnets, and in the electronics industry. Symbol: Gd; m.p. 1313°C; b.p. 3266°C; r.d. 7.9 (25°C); p.n. 64; r.a.m. 157.25.

Hazard

The halogens of gadolinium are very toxic, and gadolinium nitrate is explosive. As withmost rare-earths, care should be taken not to inhale fumes or ingest particles of gadolinium.

GADOLINIUM Preparation Products And Raw materials

Raw materials

Preparation Products

Gadolinium oxide Europium Oxide Samarium oxide GALLIUM PHOSPHIDE

GADOLINIUM Suppliers

Global( 158)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
Aritech Chemazone Private Limited +91-9034345475 Punjab, India 684 58 Inquiry
Central Drug House(P) Ltd. 91-11-49404040 New Delhi, India 6160 58 Inquiry
Parmanu Dhatu Nigam 08048372587Ext 498 Mumbai, India 27 58 Inquiry
Harsh Trading Company 08048372590Ext 538 Mumbai, India 4 58 Inquiry
Intelligent Materials Private Limited 08048953178 Punjab, India 197 58 Inquiry
Nano Research Elements 08048372588Ext 365 Delhi, India 101 58 Inquiry
Rare Earth (India) Unit Of Vijay Commercial House 08046072837 Mumbai, India 32 58 Inquiry
Otto Chemie Pvt. Ltd. +91 9820041841 Mumbai, India 5873 58 Inquiry
CLEARSYNTH LABS LTD. +91-22-45045900 Hyderabad, India 6351 58 Inquiry
Alfa Aesar 1 800 209 7001 Maharashtra, India 6913 58 Inquiry
Supplier Advantage
Aritech Chemazone Private Limited 58
Central Drug House(P) Ltd. 58
Parmanu Dhatu Nigam 58
Harsh Trading Company 58
Intelligent Materials Private Limited 58
Nano Research Elements 58
Rare Earth (India) Unit Of Vijay Commercial House 58
Otto Chemie Pvt. Ltd. 58
CLEARSYNTH LABS LTD. 58
Alfa Aesar 58

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