General Description
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NEODYMIUM

General Description
Product Name
NEODYMIUM
CAS No.
7440-00-8
Chemical Name
NEODYMIUM
Synonyms
Nd;NEODYMIUM METAL;Neodymium standard solution, 1 mg/ml Nd in 2% HNO3;ND007940;ND007910;ND005110;NEODYMIUM;NEW NEODYMIUM;Neodymium foil;neodymium atom
CBNumber
CB2259358
Molecular Formula
Nd
Formula Weight
144.24
MOL File
7440-00-8.mol
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NEODYMIUM Property

Melting point:
1021 °C (lit.)
Boiling point:
3074 °C (lit.)
Density 
7.003 g/mL at 25 °C (lit.)
form 
ingot
color 
Silver
Specific Gravity
7.003
Resistivity
64.0 μΩ-cm, 20°C
Water Solubility 
Soluble in dilute acids. Decomposes in water.
Sensitive 
Air & Moisture Sensitive
Merck 
13,6478
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)
CAS DataBase Reference
7440-00-8(CAS DataBase Reference)
EPA Substance Registry System
Neodymium (7440-00-8)
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Safety

Hazard Codes 
F,Xi
Risk Statements 
11-36/37/38-14/15-36/38-14
Safety Statements 
16-26-33-36/37/39-43
RIDADR 
UN 3208 4.3/PG 1
WGK Germany 
3
RTECS 
QO8575000
10
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
28053011
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
261157
Product name
Neodymium
Purity
ingot (in mineral oil), 99.9% trace rare earth metals basis
Packaging
25g
Price
$275
Updated
2023/06/20
Sigma-Aldrich
Product number
263141
Product name
Neodymium
Purity
chips, 99.9% trace rare earth metals basis
Packaging
25g
Price
$574
Updated
2023/01/07
Alfa Aesar
Product number
014431
Product name
Neodymium plasma standard solution
Packaging
100mL
Price
$149
Updated
2024/03/01
Alfa Aesar
Product number
013882
Product name
Neodymium plasma standard solution
Packaging
100mL
Price
$61.65
Updated
2024/03/01
Alfa Aesar
Product number
000214
Product name
Neodymium ingot, 99.1% (metals basis)
Packaging
25g
Price
$124
Updated
2024/03/01
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NEODYMIUM Chemical Properties,Usage,Production

General Description

Neodymium is the most abundant of the rare earths after Cerium and Lanthanum. It shows similar characteristics to the other trivalent Lanthanides.
Primary applications include lasers, glass coloring and tinting, dielectrics and, most importantly, as the fundamental basis for Neodymium-Iron-Boron (Nd2Fe14B) permanent magnets.
Neodymium has a strong absorption band centered at 580 nm, which is very close to the human eye's maximum level of sensitivity making it useful in protective lenses for welding goggles. It is also used in CRT displays to enhance contrast between reds and greens. It is highly valued in glass manufacturing for its attractive purple coloring to glass.
Neodymium is included in many formulations of barium titanate, used as dielectric coatings and in multi-layer capacitors essential to electronic equipment.
Yttrium-Aluminum-Garnet (YAG) solid state lasers utilize neodymium because it has optimal absorption and emitting wavelengths. Nd-based YAG lasers are used in various medical applications, drilling, welding and material processing.
Neodymium has an unusually large specific heat capacity at liquid-helium temperatures, so is useful in cryocoolers.
Probably because of similarities to Ca2+, Nd3+ has been reported to promote plant growth. Rare earth element compounds are frequently used in China as fertilizer.
It is still a popular additive in glasses. Neodymium is also used to make some of the strongest permanent magnets. These magnets are widely used in electrical motors, generators and some other electronics such as microphones, loudspeakers and computer hard disks. Neodymium is also used with other substrate crystals to make high-powered infrared lasers.
Neodymium Metal is mainly used in manufacturing very powerful permanent magnets-Neodymium-Iron-Boron magnets, and also are applied in making specialty superalloy and sputtering targets. Neodymium is also used in the electric motors of hybrid and electric automobiles, and in the electricity generators of some designs of commercial wind turbines.

Chemical Properties

grey metal ingot

Physical properties

Neodymium is the third most abundant rare-earth element in the Earth’s crust (24 ppm). Itis reactive with moist air and tarnishes in dry air, forming a coating of Nd3O3, an oxide witha blue tinge that flakes away, leaving bare metal that then will continue to oxidize.
Its melting point is 1,021°C, its boiling point is 3,074°C, and its density is 7,01 g/cm3.

Isotopes

There are 47 isotopes of neodymium, seven of which are considered stable.Together the stable isotopes make up the total abundance in the Earth’s crust. Twoof these are radioactive but have such long half-lives that they are considered stablebecause they still exist on Earth. They are Nd-144 (half-life of 2.29×10+15 years) andNd-150 (half-life of 6.8×10+15years). All the other isotopes are synthetic and havehalf-lives ranging from 300 nanoseconds to 3.37 days.

Origin of Name

Derived from the two Greek words neos and didymos. When combined, they mean “new twin.”

Occurrence

Although neodymium is the 28th most abundant element on Earth, it is third in abundanceof all the rare-earths. It is found in monazite, bastnasite, and allanite ores, where it isremoved by heating with sulfuric acid (H2SO4). Its main ore is monazite sand, which is amixture of Ce, La, Th, Nd, Y, and small amounts of other rare-earths. Some monazite sandsare composed of over 50% rare-earths by weight. Like most rare-earths, neodymium can beseparated from other rare-earths by the ion-exchange process.

Characteristics

As an element, neodymium is a soft silver-yellow metal. It is malleable and ductile. It canbe cut with a knife, machined, and formed into rods, sheets, powder, or ingots. Neodymiumcan form trivalent compounds (salts) that exhibit reddish or violet-like colors.
Neodymium reacts with water to form Nd(OHO)3 and hydrogen (H2), which can explodeif exposed to a flame or spark. It is shipped and stored in containers of mineral oil.

History

In 1841 Mosander extracted from cerite a new rose-colored oxide, which he believed contained a new element. He named the element didymium, as it was an inseparable twin brother of lanthanum. In 1885 von Welsbach separated didymium into two new elemental components, neodymia and praseodymia, by repeated fractionation of ammonium didymium nitrate. While the free metal is in misch metal, long known and used as a pyrophoric alloy for light flints, the element was not isolated in relatively pure form until 1925. Neodymium is present in misch metal to the extent of about 18%. It is present in the minerals monazite and bastnasite, which are principal sources of rare-earth metals. The element may be obtained by separating neodymium salts from other rare earths by ion-exchange or solvent extraction techniques, and by reducing anhydrous halides such as NdF3 with calcium metal. Other separation techniques are possible. The metal has a bright silvery metallic luster. Neodymium is one of the more reactive rare-earth metals and quickly tarnishes in air, forming an oxide that splits off and exposes metal to oxidation. The metal, therefore, should be kept under light mineral oil or sealed in a plastic material. Neodymium exists in two allotropic forms, with a transformation from a double hexagonal to a body-centered cubic structure taking place at 863°C. Natural neodymium is a mixture of seven isotopes, one of which has a very long half-life. Twenty-seven other radioactive isotopes and isomers are recognized. Didymium, of which neodymium is a component, is used for coloring glass to make welder’s goggles. By itself, neodymium colors glass delicate shades ranging from pure violet through wine-red and warm gray. Light transmitted through such glass shows unusually sharp absorption bands. The glass has been used in astronomical work to produce sharp bands by which spectral lines may be calibrated. Glass containing neodymium can be used as a laser material to produce coherent light. Neodymium salts are also used as a colorant for enamels. The element is also being used with iron and boron to produce extremely strong magnets. These are the most compact magnets commercially available. The price of the metal is about $4/g. Neodymium has a low-to-moderate acute toxic rating. As with other rare earths, neodymium should be handled with care.

Uses

Neodymium salts, electronics, alloys, colored glass, (especially in astronomical lenses and lasers), to increase heat resistance of magnesium, metallurgical research, yttrium-garnet laser dope, gas scavenger in iron and steel manufacture

Uses

Misch metal is composed of about 18% neodymium, from which cigarette-lighter flints aremade. Because neodymium absorbs the yellow “sodium” line in the visible light spectrum, itcan be added to glass to produce violet-, red-, or gray-colored glass. Neodymium glass is usedto calibrate spectrometers and other optical devices in astronomical and laboratory observationinstruments. It is also used in the production of artificial rubies used in lasers. Its salts areused as pigments for ceramic enamels and glazes.
Neodymium is magnetic and is used in many of the most powerful magnets in the world.Some types of steel contain up to 18% neodymium as an alloy. It is also used as a color forTV tubes and as a tint for eyeglasses.

Uses

Neodymium, plasma standard solution is used as a standard solution in analytical chemistry and atomic absorption spectroscopy. It is also used as a single-element standard solution for plasma emission spectrometry.

Production Methods

Neodymium is recovered mostly from mineral monazite and bastnasite, thetwo most abundant rare-earth minerals. Monazite is a rare earth-thorium phosphate usually containing between 9 to 20% neodymium. Bastnasite is a rare earth fluocarbonate ore containing 2 to 15% neodymium. Both ores are first cracked by heating with concentrated sulfuric acid or sodium hydroxide. The recovery process from monazite ore using sulfuric acid is described below:
Heating the ore with sulfuric acid converts neodymium to its water soluble sulfate. The product mixture is treated with excess water to separate neodymium as soluble sulfate from the water-insoluble sulfates of other metals, as well as from other residues. If monazite is the starting material, thorium is separated from neodymium and other soluble rare earth sulfates by treating the solution with sodium pyrophosphate. This precipitates thorium pyrophosphate. Alternatively, thorium may be selectively precipitated as thorium hydroxide by partially neutralizing the solution with caustic soda at pH 3 to 4. The solution then is treated with ammonium oxalate to precipitate rare earth metals as their insoluble oxalates. The rare earth oxalates obtained are decomposed to oxides by calcining in the presence of air. Composition of individual oxides in such rare earth oxide mixture may vary with the source of ore and may contain neodymium oxide, as much as 18%.
The oxalates obtained above, alternatively, are digested with sodium hydroxide converting the rare earth metals to hydroxides. Cerium forms a tetravalent hydroxide, Ce(OH)4, which is insoluble in dilute nitric acid. When dilute nitric acid is added to this rare earth hydroxide mixture, cerium(IV) hydroxide forms an insoluble basic nitrate, which is filtered out from the solution. Cerium also may be removed by several other procedures. One such method involves calcining rare earth hydroxides at 500°C in air. Cerium converts to tetravalent oxide, CeO2,while other lanthanides are oxidized to trivalent oxides. The oxides are dissolved in moderately concentrated nitric acid. Ceric nitrate so formed and any remaining thorium nitrate present is now removed from the nitrate solution by contact with tributyl phosphate in a countercurrent
After removing cerium (and thorium), the nitric acid solution of rare earths is treated with ammonium nitrate. Lanthanum forms the least soluble double salt with ammonium nitrate, which may be removed from the solution by repeated crystallization. Neodymium is recovered from this solution as the double magnesium nitrate by continued fractionation.
Three alternative methods may be mentioned here, which give high purity material and are less tedious than the one described above. These are (1) ion exchange, (2) metallothermic reduction, and (3) electrolysis
In the ion exchange process, the nitric acid solution of the rare earth oxides obtained above is passed through a sulfonated styrene-divinylbenzene copolymer or other cation exchange resin in the hydrogen form. The rare earths are selectively eluted by flowing down a chelating solution of ethylenediamine tetraacetic acid (EDTA), or citric acid, or nitrilotriacetate (NTA) through the loaded column. The most stable complexes are eluted first. Metal ions are selectively stripped out in successive stages.
In the metallothermal reduction, the mixture of rare earth oxides obtained above is first converted to their halide salts. This is done by heating the oxidesat 300 to 400°C with dry and purified hydrogen fluoride, or preferably, by allowing dry hydrogen fluoride to pass over rare earth oxides and ammonium fluoride at 300-400°C. If chloride salt is desired, the oxides must be heated with ammonium chloride. For example, neodymium oxide may be converted to its fluoride or chloride:
Nd2O3 + 6NH4F?HF → 2NdF3 + 6NH4F↑ + 3H2O↑
Nd2O3 + 6NH4Cl → 2NdCl3 + 6NH3↑ + 3H2O↑
Neodymium, along with lanthanum, cerium and praseodymium, has low melting points and high boiling points. The fluorides of these and other rare earth metals are placed under highly purified helium or argon atmosphere in a platinum, tantalum or tungsten crucible in a furnace. They are heated under this inert atmosphere or under vacuum at 1000 to 1500°C with an alkali or alkaline earth metal. The halides are reduced to their metals:
2NdF3 + Ca → 2Nd + 3CaF2
NdCl3 + 3Li → Nd + 3LiCl
The crucible is allowed to cool and is held at a temperature slightly above the melting point of neodymium for a sufficient time to allow separation of the metal.
In the electrolytic process, a fused mixture of anhydrous rare earth chlorides (obtained above) and sodium or potassium chloride is electrolyzed in an electrolytic cell at 800 to 900°C using graphite rods as the anode. The cell is constructed of iron, carbon or refractory linings. Molten metal settles to the bottom and is removed periodically.

Definition

Metallic element having atomic number 60, group IIIB of the periodic table, aw 144.24, valence of 3. A rare-earth element of the lanthanide (cerium) group. There are seven isotopes

Definition

A toxic silvery element belonging to the lanthanoid series of metals. It occurs in association with other lanthanoids. Neodymium is used in various alloys, as a catalyst, in compound form in carbon-arc searchlights, etc., and in the glass industry. Symbol: Nd; m.p. 1021°C; b.p. 3068°C; r.d. 7.0 (20°C); p.n. 60; r.a.m. 144.24.

Definition

neodymium: Symbol Nd. A soft silverymetallic element belonging tothe lanthanoids; a.n. 60; r.a.m.144.24; r.d. 7.004 (20°); m.p. 1021°C;b.p. 3068°C. It occurs in bastnasiteand monazite, from which it is recoveredby an ion-exchange process.There are seven naturally occurringisotopes, all of which are stable, exceptneodymium–144, which isslightly radioactive (half-life1010–1015 years). Seven artificial radioisotopeshave been produced. Themetal is used to colour glass violetpurpleand to make it dichroic. It isalso used in misch metal (18%neodymium) and in neodymium–iron–boron alloys for magnets. Itwas discovered by Carl von Welsbach(1856–1929) in 1885.

Hazard

(Salts) Irritant to eyes and abraded skin

Hazard

Many of the compounds (salts) of neodymium are skin irritants and toxic if inhaled oringested. Some are explosive (e.g., neodymium nitrate [Nd(NO3)3]).

Safety Profile

Human systemic effects by intracerebral route: blood changes. It may be an anticoagulant lanthanoid. Care in handling is advised. Flammable in the form of dust when exposed to heat or flame. Slight explosion hazard in the form of dust when exposed to flame. Can react violently with air, halogens, N2.Violent reaction with phosphorus above 4OOOC. Many of its compounds are poisons.

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NEODYMIUM Suppliers

Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006608290; 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40241
Advantage
62
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel
821-50328103-801 18930552037
Fax
86-21-50328109
Email
3bsc@sina.com
Country
China
ProdList
15848
Advantage
69
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30132
Advantage
84
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44751
Advantage
61
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202 13764082696;
Email
info@hanhongsci.com
Country
China
ProdList
42982
Advantage
64
Shandong Xiya Chemical Co., Ltd
Tel
4009903999 13355009207
Fax
0539-6365991
Email
3007715519@qq.com
Country
China
ProdList
18736
Advantage
57
BEST-REAGENT
Tel
400-1166-196 18981987031
Fax
028-84555506 800101999
Email
cdhxsj@163.com
Country
China
ProdList
11726
Advantage
57
Spectrum Chemical Manufacturing Corp.
Tel
021-021-021-67601398-809-809-809 15221380277
Fax
021-57711696
Email
marketing_china@spectrumchemical.com
Country
China
ProdList
9664
Advantage
60
Chengdu Ai Keda Chemical Technology Co., Ltd.
Tel
4008-755-333 18080918076
Fax
028-86757656
Email
800078821@qq.com
Country
China
ProdList
9725
Advantage
55
9ding chemical ( Shanghai) Limited
Tel
4009209199
Fax
86-021-52271987
Email
sales@9dingchem.com
Country
China
ProdList
22519
Advantage
55
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View Lastest Price from NEODYMIUM manufacturers

WUHAN CIRCLE POWDER TECHNOLOGY CO.,LTD
Product
ND
Price
US $0.00/KG
Min. Order
100g
Purity
98%+
Supply Ability
100kg
Release date
2021-03-11
Career Henan Chemical Co
Product
NEODYMIUM 7440-00-8
Price
US $1.00/KG
Min. Order
1KG
Purity
98%-99.9%
Supply Ability
200kg
Release date
2020-01-10

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