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Gadolinium Metal (chemical formulGd, CAS No.: 7440-54-2, EINECS NO.: 231-162-2) is a highly versatile rare earth metal with a silver white appearance, exceptional ductility, and unique magnetic properties. Boasting a molecular weight of 157.25, a density of 7.88g/cm³, a melting point of 1313°C, and a boiling point of 3273°C, this material exhibits stability in dry air while losing luster in humid environments. Soluble in acids and insoluble in water, gadolinium metal is available in purity grades from 99% (2N) to 99.99% (4N) as ingots, lumps, or customized sizes. Its diverse capabilities make it a cornerstone in medical imaging, industrial manufacturing, nuclear technology, and magnetic refrigeration, driving advancements across multiple high-growth sectors.
Our gadolinium metal is produced to meet stringent purity standards, with Gd/TRE ratios ranging from 99% (2N) to 99.99% (4N) and total rare earth (RE) content of at least 99%. Rare earth impurities (including Sm, Eu, Tb, and Dy) are limited to a maximum of 1% for 2N grade and as low as 0.01% for 4N grade. Non-rare earth impurities such as Fe, Si, and Cu are controlled at 0.005-0.1%, ensuring optimal performance in sensitive applications like medical contrast agents and nuclear technology.
Gadolinium metal is celebrated for its strong paramagnetic properties, making it ideal for magnetic resonance imaging (MRI) contrast agents and magnetic refrigeration. Its high Curie temperature and ability to undergo magnetic phase transitions enable efficient heat transfer, a key advantage in solid-state refrigeration systems. Additionally, its excellent thermal stability—maintaining properties at temperatures up to 3273°C—makes it suitable for high-temperature industrial processes and nuclear applications.
We provide gadolinium metal in a range of forms, including standard ingots, lumps, and customized shapes (e.g., rods, sheets, powders) to accommodate diverse manufacturing needs. Whether for small-scale laboratory research or large-scale industrial production, our customizable specifications ensure compatibility with existing processes, reducing lead times and optimizing cost-efficiency.
Soluble in acids and resistant to corrosion in specific environments, gadolinium metal integrates seamlessly into various chemical processes. It forms stable compounds such as gadolinium sulfur oxides and gadolinium gallium garnet (GGG), expanding its utility in oscilloscopes, memory storage, and electronic components. This chemical versatility allows for innovation across industries, from electronics to renewable energy.
Material name | Gadolinium metal |
Formula | Gd |
CAS No. | 7440-54-2 |
EINECS NO. | 231-162-2 |
Molecular Weight | 157.25 |
Density | 7.88g/cm3 |
Melting point | 1313°C |
Bolting point | 3273°C |
Appearance | Silver white ingot or lump, or other customized size |
Purity/Specification (Gd/REM) | 99%-99.99% |
Purity | 2N | 2N5 | 3N | 4N | |
RE%min. | 99 | 99 | 99 | 99 | |
Gd/TRE%min. | 99 | 99.5 | 99.9 | 99.99 | |
Rare earth impurities %max. | Sm | subtotal | subtotal | subtotal | subtotal |
Eu | |||||
Tb | |||||
Dy | |||||
Y | |||||
Non rare earth impurities %max. | Fe | 0.05 | 0.03 | 0.02 | 0.01 |
Si | 0.02 | 0.01 | 0.01 | 0.005 | |
Ca | 0.05 | 0.03 | 0.03 | 0.005 | |
Mg | 0.1 | 0.05 | 0.03 | 0.005 | |
Al | 0.05 | 0.02 | 0.01 | 0.005 | |
Cu | 0.1 | 0.05 | 0.05 | 0.005 | |
Ni | 0.1 | 0.1 | 0.1 | 0.005 | |
W+Ta+Nb+Mo+Ti | 0.2 | 0.15 | 0.1 | 0.05 | |
C | 0.08 | 0.05 | 0.03 | 0.01 | |
0 | 0.2 | 0.15 | 0.1 | 0.05 | |
Gadolinium metal is widely used in the production of MRI contrast agents, which enhance the visibility of soft tissues and blood vessels in medical imaging. Gadolinium-based contrast agents (GBCAs) improve the accuracy of diagnoses for conditions such as tumors, cardiovascular diseases, and neurological disorders. The metal’s paramagnetic properties enable it to interact with magnetic fields, producing clearer, more detailed images that help physicians make informed treatment decisions.
In electronics, gadolinium sulfur oxides serve as matrix grids for high-brightness oscilloscopes and X-ray fluorescence screens, delivering sharp, high-contrast images for industrial testing and medical diagnostics. Gadolinium gallium garnet (GGG) is an ideal substrate for magnetic bubble memory storage, offering high density and reliability for data storage devices. Additionally, gadolinium is used in microwave technology and color TV fluorescent powders, enhancing performance and energy efficiency. It is also a key additive in special alloys, improving strength, corrosion resistance, and thermal stability for aerospace and automotive components.
Gadolinium metal exhibits high neutron absorption cross-section, making it an effective material for nuclear reactor control rods and radiation shielding. It helps regulate nuclear fission reactions, ensuring safe and efficient energy production. In radiation detection devices, gadolinium-based scintillators detect gamma rays and neutrons, supporting nuclear safety monitoring and medical imaging applications.
A groundbreaking application of gadolinium metal is in magnetic refrigeration technology. By magnetizing gadolinium salts, the material can achieve ultra-low temperatures close to absolute zero without relying on the Carnot cycle. This solid-state refrigeration method is more energy-efficient and environmentally friendly than traditional refrigeration, with potential applications in cryogenics, medical storage, and consumer electronics.
We supply gadolinium metal in four purity grades: 2N (99% Gd/TRE), 2N5 (99.5% Gd/TRE), 3N (99.9% Gd/TRE), and 4N (99.99% Gd/TRE). All grades have a minimum total rare earth (RE) content of 99%, with impurity levels tailored to specific applications—from general industrial use (2N) to precision medical and nuclear applications (4N).
Yes, when processed into approved gadolinium-based contrast agents (GBCAs), gadolinium metal is safe for medical use. GBCAs are rigorously tested for biocompatibility and are widely used in MRI procedures worldwide. The metal’s paramagnetic properties enable enhanced imaging without causing harmful side effects in most patients, making it a critical tool for modern medical diagnostics.
Gadolinium metal acts as a solid-state refrigeration medium in magnetic refrigeration systems. When exposed to a magnetic field, gadolinium heats up; as the magnetic field is removed, it cools down rapidly. This magnetocaloric effect allows for efficient cooling without refrigerants, producing ultra-low temperatures close to absolute zero. This technology is eco-friendly, energy-efficient, and ideal for applications requiring precise temperature control.
Gadolinium Metal (chemical formulGd, CAS No.: 7440-54-2, EINECS NO.: 231-162-2) is a highly versatile rare earth metal with a silver white appearance, exceptional ductility, and unique magnetic properties. Boasting a molecular weight of 157.25, a density of 7.88g/cm³, a melting point of 1313°C, and a boiling point of 3273°C, this material exhibits stability in dry air while losing luster in humid environments. Soluble in acids and insoluble in water, gadolinium metal is available in purity grades from 99% (2N) to 99.99% (4N) as ingots, lumps, or customized sizes. Its diverse capabilities make it a cornerstone in medical imaging, industrial manufacturing, nuclear technology, and magnetic refrigeration, driving advancements across multiple high-growth sectors.
Our gadolinium metal is produced to meet stringent purity standards, with Gd/TRE ratios ranging from 99% (2N) to 99.99% (4N) and total rare earth (RE) content of at least 99%. Rare earth impurities (including Sm, Eu, Tb, and Dy) are limited to a maximum of 1% for 2N grade and as low as 0.01% for 4N grade. Non-rare earth impurities such as Fe, Si, and Cu are controlled at 0.005-0.1%, ensuring optimal performance in sensitive applications like medical contrast agents and nuclear technology.
Gadolinium metal is celebrated for its strong paramagnetic properties, making it ideal for magnetic resonance imaging (MRI) contrast agents and magnetic refrigeration. Its high Curie temperature and ability to undergo magnetic phase transitions enable efficient heat transfer, a key advantage in solid-state refrigeration systems. Additionally, its excellent thermal stability—maintaining properties at temperatures up to 3273°C—makes it suitable for high-temperature industrial processes and nuclear applications.
We provide gadolinium metal in a range of forms, including standard ingots, lumps, and customized shapes (e.g., rods, sheets, powders) to accommodate diverse manufacturing needs. Whether for small-scale laboratory research or large-scale industrial production, our customizable specifications ensure compatibility with existing processes, reducing lead times and optimizing cost-efficiency.
Soluble in acids and resistant to corrosion in specific environments, gadolinium metal integrates seamlessly into various chemical processes. It forms stable compounds such as gadolinium sulfur oxides and gadolinium gallium garnet (GGG), expanding its utility in oscilloscopes, memory storage, and electronic components. This chemical versatility allows for innovation across industries, from electronics to renewable energy.
Material name | Gadolinium metal |
Formula | Gd |
CAS No. | 7440-54-2 |
EINECS NO. | 231-162-2 |
Molecular Weight | 157.25 |
Density | 7.88g/cm3 |
Melting point | 1313°C |
Bolting point | 3273°C |
Appearance | Silver white ingot or lump, or other customized size |
Purity/Specification (Gd/REM) | 99%-99.99% |
Purity | 2N | 2N5 | 3N | 4N | |
RE%min. | 99 | 99 | 99 | 99 | |
Gd/TRE%min. | 99 | 99.5 | 99.9 | 99.99 | |
Rare earth impurities %max. | Sm | subtotal | subtotal | subtotal | subtotal |
Eu | |||||
Tb | |||||
Dy | |||||
Y | |||||
Non rare earth impurities %max. | Fe | 0.05 | 0.03 | 0.02 | 0.01 |
Si | 0.02 | 0.01 | 0.01 | 0.005 | |
Ca | 0.05 | 0.03 | 0.03 | 0.005 | |
Mg | 0.1 | 0.05 | 0.03 | 0.005 | |
Al | 0.05 | 0.02 | 0.01 | 0.005 | |
Cu | 0.1 | 0.05 | 0.05 | 0.005 | |
Ni | 0.1 | 0.1 | 0.1 | 0.005 | |
W+Ta+Nb+Mo+Ti | 0.2 | 0.15 | 0.1 | 0.05 | |
C | 0.08 | 0.05 | 0.03 | 0.01 | |
0 | 0.2 | 0.15 | 0.1 | 0.05 | |
Gadolinium metal is widely used in the production of MRI contrast agents, which enhance the visibility of soft tissues and blood vessels in medical imaging. Gadolinium-based contrast agents (GBCAs) improve the accuracy of diagnoses for conditions such as tumors, cardiovascular diseases, and neurological disorders. The metal’s paramagnetic properties enable it to interact with magnetic fields, producing clearer, more detailed images that help physicians make informed treatment decisions.
In electronics, gadolinium sulfur oxides serve as matrix grids for high-brightness oscilloscopes and X-ray fluorescence screens, delivering sharp, high-contrast images for industrial testing and medical diagnostics. Gadolinium gallium garnet (GGG) is an ideal substrate for magnetic bubble memory storage, offering high density and reliability for data storage devices. Additionally, gadolinium is used in microwave technology and color TV fluorescent powders, enhancing performance and energy efficiency. It is also a key additive in special alloys, improving strength, corrosion resistance, and thermal stability for aerospace and automotive components.
Gadolinium metal exhibits high neutron absorption cross-section, making it an effective material for nuclear reactor control rods and radiation shielding. It helps regulate nuclear fission reactions, ensuring safe and efficient energy production. In radiation detection devices, gadolinium-based scintillators detect gamma rays and neutrons, supporting nuclear safety monitoring and medical imaging applications.
A groundbreaking application of gadolinium metal is in magnetic refrigeration technology. By magnetizing gadolinium salts, the material can achieve ultra-low temperatures close to absolute zero without relying on the Carnot cycle. This solid-state refrigeration method is more energy-efficient and environmentally friendly than traditional refrigeration, with potential applications in cryogenics, medical storage, and consumer electronics.
We supply gadolinium metal in four purity grades: 2N (99% Gd/TRE), 2N5 (99.5% Gd/TRE), 3N (99.9% Gd/TRE), and 4N (99.99% Gd/TRE). All grades have a minimum total rare earth (RE) content of 99%, with impurity levels tailored to specific applications—from general industrial use (2N) to precision medical and nuclear applications (4N).
Yes, when processed into approved gadolinium-based contrast agents (GBCAs), gadolinium metal is safe for medical use. GBCAs are rigorously tested for biocompatibility and are widely used in MRI procedures worldwide. The metal’s paramagnetic properties enable enhanced imaging without causing harmful side effects in most patients, making it a critical tool for modern medical diagnostics.
Gadolinium metal acts as a solid-state refrigeration medium in magnetic refrigeration systems. When exposed to a magnetic field, gadolinium heats up; as the magnetic field is removed, it cools down rapidly. This magnetocaloric effect allows for efficient cooling without refrigerants, producing ultra-low temperatures close to absolute zero. This technology is eco-friendly, energy-efficient, and ideal for applications requiring precise temperature control.
