Gadolinium atomic absorption standard solution
Gadolinium atomic absorption standard solution
CAS: 7440-54-2;22541-19-1
Molecular Formula: Gd
Gadolinium atomic absorption standard solution - Names and Identifiers
Gadolinium atomic absorption standard solution - Physico-chemical Properties
| Molecular Formula | Gd |
| Molar Mass | 157.25 |
| Density | 7.886 g/mL at 25 °C (lit.) |
| Melting Point | 1313 °C (lit.) |
| Boling Point | 3273 °C (lit.) |
| Flash Point | 3266°C |
| Water Solubility | Soluble in magnesium and diluted acid. Insoluble in water. |
| Appearance | ingot |
| Specific Gravity | 7.898 |
| Color | Silver |
| Exposure Limit | ACGIH: TWA 2 ppm; STEL 4 ppmOSHA: TWA 2 ppm(5 mg/m3)NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) |
| Merck | 13,4347 |
| Storage Condition | Seal and store with argon. |
| Stability | Stable. Powder is highly flammable. Incompatible with strong oxiziding agents, halogens, acids. Powder may react with water or moisture. |
| Sensitive | Air & Moisture Sensitive |
| MDL | MFCD00011022 |
| Physical and Chemical Properties | Gadolinium can be combined directly with most of the elements to form compounds of Gd(III). For example, it can react with nitrogen, sulfur, phosphorus, selenium, carbon, silicon or arsenic to form a binary compound when heated or at elevated temperatures. Unlike other rare earth elements, the gadolinium metal is relatively stable in dry air. But it can quickly lose gloss in the humid air, forming a layer of easy to fall off the gadolinium oxide film. When it falls off, oxidation proceeds to the inside. 4 Gd 3 O2 → 2 Gd2O3 |
| Use | For the atomic energy industry, used as magnetic materials, non-ferrous alloy additives |
Gadolinium atomic absorption standard solution - Risk and Safety
| Risk Codes | R15 - Contact with water liberates extremely flammable gases R36/38 - Irritating to eyes and skin. |
| Safety Description | S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S7/8 - S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. SNeverusewater. - |
| UN IDs | UN 3208 4.3/PG 3 |
| WGK Germany | 3 |
| RTECS | LW3850000 |
| FLUKA BRAND F CODES | 1 |
| TSCA | Yes |
| Hazard Class | 8 |
| Packing Group | III |
Gadolinium atomic absorption standard solution - Introduction
It has paramagnetism and good superconducting electrical properties. It is easily darkened by oxidation in humid air. White oxide is formed when burned in the air. does not react with water. Soluble in dilute acid, colorless salts. It is mainly used to prepare magneto-optical materials and magnetic refrigeration materials. It is also used as a neutron absorbing material in atomic reactors and a catalyst for chemical reactions. It is also used in microwave technology and fluorescent powder for color TV sets.
Last Update：2022-10-16 17:28:21
Gadolinium atomic absorption standard solution - Reference Information
| resistivity | 126 ***-CM, 20°C |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | gadolinium is a silver-white metal with ductile melting point of 1313°C, boiling point of 3266°C and relative density of 7.9004. Gadolinium symbol Gd (English: Gadolinium), one of the elements, atomic sequence 64, belongs to the lanthanide, is also one of the rare earth elements. Gadolinium is ferromagnetic, and the Curie point is about room temperature (19 ° C, 66 ° F), that is, a piece of gadolinium is put into ice water to cool and adsorb the magnet, but the gadolinium will fall off the magnet after returning to temperature. |
| Application | gadolinium has the highest thermal neutron capture cross section and can be used as a reactor control material and a structural material to prevent nuclear radiation. Gadolinium can also be used as an additive for new magnetic materials yttrium iron garnet and yttrium aluminum garnet. Ultra low temperature near absolute zero (0.002K) can be obtained by the method of magnetizing cooling with gadolinium salt. The compound of gadolinium can be used as a matrix material of a fluorescent powder, and is used for manufacturing an X-ray intensifying screen and a projection television device, etc. |
| Application | used in atomic energy industry, as magnetic materials, non-ferrous alloy additives |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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View History
Gadolinium atomic absorption standard solution
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