SCANDIUM
- CAS No.
- 7440-20-2
- Chemical Name:
- SCANDIUM
- Synonyms
- SCANDIUM;SC000205;SC000200;SC000211;SC000212;SC000210;Scandium-45;Scandium lump;scandium atom;SCANDIUM METAL
- CBNumber:
- CB4115641
- Molecular Formula:
- Sc
- Molecular Weight:
- 44.96
- MOL File:
- 7440-20-2.mol
- Modify Date:
- 2024/5/29 14:00:24
| Melting point | 1540 °C (lit.) |
|---|---|
| Boiling point | 2836 °C (lit.) |
| Density | 2.99 g/mL at 25 °C (lit.) |
| solubility | Slowly dissolve in dilute acids. |
| form | powder |
| color | Silver-gray |
| Specific Gravity | 3 |
| Resistivity | 50.5 μΩ-cm, 0°C |
| Water Solubility | Reacts with water. |
| Sensitive | air sensitive |
| Merck | 13,8468 |
| 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) |
| InChIKey | SIXSYDAISGFNSX-UHFFFAOYSA-N |
| CAS DataBase Reference | 7440-20-2(CAS DataBase Reference) |
| EPA Substance Registry System | Scandium (7440-20-2) |
| Poissons Ratio | 0.279 |
|---|---|
| Shear Modulus | 29.1 GPa |
| Hardness, Vickers |
36, (0101) face 132, (0001) face |
| Bulk Modulus | 56.6 GPa |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS02 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H228 | |||||||||
| Precautionary statements | P210-P240-P241-P280-P370+P378 | |||||||||
| Hazard Codes | F,T,Xi | |||||||||
| Risk Statements | 5-11-34-23/24/25-36/37/38-36/38 | |||||||||
| Safety Statements | 26-28-36/37-7/9-36/37/39-16-43-45-27 | |||||||||
| RIDADR | UN 3089 4.1/PG 2 | |||||||||
| WGK Germany | 1 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 2805304000 | |||||||||
| NFPA 704 |
|
SCANDIUM price More Price(19)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 261262 | Scandium powder, 99.9% trace rare earth metals basis | 7440-20-2 | 250MG | ₹13662.25 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 261262 | Scandium powder, 99.9% trace rare earth metals basis | 7440-20-2 | 1G | ₹47770.4 | 2022-06-14 | Buy |
| ALFA India | ALF-045118-KF | Scandium arc-cast pellet, 15.9mm (0.63in) dia | 7440-20-2 | 1pc. | ₹34475 | 2022-05-26 | Buy |
| ALFA India | ALF-043219-FI | Scandium foil, 0.1mm (0.004in) thick, 99.9% (REO) | 7440-20-2 | 50x50mm | ₹67261 | 2022-05-26 | Buy |
| ALFA India | ALF-043219-FF | Scandium foil, 0.1mm (0.004in) thick, 99.9% (REO) | 7440-20-2 | 25x25mm | ₹19821 | 2022-05-26 | Buy |
SCANDIUM Chemical Properties,Uses,Production
Chemical Properties
grey powder
Physical properties
Scandium is a soft, lightweight, silvery-white metal that does not tarnish in air, but overtime, it turns yellowish-pink. It resists corrosion. Scandium reacts vigorously with acids, butnot water. Scandium has some properties similar to the rare-earth elements. Although its position in group 3 places it at the head of the 17 elements of the lanthanide series of rare-earthmetals, scandium, as a metal, is not usually considered a rare-earth. Scandium’s melting pointis 1,541°C, its boiling point is 2836°C, and its density is 2.989 g/cm3.
Isotopes
There are 28 isotopes of scandium, ranging from scandium-36 to scandium-57.Scandium-45 is the only stable isotope and contains about 100% of the natural scandium found in the Earth’s crust. The remaining isotopes are radioactive with half-livesranging from nanoseconds to a few minutes to a few hours to a few days, and therefore,they are not found naturally in the Earth’s crust. The radioactive isotopes of scandiumare produced in nuclear reactors.
Origin of Name
From the Latin word Scandia, for “Scandinavia.
Occurrence
Although scandium is chemically similar to rare-earths, it no longer is considered to be oneof them. Scandium is the 42nd most abundant element found in the Earth’s crust, makingup about 0.0025% of the Earth’s crust. It is widely distributed at 5 ppm on the Earth. (It isabout as abundant as lithium, as listed in group 1.) Scandium is even more prevalent in thesun and several other stars than it is on Earth.Scandium is found in ores of wolframite in Norway and thortveitite in Madagascar. It isalso found in granite pegmatites and monazites. It is common in many of the ores where tinand tungsten are also found.
Characteristics
Scandium is the first element in the fourth period of the transition elements, which meansthat the number of protons in their nuclei increases across the period. As with all the transition elements, electrons in scandium are added to an incomplete inner shell rather than tothe outer valence shell as with most other elements. This characteristic of using electrons inan inner shell results in the number of valence electrons being similar for these transition elements although the transition elements may have different oxidation states. This is also whyall the transition elements exhibit similar chemical activity.
Uses
Scandium was not produced in any quantities until the late 1930s. Its light weight,resistance to corrosion, and high melting point made it especially useful in the aerospaceindustries. In the early 1940s contractors for the U.S. Air Force appropriated almost all of thescandium metal for use in the construction of military aircraft. The pure metal form is produced by the electrolysis of a salt of scandium, ScCl3. The metal has found some other uses in high-intensity lamps that produce a natural spectrum, making it useful for stadium lighting.It is also used in nickel alkaline storage batteries. Several compounds are used as catalysts tospeed up chemical reactions. The radioactive scandium-46 (with a half-life of 83.8 days) emitsbeta radiation. This property makes it useful as a radioactive tracer in the petroleum industryto monitor fractionation products.
Definition
A lightweight silvery element belonging to the first transition series. It is found in minute amounts in over 800 minerals, often associated with lanthanoids. Scandium is used in high-intensity lights and in electronic devices. Symbol: Sc; m.p. 1541°C; b.p. 2831°C; r.d. 2.989 (0°C); p.n. 21; r.a.m. 44.955910.
Hazard
As with other metals, the transition metals and many of their compounds are toxic, andtheir powdered or gaseous forms should not be ingested or inhaled. In addition, all but one ofthe isotopes of scandium are radioactive and should be handled by experienced personnel.
Toxicity evaluation
Scandium is considered non-toxic, though extensive animal testing of scandium compounds has not been done.The median lethal dose (LD50) levels for scandium chloride for rats have been determined as 755 mg/kg for intraperitoneal and 4 g/kg for oral administration.Compounds of scandium should be handled as compounds of moderate toxicity.
SCANDIUM Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6160 | 58 | Inquiry |
| Rare Earth (India) Unit Of Vijay Commercial House | 08046072837 | Mumbai, India | 32 | 58 | Inquiry |
| Nano Research Elements | 08048372588Ext 365 | Delhi, India | 101 | 58 | Inquiry |
| Parmanu Dhatu Nigam | 08048372587Ext 498 | Mumbai, India | 27 | 58 | Inquiry |
| CHEMSWORTH | +91-261-2397244 | New Delhi, India | 6707 | 30 | Inquiry |
| Zhuoer Chemical Co., Ltd | 02120970332; +8613524231522 | China | 3005 | 58 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29897 | 58 | Inquiry |
| Shaanxi Dideu Medichem Co. Ltd | +86-029-89586680 +86-18192503167 | China | 9030 | 58 | Inquiry |
Related articles
- What is scandium used for?
- Scandium is mainly used for research purposes. It has, however, great potential as it has almost the same low density as alumi....
- May 29，2024
- Scandium: Importance, Effects on Microorganisms and Bioaccumulation
- Scandium's vital role in high-tech industries is hindered by mining challenges, yet its diverse impact on microorganisms holds....
- Apr 10，2024
- Scandium: distribution and applications
- Scandium's unique properties enhance performance, energy efficiency, and durability across aerospace, sports, electronics, and....
- Nov 13，2023
7440-20-2(SCANDIUM)Related Search:
1of4
chevron_right