Bismuth Metal Bi CAS 7440-69-9 For Low Melting Point Alloys

Bismuth has soft texture, low melting point and stable chemical properties, and is commonly used to prepare fusible alloys, such as alloys composed of lead, tin and other metals, which are widely used in fire fighting devices, fuses, thermal elements and other fields. In addition, bismuth and its compounds have important applications in medicine, cosmetics, semiconductor materials, such as bismuth potassium tartrate for the treatment of stomach diseases, bismuth oxychloride is used to make non-toxic cosmetics.

product details

Bismuth Metal Bi CAS 7440-69-9 For Low Melting Point Alloys

Name: Bismuth Metal, Bismuth powder

Molecular formula: Bi

CAS: 7440-69-9

Molecular weight: 208.98

Description

Bismuth is silvery white or reddish metal, with metallic luster, brittle hard, rhombic crystal system coarse grain crystal. Soluble in hot sulfuric acid, nitric acid, aqua regia, slowly soluble in hot hydrochloric acid, insoluble in water. It is stable at room temperature and burns in a light blue flame when heated to form yellow or brown bismuth oxide. The volume of molten metal increases after condensation. Bismuth exists in nature in the form of free metals and minerals. The minerals are bismuth pyroxene, bismuth bloom and so on. Bismuth metal is obtained by calcining the mineral into bismuth oxide and then reducing it with carbon. High purity bismuth can be obtained by Pyrorefining and electrorefining.

Specification

Name		Bi_5N	Bi_4N	Bi_3N
Molecular formula		Bi	Bi	Bi
CAS		7440-69-9	7440-69-9	7440-69-9
Bi	%	≥99.999	≥99.99	≥99.9
Cu	%	≤0.0001	≤0.001	≤0.005
Pb	%	≤0.0001	≤0.001	≤0.01
Zn	%	≤0.0001	≤0.0005	≤0.005
Fe	%	≤0.0001	≤0.001	≤0.005
Ag	%	≤0.0001	≤0.004	≤0.02
As	%	≤0.0001	≤0.0003	≤0.005
Te	%	≤0.0001	≤0.0003	≤0.005
Sb	%	≤0.0001	≤0.0005	≤0.005
property		Silver-white needles or powder
Application Area		It is used for the preparation of low melting point alloy, semiconductor high-purity material and high-purity bismuth compound. Used as a coolant in an atomic reactor.
package		Conventional packaging, flexible packaging according to customer needs

Packing: topical 25kg / bag or 50kg / bag Conventional packaging, also provided small package: 100g, 200g, 500g, vacuum small package.

Used

It is used for the preparation of low melting point alloy, semiconductor high-purity material and high-purity bismuth compound. Used as a coolant in an atomic reactor. Adding bismuth to steel, aluminum, magnesium and bronze can improve the machinability and wear resistance. Bismuth and aluminum, tin, cadmium, indium constitute a series of low melting point alloy, making electrical appliances, insurance, automatic device signal device, etc. Bismuth tin alloy bullets are used instead of lead bullets. It is used in thermoelectric couple, low-temperature thermoelectric power generation and thermorefrigeration. High purity bismuth is used as a heat carrier or coolant in the nuclear industrial reactor and as a material for the protection of nuclear fission devices.