Tellurium Atomic weight=127.60 Element symbol=Te Atomic number=52

●Boiling point＝1390℃　●Melting point＝449.8℃　※referring to metal tellurium
●Density = 6.25g/cm３
Making method:
obtained from industrial copper, ashes from lead metallurgy and anode mud in the electrolysis bath.

Description
Metal tellurium or amorphous tellurium is available. Metal tellurium is obtained from amorphous tellurium through heating up. It occurs as silver white hexagonal crystal system with metal luster and its structure is similar to that of selenium. Same as metal selenium, it’s fragile with semi-conductor properties and shows extremely weak electric conductibility (equal to about 1/100,000 of the electric conductibility of silver) under 50℃. The color of its gas is gold yellow. When it burns in the air it shows bluish white flames and generates tellurium dioxide. It doesn’t directly react with oxygen but reacts drastically with halogen element. Its oxide has two kinds of properties and its chemical reaction is similar to that of selenium. It’s toxic.

Specification(High Grade Tellurium Ingot)

Symbol	Te ≥(%)	Foreign Mat.≤ppm
		Pb	Bi	As	Se	Cu	Si	Fe	Mg	Al	S	Na	Cd	Ni	Sn	Ag
MMET5N	99.999	0.5	-	-	10	0.1	1	0.2	0.5	0.2	-	-	0.2	0.5	0.2	0.2
MMET4N	99.99	14	9	9	20	3	10	4	9	9	10	30	-	-	-	-

Spec：4.5～5kg／Ingot   19.8cm*6.0cm*3.8~8.3cm  Trapezoid.
Package: encapsulated withvacuum-packed bag, put in wood box

Application
Mainly used as raw materials for solar energy battery, nuclear radioactivity detection, ultra-red detector, semi-conductor device, cooling device, alloy and chemical industries and as additives for cast iron, rubber and glass.