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Tellurium

PURPOSE AND DESCRIPTION:

Commercial tellurium is made in powder and bars.

Commercial tellurium powder of T1 grade is produced in compliance with GOST 17614-2018.

The particle size is not more than 1 mm. It is produced by hydrochemistry method. Application: paint, glass industry, in metallurgy as addition to special steel and for alloys production.

Tellurium of T-U, T-sT and T-sCh grades is made in bars weighing from 0.1 to 5.0 kg, and

T-sM grade is a powder with grain size not more than 0.14 mm.

CHEMICAL COMPOSITION

Elements

Mass fraction, %

Т–U

Т1

Т–sТ

Т–sCh

Т–sМ

Te

Tellurium, minimum

99.95

99.3

99.985

99.999

99.7

Impurities, max:

Se

Selenium

0.04

0.1

0.014

Not

standardized

0.02

Pb

Lead

0.001

0.1

0.0001

0.00006

0.001

Cu

Copper

0.003

0.05

0.0002

0.00002

0.002

S

Sulfur

0.005

0.04

0.02

Na

Sodium

0.004

0.05

0.004

0.01

Si

Silicon

0.002

0.05

0.002

0.002

Al

Aluminum

0.001

0.04

0.00025

0.00005

0.002

Fe

Iron

0.001

0.1

0.0002

0.00005

0.002

Ag

Silver

0.0002

0.00002

As

Arsenic

0.0001

Ni

Nickel

0.0001

0.00005

Notes:

1. Mass fraction of tellurium except of T1 grade is determined as 100% less overall mass fractions of standardized impurities.

2. Mass fraction of silica and sodium in T-sT tellurium as well as sulfur in T-U tellurium is controlled by the manufacturing technology within standard process parameters and is defined from time to time at the customer’s request.

3. Mass fraction of cadmium, arsenic, mercury, tin, chromium, gallium, indium, cobalt, bismuth, magnesium, manganese, antimony in T-sCh tellurium is controlled by the manufacturer’s technology within standard process parameters and is defined from time to time at the customer’s request.

4. Mass fraction of selenium in T-sCh tellurium is defined but not standardized.

5. Sulfur in T-U tellurium and silica and sodium in T-sT tellurium are disregarded when calculating the number and total amount of standardized impurities.

PACKAGE AND TRANSPORTATION

T1 tellurium is packed, transported and stored in accordance with GOST 17614-2018. Tellurium of T-U, T-sT, T-sCh and T-sM grades is packed, transported and stored in accordance with TU 1769–096–00194429–2004.

GUARANTEED STORAGE PERIOD

Storage period of powdered tellurium is 7 years since the date of production; and it is unlimited for tellurium bars.

QUALITY

The quality management system of JSC "Uralelektromed" is certified by LRQA company for compliance with ISO 9001:2015. Environmental management system, occupational health and safety management system and energy management system are certified by the Certification Association “Russian Register” for compliance with the international standards ISO 14001:2015, OHSAS 18001:2007 and ISO 50001:2011.

The products are registered in accordance with the EC Regulations on Safety of Chemicals - REACH.

FOR INQUIRIES PLEASE CONTACT:
  • N. Serebryakova, Head of sales department (Main Product), JSC "Uralelektromed", Tel.:+7 (34368) 4-73-73, e-mail: snv@elem.ru