Substance profile

Tellurium dioxide

Tellurium dioxide is a chemical substance with the molecular formula O2Te.

CAS 7446-07-3 O2Te 159.6 g/mol Danger

01 · Identification

What Tellurium dioxide is

Tellurium dioxide is a chemical substance with the molecular formula O2Te. Its molecular formula is O2Te and its molecular weight is 159.6 g/mol. It boils at 1245 °C, melts at 733 °C.

Under the GHS it carries the signal word Danger.

CAS number7446-07-3

EC number231-193-1

Index number052-002-00-6

Molecular formulaO2Te

Molecular weight159.6 g/mol

02 · GHS classification

Hazards and label elements

Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.

Health hazard

Signal wordDanger

Hazard statements assigned to Tellurium dioxide
Code	Hazard statement
H360Df	May damage the unborn child. Suspected of damaging fertility.
H362	May cause harm to breast-fed children.

Precautionary statements: P201, P280, P308, P313

03 · Physical and chemical properties

Tellurium dioxide properties

Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.

Property	Value	Conditions	Source
Boiling point	1245 °C (2273 °F)	at 760 mmHg	DOE PAC
Melting point	733 °C (1351.4 °F)		DOE PAC
Density	5.9 g/cm³	at 25 °C	DOE PAC

Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.

Work with Tellurium dioxide

ATE mixture calculator Calculate acute toxicity estimate for a mixture containing this substance. Storage compatibility What this substance must not be stored next to. Label constructor Build a compliant GHS label with these pictograms and statements.