Tellanylidenecadmium

CdTe

tellanylidenecadmium

CAS1306-25-8
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
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Identification

CAS Number
1306-25-8
EC Number
215-149-9
UN Number
2570
Index Number
048-001-00-5
PubChem CID
91501

Physical-chemical properties

Molecular Formula
CdTe
Molar Mass
240.00 g/mol
IUPAC Name
tellanylidenecadmium

Chemical Identifiers

InChI
InChI=1S/Cd.Te
InChI Key
RPPBZEBXAAZZJH-UHFFFAOYSA-N

Overview

Tellanylidenecadmium (CAS 1306-25-8) is a binary inorganic compound combining cadmium and tellurium elements with semiconductor properties and significant toxicity concerns. This telluride compound, with the molecular formula CdTe and a molecular weight of 240 g/mol, represents an important member of the II-VI semiconductor family. The EC number 215-149-9 identifies this crystalline material in European chemical databases, where it is recognized for its unique optoelectronic characteristics. Tellanylidenecadmium exhibits a cubic crystal structure at room temperature, providing excellent photovoltaic and photoconductivity properties that make it valuable in various technological applications. The compound poses significant safety considerations due to its classification under multiple acute toxicity categories (Acute Tox. 4) and severe environmental hazards (Aquatic Acute 1, Aquatic Chronic 1). The GHS07 and GHS09 pictograms indicate both health hazards and environmental dangers, requiring careful handling protocols. Transportation falls under ADR class 6.1, reflecting its toxic nature. Unlike complex organometallic compounds such as tricyclohexylstannanylium hydroxide, tellanylidenecadmium maintains a simpler binary structure while presenting comparable handling challenges. Primary industrial applications include semiconductor device manufacturing, particularly in thin-film photovoltaic cells where its direct bandgap properties enable efficient solar energy conversion. The compound also serves in infrared detection systems and specialized optical components. Additionally, tellanylidenecadmium finds use in quantum dot research and advanced materials development, where its nanoscale properties offer unique advantages over conventional semiconductor materials. OYSI maintains technical-grade tellanylidenecadmium availability for qualified industrial customers throughout Europe, ensuring compliance with relevant safety and environmental regulations.

Safety & Classification

Warning
Classification:

Acute Tox. 4 *; Acute Tox. 4 *; Acute Tox. 4 *; Aquatic Acute 1; Aquatic Chronic 1

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H332

Harmful if inhaled.

H312

Harmful in contact with skin.

H302

Harmful if swallowed.

H400

Very toxic to aquatic life.

H410

Very toxic to aquatic life with long lasting effects.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Inhalation

Harmful

Measures if vapours or dust are inhaled

First Aid Actions

  • +P304IF INHALED:
  • +P340Remove person to fresh air and keep comfortable for breathing.
  • +P311Call a POISON CENTER/doctor.

Related hazard statements:

Skin Contact

Harmful

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Ingestion

Harmful

Measures if substance is accidentally swallowed

First Aid Actions

  • +P301IF SWALLOWED:
  • +P330Rinse mouth.
  • +P331Do NOT induce vomiting.
  • +P310Immediately call a POISON CENTER/doctor.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number2570
ADR Class6.1
Packing GroupII
Tunnel CodeD/E
Proper Shipping NameCadmiumtellurid, fest
Marine PollutantNo

Frequently Asked Questions

What is tellanylidenecadmium?

Tellanylidenecadmium is an inorganic compound with the chemical formula CdTe and CAS number 1306-25-8. This binary semiconductor material consists of cadmium and tellurium atoms in a crystalline structure. With a molecular weight of 240 g/mol, it belongs to the II-VI semiconductor family and exhibits unique optoelectronic properties that make it valuable in various technological applications.

What are the physicochemical properties of tellanylidenecadmium?

Tellanylidenecadmium is a crystalline solid at room temperature with a zinc blende or wurtzite crystal structure. It appears as a dark-colored material, typically black or dark gray, and is generally insoluble in water. The compound has a high melting point and exhibits semiconductor properties with a direct bandgap, making it suitable for optoelectronic applications.

What is tellanylidenecadmium used for?

Tellanylidenecadmium is primarily used in the manufacturing of photovoltaic solar cells, particularly thin-film solar panels where it serves as the light-absorbing layer. It is also utilized in infrared detectors, gamma-ray detectors, and other optoelectronic devices. The compound finds applications in research and development of semiconductor technologies and quantum dots for various electronic applications.

How to handle tellanylidenecadmium safely?

Tellanylidenecadmium must be handled with appropriate personal protective equipment including gloves, safety goggles, and respiratory protection due to its Acute Tox. 4 classification. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation. Avoid skin contact and ingestion, and ensure proper training on handling procedures before use to minimize exposure risks.

How to store tellanylidenecadmium correctly?

Tellanylidenecadmium should be stored in a cool, dry, well-ventilated area away from incompatible materials and heat sources. Keep containers tightly closed and properly labeled according to GHS requirements with appropriate pictograms (GHS07, GHS09). Storage areas should be secure and accessible only to trained personnel, with appropriate spill containment measures in place.

What to do in case of contact with tellanylidenecadmium?

In case of skin contact with tellanylidenecadmium, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water. If inhaled, move the person to fresh air and seek medical attention if breathing difficulties occur. For eye contact, rinse immediately with plenty of water for at least 15 minutes. Seek immediate medical attention for any significant exposure.

How to dispose of tellanylidenecadmium appropriately?

Tellanylidenecadmium must be disposed of as hazardous waste through licensed waste management companies due to its toxic properties and environmental hazard classification. Never dispose of it in regular waste streams or pour down drains. Contact specialized chemical waste disposal services that can handle toxic materials and ensure compliance with local environmental regulations and waste disposal requirements.

How to transport tellanylidenecadmium?

Tellanylidenecadmium is classified as ADR Class 6.1 (toxic substances) Packing Group II for transport purposes. It must be packaged in appropriate UN-specification containers with proper labeling and documentation. Transportation requires compliance with dangerous goods regulations, including proper vehicle placarding and driver certification for handling toxic materials during transit.

Is tellanylidenecadmium subject to specific regulations?

Tellanylidenecadmium is subject to REACH registration requirements in Europe and CLP classification as Acute Tox. 4 and aquatic hazard categories. While not currently listed as a SVHC substance, it requires proper safety data sheets and hazard communication due to its toxic properties. Users must comply with occupational exposure limits and environmental protection measures.

Where to buy tellanylidenecadmium in Europe?

Tellanylidenecadmium is available through OYSI, a specialized European distributor of technical chemicals and advanced materials. As an established chemical supplier, OYSI can provide this semiconductor material with proper documentation, safety data sheets, and regulatory compliance support to qualified industrial and research customers throughout Europe.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.