Cadmium(2+) diiodide
CdI2
cadmium(2+) diiodide
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Identification
- CAS Number
- 7790-80-9
- EC Number
- 232-223-6
- UN Number
- 2570
- Index Number
- 048-007-00-8
- PubChem CID
- 24635
Physical-chemical properties
- Molecular Formula
- CdI2
- Molar Mass
- 366.22 g/mol
- IUPAC Name
- cadmium(2+) diiodide
Chemical Identifiers
- InChI
- InChI=1S/Cd.2HI/h;2*1H/q+2;;/p-2
- InChI Key
- OKIIEJOIXGHUKX-UHFFFAOYSA-L
Overview
Cadmium(2+) diiodide (CAS 7790-80-9) is an inorganic cadmium salt with high toxicity and distinctive crystalline properties. This binary ionic compound, with the molecular formula CdI2 and a molecular weight of 366.22 g/mol, represents one of the most important cadmium halides in industrial chemistry. Cadmium diiodide exhibits a characteristic layered crystal structure that makes it particularly valuable in specialized applications requiring controlled ionic conductivity and optical properties. The compound appears as white to pale yellow crystals that are highly soluble in water and various organic solvents. The substance carries significant safety concerns, classified under multiple hazard categories including carcinogenicity (Carc. 2), acute toxicity (Acute Tox. 3), and specific target organ toxicity with repeated exposure (STOT RE 2). Its environmental impact is equally concerning, with classifications for both acute and chronic aquatic toxicity. These properties place cadmium diiodide in ADR transport class 6.1, requiring specialized handling protocols and appropriate containment measures during storage and transportation. Industrial applications of cadmium diiodide primarily focus on its role as a precursor in semiconductor manufacturing, particularly in the production of cadmium-based photovoltaic cells and photodetectors. The compound also serves as a catalyst in certain organic synthesis reactions and finds use in specialized analytical chemistry applications. Unlike related compounds such as cadmium(2+);silicon(4+);hexafluoride, cadmium diiodide offers unique solubility characteristics that make it suitable for solution-based processing methods. Due to its hazardous nature, cadmium diiodide requires strict regulatory compliance and specialized handling expertise. OYSI provides this technical-grade compound to qualified industrial customers with comprehensive safety documentation and regulatory support.
Safety & Classification
Carc. 2; Acute Tox. 3 *; Acute Tox. 3 *; STOT RE 2 *; Aquatic Acute 1; Aquatic Chronic 1
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
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
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:
Ingestion
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 Number | 2570 |
| ADR Class | 6.1 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | Cadmiumiodid |
| Marine Pollutant | No |
Frequently Asked Questions
What is cadmium(2+) diiodide?
Cadmium(2+) diiodide is an inorganic chemical compound with the formula CdI2 and CAS number 7790-80-9. This cadmium salt has a molecular weight of 366.22 g/mol and is classified as a hazardous substance with multiple health and environmental risks. It is considered carcinogenic (Category 2), acutely toxic, and poses serious threats to aquatic environments. The compound requires careful handling due to its dangerous properties and is subject to strict regulatory controls in industrial applications.
What are the physicochemical properties of cadmium(2+) diiodide?
Cadmium(2+) diiodide typically appears as a white to pale yellow crystalline solid at room temperature. The compound is hygroscopic and can absorb moisture from air. It demonstrates good solubility in water and polar solvents, forming clear solutions. The substance has a relatively high molecular weight of 366.22 g/mol due to the presence of two iodine atoms. Its crystalline structure and ionic nature contribute to its solubility characteristics and stability under normal storage conditions.
What is cadmium(2+) diiodide used for?
Cadmium(2+) diiodide is primarily used in specialized industrial applications including semiconductor research, photoelectric devices, and as a precursor in the synthesis of other cadmium compounds. It serves as a source of cadmium ions in various chemical processes and analytical applications. The compound may also be utilized in certain photographic processes and as a reagent in laboratory research. Due to its hazardous nature and carcinogenic properties, its use is restricted and carefully regulated in most commercial applications.
How to handle cadmium(2+) diiodide safely?
Cadmium(2+) diiodide requires strict safety protocols including wearing appropriate personal protective equipment such as respirators, chemical-resistant gloves, and protective clothing. Work must be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Due to its carcinogenic and acutely toxic properties (GHS06, GHS08 pictograms), minimize direct contact and avoid generating dust or vapors. Implement proper hygiene measures, wash hands thoroughly after handling, and never eat, drink, or smoke in work areas.
How to store cadmium(2+) diiodide correctly?
Cadmium(2+) diiodide must be stored in a cool, dry, well-ventilated area away from incompatible materials and ignition sources. Keep containers tightly sealed to prevent moisture absorption and contamination. Store in designated areas with restricted access due to its carcinogenic properties. Ensure adequate separation from oxidizing agents, acids, and reactive metals. Storage areas should be equipped with appropriate spill containment measures and emergency response equipment. Regular inspection of containers for damage or deterioration is essential for safe storage.
What to do in case of contact with cadmium(2+) diiodide?
Immediate action is required for any contact with cadmium(2+) diiodide. For skin contact, remove contaminated clothing and wash affected areas thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15-20 minutes. If inhaled, move the person to fresh air immediately. For ingestion, do not induce vomiting and rinse mouth with water. Seek immediate medical attention in all cases, informing healthcare providers about the carcinogenic and toxic nature of the substance.
How to dispose of cadmium(2+) diiodide appropriately?
Cadmium(2+) diiodide must be disposed of as hazardous waste through licensed waste management companies specializing in toxic and carcinogenic materials. Never dispose of this substance in regular waste streams, sewers, or the environment due to its severe aquatic toxicity (GHS09). Waste containers must be properly labeled and segregated according to local and EU regulations. Contact certified waste disposal facilities that can handle cadmium compounds safely. Maintain detailed waste disposal records as required by environmental regulations.
How to transport cadmium(2+) diiodide?
Cadmium(2+) diiodide is classified under ADR Class 6.1 (toxic substances) Packing Group III for transport purposes. Shipments must use approved packaging materials and be properly labeled with hazard identification numbers and transport documentation. Vehicles must carry appropriate emergency response information and drivers require hazardous materials training. Transport containers must be secured to prevent damage during transit. Compliance with ADR regulations, including proper placarding and documentation, is mandatory for legal transportation across European borders.
Is cadmium(2+) diiodide subject to specific regulations?
Cadmium(2+) diiodide is subject to extensive regulatory oversight under REACH, CLP, and various national regulations due to its carcinogenic and toxic properties. The substance requires safety data sheets, exposure scenario documentation, and risk assessments for commercial use. Its classification as Carc. 2 and acute toxicity categories impose strict handling, labeling, and notification requirements. Users must comply with occupational exposure limits and environmental discharge restrictions. Regular monitoring and reporting may be required depending on usage quantities and applications.
Where to buy cadmium(2+) diiodide in Europe?
Cadmium(2+) diiodide is available through OYSI, a specialized European distributor of technical chemicals with expertise in hazardous substances. As an established chemical supplier, OYSI provides proper documentation, safety data sheets, and regulatory compliance support for this restricted substance. Due to the compound's hazardous classification and regulatory requirements, purchase is typically limited to qualified industrial users and research institutions. Contact OYSI directly to discuss specific requirements, quantities, and compliance documentation needed for your application.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.