Chromium(2+);dioxido(dioxo)chromium

Cr2O4

chromium(2+);dioxido(dioxo)chromium

CAS24613-89-6
GHS03 Gefahrensymbol: Brandfördernd – Flamme über Kreis
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
Danger

Consulting for Chromium(2+);dioxido(dioxo)chromium

Our experts support you with application, dosage, and compliance.

Request Consultation

Identification

CAS Number
24613-89-6
EC Number
246-356-2
UN Number
3085
Index Number
024-010-00-X
PubChem CID
38824

Physical-chemical properties

Molecular Formula
Cr2O4
Molar Mass
167.99 g/mol
IUPAC Name
chromium(2+);dioxido(dioxo)chromium

Chemical Identifiers

InChI
InChI=1S/2Cr.4O/q;+2;;;2*-1
InChI Key
ZTPKOWRHFDMHPS-UHFFFAOYSA-N

Overview

Chromium(2+);dioxido(dioxo)chromium (CAS 24613-89-6) is an inorganic chromium compound with strong oxidizing properties and significant toxicological hazards. This chemical substance, with the molecular formula Cr2O4 and molecular weight of 167.99 g/mol, represents a complex chromium oxide compound containing both chromium(II) and chromium(VI) oxidation states. The compound is classified under multiple hazard categories including oxidizing solids class 1, carcinogen 1B, and skin corrosive 1A, reflecting its serious health and safety implications. Its EC number 246-356-2 identifies it within European chemical regulations, and its ADR classification 5.1 designates it as an oxidizing substance requiring special transport precautions. The substance exhibits powerful oxidizing characteristics, making it highly reactive with organic materials and reducing agents. Its corrosive nature poses significant risks to skin and respiratory systems, while its carcinogenic classification demands strict handling protocols and exposure controls. The compound's aquatic toxicity classification emphasizes the need for careful environmental management during storage, handling, and disposal operations. In industrial applications, this chromium compound finds use in specialized oxidation processes, electroplating operations, and as an intermediate in the production of other chromium-based chemicals. It shares chemical similarities with related compounds such as trioxochromium and disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium, which are used in comparable industrial processes. The substance's unique oxidation state combination makes it valuable in specific catalytic applications where controlled oxidizing conditions are required. OYSI maintains technical-grade supplies of chromium(2+);dioxido(dioxo)chromium for qualified industrial customers with appropriate handling capabilities and regulatory compliance frameworks.

Safety & Classification

Danger
Classification:

Ox. Sol. 1; Carc. 1B; Skin Corr. 1A; Skin Sens. 1; Aquatic Acute 1; Aquatic Chronic 1

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H271

May cause fire or explosion; strong oxidiser.

H350

May cause cancer.

H314

Causes severe skin burns and eye damage.

H317

May cause an allergic skin reaction.

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

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:

Eye Contact

Harmful

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

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 Number3085
ADR Class5.1
Packing GroupI
Tunnel CodeE
Proper Shipping NameDichromtris(chromat)
Marine PollutantNo

Frequently Asked Questions

What is chromium(2+);dioxido(dioxo)chromium?

Chromium(2+);dioxido(dioxo)chromium is an inorganic chemical compound with the molecular formula Cr2O4 and CAS number 24613-89-6. This chromium oxide compound has a molecular weight of 167.99 g/mol and represents a mixed oxidation state chromium compound. It is classified as a highly hazardous substance due to its oxidizing, carcinogenic, and corrosive properties, requiring strict handling protocols in industrial applications.

What are the physicochemical properties of chromium(2+);dioxido(dioxo)chromium?

Chromium(2+);dioxido(dioxo)chromium is a solid inorganic compound with a molecular weight of 167.99 g/mol. As a chromium oxide compound, it typically appears as a crystalline solid with characteristic metallic luster. The compound exhibits strong oxidizing properties due to the presence of chromium in multiple oxidation states. Its exact solubility and physical appearance may vary depending on preparation method and purity grade.

What is chromium(2+);dioxido(dioxo)chromium used for?

Chromium(2+);dioxido(dioxo)chromium is primarily used in specialized industrial applications requiring strong oxidizing agents. Its applications may include advanced materials synthesis, catalytic processes, and specialized chemical manufacturing. Due to its hazardous classification including carcinogenic properties, its use is restricted to professional industrial settings with appropriate safety controls and expertise in handling dangerous chromium compounds.

How to handle chromium(2+);dioxido(dioxo)chromium safely?

Chromium(2+);dioxido(dioxo)chromium requires maximum safety precautions due to its corrosive and carcinogenic properties. Essential protective equipment includes chemical-resistant gloves, full face protection, and acid-resistant clothing. Work must be conducted in well-ventilated areas or under fume extraction systems. Avoid skin contact, inhalation, and ingestion completely. Only trained personnel should handle this substance following strict occupational safety protocols and emergency procedures.

How to store chromium(2+);dioxido(dioxo)chromium correctly?

Chromium(2+);dioxido(dioxo)chromium must be stored in tightly sealed, corrosion-resistant containers away from incompatible materials. As a Class 5.1 oxidizing agent, keep separated from combustible materials, reducing agents, and organic compounds. Storage areas should be cool, dry, well-ventilated, and restricted to authorized personnel only. Containers must be clearly labeled with appropriate hazard warnings and stored according to local dangerous goods regulations.

What to do in case of contact with chromium(2+);dioxido(dioxo)chromium?

Immediate medical attention is required for any contact with chromium(2+);dioxido(dioxo)chromium due to its severe corrosive and carcinogenic properties. For skin contact, immediately flush with copious amounts of water for at least 15 minutes and remove contaminated clothing. In case of eye contact, rinse continuously with water and seek immediate medical care. If inhaled, move to fresh air and contact emergency services. Never induce vomiting if ingested.

How to dispose of chromium(2+);dioxido(dioxo)chromium appropriately?

Chromium(2+);dioxido(dioxo)chromium must be disposed of as hazardous waste through licensed hazardous waste contractors only. Due to its carcinogenic classification and environmental toxicity, it cannot be disposed of in regular waste streams. Disposal must comply with local and European waste regulations including proper documentation and tracking. Neutralization or treatment may be required before final disposal depending on local regulatory requirements and waste facility specifications.

How to transport chromium(2+);dioxido(dioxo)chromium?

Chromium(2+);dioxido(dioxo)chromium is classified as ADR Class 5.1 (oxidizing substances) Packing Group I, indicating maximum transport restrictions. Transportation requires UN-approved packaging, proper hazard labeling, and dangerous goods documentation. Only certified dangerous goods carriers can transport this substance. Vehicles must carry appropriate emergency equipment and drivers must hold valid dangerous goods training certificates. Segregation from incompatible materials during transport is mandatory.

Is chromium(2+);dioxido(dioxo)chromium subject to special regulations?

Chromium(2+);dioxido(dioxo)chromium is subject to extensive regulatory oversight under European chemical legislation. It falls under REACH regulation requirements for registration and safety data provision. As a carcinogenic substance (Category 1B), it is subject to strict occupational exposure limits and may require authorization for certain uses. Additional restrictions may apply under national legislation regarding chromium compounds and carcinogenic substances in workplace environments.

Where to buy chromium(2+);dioxido(dioxo)chromium in Europe?

Chromium(2+);dioxido(dioxo)chromium is available through OYSI, a specialized European distributor of technical chemicals. As a highly regulated carcinogenic substance, purchase requires proper business credentials, intended use documentation, and compliance with safety regulations. OYSI provides comprehensive technical support, safety documentation, and ensures regulatory compliance for professional customers requiring this specialized chromium compound for legitimate industrial applications.

Data Sources

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