Disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium

Cr2Na2O7

disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium

CAS10588-01-9
GHS03 Gefahrensymbol: Brandfördernd – Flamme über Kreis
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS06 Gefahrensymbol: Giftig – Totenkopf mit Knochen
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
Danger

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Identification

CAS Number
10588-01-9
EC Number
234-190-3
UN Number
3087
Index Number
024-004-00-7
PubChem CID
25408

Physical-chemical properties

Molecular Formula
Cr2Na2O7
Molar Mass
261.97 g/mol
IUPAC Name
disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium

Chemical Identifiers

InChI
InChI=1S/2Cr.2Na.7O/q;;2*+1;;;;;;2*-1
InChI Key
KIEOKOFEPABQKJ-UHFFFAOYSA-N

Overview

Disodium dichromate (CAS 10588-01-9) is an inorganic chromium compound with strong oxidizing properties and high toxicity classification. This orange-red crystalline salt represents one of the most significant industrial chromium compounds, widely utilized across multiple sectors despite its hazardous nature. The compound consists of two chromium atoms in the +6 oxidation state, bridged by oxygen atoms and balanced by two sodium cations, resulting in the molecular formula Cr2Na2O7 with a molecular weight of 261.97 g/mol. The substance exhibits powerful oxidizing characteristics, classified as Oxidizing Solid Category 2 under GHS regulations. Its hazard profile is particularly concerning, earning classifications as a Category 1B carcinogen, mutagen, and reproductive toxicant, alongside acute toxicity ratings across multiple exposure routes. The comprehensive hazard classification necessitates strict handling protocols and specialized storage conditions, reflected in its ADR classification as Class 5.1 oxidizing material. Key industrial applications include leather tanning processes, where it serves as a critical chromium source for producing high-quality leather products. The compound also finds extensive use in metal surface treatment and electroplating operations, providing corrosion-resistant chromium coatings. Additionally, it functions as an essential catalyst in various organic synthesis reactions and serves as a laboratory analytical reagent. Disodium dichromate shares similar applications with dipotassium dichromate, though the sodium variant often provides specific advantages in certain industrial processes due to its distinct solubility characteristics and reaction kinetics. OYSI maintains reliable supply chains for disodium dichromate, ensuring consistent availability for qualified industrial customers with appropriate handling capabilities and regulatory compliance.

Safety & Classification

Danger
Classification:

Ox. Sol. 2; Carc. 1B; Muta. 1B; Repr. 1B; Acute Tox. 2 *; Acute Tox. 4 *; Acute Tox. 3 *; STOT RE...

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H272

May intensify fire; oxidiser.

H350

May cause cancer.

H340

May cause genetic defects.

H330

Fatal if inhaled.

H312

Harmful in contact with skin.

H301

Toxic if swallowed.

H372

Causes damage to organs through prolonged or repeated exposure.

H314

Causes severe skin burns and eye damage.

H334

May cause allergy or asthma symptoms or breathing difficulties if inhaled.

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

Inhalation

Fatal

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:

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:

Ingestion

Toxic

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 Number3087
ADR Class5.1
Packing GroupII
Tunnel CodeE
Proper Shipping NameNatriumdichromat
Marine PollutantNo

Frequently Asked Questions

What is disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium?

Disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium is an inorganic chromium compound with the molecular formula Cr2Na2O7 and CAS number 10588-01-9. This substance has a molecular weight of 261.97 g/mol and belongs to the hexavalent chromium family. It is classified as extremely hazardous due to its carcinogenic, mutagenic, and reproductive toxic properties, requiring strict safety protocols for handling and use in industrial applications.

What are the physicochemical properties of disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium?

Disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium is a crystalline solid compound with strong oxidizing properties. As a chromium(VI) compound, it typically exhibits characteristic orange to red coloration and is highly soluble in water. The substance demonstrates strong oxidizing behavior and can react vigorously with reducing agents and organic materials. Its high solubility makes it readily bioavailable, contributing to its significant health hazards.

What is disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium used for?

Disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium is primarily used in specialized industrial applications requiring strong oxidizing agents. It serves as a raw material in chromium chemistry, metal treatment processes, and certain analytical procedures. Due to its extreme toxicity and carcinogenic properties, its use is heavily restricted and limited to controlled industrial environments with appropriate safety measures and regulatory compliance.

How to handle disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium safely?

Safe handling requires comprehensive personal protective equipment including respiratory protection, chemical-resistant gloves, and full body coverage. Work must be conducted in well-ventilated areas or under fume extraction systems to prevent inhalation exposure. Avoid skin contact, ingestion, and dust generation. Implement strict hygiene protocols including immediate hand washing and clothing changes. Only trained personnel should handle this substance following established safety procedures and emergency response plans.

How to store disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium correctly?

Store in a cool, dry, well-ventilated area away from incompatible materials including reducing agents, organic substances, and flammable materials. Use appropriate containers resistant to chromium compounds and ensure proper labeling with hazard warnings. Implement access controls to restrict handling to authorized personnel only. Maintain storage areas with spill containment measures and emergency equipment readily available for immediate response.

What to do in case of contact with disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium?

Immediate decontamination is critical for any exposure. For skin contact, rinse immediately with copious amounts of water for at least 15 minutes and remove contaminated clothing. If inhaled, move to fresh air immediately and seek medical attention. For eye contact, flush thoroughly with water and seek immediate medical care. In case of ingestion, do not induce vomiting and seek emergency medical treatment immediately. Always consult a physician for any exposure incident.

How to dispose of disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium properly?

Disposal must comply with local, national, and international hazardous waste regulations due to its classification as carcinogenic and toxic waste. Contact licensed hazardous waste disposal companies specialized in chromium compound treatment. Never dispose through normal waste streams or sewage systems. Implement waste minimization strategies and consider recovery or recycling options where technically feasible and environmentally appropriate under professional guidance.

How to transport disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium?

Transportation is regulated under ADR Class 5.1 (Oxidizing substances) with Packing Group II classification. Use approved packaging systems designed for oxidizing materials and ensure proper hazard labeling with GHS pictograms. Vehicles must carry appropriate emergency response information and drivers require hazardous materials transportation certification. Comply with routing restrictions and quantity limitations as specified in transport regulations for oxidizing substances.

Is disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium subject to special regulations?

Yes, this substance is subject to extensive regulatory controls under REACH, CLP, and national chemical safety legislation due to its carcinogenic, mutagenic, and reproductive toxic properties. It requires safety data sheets, exposure scenario documentation, and risk management measures. Users must implement operational controls and worker protection measures. Authorization may be required for certain uses under REACH Article 56, and restrictions may apply to consumer applications.

Where to buy disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium in Europe?

OYSI serves as a specialized European distributor for this highly regulated chromium compound, ensuring compliance with all applicable safety and regulatory requirements. As a professional chemical distributor, OYSI provides proper documentation, safety data sheets, and regulatory support for qualified industrial customers. Due to the substance's hazardous classification, purchases are restricted to authorized users with appropriate handling capabilities and regulatory compliance.

Data Sources

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