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Sodium Dichromate Storage — Na2Cr2O7 Cr(VI) Hazardous Chemistry Tank Selection

Storing Sodium Dichromate? Start Here

Sodium dichromate is a bright orange-to-red crystalline solid used in various industrial applications. It's known for being a strong oxidizer and has significant health and environmental risks. This chemical is often supplied in solid form or as a 40-50% aqueous solution. If you're considering storage options, understanding the compatibility and safety requirements is crucial due to its hazardous nature.

Can you store it in a poly tank?

Yes, sodium dichromate can be stored in polyethylene tanks. High-density polyethylene (HDPE) and other polyolefin materials are generally compatible with sodium dichromate solutions, especially at ambient temperatures. However, for high-temperature applications or concentrated solutions, specialty materials like PTFE-lined steel or Hastelloy may be necessary.

Key Issue: Health and Environmental Risks

Sodium dichromate is a hexavalent chromium compound, classified as a carcinogen. It poses severe health risks if inhaled or if it comes into contact with skin. Additionally, it has significant environmental impacts, particularly in aquatic systems. Proper handling and storage are essential to minimize exposure and environmental contamination.

The safety that actually matters

  • Use appropriate personal protective equipment (PPE) to prevent skin and respiratory exposure.
  • Ensure storage areas are well-ventilated to avoid inhalation risks.
  • Follow all regulatory guidelines for hazardous material storage and handling.

Common questions

What materials are best for storing sodium dichromate?
HDPE and other polyolefins are suitable for most conditions. For high temperatures, consider PTFE-lined steel or Hastelloy.
Are there specific safety regulations to follow?
Yes, comply with OSHA and EPA regulations, including tight exposure limits and waste management protocols.
Can sodium dichromate be used in residential applications?
No, due to its toxicity and environmental impact, it's not suitable for residential use.

Sodium Dichromate storage tanks from OneSource

For sodium dichromate storage, specify HDLPE_OR_XLPE rated to specific gravity 1.9. Verified, compatibility-matched options:

Confirm chemical compatibility and a ZIP freight quote with our team at 866-418-1777.

Designing the storage system, not just picking a tank?

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Sources & References

All compatibility ratings, hazard classifications, and chemical identifiers on this page are sourced from authoritative third-party publications. Verify against the original references before final specification.

  1. PubChem Compound Database — entry for Sodium Dichromate (CID 25408, CAS 10588-01-9). pubchem.ncbi.nlm.nih.gov. National Library of Medicine / NCBI. Canonical chemical-identity reference.
  2. Snyder Industries Chemical Resistance Recommendations — system-of-construction guidance for polyethylene chemical-storage tanks at industrial ASTM 1.9 SG design rating. SNY-3041 Chemical Resistance Chart. Snyder Industries, current edition. Resin + fitting + gasket + bolt MOC matrix.
  3. Equistar Technical Tip — Chemical Resistance of Polyethylene — LDPE / MDPE / HDPE rating chart by concentration and temperature, distributed by Enduraplas. enduraplas.com (PDF). Equistar polyethylene resin chemical-resistance data, distributed via Enduraplas.
  4. NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response. nfpa.org. NFPA 704 'fire diamond' health/flammability/instability/special-hazard rating system (0–4 scale).
  5. UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS), current revision. unece.org/transport/ghs. GHS pictograms, signal words, and H-statement codes referenced in this guide.
  6. ASTM D1998 — Standard Specification for Polyethylene Upright Storage Tanks, current edition. astm.org. Cited as the design-specific-gravity standard (typically 1.9 SG) for industrial chemical-service polyethylene tanks.
  7. NIOSH Pocket Guide to Chemical Hazards — occupational exposure limits, PPE, and IDLH data for Sodium Dichromate. cdc.gov/niosh/npg. CDC / NIOSH chemical-specific occupational-safety reference.

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