Ammonium Dichromate, 100g

  • Lab
  • (NH4)2Cr2O7
  • 7789-09-5
  • Download
  • See below.
  • Only via Standard Ground
    - USA & Canada.
  • UN1439, Class 5.1, PG II
  • Buy at least 12, save 10%
  • NC-6006
Price: $15.95
- +

Appears as orange needles. Ammonium Dichromate is used in the classic erupting volcano demonstration. When burned, a small conical heap of this orange powder will produce sparks, steam, and a gray-green ash of chromium (III) oxide and nitrogen gas. Only use in a well ventilated area wearing proper safety equipment such as goggles and gloves.

Caution: Avoid contact with dusts or solutions as they are toxic and irritating to eyes and skin. Strong oxidizer — may explode in contact with organic materials!

Click to see how Ammonium Dichromate is used in our formulas for Photographic Cyanotype Process.

For shipping, Ammonium Dichromate is in hazardous materials Class 5: Oxidizer. It only ships to destinations within the 48 contiguous US states and Canada using Standard Ground by FedEx or UPS • No air deliveries allowed • Customers in Canada should expect additional duties, taxes, and customs clearance service fees due upon delivery.


Unopened chemicals in original packaging may be returned within 30 days of shipment with prior approval. Call 800-372-6726. Customers are responsible for shipping costs.


Chemicals with hazard fees are limited to the 48 contiguous U.S. states. Ground-only (No-Fly) chemicals are limited to the 48 contiguous U.S. states and Canada, unless otherwise stated.


Certificates of Analysis for chemicals are available upon request. Use our request page at this link