• Ammonium Dichromate, 100g
  • Ammonium Dichromate, 100g
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Chemical Grade: Lab
Formula: (NH4)2Cr2O7
CAS: 7789-09-5
U.S. DOT: UN1439, Class 5.1, PG II
Get the SDS: Download
Return Policy: See below.
No Fly Shipping! Only via Standard Ground
- USA & Canada.
Discount: Buy at least 12, save 15%
Cat No. - 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.

Ammonium Dichromate only ships to destinations within the 48 contiguous US states and Canada using Standard Ground. No air deliveries allowed.


For chemical quality assurance our chemicals are "factory fresh" from qualified industrial chemical suppliers. To ensure top quality we CANNOT ACCEPT RETURNS on chemical purchases, even if the container is unopened.


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.


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