DMDNB
Encyclopedia
DMDNB, or also DMNB, chemically 2,3-dimethyl-2,3-dinitrobutane, is a volatile organic compound
Organic compound
An organic compound is any member of a large class of gaseous, liquid, or solid chemical compounds whose molecules contain carbon. For historical reasons discussed below, a few types of carbon-containing compounds such as carbides, carbonates, simple oxides of carbon, and cyanides, as well as the...

 used as a detection taggant
Taggant
A taggant can mean a radio frequency microchip used in automated identification and data capture . In such cases, electronic devices use radio waves to track and identify items, such as pharmaceutical products, by assigning individual serial numbers to the containers holding each product...

 for explosives, mostly in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 where it is virtually the only such taggant in use. Dog
Dog
The domestic dog is a domesticated form of the gray wolf, a member of the Canidae family of the order Carnivora. The term is used for both feral and pet varieties. The dog may have been the first animal to be domesticated, and has been the most widely kept working, hunting, and companion animal in...

s are very sensitive to it and can detect as little as 0.5 parts per billion in the air, as can specialised ion mobility spectrometer
Ion mobility spectrometer
Ion-mobility spectrometry is an analytical technique used to separate and identify ionized molecules in the gas phase based on their mobility in a carrier buffer gas...

s. Its presence allows more reliable explosive detection
Explosive detection
Explosive detection is a non-destructive inspection process to determine whether a container contains explosive material. Explosive detection is commonly used at airports, ports and for border control.-Dogs:...

.

Its formula is CH3-C(CH3)(NO2)-C(CH3)(NO2)-CH3.
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