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DDNP safety




DDNP - General information

 

4,6-Dinitrobenzene-2-diazo-1-oxide,

Synonyms: DINOL, Diazodinitrophenol

 

FORMULA: C6H2N4O5

 

VoD: 4400 m/s @ 0.9 g/cc. 6600 m/s @ 1.5 g/cc. 6900 m/s @ 1.6 g/cc. 7000 m/s @ 1.63 g/cc.

 

EQUIVALENCE: # 8 cap = 0.7 g. # 6 cap = 0.5 g.

 

SENSITIVITY: Friction: less sensitive than mercury fulminate. Small quantities burn like guncotton. Will detonate in quantities larger than 6 g.

 

DRAWBACKS: Obscure chemicals needed.

 

COMPATIBILITY: Nearly all high explosives and metals.

 

ADDITIONAL INFORMATION: Lead block expansion: 326 cc./10 grams

 

 

The recommended primary explosive is DDNP because it’s non toxic, easy to make and not too sensitive. The sensitivity of DDNP to friction is much less than that of mercury fulminate, but it is approximately that of lead azide. DDNP is used with other materials to form priming mixtures, particularly where a high sensitivity to flame or heat is desired. DDNP is often used as an initiating explosive in propellant primer devices and is a substitute for lead styphnate in what are termed "non-toxic" (lead free) priming explosive compositions.

 

DDNP (diazodinitrophenol) is a primary high explosive. It is extensively used in commercial blasting caps that are initiated by black powder safety fuse. It is superior to mercury fulminate in stability but is not as stable as lead azide.

 

DDNP does not detonate when unconfined, but when confined has a velocity of 6900 VOD. For an initiating explosive it is relatively insensitive to friction and impact, but still is powerfull when confined. DDNP has good properties of storage.

 

Important:

 

The diazodinitrophenol must be dried before it will explode. Drying will take 24 hours if done at room temperature, or in 2 hours if the crystals are placed in a beaker suspended in hot water. The diazodinitrophenol must be stored in a sealed glass container. Storing the explosive moist, about 25% water, will increase safety. Dry immediately before use.

 

 

 

Do not store this material dry for long periods of time. For storage, store submerged in water-free kerosene in tightly sealed amber glass bottles away from light.

 

DDNP is desensitized by immersion in water.

 

It decomposes when exposed to direct sunlight and explodes violently when heated to 150 C. Detonates easily by sparks, fire, percussion or friction. It can be compressed substantially without detonation or decomposition and compressed samples can still be easily detonated. DDNP is less sensitive then mercury fulminate and has a greater detonating velocity.

 

It detonates when struck a sharp blow but if it is ignited when it is unconfined, it burns with a quick flash, even in quantities of several grams. This burning produces little or no local shock and will not initiate the explosion of a high explosive.

 

 




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