Diglycol dinitrate—

Diglycol (2,2 -dihydroxydiethyl oxide) is also used as a substitute for glycerine. Diglycol dinitrate, or dinitrodiglycol, is less volatile than nitroglycol and most of it is utilised for the production of smokeless powder. 

TLP (Ger). Treibladungspulver (gun propint). The following suffix designations, eg, TLP/A indicate A—E=single base powder A=nitro-cellulose powder D=DNT added F-M=double base powder F=NC-NG G=NC-diglycol dinitrate K=ball powder N-P=triple base powders V-W=porous powders... 

NEO = diglycol dinitrate (french) 96 Neonite = surface smoothet nitrocellulose gun powder (UK)... 

T4 = RDX (Italy) 68 T 4 plastico = RDX plastizised with 17,3% diglycol dinitrate or with 11 % petroleum (Italy)... 

A-E = single base powder A nitrocellulose powder D DNT added F-M = double base powders F = nitrocellulose nitroglycerine G = nitrocellulose-diglycol dinitrate K = ball powder N-P = triple base powders V-W = porous powders (german) TMEMT = trimethylenetrinitrosamine 71... 

Diglycol dinitrate was used extensively in the Second World War by the German side as one of the main components of -> Double Base Propellants. The explosion heat of diglycol in powder form can be kept lower than the heats of the corresponding nitroglycerine powders they represented the first step towards the so-called cold powders. Diglycol dinitrate and triglycol dinitrate are also employed as rocket propellants. 

The propellant which has exclusively been used for a long time in conventional military weapons is the smokeless (or, more accurately, low-smoke) powder. According to its composition, it can be classified as single-base powders (e.g., nitrocellulose powder), doublebase powders (e.g., nitroglycerine powder) and triple-base powders (e.g., nitrocellulose + nitroglycerine (or diglycol dinitrate) + nitroguanidine powders). 

A number of liquid nitrate esters other than nitrocellulose have been recently used, including diglycol dinitrate, metriol trinitrate, and butane-triol trinitrate, of which diglycol dinitrate has been the most extensively employed. Powders prepared with it or with triglycol dinitrate are lower in calories. This fact is relevant to the service life of the gunbarrels in which these powders are utilized. Such powders are known as cold propellants . 

Guanidine nitrate, which has been prepared from dicyanodiamide and ammonium nitrate, is dehydrated under formation of nitroguanidine, when treated with concentrated sulfuric acid. Nitroguanidine can be incorporated into nitrocellulose powder, nitroglycerine powder, or diglycol dinitrate powder it is not dissolved in the powder gel, but is embedded in it as a fine dispersion. These cold (calorie-poor) powders erode gunbarrels to a much lesser extent than do the conventional hot powders. 

Triglycol dinitrate is less volatile than - Diethylenglycol Dinitrate. It gelatinizes nitrocellulose just as well as diglycol dinitrate, i.e., better than nitroglycerine. 

Its chemical stability is better than that of nitroglycerine or nitrocellulose, and at least as good as that of diglycol dinitrate. 

An expl prepd by mixing 100 parts NC(of N=12.2%) (previously moistened with HgO) with 40 ps TeNMe, 20p Diglycol Dinitrate 0.5 part stabilizer]... 

This substance was used (together with diethylene glycol dinitrate) in Germany during World War II for making double base propellants. It is less volatile than diglycol dinitrate but more soluble in spent acid (Vol. II, p. 155). 

Triple base propellant consists of cellulose nitrate, glycerol trinitrate or diglycol dinitrate, nitroguanidine and a stabilizer. 

Synonyms DEGN Diglycol dinitrate Digol dinitrate Di (hydroxyethyl) ether dinitrate Dinitrodiglycol... 

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