Nitrating acid mixtures

NITRATING ACID MIXTURE, SPENT see ACID MIXTURES, NITRATING... 

NITRATING ACID, MIXTURES NITRIC ACID NITRIC OXIDE... 

A nitration reactor was charged with methanol which was wrongly labeled as xylene. Addition of nitrating acid mixture led to a runaway exothermic reaction which eventually ruptured the reactor as well as the bursting disk, allowing 2700 1 of mixed acid to spray out. 

Materials Required Thermometric titration assembly as per Figure 11.5, minus the burette a stopwatch or timer standard nitrating acid mixture [mix 2 volumes of 70% HN03 (d = 1.41) with 1 volume of 95% H2S04 (<7= 1.82)] Bakelite screw-cap bottle (4 oz. capacity) 2. 

Radical and ionic nitrations are often competitive pathways in strong nitrating acid mixtures. The predominant reaction pathway is determined by the composition of the nitrating medium. Oxides of nitrogen in the nitrating medium add to... 

Cellulose nitrate is usually prepared in nitrating acid mixtures containing besides nitric acid sulfuric acid as a catalyst. The first reaction step involves generation of the nitronium ion (N02 ) ... 

The nitric acid concentration in the nitration acid mixture is usually 20-25%. The degree of nitration can be regulated by changes in the water content. Examples of the solubility and use of cellulose nitrates are given in Table 9-3. As a by-product in the nitration process some cellulose sulfate is also formed (see below). Because this results in instability of the cellulose nitrate, the sulfate groups must be removed by various treatments and the sulfuric acid formed removed by washing. 

Summary TAEN is prepared by reacting triazoethanol with a nitrating acid mixture. During the formation of the TAEN, the liquid product will condense forming an upper liquid layer. After the reaction, this upper layer is simply decanted, washed, and then dried over anhydrous sodium sulfate. Commercial Industrial note For related, or similar information, see Serial No. 

Summary TCTNB is prepared by reacting trichlorobenzene with a nitrating acid mixture composed of nitric and sulfuric acids. The resulting product is then filtered, washed with water, dried, and then recrystallized from benzene. Commercial Industrial note Part or parts of this laboratory process may be protected by international, and/or commercial/industrial processes. Before using this process to legally manufacture the mentioned explosive, with intent to sell, consult any protected commercial or industrial processes related to, similar to, or additional to, the process discussed in this procedure. This process may be used to legally prepare the mentioned explosive for laboratory, educational, or research purposes. 

Prepare a nitrating acid solution by adding 84 grams of 99% nitric acid into suitable flask, and then add 116 grams of 98% sulfuric acid. Then cool this nitrating acid mixture to 5 Celsius by means of an ice bath. After which, gradually add 40 grams of 244... 

C) Preparation of a-Nitronaphthalene (Sm.). To 6 ml of nitrating acid mixture (equal volumes of nitric and sulfuric acids prepared as in section [A]) add in small portions 3 g of naphthalene. Shake after each addition, and do not let the temperature rise above 50°. When all the naphthalene has been added, heat the mixture in a water bath at 60° for twenty minutes, with frequent shaking. Pour the mixture into 150 ml of water and cool. Remove the cake of nitronaphthalene to a 250 ml beaker containing 100 ml of water, and boil gently for five minutes in the hood. Allow to cool for several hours. The crystals which separate out are filtered, pressed between filter paper, and dried. The yield is about 2.5-2.8 g. The product melts at 58-59°. For larger amounts (10 times... 

Nitrating acid mixture, spent, 5.1, 8 Nitrating acid, mixture, spent, all concentrations, unstable Solids containing corrosive liquids, n.o.s., 8... 

However, the second step of the reaction is relatively slow and the concentration of the nitronium ion is low. Sulphuric acid (7664-93-9), which speeds the reaction and maximizes the nitronium ion concentration, is mixed with nitric acid (nitric acid sulphuric acid, 36 61%) and the two are called mixed acid syn. nitrating acid mixture. Spent nitrating acids mixtures have a lower nitronium ion concentration, a higher water concentration, and some organic matter. 

Nitrating Acid Mixture, Acid Mixture, Nitrating Acid Mixed Acid Mixture of concentrated nitric and sulphuric acids. Oxidant, may cause fire in contact with organic materials such as wood, cotton or straw, developing highly toxic gas (brown fumes). Highly corrosive to most metals. IMO 8194... 

Nitrating Acid Mixture. A mixture of nitric acid and sulphuric acids used for the nitration of glycerin, cellulose or other organic substances. This acid mixture coming in contact with organic matter commonly causes fire, unless the mixture contains much water. ICAO A2... 

NITRATE FERTILIZERS NITRATING ACID (mixture Of sulfuric acid and nitric acid in various concentrations)... 

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