NaN3 Sodium azide

NaN3 Sodium azide, 1 79 2 139 NaOCiHa Sodium butoxide, 1 88 Na02 Sodium superoxide 4 82 Na2C03 Sodium earbonate, 5 159 Na2Ge(C6Hs)2 Sodium, (diphenyl-germyl)di-, 6 72... 

Azides - Compounds bearing the group -N3, viz. -N=N+=N" usually attached to carbon, e.g. PhN3, phenyl azide or azidobenzene. Also used for salts of hydrazoic acid, HN3, e.g. NaN3, sodium azide. [5]... 

The azides are salts which resemble the chlorides in solubility behaviour, for example silver azide, AgNj, is insoluble and sodium azide, NaN3, soluble in water. Sodium azide is prepared by passing dinitrogen oxide over molten sodamide ... 

By applying the principles discussed in Section 5.4, you can calculate that for every liter of nitrogen (at 50°C and 1.25 atm) generated by Reaction 1, about 2.0 g of sodium azide and 0.63 g of potassium nitrate are required. This means that to inflate a 15-L airbag, the gas generator should contain at least 30 g of NaN3 and 10 g of KN03. 

What is the minimum amount of sodium azide, NaN3, that can be added to an automobile airbag to give a volume of 20.0 L of N2(g) on inflation Make any reasonable assumptions required to obtain an answer, but state what these assumptions are. 

An explosion of the same kind, but using sodium azide, NaN3, is used in air bags in automobiles (Fig. 4.18). The explosive release of nitrogen is detonated electrically when the vehicle decelerates abruptly in a collision. 

FIGURE 4.18 The rapid decomposition of sodium azide, NaN3, results in the formation of a large volume of nitrogen gas. The reaction is triggered electrically in this air bag. 

The azide ion is a highly reactive polyatomic anion of nitrogen, N3 . Its most common salt, sodium azide, NaN3, is prepared from dinitrogen oxide and molten sodium amide ... 

Air can be liquefied, and liquid nitrogen boils at -195.8 °C, but liquid oxygen boils at —183 °C, so nitrogen can be vaporized first. One laboratory preparation of nitrogen is the decomposition of sodium azide, NaN3. 

When an automobile collision activates an air bag, sodium azide, NaN3(g), decomposes to form sodium, Na(s), and nitrogen gas, N2(g). (The gas inflates the bag.) This chemical reaction occurs almost instantaneously. It inflates the air bag quickly enough to cushion a driver s impact in a collision. 

Antimycin A (1 pg/mL) and sodium azide (NaN3, 10 mM, if used alone or 0.1%) act at cytochrome oxidase B (antimycin) and block oxidative phosphorylation (101). 

XY)Sodium Azide, Crystalline. If NaN3 was not manufd at KOW, but purchased outside, it had to comply with the following US Army requirements and tests as-listed in the Pic Arsn Tentative Spec PXSr764(Rev 2), Jan 9, 1942, which became Military Spec MIL-S-20552(1951) (Ref 4) ... 

Acrolein (H2C=CHCH=0) reacts with sodium azide (NaN3) in aqueous acetic acid to form a compound, C3H5N30 in 71% yield. Propanal (CH3CH2CH=0), when subjected to the same reaction conditions, is recovered unchanged. Suggest a structure for the product formed from acrolein, and offer an explanation for the difference in reactivity between acrolein and propanal. 

Alkyl azides. Sodium azide as such is of little use for preparation of alkyl azides by nucleophilic substitution reactions because of solubility problems. The reaction can be carried out under phase-transfer conditions with methyltrioctylam-monium chloride/NaN3.3 An even more effective polymeric reagent can be obtained by reaction of NaN3 with Amberlite IR-400.4 This reagent converts alkyl bromides, iodides, or tosylates into azides at 20° in essentially quantitative yield. The solvents of choice are CH3CN, CHC13, ether, or DMF. 

Amide Sodamide, sodamine, NaNH , white solid, formed by reaction of sodium metal and dry NH3 gas at 350°C, or by solution of the metal in liquid ammonia, Reacts with carbon upon heating, to form sodium cyanide, and with nitrous oxide to form sodium azide, NaN3. 

CAUTION Sodium azide (NaN3) and phenyl acetate are poisonous. Toluene is not recommended since it is carcinogenic. Take appropriate precautions when using any of these chemicals. See appendix 2B for more information. 

CAUTION Sodium azide (NaN3) is poisonous wear gloves. It should not be added until the pH is adjusted. Acidification of sodium azide releases a poisonous gas. This chemical is added to buffers solely as a preservative and is not required if buffers are stored at <4°C. 

An interesting study (85) explores the use of sodium azide as an oxidative agent instead of performic acid. The big advantage offered here is that the oxidation of cysteine to cysteic acid is effected concurrent with the hydrochloric acid hydrolysis. The authors claim that the presence of 0.2% (w/v) NaN3 in the HC1 digestion does not represent an explosion risk. Recoveries of cysteine as cysteic acid were typically —90% for pure proteins. 

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