Airbags , sodium azide

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. 

Watch the Airbags movie eChapter 8.13) and determine the signs of AH, AS, and AG for the decomposition of sodium azide. Could the decomposition of sodium azide be used to inflate airbags if the reaction were endothermic Explain. 

In part because airbag modules, as presently offered, are so extremely expensive, a great deal of research is bang done to develop less expensive and perhaps less risky nonexplosive systems. By 1994, most GM vehicles will have a system that uses no electrical detonator or sodium azide pellets. It will be powered by a pressurized cylinder containing argon gas. These devices are, of course, of little value to the survivor. A CM dealer can explain whether a specific vehicle has these new compressed gas systems. 

Most automobile airbags contain sodium azide (NaNj) as the propellant. When accelerometers detecta crash, the electronic controllerfiresthe charge of sodium azide. Sodium azide decomposes explosively, generating nitrogen gas that fills the airbag. 

D. The decomposition of sodium azide is too fast so it fills the airbags too quickly. 

If the reaction that fills the airbag is the decomposition of sodium azide, represented by the equation, 2NaN3(3 j —> 2Na( s j + 3N2f g,), how many moles of products are produced by the decomposition of 3.0 moles of sodium azide ... 

Another blowing agent which has become important of late is sodium azide, which in addition to being synthesized from sodium amide and chloramine can also be produced from methyl nitrite and hydrazine hydrate. Sodium azide is utilized in the airbags installed in motor vehicles. 

Sodium azide (NaN3) is used in airbags in automobiles. Upon impact, an electrical discharge causes the sodium azide to rapidly decompose into sodium metal and nitrogen gas, as shown by the following equation ... 

Sodium azide is best known as the chemical found in automobile airbags. An electrical charge triggered by automobile impact causes sodium azide to explode and release nitrogen gas inside the airbag. 

CDC has received no reports of sodium azide exposure following automobile airbag deployment. 

Sodium azide is a highly toxic, white crystalline solid. It has come into widespread use in automobile airbags its explosive decomposition to nitrogen gas provides rapid inflation of the airbag. In addition, sodium azide is used in the production of metallic azide explosives and as a preservative in laboratories. It has no current medical uses, but because of its potent vasodilatory effects, it has been evaluated as an antihypertensive agent,... 

Sodium azide is fairly safe to handle and has many uses, while heavy-metal (e.g. lead) azides are shock-sensitive explosives used as detonators [28, 29], Perhaps the most widespread use of an azide is that of sodium azide in airbags, where thermally induced ignition releases nitrogen (for current applications of azides, consult the internet). An important use of the azide ion is the preparation of organic azides, which are important in synthesis [30]. The azide ion is linear and centrosym-metric [31],... 

A word of caution Alkyl azides are explosive, and low-molecular-weight alkyl azides should not be isolated but should be kept in solution. Sodium azide is used in automotive airbags. 

One of the first demonstrations of diamond s usefulness in electroanalysis was the oxidative detection of azide anion in aqueous media [29,30,37]. Sodium azide has been widely used commercially and, in the past, as an inflator for automotive airbags. Azide anion is highly toxic and presents a... 

Sodium azide, NaN3, decomposes explosively to sodium metal and nitrogen gas and is used in automobile airbags. 

Although very toxic, sodium azide (NaNj) is used in some airbags in automobiles. As an igniter, 0.1-0.3 g boron mixed with potassium nitrate or another oxidizing agent is used. On collision, the system is activated within a few milliseconds, the azide is decomposed and nitrogen gas produced blows up the airbag. 

An explosive used for saving lives is sodium azide NaNj. An airbag in passenger cars contains about 200 g of this compound. On collision it explodes and the gases inflate the bag in a very short time. 

When sensors in a car detect a collision, they cause the reaction of sodium azide, NaN3, which generates nitrogen gas to fill the airbags within 0.03 s. How many hters of N2 are produced at STP if the airbag contains 132 g of NaN3 (11.7,11.9)... 

Sodium azide is reactive compound that is widely used commercially as a propellant in automotive airbags. The azide anion is highly toxic and can present health hazards at high levels, in the form of headaches, cytochrome oxidase inhibition and vasodilation. Usage of azide in airbags increases contamination in... 

In contrast, azides are also lifesavers. One of the most common safety features in modern cars is the airbag. If a car is involved in a collision, this inflates following the controlled explosive decomposition of sodium azide to produce a large amount of nitrogen gas ... 

Betterton EA (2003) Environmental fate of sodium azide derived from automobile airbags. Crit Rev Environ Sci Technol 33 423-458... 

Uses Propellant in inflatable automotive airbags preservative in diagnostic medicinals intermediate in explosive mfg. in organic synthesis prep, of hydrazoic acid, lead azide, pure sodium agric. nematicide herbicide in fruit rot control... 

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