From Wikipedia, the free encyclopedia
Nitrostarch
Identifiers
Properties
(C6H7N3O11)n
Appearance Light yellow powder
Insoluble
Solubility Soluble in ethanol, diethyl ether, acetone, chloroform, ethyl acetate, nitric acid
Thermochemistry
10797.65 J/g
9279.69 J/g
Related compounds
Related compounds
Starch
Nitrocellulose
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Nitrostarch is a secondary explosive [1] similar to nitrocellulose. Much like starch, it is made up of two components, nitrated amylose and nitrated amylopectin. Nitrated amylopectin generally has a greater solubility than amylose; however, it is less stable than nitrated amylose. [2]

The solubility, detonation velocity, and impact sensitivity depend heavily on the level of nitration. [2]

Synthesis

Nitrostarch is made by dissolving starch in red fuming nitric acid. It is then precipitated by adding the solution to concentrated sulfuric acid. [2]

Nitrostarch can be stabilized by refluxing it in ethanol to drive off the left over nitric acid. [2]

History

Nitrostarch was first discovered by French chemist and pharmacist Henri Braconnot. [3]

In World War I, it was used as a filler in hand grenades. [4]

References

  1. ^ Robert Turkington (26 October 2009). Chemicals Used for Illegal Purposes. John Wiley & Sons. pp. 295–. ISBN  978-0-470-18780-7.
  2. ^ a b c d Liu, Jiping (2019), "Nitrostarch", Nitrate Esters Chemistry and Technology, Singapore: Springer Singapore, pp. 581–598, doi: 10.1007/978-981-13-6647-5_11, ISBN  978-981-13-6645-1, S2CID  239210636, retrieved 2022-02-25
  3. ^ John Pichtel (15 September 2016). Terrorism and WMDs: Awareness and Response, Second Edition. Taylor & Francis. pp. 207–. ISBN  978-1-4987-3901-6.
  4. ^ Zakaria Abdel-rahman Shalash (1955). Studies on nitration of starch stabilization and explosive prop...