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Nitrocellulose




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Nitrocellulose[1]
Nitrocellulose-2D-skeletal.png
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Nitrocellulose 01.JPG
Other names Cellulose nitrate; Flash paper; Flash cotton; Flash string; Gun cotton; Collodion; Pyroxylin
Identifiers
CAS number 9004-70-0
Properties
Molecular formula (C6H9(NO2)O5)n
(C6H8(NO2)2O5)n
(C6H7(NO2)3O5)n
Appearance Yellowish white cotton-like filaments
Melting point

160 to 170 °C, Expression error: Unrecognized word "to". K, Expression error: Unrecognized word "to". °F

Hazards
NFPA 704

NFPA 704.svg

3
2
3
 
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Nitrocellulose (also: cellulose nitrate, flash paper) catches fire quickly. It is formed by nitrating cellulose through exposure to nitric acid or another powerful nitrating agent. When used as a propellant or low-order explosive, it is also known as guncotton. Nitrocellulose can be plasticized by camphor. Kodak, and other suppliers, used placticized nitrocellulose as a film base in photograph, X-ray films and motion picture films. People call this nitrate film. After numerous fires caused by unstable nitrate films, safety film started to be used from the 1930s in the case of X-ray stock and from 1948 for motion picture film.

References

  1. Merck Index (11th ed.). p. 8022.