Pyroxylin

Title: Pyroxylin
CAS Registry Number: 9004-70-0
CAS Name: Cellulose nitrate
Additional Names: nitrocellulose; collodion cotton; soluble gun cotton; collodion wool; colloxylin; xyloidin; celloidin
Trademarks: Parlodion (Mallinckrodt)
Literature References: Variable mixture which consists chiefly of cellulose tetranitrate. Review: R. T. Bogan et al. in Kirk-Othmer Encyclopedia of Chemical Technology vol. 5 (Wiley-Interscience, New York, 3rd ed., 1979) pp 129-143.
Properties: Yellowish-white, matted mass of filaments, having the appearance of raw cotton. Highly flammable; pyroxlin with higher nitrogen content may explode! When kept in well-closed containers and exposed to light it dec. Sol in 25 parts of a mixture of 1 vol alcohol and 3 vols ether; also sol in methanol, acetone, glacial acetic acid, amyl acetate. Keep loosely packed in cartons and protected from light and moisture. Can be shipped with safety only when wet with 25-30% water or alcohol.
Use: In manuf of collodions; in lacquer coatings, inks, adhesives. Cellulose hexanitrate is used in explosives and propellants. Celloidin is used for embedding sections in microscopy; in electrotechnics, photography, galvanoplasty.
Therap-Cat: Topical protectant.
Keywords: Topical Protectant.
Pyrrobutamine Pyrrocaine Pyrrolidine Pyrrolnitrin Pyrrolysine

Nitrocellulose[1]
Nitrocellulose-2D-skeletal.png
Nitrocellulose-3D-balls.png
Identifiers
CAS number 9004-70-0 YesY
Properties
Molecular formula C6H9(NO2)O5
C6H8(NO2)2O5
C6H7(NO2)3O5
Molar mass Variable
Appearance Yellowish white cotton-like filaments
Melting point 160–170 °C (ignites)
Hazards
NFPA 704
NFPA 704.svg
3
2
3
Flash point 4.4 °C; 39.9 °F; 277.5 K
LD50 10 mg/kg (mouse, IV)
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Nitrocellulose (also: cellulose nitrate, flash paper, flash cotton, guncotton, flash string) is a highly flammable compound formed by nitrating cellulose through exposure to nitric acid or another powerful nitrating agent. When used as a propellant or low-order explosive, it was originally known as guncotton. If the cellulose is not fully nitrated then it has found uses as a plastic film and in inks and wood coatings.[2]Nitrocellulose plasticized by camphor was used by Kodak, and other suppliers, from the late 1880s as a film base in photography, X-ray films and motion picture films; and was known as 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.