Centralite

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Centralite^[1]

IUPAC name 1,3-diethyl-1,3-diphenylurea
Other names Ethyl centralite
Identifiers
CAS number	85-98-3^Y
PubChem	6828
ChemSpider	6567^N
Jmol-3D images	Image 1
SMILES O=C(N(c1ccccc1)CC)N(c2ccccc2)CC
InChI InChI=1S/C17H20N2O/c1-3-18(15-11-7-5-8-12-15)17(20)19(4-2)16-13-9-6-10-14-16/h5-14H,3-4H2,1-2H3^N Key: PZIMIYVOZBTARW-UHFFFAOYSA-N^N InChI=1/C17H20N2O/c1-3-18(15-11-7-5-8-12-15)17(20)19(4-2)16-13-9-6-10-14-16/h5-14H,3-4H2,1-2H3 Key: PZIMIYVOZBTARW-UHFFFAOYAC
Properties
Molar mass	268.3535
Appearance	White to light grey crystalline powder
Density	0.8/cm³
Solubility in water	Insoluble
Solubility	Acetone, ethanol and benzene
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Centralite (empirical formula: C₁₇H₂₀N₂O) is a gunshot residue also known as ethyl centralite. Its IUPAC name is 1,3-diethyl-1,3-diphenylurea. Ethyl centralite is insoluble in water, but is soluble in acetone, ethanol and benzene. It is mainly used as a burning rate moderator and stabilizer for smokeless powder, and also a plasticizer for celluloid.

Naming

The term "Centralite" was originally applied to dimethyldiphenylurea developed about 1906 at the German Central War Laboratory Zentralstelle fuer Wissenschaftlichtechnische Untersuchungen in Neubabelsberg as a deterrent coating for smokeless powder in military rifle cartridges. Thereafter, all hydrocarbon-substituted symmetrical diphenyl urea compounds used as smokeless powder deterrents (or moderants) were called centralites after the laboratory. The preferred ethyl centralite became known as Centralite No. 1 and the original methyl centralite was identified as Centralite No. 2. Butyl centralite was also used as a celluloid plasticizer.^[2]^[3]

Notes

↑ Centralite - Compound Summary, PubChem.
↑ Davis, Tenny L. The Chemistry of Powder & Explosives (1943) pages 317-320
↑ Davis, William C., Jr. Handloading National Rifle Association of America (1981) p.30

References

Davis, Tenney L. (1943). The Chemistry of Powder & Explosives (Angriff Press [1992] ed.). John Wiley & Sons Inc. ISBN 0-913022-00-4.
Davis, William C., Jr. (1981). Handloading. National Rifle Association of America. ISBN 0-935998-34-9.

External links

Fine Chemicals & Intermediates : Ethyl Centralite

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