ee 
‘ 
ON COLLOID CHEMISTRY AND ITS INDUSTRIAL APPLICATIONS. 103 
is mechanically entangled in it during the process of incorporation. Aubert 
and Nauckoff have patented the addition of cork dust for the purpose 
of retaining air in the explosive. Colloids can be made with nitro-cellulose 
and liquid aromatic nitro-hydrocarbons. These are used both with 
and without nitro-glycerin. When used with the latter the purpose 
is to prevent the freezing of the explosive, since on thawing dangerous 
exudation of nitro-glycerin is apt to occur by the liquid not being completely 
re-absorbed into the colloid. Modern propellant explosives all consist 
of a colloided nitro-cellulose with or without admixture of nitro-glycerin. 
Investigations into their micro-structure and other properties have 
been carried out, but have not been published. 
BIBLIOGRAPHY. 
Prmst, Viscosity of Nitro-cellulose, ‘ Zeit. f, ges. Schiess u. Sprengstoffwesen,’ 1910 
(5), 409-413. 
Mosentuat, Nitro-cellulose, ‘J.S8.C.I.’ 1911 (80), 782-786. 
Prust, Viscosity of Nitro-cellulose, ‘ Zeit. f. Ang. Ch.’ 1911 (24), 968-972. 
Mann, Gases from Blasting Explosives, Perth, W.A. 1911, ‘J.S.C.1.’ 1911 (30), 447, 
1281 
Fric, Action of Heat on Nitro-cellulose, ‘Compt. Rend.’ 1912 (154), 31-32. 
Baker, Viscosity of Nitro-cellulose Solutions, ‘J. Chem. Soe.’ 1912 (101), 1409- 
1416; 1913 (103), 1653-1675. 
Biyenam, Viscosity, ‘J. Chem. Soc.’ 1913 (103), 964. 
Scuwarz, Viscosity of Nitro-cellulose, ‘ Zeit. Ch. Ind. Koll.’ 1913 (12), 32-42. 
AmBronn, Polarisation of Nitro-cellulose, ‘ Koll. Zeit.’ 1913 (13), 200-207. 
Prmst, Viscosity of Nitro-cellulose, ‘ Zeit. Ang. Chem.’ 1913 (26), 24-30. 
Scuwaprz, Viscosity of Celluloid, ‘ Zeit. Ch, Ind. Koll.’ 1913 (12), 32-42. 
CHANDELON, Viscosity of Nitro-cellulose, ‘ Bull. Soc. Chim. Belg.’ 1914 (28), 24-32. 
Marreoscnat, Solubility of Nitro-cellulose in Ether-Alcohol, ‘ Zeit. Schiess u, Spreng- 
stoffwesen,’ 1914 (9), 105-106. 
Scuwarz, Solubility of Nitro-cellulose in Alcohol, ‘Caoutchouc et Gutta,’ 1914 
(11), 7964-7967, 8199-8200, 8359-8360. 
Nisuipa, Viscosity of Nitro-cellulose, ‘Caoutchouc et Gutta,’ 1914 (11), 8103- 
8115, 8200-8207. 
Scuwarz, Celluloid: The necessity of colloid chemical views in this industry, ‘ Koll. 
Beihefte,’ 1914 (6), 90-126. 
Hareruaves, Blasting Gelatine, ‘J.S.C.L.,’ 1914 (33), 337-340. 
CHIARAVIGLIO and CorBIno, The system nitro-cellulose-nitro-glycerine, ‘ Rend. d. R. 
Acad. Lincei,’ 1915 (24), 247, 361; ‘ Annali Chim. Appl.’ 1915 (8), 270-271. 
Avsert and Navuckorr, Cork Powder in Nitro-glycerin Explosives, Brit. Pat. 1,283, 
Jan. 26, 1915. 
CELLULOID FROM THE STANDPOINT OF COLLOIDAL 
CHEMISTRY, 
By EK. R. Carysraty, B.Se. (Lond.), F.I.C. 
1. Celluloid: Viscosity and its importance for the Chemistry of Celluloid in theory 
and practice. H. Scuwarz, ‘ Zeitschr. Chem. Ind. Koll.’ 1913 (412), 32-42. 
2 aed The Absorption of Gases, by V. Lurnsure, ‘ J, Chem. Soc.’ 1914 (105), 
-337. 
3. Celluloid Chemistry: Problems of, and the necessity of colloid chemical views 
in this industry, H. Scuwanz, ‘ Kolloidchem. Beihefte,’ 1914 (6), 90-126. 
General Review. 
The literature on the celluloid branch of the nitro-cellulose industry, 
as far as colloidal chemistry is concerned, is as meagre as that on the 
explosive branch. Three papers have been found bearing on this subject : 
(1) The author deals with the viscosity ot alcohol celluloid solutions 
