Oxidized collodion

Model studies offer confirmatory evidence. Coating a non-K" sensitive (Coming 015) glass electrode with a thin layer of oxidized collodion endows the glass electrode with sensitivity indistinguishable from that of a simple oxidized collodion electrode. Exposure of such a collodion coated glass electrode to poly-lysine with many fixed -amino cationic sites... 

The following plastic compns contg EGDN, patented by WASAG-Chemie AG, Essen (DAS 1148924) are described in Ref 22b 1) EGDN 38.0, CC (collodion cotton) 0.75, Lackwolle 33 (in 33% soln of butyl acetate) 0.75, liquid DNT/TNT (probably like Tropfol= Dripoil) 2.0, TNT 2.0, AN 52.3, woodmeal 4.0 and iron oxide 0.2% 2) EGDN 34.7,... 

Franke patented in France in 1886, mixtures of nitrated benzene, phenol, naphthalene or naphthol with solid oxidizers, using as binders non-explosive substances, such as drying oils, soln of collodion or of gum, etc Ref Daniel, Diet (1902), 309... 

Dioxane is extensively used as a solvent for cellulose acetate, fats, greases, etc (Ref 14) It was tried on the laboratory scale by Aaronson at PicArsn (Ref 6) as a plasticizer for NC s and found to be a fairly good solvent for Collodion Cotton and Pyrocellulose, but rather poor solvent for Guncotton and High Nitrogen NC (14% N). The resulting jels were very toxic and their dioxane solvent was very difficult to remove by evaporation. This made dioxane an undesirable solvent for NC s, much inferior to acetone and propylene oxide... 

Nitrol. Early Brit plastic safety expl, patented by 0. Silberrad in 1912 (Ref 2). A typical formulation is Nitrol 10, highly. nitrated benzene hydrocarbons 20, collodion cotton 0.5, and AN 69.5%. Under the same name, 0. Silberrad took Brit and US patents on expl mixts contg Nitro-methylnaphthalene 20-25, oxidizer (nitrates, chlorates, perchlorates, etc) 50—60, collodion cotton 0—5 and woodmeal 0—5% (Ref 1)... 

Colloidal Chromium Hydroxide.—The hydrosol is obtained as a deep greeir solution by the peptisation of the hydroxide by means of chromic chloride, or by a solution of copper oxide in ammonia. As already stated, the freshly precipitated hydroxide forms an apparently clear green solution with excess of an alkali hydroxide. That the chromic hydroxide is peptised and not dissoh ed is shown by the fact that it can be completely filtered out by means of a collodion, filter, leaving a colourless filtrate. The colloidal solution is stable while hot, but slowly yields a gel on keeping at ordinary temperatures. ... 

Collodions Collodions are liquid, external preparations with a base of pyroxylin dissolved in a mixture of alcohol and ethyl oxide or similar solvent. 

COLLODION (9004-70-0) Flammable solid (flash point -64°F/-53°C cc). The dry material is a fire and explosion hazard often wetted with water, denatured ethanol, or ethyl alcohol-ethyl ether solution (flash point <-4°F/<-18°C). Dry material, resulting from evaporation, can deflagrate [ignite explosively (flash point 55°F/12 C)]. Contact with strong oxidizers or elevated temperatures can cause fire and explosion. May accumulate static electrical charges may cause ignition of its vapors. Attacks some plastics, rubber, and coatings. 

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