Black oxide of iron

BLACK OXIDE of IRON (1309-37-1) Violent reactions with powdered aluminum (thermite reaction), hydrogen peroxide, calcium disilicide (thermite reaction), ethylene oxide (may cause explosive polymerization), calcium hypochlorite, hydrazine, hydrogen trisulfide, powdered magnesium. Incompatible with powdered calcium carbide, carbon monoxide, chlorides, guanidinium perchlorate, metal acetylides. Contact with the explosive hydrazinium diperchlorate or ammonium perchlorate can be made more heat-, shock-, or friction-sensitive. Incompatible with aluminum-magnesium-zinc alloys. 

If perfectly pure iron is wanted, the filings of malleable iron should be fused with their weight of black oxide of iron, and some green glass to act as a flux. Or pure oxide of iron may be reduced to the metallic state by passing a current of hydrogen gas over it at a red-heat. The metal remains as a spon mass. 

When black oxide of iron is dissolved in acids, both protoxide and peroxide are present. The latter may be precipitated by digestion with carbonate of lime, after which the former can be detected in solution. 

Synonyms cas 1309-37-1 bauxite residue black oxide of iron blended red oxides of iron Burntisland... 

Sample Problem G The black oxide of iron, Fe30, occurs in nature as the mineral magnetite. This substance can also be made in the laboratory by the reaction between red-hot iron and steam according to the following equation. 

Schweppe (1992) describes iron oxide black as a very deep colour of black produced, in ancient Mesopotamia and Minoan Crete, by heating iron oxide derived from clays and ochres to 800-1100°C. It is unclear as to whether this was used in this context as anything other than a fired glaze on ceramics. According to Mayer (1991), black oxide of iron is a synonym for a black synthetic iron oxide pigment if so, then probably this would be magnetite. An iron black is also referred to by the Colour Index (1971) however, this is described in that source as being a form of precipitated antimony. 

Iron oxide Iron (111) oxide Black oxide of iron Colloidal iron oxide... 

WAfER-CEMEl rs. PUZZOLARA. TARBAS. BLACK OXIDE OF IRON. IRON ORES. IVOOD-ASHES. COMPACR" BASALT, CENDREE DE TOURNAT. LORIOT MORTAR. NOTEyON JVATER cements. BLACK OXIDE OF MANGANESE. MATERIALS IN THE UNITED STATES. 

Some pigments promote corrosion owing to their content of soluble salts, their reactivity, or their electrochemical action, and thus should be avoided. Rust of the spotted type can be the consequence of their presence in a paint, especially the hrst coat, e.g. of graphite (noble to steel), some red oxides of iron, gypsum, ochre or lamp black. 

A form of rust. Magnetic, dark-gray-to-black form of iron oxide (Fe304) that forms a protective film on steel surfaces. 

Among the remarkable zinc minerals at Franklin Furnace Dr. Bruce also found another new one which was black. When P. Berthier analyzed a specimen of it, he found it to be composed of the oxides of iron, manganese, and zinc. He gave it the name franklinite derived from Franklin, in order to remind us that it was found, for the first time, in a place to which the Americans have given the name of a great man, whose memory is venerated equally in Europe as in the new world by all the friends of science and humanity (101). 

In the following year Hatchett was made a Fellow of the Royal Society. In 1798 he analyzed an earthy substance, sydneia, which Josiah Wedgwood had found in New South Wales and another specimen of it provided by Sir Joseph Banks (5). This, according to Wedgwood, was composed of a fine white sand, a soft white earth, some colourless micaceous particles, and some which were black. Hatchett found it to consist of siliceous earth, alumine, oxide of iron, and black lead or graphite and concluded that the Sydneian genus, in future, must be omitted in the mineral system. ... 

Ferrous Oxide (Hydrous) A hydrated, jet black product of iron corrosion, FeO nH20. 

The mechanism of the scaling of iron is so complex as to require special mention. Above 570 °C, wiistite (Fei xO) is thermodynamically stable and forms the relatively thick basal layer in the oxide film. This is followed by a magnetite (FesCU) layer which is followed by a final layer of Fe2C>3. Magnetite itself tends to become nonstoichiometric under oxidizing conditions, with excess Fe3+, so that its composition and color can vary from Fe3.oooC>4 (black) toward cubic Fe2.667 04 (i.e., 7-Fe203, chocolate brown). Thus, as outlined in Section 4.6, the oxidation of iron above 570 °C involves mainly... 

The Flux.—It will bo seen, by referring to the different qualities of the ores of iron, that mostly ah of them contain small quantities of other matters and that when these are silica and alumina, which are the most common, either separately or together, they are infusible In the blast furnace but At a temperature below that of melting iron, they will combine, with the oxides of other metals, and form with them combinations that are fhaible. The oxides of iron combine readily with silica, and form a silicate of iron which is very easily fused. If, then, a mixture of lion ore and cool he put into the blast furnace, the reactions may be represented as somewhat like the following, Suppose a mixture is taken of clay and black band, composed as under —... 

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