Brown coat

Berapp, m. rough plaster, brown coat roughcast. 

Acid treatments The principal acid processes were developed in the USA under the name Alodine, and are marketed in the UK as Alocrom and under other names. The original solutions were based on acid solutions containing phosphate, chromate and fluoride ions. Immersion for up to 5 min in the cold or warm solution leads to the deposition of a greenish film containing the phosphates of chromium and aluminium, and possibly some hexavalent chromate. The more recent Alocrom 1 200 process uses an acid solution containing chromate, fluoride and nitrate. Room-temperature immersion for 15 s to 3 min deposits golden-brown coatings which contain chromate as a major constituent. 

Nicholson, D. G. el al., J. Amer. Chem. Soc., 1935, 57, 817 Attempts to dissolve bismuth and its alloys in hot perchloric acid carry a very high risk of explosion. At 110°C a dark brown coating is formed, and if left in contact with the acid (hot or cold), explosion occurs sooner or later. The same is true of antimony and its tervalent compounds. 

Figures 1 and 2 show the Engler boiling point characteristics at 1 mm. of mercury of the two oils and their fractions. A summary of the boiling point data is presented in Table II. These data were obtained in a specially designed vacuum Engler distillation apparatus at pressures ranging from 0.2 to 2.0 mm. of mercury all values were extrapolated to 1 mm. by means of a Brown-Coats chart (I).

Brown, G. G., and Badger, P. A., Brown-Coats Vapor Pressure Chart for Hydrocarbons, ... 

This formula can cool the Liver and calm the wind, nourish the Yin and relax the tendons. It is used when heat affects the Liver and generates wind. The manifestations are high fever, restlessness and irritability, convulsions, impairment of consciousness, a deep red tongue with a dry brown coating, and a wiry and rapid pulse. 

The first difficulty was that a polymer was deposited on the vessel wall in a reaction of oxygen atoms with CHjCHO. This was seen from the appearance of a brown coating at temperatures above 100 °C. 

At lower temperatures a polymer (or solid monomer) was also de-poisted on the vessel wall, although it was not visible. This was verified by heating the vessel to 130°C. after termination of the reaction carried out at a low temperature. The brown coating became visible by heating. 

Lignite Coal. A brownish-black coal that is intermediate in coalihcalion between peat and sub-bituminous coal consolidated coal with a calorific value less than 8,300 Btu per pound (4615 Calories/kg), on a moist, mincial-matter-free basis. Synonyms include brown lignite and brown coat. Further classifications of lignite are made on the basis of calorific value ... 

Leave some iron nails in a moist place for a few days. You will notice that the nails have a brown coating. We say the nails have rusted. 

J.L. Goldstein, R.G.W. Anderson and M.S. Brown, Coated pits, coated vesicles, and receptor mediated endocytosis, Nature 279 (1979) 679-684. 

Ferrous sulfate, FeSO H, 0, is made by dissolving iron in sulfuric acid, or by allowing pyrite to oxidize in air. The green crystals of the substance are efflorescent, and often have a brown coating of a basic... 

Fruit clusters enveloped with a fluffy, gray-brown coating. Cause Botrytis bunch rot. This fungal disease appears in tight fruit clusters and in vines with poor air circulation. For prevention, thin berries within clusters and remove some leaves around fruit. Clean up prunings, cluster stems, and mummified fruit by early spring. Plant resistant cultivars, including Baco No.r, Cascade , Catawba , Concord ,... 

Description Adults golden brown, mottled moths V-t" wingspan). Larvae green caterpillars with brown heads. Eggs light yellowish brown with brown coating. Found throughout North America. 

The coating was baked in three steps. First, it was heated in a convection oven at 100° for six hours. The test piece was then transferred to a vacuum oven and heated under vacuum (ca. 10 torr) as follows 250° for 4 hours, ramped to 350° over 3 hours, and heated at 350° for 45 min. The resultant smooth, dark brown coating had a thickness of 17 microns which was uniform front and back. 

Vanadium suboxide, V20, forms as a brown coating when metallic vanadium is exposed to the air at ordinary temperatures. At higher temperatures it is transformed to the other oxides. It forms no salts. 

The expected composition. WN, was observed as a brown coating on W filaments [320, 321, 322], A composition near WN, (trigonal unit cell) has been observed in the electron microscope in the thinnest regions of nitrided films, but the derived structure contains three notably short N N distances of 1.71 A with eight corresponding W N ones of 2.91 3.03 A [323], The suggested structure is reminiscent of that of fluorite, but we do not feel that this compound is very w ell established. 

Nonahydrate, colorless Or light yellow, large crystals strong alk reaction. On exposure to air becomes covered with a reddish-brown coat of antimony sulfide. Sol in 3 parts cold water, 1 part boiling water inso] in ale dec by weak acids. 

Base coat n. (I) All plaster applied before the finish coat may be a single coat or a scratch coat and a brown coat. (2) The first coat applied to a surface, as paint a prime coat. (3) An initial coat applied to a wood surface before staining or otherwise finishing it. 

Brown coat n. The coat of roughly finished plaster beneath the finish coat in three-coat work, the second coat of plaster, apphed over a scratch coat and covered by the finish coat in two-coat work, the base-coat plaster applied over lath or masonry may contain a greater proportion of aggregate than the scratch coat. 

Scratch coat In three-coat plastering, the first coat of plaster, which is then scratched to provide a bond for the second (brown) coat. 

Care should be taken not to store the iodobeads in the presence of reducing agents, especially volatile ones, such as 2-mercaptethanol. Iodobead activity is readily checked by placing a bead into 1 ml of buffer A containing 1% Nal (or Kl) and observing within a few seconds the development of the brown coating around the bead, which indicates the formation of elemental iodine. 

We can generate electrical energy from a spontaneous oxidation-reduction reaction by using an apparatus called a voltaic cell. The two half-reactions stiU take place, but in a cell the electrons must flow through an external circuit. For example, a piece of zinc metal in a Cu solution becomes coated with a rusty-brown coating of Cu, while the blue color (Cu ) of the solution fades. The oxidation of the zinc metal provides electrons for the reduction of the Cu ions. We can write the two half-reactions as... 

APPLY THE SECOND LAYER. This next coat is called the brown coat and goes on exactly like the first, Vi" thick, mixed with sand, but this time you don t rake the surface. 

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