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Sulfides black

One commercial process for producing sodium sulfide is as a by-product of barium carbonate production (see Barium compounds). Barite ore, BaSO, is reduced with carbon at 800°C to produce cmde barium sulfide (black ash), which is then leached to dissolve the barium sulfide in solution. The solution is then reduced using sodium carbonate to produce barium carbonate, leaving a weak sodium sulfide solution as the by-product. The sodium sulfide solution may then be concentrated and flaked or crystallized. [Pg.210]

Geochemistry of Archean sulfidic black shale horizons combining data at multiple scales for improved targeting in VMS exploration... [Pg.19]

Metalliferous sediments are a common component of modern ocean-floor sedimentary sequences, recording halos of metal dispersion from seafloor hydro-thermal vent systems (Gurvich, 2006). Sulfidic black shales are also commonly present as intercalations in ancient subaqueous volcanic sequences, where each likely represents a significant hiatus in volcanic activity and deposition. These shale horizons form geophysical anomalies (conductors) that are routinely drilled during exploration for volcanogenic massive sulfide (VMS) base metal deposits. [Pg.19]

Mercuric Sulfide, Black (Ethiops Mineral) Mercuric Sulfide, Red (Vermillion,Artificial Cinnabar, Chinese Red)... [Pg.62]

Ellern(Ref 26,pp 270-80), lists numerous compns contg K chlorate of which the following are examples A)Military or special safety match a)K chlorate 88, charcoal 10 dextrin 2% b)K chlorate 50, Sb sulfide 30 dextrin 20% and c)K chlorate 60, Sb sulfide (black) 6, ground glass 22.5 gum arabic 11.5%... [Pg.587]

Iron(ii) sulfide Black solid No effect A foul-smelling gas is produced with some effervescence... [Pg.28]

Color Silver-white (liquid metal) tin-white White (solid mercury) Black or grayish-black (mercuric sulfide, black) bright scarlet-red blackens on exposure to light (mercuric sulfide, red) White... [Pg.401]

Physical state Heavy, mobile, liquid metal Solid mercury is ductile, maleable mass which may be cut with a knife Crystals, granules or powder rhombic crystals, crystalline solid0 Heavy amorphous powder, also occurs as black cubic crystals (mercuric sulfide, black) powder, lumps, hexagonal crystals (mercuric sulfide, red) Heavy powder rhombic crystals or crystalline powder 1... [Pg.401]

Barium Sulfide, Black. Black ash. This is the crude barium sulfide obtained by strong heating of a mixture of barium sulfate mineral (barite) and charcoal. Contains... [Pg.156]

Mercuric Sulfide, Black. Ethiops mineral. HgS mol wt 232.68. Hg 86.22%. S ] 3.78%. Occurs as a mineral in California. Prepd by passing hydrogen sulfide through a soln of mercuric chloride in hydrochloric acid. [Pg.925]

Analytical Characters.—(1.) Water white ppt., even in presence of tartaric acid, but not of HNOa, HCl, or HaSO. (3.) Hydrogen sulfid black ppt. insoluble in dilute acids and in alkaline sulflds. (3.) Ammonium sulfhydrate black ppt. insoluble in excess. (4.) Potash, soda, or ammonia white ppt., in-... [Pg.170]

Black antimony. See Antimony trisulfide Black ash. See Barium sulfide Black balsam. See Balsam Peru (Myroxylon pereirae)... [Pg.540]

Mercury (II) sulfide Mercury sulfide, black. See Mercury sulfide (ic), black Mercury sulfide (ic), black CAS 1344-48-5 EINECS/ELINCS 215-696-3 Synonyms Mercuric sulfide Mercury (II) sulfide Mercury sulfide, black Empirical HgS... [Pg.2536]

Plate 25 Hydrothermal Vent (Black Smoker in Atlantic Ocean) (see Chap. 4). Hydrothermal solution mixes with ambient cold seawater, resulting to the precipitation of finegrained sulfides black in color... [Pg.231]

Purines and pyrimidine bases Mercuric nitrate-ammonium sulfide Black spots... [Pg.939]

Lead sulfide (black) reacts with hydrogen peroxide to yield lead sulfate (white) ... [Pg.372]

Maleinic Acid Maleic Acid Mercuric Sulfide, Black Mercuric Sulfide... [Pg.151]

Synonyms Mercuric sulfide, black (Ethiops mineral) Mercuric sulfide, red (Vermilon Artificial cinnabar Chinese red) Chemical Formula HgS (ii) Observable Characteristics — Physical State (as shipped) Solid Color Red or black Odor None (iii) Physical and Chemical Properties — Physical State at 15 C and I atm. Solid Molecular Weight 232.7 Boiling Point at I atm. Not pertinent (decomposes) Freezing Point Not pertinent Critical Temperature Not pertinent Critical Pressure Not pertinent Specific Gravity 8 at 20 C (solid) Vapor (Gar) Specific Gravity Not peninent Ratio of Specific Heats of Vapor (Gas) Not pertinent Latent Heat of Vaporization Not pertinent Heat of Combustion Not pertinent Heat of Decomposition Not pertinent (iv) Health Hazards Information —... [Pg.600]

See other pages where Sulfides black is mentioned: [Pg.587]    [Pg.222]    [Pg.99]    [Pg.39]    [Pg.197]    [Pg.441]    [Pg.677]    [Pg.185]    [Pg.590]    [Pg.301]    [Pg.401]    [Pg.401]    [Pg.802]    [Pg.39]    [Pg.752]    [Pg.43]    [Pg.388]    [Pg.998]    [Pg.2361]    [Pg.726]    [Pg.1037]    [Pg.1324]    [Pg.718]    [Pg.1023]    [Pg.1280]    [Pg.213]    [Pg.1111]    [Pg.1316]    [Pg.837]   
See also in sourсe #XX -- [ Pg.252 ]



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