Sulfur liming

Calcium Sulfide (Crude CaS is called Sulfurated lime, Calcic liver of sulfur. Liver of lime. Hepar caicis or Oldhamite). CaS mw 72.14 colorl cub cryst the crude material is yel to pale grey odor of H2S in moist air unpleasant alkaline taste mp > 2000° (decompn) d 2.5g/cc RI 2.137. V sol in solns of amm salts sol in hot w with partial decompn si sol in cold w insol in ethanol. CA Registry No [20548-54-3]. Prepn is by heating pure CaC03 in a stream of H2S+H2 at 1000°... 

Leaves with white powdery costing. Cause Powdery mildew. Usually this fungal disease is harmless, but if it becomes severe, spray plants with sulfur, lime-sulfur, or a solution of sodium carbonate (washing soda) or sodium bicarbonate (baking soda). 

S 44.44%. Pure CaS prepd in the laboratory by heating pure CaCOj in a stream of HjS 4- Hz at 1000 Ehrlich in Handbook of Preparative Inorganic Chemistry vol, 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) p 938. Crude calcium sulFide, erroneously called sulfurated lime, calcic fiver of sulfur, liver of lime, hepar catch, made by igniting calcium sulfate with carbonaceous matter. Con tains not less than 55% CaS the balance is calcium sulfate, sulfite and carbonate, and the ash from the carbonaceous material. See MettoPs vol III, p 740 (1928). Luminous calcium sulfide or Canton s phosphorus made by igniting a mixture of CaCOa and S with very small quantities of Bi or Mn salts, etc. Verneuil, Compt. Rend. 103, 600 (1886) ... 

Where kilns are fired with a fuel containing significant amounts of sulfur, and low sulfur lime is required, the air to fuel ratio and/or kiln temperatures need to be controlled to ensure that calcium sulfate on the surface of the particles is decomposed and that sulfur dioxide is eliminated from the kiln in the exhaust gases. 

Examples Compost can be produced at home, along with compost tea. Coffee groimds can often be obtained for free fi om restaurants and eoffee houses. Some examples of soil conditioner include bonemeal, peat, coir, manme, straw, vermiculite, sulfur, lime, blood meal, chemical fertilizers and sphagmun moss. Mulches are also a form of soil conditioner, as they are used to help the soil retain moisture and nutrients so that plants remain healthy. 

More recently, in the nineteenth century, there was a great increase in the application of foreign chemicals to agriculture. Discovered or, more precisely, rediscovered was the usefulness of sulfur, lime sulfur (calcium poly sulfides), and Bordeaux mixture (basic copper sulfates). With the exception of formaldehyde, inorganic chemicals provided farmers with their major weapons. 

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