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EXTOXNETPIP - SULFUR Page 3of4 powder) is low in toxicity to the honeybee through contact and ingestion(358). ENVIRONMENTAL FATE • Breakdown of Chemical in Soil and Groundwater: Sulfur is a component of the environment, and there is a natural cycle of oxidation and reduction reactions which transforms sulfur into both organic and inorganic products. Sulfur in the form of sulfate constitutes about 0.1% of U. S. soils. Elemental sulfur is slowly converted to sulfate in soil by the action of autotrophic bacteria. Elemental sulfur leaches in soil as sulfate at a slow rate. About 3-6%of the sulfur(formulation and purity unspecified) applied at 56 kg/Ha leached through lysimeters of loam soil (soil depth unspecified) as a result of 40 inches of rain over a six-month period. After two years,23-29%of the applied sulfur had leached(359). • Breakdown of Chemical in Surface Water: No information currently available. • Breakdown of Chemical in Vegetation: There is slight oxidation of sulfur to the volatile oxide. Primarily microbial reduction in and on plants; partial incorporation into physiological substances(1). Sulfur may cause plant injury when used at summer temperatures (223). Injury has been reported on apricots, raspberries,cucurbits and certain other"sulfur-shy" plants (207). PHYSICAL PROPERTIES AND GUIDELINES Physical Properties: • Appearance: yellow crystalline solid • Chemical Name, Sulfur • CAS Number: 7704-34-9 (1, 223) • Molecular Weight: 32.064 • Water Solubility: Practically insoluble in water(1, 242) • Solubility in Other Solvents: Readily soluble in carbon disulphide. Very slightly soluble in ether,petroleum ether, toluene, acetone, chloroform, and alcohol;more readily soluble in hot benzene, acetone, carbon disulfide, carbon tetrachloride, liquid ammonia, and methylene iodide (1, 242, 354) • Melting Point: 114.5-115 degrees C (1, 223, 356); 235 degrees F (354) • Vapor Pressure, 5.3 x 10 to the minus 6 mbar at 30.4 degrees C; 8.6 x 10 to the minus 5 mbar at 59.4 degrees C (1, 242). 1 mmHg @ 184 degrees C (354). 3.96 x 10 to the minus 6 mmHg at 30.4 degrees C (356) • Partition Coefficient: Not Available • Adsorption Coefficient: Not Available Exposure Guidelines: • ADI: Not Available • MCL: Not Available • RfD: Not Available • PEL: Not Available • HA:Not Available • TLV: Not Available BASIC MANUFACTURER: Various manufacturers REFERENCES http://extoxnet.orst.edu/pips/sulftir.htm 12/20/2006