Summary: SG is a new type compound germicide and algaecide developed and produced by the plant based on SQ8, displaying strong exterminating and controlling effects against germs, fungus and algae existing in water, also having function of anti-corrosion. In the past years, it has been widely used in petroleum, chemical, fertilizer and feed water system of oil field, approved to be a high-efficient, broad-spectrum, conveniently used, safe germicide and algaecide with good effect.

     1) SG is orange water-soluble liquid, flash point 50 C.deg, specific gravity 0.97, PH=5, its chemical property is stable.
     2) Toxicity: Rat(by mouth): LD50 = 280mg/kg, middle toxic; no catastrophe to TA98, TA100. Fish: Africa crucian carp TLM 5.75mg/L(96 hours), silver carp TLM 2.27mg/kg(96 hours), middle toxic to fish.
     3) Toxicity of degraded matter: SG will be degraded under certain concentration and reaction. Add SG(30ppm) and anti-incrustation corrosion inhibitor into recycling water to make its PH 6.5-10, stop discharge for 24 hours, and then take a sample to test its toxicity to fish, the result: survival rate of silver carp fry is 100% after 96 hours. The content of degraded matter in discharged waste water is low enough to meet state standard.

     1) displaying good effect of germicide and algaecide, with long effective period. It is proved that SG kills nitrobacteria, nitrosobacteria and sulfobacteria at the rate of 99%, also kill other bacteria with good effect and long effective period. It is tested that in feed water system of oil field, SG will exterminate sulfate reductive bacteria effectively and remove the resistance of sulfuric bacteria against dodecyl-dimethyl- benzyl- aniline chloride .
     2) anti-corrosion. It is proved that after adding SG, corrosion of oil field feed water will be decreased 80%
     3) stripping clay
     4) after adding SG into feed water of oil field, the surface tension of water will be decreased, helpful to increase permeability of core; and clay will be prevented from expanding, helpful to the stability of feed water.
     5) SG will gradually degrade under certain concentration and reaction to make discharge safe.

     For recycling cooling water system, impact adding method is adopted, namely when content of bacteria and algae is higher than standard, add SG directly to water in corporation, dosage is 20ppm-30ppm. It is suggested that after added, discharge shall be stopped for 24 hours to get better effect of germicide and safe discharge.For feeding water of oil field to stratum, it is concluded that during feeding, SG shall be added into water in proportion(50ppm-80ppm) according to different situation, entering stratum with feed water. SG can be used with phosphoric water stabilizer, or alternatively used with chlorine gas.

    1) concentration shall not be higher than 20000ppm, or crystal will be precipitated.
     2) It is toxic and a little irritate to skin. After using, stained part of human body shall be washed by soap.
     3) SG contains inflammable matter, so pay attention to safe operation when using and storing. It should be sealed and stored in cool and dry places.