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Attachment B, Technical Revision to the May Day Mine Permit, September 12, 2009. 33 of 35 <br />TradeNww..• DTM Sodium Silicate Solution <br />Dale Ptrpared 060106 Page: 3 of 5 <br />8 EXPOSURE CONTROLSMERSONAL PROTECTION <br />Ertgineedngovnbols: Use with adequate venblatlon. Kmp containers cbsed. Safety shower <br /> and eyewash fountain should be within direct access. <br />Respiratoryprotecaton: Else a NIOSH-approved dust and mist respirator where spray mist <br /> occurs. Observe OSHA regulations for respirator use (29 C.F.R. <br />' §1910.134) <br />S,Hn protection: Wear body-covering protective clothing and gloves. <br />Eyt'prrrt"oa: Wear chemical goggles. <br />9 P SICAL AND CHEMI 1 PROPERTIES <br />Appeamsce. Thick liquid. <br />Color. Clear to hazy whits <br />Odor.' Odorless or musty odor. <br />pH' Approximately IL9 <br />Sped le gmvity: 1.53 g/cm' (20°C), 50.4° Bf,12.791bs/gal <br />Solubility in water.- Miscible. <br />20 STABILMY AND REA-C-DUTY <br />Stability: This material is stable corder all conditions of use and storage. <br />Condirkm ro m vid.• None. <br />Materials to amid: Geis and generates heat when mixed with acid. May react with <br />ammonium salts resulting in evolution of ammonia gas. Flammable <br />hydrogen gas may be produced on contact with alamimmn, tin, lead, and <br />nine. <br />Hazafdous deoompoeition <br />products" Hydrogen. <br />11. TOXICOLOGICAL INFORMATION <br />Acute Dales: When tested for eye and satin irritation potential, a similar material <br />caused severe irritation to the eyes and moderate irritation to the skin. <br />Human experience indicates that skin iritation occurs, particularly, <br />when sodium silicates get on ebthes at the collar, cuffs or other areas <br />where contact and abrasion may occur. <br />The acute oral toxicity of this product has not been tested. When sodium <br />silicates were tested on a 100% solids basis, their siugle dose acute oral <br />LDso In rats ranged from 1500 mglkg to 3200 mg ft. The acute oral <br />lethality resulted from nonspecific causes. Ibis product contains <br />approximately 44% sodium silicate. <br />SubehronlcData: In a study of rats fed sodium silicate in drinking water for three months, <br />at 200,600 and 1800 ppm, changes were reported in the blood chemistry <br />of some animals, bat no specific changes to the organs of the animals due <br />to sodium silicate administration were observed in any of the dosage <br />groups. Another study reported adverse effects to the kidneys of dogs fed <br />sodium silicate In their diet at 2Ag/Wday for 4 weeks, whereas rats fed