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Standard Operating Procedure <br /> For work with NEUTRALIZATION OFAOUEOUSACID/BASE-WASTE. <br /> PI: Liang Xue Building(s): CR <br /> PI Signature: Room Number(s): 111 &233 <br /> Revision/Review Date: 5/10/2020 Designated Work Area:Research Laboratory) <br /> Departmental Approval? Yes ❑ No ❑ Departmental Signature: <br /> EMS Approval? Yes ❑ No ❑ I EMS Signature: <br /> Instructions for each section of this form are available and should be referenced as you complete this SOP form. If an <br /> experimental protocol has been written and incorporates all of the relevant safety information required in this form, it <br /> can be used(only with Department and EMS approvals) in lieu of this template. <br /> Summary(Overview): <br /> The procedure describes the neutralization of aqueous acid/base-waste in the lab. Researchers will be able to <br /> apply the procedure to safely dispose of neutral aqueous solutions. <br /> 1. Hazard Identification <br /> a. Preparation and Use: <br /> Procedures used: Benchtop(diluted acid/base solutions) or fume hood(concentrated acidibase solutions). <br /> The procedure will be applied to waste as it accumulates in the laboratory because of routine daily research <br /> activities. <br /> Note:If identified as a process,provide additional detailed procedural steps for the use of each hazardous chemical in Section 5,below. <br /> b. Chemical Hazards and Risk: <br /> Acid/Base waste is corrosive and can have severe and potentially O O ��� <br /> fatal effects for individuals exposed to it. Environmental hazard is <br /> high as well especially if the neutralization waste contains heavy ❑ ❑x ❑x ❑ <br /> metal salts. Flammable Toxic Corrosive Oxidizer <br /> SDSs for common acids and bases used in the lab are available OI> 4> <br /> below: <br /> Hydrochloric acid (HCI) ❑ <br /> https://fscimaize.fishersci.com/msds/11155.htm Explosive Environmental Harmful Chronic <br /> Sodium hydroxide (NaOH) <br /> hLtps:Hfscimage.fishersci.com/msds/21300.htm <br /> Sulfuric acid(H2SO4) <br /> htq2s://fscimace.fishersci.com/msds/22350.htm <br /> c. Equipment Hazards and Risk: <br /> N/A <br /> 2. Hazard Control <br /> a. Chemical Selection and Purchasing: <br /> Chemical usage and purchasing shall be planned such that: <br /> • The safest chemical to accomplish the job shall be chosen <br /> • Open bottles and those closest to expiration shall be chosen over opening new bottles <br /> • The surplus inventory will be checked before making any purchases <br />