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Chemwatch:4650-14 Page 5 of 14 Issue Date:11/12/2018 Version No:8.1.1.1 API Pond Freshwater Nitrite Test Solution Print Date:06/21/2019 US OSHA Permissible Exposure Levels(PELs)- hydrochloric Hydrogen chloride Not Not 5 ppm/7 Not acid Available Available mg/m3 Available Table Z1 I EMERGENCY LIMITS Ingredient Material name TEEL-1 TEEL-2 TEEL-3 polyethylene glycol Polyethylene glycol 30 mg/m3 1,300 mg/m3 7,700 mg/m3 MURIATIC ACID CONCENTRATE Hydrogen chloride;(Hydrochloric acid) Not Available Not Available Not Available MURIATIC ACID Deuterochloric acid;(Deuterium chloride) 1.8 ppm 22 ppm 100 ppm CONCENTRATE Ingredient Original IDLH Revised IDLH polyethylene glycol Not Available Not Available MURIATIC ACID CONCENTRATE 50 ppm Not Available MATERIAL DATA Exposed individuals are NOT reasonably expected to be warned,by smell,that the Exposure Standard is being exceeded. Odour Safety Factor(OSF)is determined to fall into either Class C,D or E. The Odour Safety Factor(OSF)is defined as: OSF=Exposure Standard(TWA)ppm/Odour Threshold Value(OTV)ppm Classification into classes follows: ClassOSF Description A 550 Over 90%of exposed individuals are aware by smell that the Exposure Standard(TLV-TWA for example)is being reached,even when distracted by working activities B 26-550As"A"for 50-90%of persons being distracted C 1-26 As"A"for less than 50%of persons being distracted D 0.18-1 10-50%of persons aware of being tested perceive by smell that the Exposure Standard is being reached E <0.18 As"D"for less than 10%of persons aware of being tested Odour Safety Factor(OSF)OSF=1.3(hydrochloric acid) Exposure controls Engineering controls are used to remove a hazard or place a barrier between the worker and the hazard.Well-designed engineering controls can be highly effective in protecting workers and will typically be independent of worker interactions to provide this high level of protection. The basic types of engineering controls are: Process controls which involve changing the way a job activity or process is done to reduce the risk. Enclosure and/or isolation of emission source which keeps a selected hazard"physically"away from the worker and ventilation that strategically"adds"and"removes"air in the work environment.Ventilation can remove or dilute an air contaminant if designed properly.The design of a ventilation system must match the particular process and chemical or contaminant in use. Employers may need to use multiple types of controls to prevent employee overexposure. General exhaust is adequate under normal operating conditions. If risk of overexposure exists,wear SAA approved respirator.Correct fit is essential to obtain adequate protection.Provide adequate ventilation in warehouse or closed storage areas.Air contaminants generated in the workplace possess varying"escape"velocities which,in turn,determine Appropriate engineering the"capture velocities"of fresh circulating air required to effectively remove the contaminant. controls Type of Contaminant: Air Speed: solvent,vapours,degreasing etc.,evaporating from tank(in still air) 0.25-0.5 m/s (50-100 f/min) aerosols,fumes from pouring operations,intermittent container filling,low speed conveyer 0.5-1 m/s transfers,welding,spray drift,plating acid fumes, pickling(released at low velocity into zone of active generation) (100-200 f/min.) direct spray,spray painting in shallow booths,drum filling,conveyer loading,crusher dusts,gas 1-2.5 m/s discharge(active generation into zone of rapid air motion) (200-500 f/min) grinding,abrasive blasting,tumbling,high speed wheel generated dusts(released at high initial 2.5-10 m/s velocity into zone of very high rapid air motion). (500-2000 f/min.) Within each range the appropriate value depends on: Continued...