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Chemwatch:4650.13 Page 7 of 18 Issue Date:11/12/2018 Version No:7.1.1.1 API Pond Ammonia Test Solution#1 Print Date:06121/2019 US OSHA Permissible sodium Not Not Exposure Levels(PELs)- Cyanides(as CN) 5 mg/m3 (4)Varies with compound. Table Z1 nitroprusside Available Available 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 SOD NITROPRUSSIDE SOLUTION Sodium nitroferricyanide 0.21 mg/m3 2.3 mg/m3 14 mg/m3 SODIUM SALICYLATE-USP Sodium salicylate;(Salicylic acid,sodium salt) 7.1 mg/m3 78 mg/m3 470 mg/m3 Ingredient Original IDLH Revised IDLH polyethylene glycol Not Available Not Available SOD NITROPRUSSIDE 25 mg/m3 Not Available SOLUTION SODIUM SALICYLATE-USP Not Available Not Available I MATERIAL DATA Exposure controls Enclosed local exhaust ventilation is required at points of dust,fume or vapour generation. HEPA terminated local exhaust ventilation should be considered at point of generation of dust,fumes or vapours. Barrier protection or laminar flow cabinets should be considered for laboratory scale handling. A fume hood or vented balance enclosure is recommended for weighing/transferring quantities exceeding 500 mg. When handling quantities up to 500 gram in either a standard laboratory with general dilution ventilation(e.g.6-12 air changes per hour)is preferred.Quantities up to 1 kilogram may require a designated laboratory using fume hood, biological safety cabinet,or approved vented enclosures.Quantities exceeding 1 kilogram should be handled in a designated laboratory or containment laboratory using appropriate barrier/containment technology. Manufacturing and pilot plant operations require barrier/containment and direct coupling technologies. Barrier/containment technology and direct coupling(totally enclosed processes that create a barrier between the equipment and the room)typically use double or split butterfly valves and hybrid unidirectional airflow/local exhaust ventilation solutions(e.g.powder containment booths).Glove bags,isolator glove box systems are optional.HEPA filtration of exhaust from dry product handling areas is required. Fume-hoods and other open-face containment devices are acceptable when face velocities of at least 1 m/s(200 feet/minute)are achieved.Partitions,barriers,and other partial containment technologies are required to prevent migration Appropriate engineering of the material to uncontrolled areas.For non-routine emergencies maximum local and general exhaust are necessary.Air controls contaminants generated in the workplace possess varying"escape"velocities which,in turn,determine the"capture velocities"of fresh circulating air required to effectively remove the contaminant. Type of Contaminant: Air Speed: solvent,vapours,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(100-200 transfers(released at low velocity into zone of active generation) f/min.) direct spray,drum filling,conveyer loading,crusher dusts,gas discharge(active generation into 1-2.5 m/s(200-500 zone of rapid air motion) f/min.) Within each range the appropriate value depends on: Lower end of the range Upper end of the range 1:Room air currents minimal or favourable to capture 1:Disturbing room air currents 2:Contaminants of low toxicity or of nuisance value only. 2:Contaminants of high toxicity 3:Intermittent,low production. 3:High production,heavy use 4:Large hood or large air mass in motion 4:Small hood-local control only Simple theory shows that air velocity falls rapidly with distance away from the opening of a simple extraction pipe. Continued...