Transcription of ALKALINE DUSTS 7401
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ALKALINE DUSTS 7401
ALKALINE DUSTS 7401. NaOH, KOH, LiOH, MW : (NaOH); CAS: 1310-73-2 RTECS: WB490000. (NaOH). and basic salts (KOH) 1310-58-3 TT2100000 (KOH). (LiOH) 1310-65-2 OJ6307070 (LiOH). METHOD: 7401, Issue 2 EVALUATION: FULL Issue 1: 15 February 1984. Issue 2: 15 August 1994. OSHA : 2 mg/m 3 (NaOH) PROPERTIES: basic, hygroscopic, caustic solids and NIOSH: C 2 mg/m 3/15 min (NaOH); Group I Pesticide aerosols; VP not significant ACGIH: C 2 mg/m 3 (NaOH). SYNONYMS: alkali; caustic soda; lye; sodium hydroxide; potassium hydroxide SAMPLING MEASUREMENT. SAMPLER: FILTER TECHNIQUE: ACID-BASE TITRATION. (1- m PTFE membrane). ANALYTE: OH - (alkalinity). FLOW RATE: 1 to 4 L/min EXTRACTION: mL N HCl, 15 min under VOL-MIN: 70 L @ 2 mg/m 3 nitrogen with stirring -MAX: 1000 L. TITRATION: N NaOH under nitrogen, endpoint SHIPMENT: routine by pH electrode SAMPLE CALIBRATION: N NaOH standardized with STABILITY: at least 7 days @ 25 C [1,2] N HCl BLANKS: 2 to 10 field blanks per set RANGE: to mg (as NaOH) per sample [1].
ALKALINE DUSTS: METHOD 7401, Issue 2, dated 15 August 1994 - Page 3 of 4 d. Remove electrodes, rinse them into the titration vessel, and bubble N
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