1.09058.1000 HYDROCHROLIC ACID MERCK

Description Catalogue Number 109058 Synonyms Hydrogen chloride solution Product Information Grade Reag. USP HS Code 2806 10 00 Quality Level MQ200 Physicochemical Information Density 1.01 g/cm3 (20 °C) pH value <1 (H₂O, 20 °C) Safety Information according to GHS Hazard Pictogram(s) Hazard Pictogram(s) Hazard Statement(s) H290: May be corrosive to metals. Precautionary Statement(s) P234: Keep only in original packaging. P390: Absorb spillage to prevent material damage. Signal Word Warning Storage class 8B Non-combustible, corrosive hazardous materials WGK NWG not water endangering Disposal 28 Aqueous solutions: Container D. Storage and Shipping Information Storage Store at +15°C to +25°C. Transport Information Declaration (railroad and road) ADR, RID UN 1789 , 8, III Declaration (transport by air) IATA-DGR UN 1789 , 8, III Declaration (transport by sea) IMDG-Code UN 1789 , 8, III, Segregation Group: 1 (Acids) Specifications Form liquid Amount-of-substance concentration 0.4975-0.5025 Measurement uncertainty +/- 0.0015 mol/l Traceability NIST SRM Accreditation: This volumetric solution is analyzed by our calibration laboratory D-K-15185-01-00 which is accredited according to DIN EN ISO/IEC 17025 for analysis of amount-of-substance concentrations in volumetric solutions by DAkkS (Deutsche Akkreditierungsstelle - German National Accreditation Body). The accreditation certificate can be found at www.sigmaaldrich.com/ISO17025. The concentration is determined by volumetric titration and refers to 20°C. The amount-of-substance concentration of this volumetric solution is traceable to a primary standard reference material (SRM) from the National Institute of Standards and Technology, Gaithersburg, USA (NIST SRM 723 Tris(hydroxymethyl)aminomethane) by means of volumetric standard Tris(hydroxymethyl)aminomethane (article number 1.02408), certified reference material according to ISO 17034, analyzed by our accredited calibration laboratory of Merck KGaA, Darmstadt, Germany according to DIN EN ISO/IEC 17025. The uncertainty is expressed as expanded measurement uncertainty with a coverage factor k=2 covering a confidence level of 95%. Note: The titer is a correction factor to correct for variations of the volumetric solution, the titration equipment, the temperature and other laboratory conditions. For correct titration results it is recommended to determine a titer with the laboratory specific equipment and under laboratory specific conditions directly after opening a new bottle and at regular time intervals.

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