|Synonyms||Hydrogen chloride solution|
|HS Code||2806 10 00|
|Density||1.03 g/cm3 (20 °C)|
|pH value||<1 (H₂O, 20 °C)|
|Safety Information according to GHS|
|Hazard Statement(s)||H290: May be corrosive to metals.|
|Storage class||10 – 13 Other liquids and solids|
|WGK||WGK 1 slightly hazardous to water|
Inorganic acids and anhydrides thereof should first be diluted or hydrolyzed by stirring carefully into ice water and then neutralized (protective gloves, fume cupboard!) with sodium hydroxide solution (Cat. No. 105587). Before filling into container D, check the pH with pH universal indicator strips (Cat. No. 109535). Fuming sulfuric acid should be carefully stirred dropwise into 40 % sulfuric acid (Cat. No. 109286). Ensure that plenty of ice is available for cooling! When sufficiently cool, treat the highly concentrated sulfuric acid as described above. Analogous to this procedure, other anhydrides can be converted into their corresponding acids. Acid gases (e.g. hydrogen halide, chlorine, phosgene, sulfur dioxide) can be introduced into dilute sodium hydroxide solution and after neutralization disposed of in container D.
|Storage and Shipping Information|
|Storage||Store at +15°C to +25°C.|
|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)|
|Amount-of-substance concentration||1.990 – 2.010|
|Measurement uncertainty||+/- 0.006|
|Accreditation: This volumetric solution is certified according to DIN EN ISO/IEC 17025. Merck KGaA, Darmstadt, Germany is accredited as calibration laboratory D-K-15185-01-00 for amount-of-substance concentrations in volumetric solutions according to DIN EN ISO/IEC 17025 by DAkkS (Deutsche Akkreditierungsstelle). The accreditation certificate can be found at www.sigmaaldrich.com/ISO17025.
The concentration is determined by volumetric titration and refers to 20°C.
The certified value is traceable to a primary standard from the National Institute of Standards and Technology USA (NIST SRM 723
Trishydroxymethylaminomethane) by means of volumetric standard Trishydroxymethylaminomethane (article number 1.02408), certified by the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany according to DIN EN ISO 17025.
The uncertainty is expressed as expanded measurement uncertainty with a coverage factor k=2 covering a confidence level of 95%.
All measurements are carried out in the calibration laboratory D-K-15185-01-00 of Merck KGaA, Darmstadt, Germany.
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.