1.88052

Water standard 1%

Standard for volumetric Karl Fischer Titration 1 g ≙ 10 mg H₂O Aquastar^®

Properties

• storage conditions: no restrictions.
• Quality Level: 300
• Agency/Method: ISO (17025, 17034)
• product line: Aquastar^®
• form: liquid
• autoignition temp.: 287 °C (DIN 51794,Information refers to the main component.)
• expl. lim.: 1.7 % (v/v)
• application(s): Karl-Fischer titration: suitable; titration: suitable
• bp: 119 °C/1013 hPa
• mp: -95 °C
• transition temp: flash point 31 °C (Information refers to the main component.)
• density: 0.92 g/cm³ at 20 °C
• storage temp.: 15-25°C

Description

General description

Water standard 1% is prepared using high-purity water and 1-methoxy-2-propanol by the gravimetric method. Its characterization is carried out at an accredited quality control (QC) laboratory according to DIN EN ISO/IEC 17025. The water content of the standard is measured by direct coulometric Karl Fischer titration, in accordance with ISO 760.

Application

Water standard 1% can be used for:

• Evaluating the accuracy of coulometric Karl Fischer titrators according to ISO 9001 chapter 7.1.5 “Monitoring and measuring resources” as a Certified reference material (CRM)
• Checking the accuracy of measured results according to European Pharmacopeia (Ph.Eur.) chapter 2.5.32 “Water Micro Determination”
• Standardizing titrants according to European Pharmacopeia (Ph.Eur.) chapter 2.5.12 “Water Semi-Micro Determination” and the United States Pharmacopeia <921> “Water Determination”
• Titer determinations using volumetric method with one component and two component reagents

Features and Benefits

• Packed in convenient 8 mL glass ampoules and 10 single-use ampoules in a box
• Supplied with a batch-specific certificate of analysis (CoA) having data on the exact measured water content of the batch, uncertainty, method of analysis, the NIST batch, and minimum shelf life
• Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited calibration laboratory
• Directly traceable to SI unit (kg) and verified by SRM 2890 from NIST

Packaging

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Analysis Note

Assay (H₂O): 9.90 - 10.10 mg/g

Legal Information

AQUASTAR is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS02,GHS07,GHS02,GHS07
• Signal Word: Warning-Warning
• Hazard Statements: H226 - H336 - H226 - H336
• Precautionary Statements: P210 - P210 - P370 + P378
• Target Organs: Central nervous system
• WGK Germany: WGK 1
• Flash Point(F): 87.8 °F - closed cup
• Flash Point(C): 31 °C - closed cup