1.88051

Water standard 0.1%

Standard for coulometric Karl Fischer Titration 1 g ≙ 1 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 (Information refers to the main component.)
• expl. lim.: 1.7-11.5 % (v/v) Information refers to the main component.)
• application(s): Karl-Fischer titration: suitable; titration: suitable
• bp: 119 °C/1013 hPa
• 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

The 0.1% water standard is prepared gravimetrically from high-purity water and 1-methoxy-2-propanol. Its characterization is performed 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 following ISO 760.

Application

It is used as a certified reference material (CRM) to verify the accuracy of coulometric Karl Fischer titrators according to ISO 9001 chapter 7.1.5 “Monitoring and measuring resources”. It can also be used to check the accuracy of measured results according to European Pharmacopeia (Ph.Eur.) chapter 2.5.32 “Water Micro Determination.” Although preferable for use in coulometric method, it can be used to verify the low water content by volumetric method.

Features and Benefits

• Packed in convenient 8 mL glass ampoules with 10 single-use ampoules in a box
• Supplied with a batch-specific certificate of analysis (CoA) having data on 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 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): 0.970 - 1.030 mg/g

Legal Information

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

Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Warning
• Hazard Statements: H226 - H336
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P243
• hazcat: Flam. Liq. 3 - STOT SE 3
• Target Organs: Central nervous system
• storage_class_code: 3 - Flammable liquids
• WGK Germany: WGK 1
• Flash Point(F): 87.8 °F - Information refers to the main component.
• Flash Point(C): 31 °C - Information refers to the main component.