grade
certified reference material
agency
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)
reaction suitability
reaction type: water standard for Karl Fischer titration
packaging
ampule of 10 × 8 mL
technique(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
format
single component solution
Quality Level
General description
请浏览ISO证书和现场质量自评 以查看当前的鉴定证书。
在http://www.sigma-aldrich.com下载证书以查看认证值，包括不确定性和失效日期。
Application
- 作为有证标准物质(CRM)，根据ISO 9001 7.1.5《监视与量测资源》要求，验证卡尔费休库仑法滴定仪的准确度。
- 按照欧洲药典2.5.32《水分微量测定法》标准，检查测定结果的准确度。
- 根据欧洲药典第2.5.12章《水分半微量测定法》、美国药典 <921> 《水分测定法》要求，标准化滴定剂。
- 采用单组分和双组分试剂的容量滴定
Features and Benefits
- 方便的8 mL玻璃安瓿包装，每盒含10支一次性安瓿瓶
- 提供批次特定的分析证书(CoA)，附有准确测定的批次含水量数据、不确定性、分析方法、NIST批次和最短保质期
- 经ISO/IEC 17025和ISO 17034认证校准实验室检测和验证
- 可直接溯源至SI单位(kg)，并经NIST SRM 2890验证
Packaging
Analysis Note
Legal Information
signalword
Warning
hcodes
Hazard Classifications
Flam. Liq. 3 - STOT SE 3
target_organs
Central nervous system
存储类别
3 - Flammable liquids
wgk
WGK 1
flash_point_f
87.8 °F - Information refers to the main ingredient.
flash_point_c
31 °C - Information refers to the main ingredient.
法规信息
商品
Methods including internal extraction, external extraction, and Karl Fischer oven ensure accurate water content determination by titration.
SmartChemicals enable wireless CoA data transfer, reducing human error in titration experiments.
实验方案
This protocol describes a one-component Volumetric Karl Fischer Titration method for the determination of water content in Benserazide hydrochloride.
Foodstuffs often provide a challenge for the water determination by Karl-Fischer. Instant Coffee is such a sample matrix and its water content has influence on quality and shelf life.
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