1.12939

Lactose Standard 5 %

Certified Reference Material for Karl Fischer Titration Aquastar^®

• 別名: Lactose Standard 5 %, Milk sugar, Lactobiose
• 実験式（ヒル表記法）: C₁₂H₂₂O₁₁ · xH₂O
• CAS番号: 10039-26-6
• 分子量: 342.30 (anhydrous basis)
• UNSPSCコード: 41116107
• EC Index Number: 200-559-2
• NACRES: NA.24

特性

• グレード: certified reference material
• 品質水準: 300
• 認証: ISO 17025, 17034
• 製品種目: Aquastar^®
• 形状: solid
• 自己発火温度: 390 °C
• 有効性: >10000 mg/kg LD₅₀, oral (Rat)
• テクニック: Karl-Fischer titration: suitable; titration: suitable
• pH: 4.0-6.5 (20 °C, 100 g/L in H₂O)
• mp: 202 °C
• かさ密度: 500 kg/m³
• フォーマット: neat
• 保管温度: 15-25°C
• InChI: 1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11+,12+/m1/s1
• InChI Key: GUBGYTABKSRVRQ-XLOQQCSPSA-N

詳細

詳細

The lactose standard 5% is a solid standard, prepared gravimetrically from high-purity reagents. It is analyzed in an ISO/IEC 17025 and ISO 17034 accredited calibration laboratory. Its water content of 5% is measured by the coulometric Karl Fischer oven method at 150°C with an extraction time of 300 seconds, in accordance with ISO 760.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

アプリケーション

Lactose standard 5% is used as a certified reference material (CRM) for both the coulometric and volumetric Karl Fischer water determinations, with or without the Karl Fischer oven. It is particularly suitable when the working medium used consists of solvents mixtures in which sodium tartrate dihydrate is slightly soluble. And it is used as an oven standard in the preferred temperature range of 140°C -190°C.

特徴および利点

• Available in a secure plastic bottle with the material subjected to stability and homogeneity studies, following ISO 17034 and ISO Guide 35
• High-quality offering accurate and reliable results
• Accompanied with a comprehensive and batch-specific certificate of analysis (CoA) for an effective quality management system
• Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory

包装

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.

関連事項

Replaces: 1.12939.0010

アナリシスノート

Water content: 5.00 - 5.20 %
Measurement method: coulometric according Karl Fischer
extended measuring uncertainly: +/- 0.05 %

法的情報

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

安全性情報

• 保管分類コード: 11 - Combustible Solids
• WGK: WGK 2
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable