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Lactose Standard 5 %
| 产品编号： | 4061079 |
| 规格： | solid water standard for coulometric/volumetric Karl Fischer Titration and Karl Fischer oven method Aquastar® |
| CAS NO： | 10039-26-6 |
| 包装规格： | 10 G |
| 产品类别： | 进口试剂 |
| 品牌： | Supelco |
| 优惠价： | 立即咨询 |
产品价格查看更多规格...
| 产品编号 | 包装单位 | 单价(元) | 国内现货 | 国外库存 | 询价单 |
| 4061079 | 10 G | 2170 |
产品别名
10039-26-6
Lactose Standard 5 %
Milk sugar, Lactobiose
基本信息
| Empirical Formula【经验(实验)分子式】 | C12H22O11 · xH2O |
| Molecular weight | 342.30 (anhydrous basis) |
| EC Index Number【EC索引号】 | 200-559-2 |
| General description【一般描述】 | The lactose standard 5% is solid standard, prepared gravimetrically from high-purity reagents. It is analyzed in an ISO/IEC 17025 and ISO guide 34 accredited calibration laboratory. Its water content of 5% is measured by the coulometric Karl Fischer oven method at 150℃ with an extraction time of 300 seconds, in accordance with ISO 760. |
| Application【应用】 | 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℃ -190℃. |
| Features and Benefits【特点和优势】 |
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| Linkage【联系】 | Replaces: 1.12939.0010 |
| Analysis Note【分析说明】 | Water content: 5.00 - 5.20 % Measurement method: coulometric according Karl Fischer extended measuring uncertainly: +/- 0.05 % |
| Legal Information【法律信息】 | AQUASTAR is a registered trademark of Merck KGaA, Darmstadt, Germany |
产品性质
| Quality Level【质量水平】 | 300 |
| agency | ISO 17025, 17034 |
| product line【产品线】 | Aquastar® |
| form【形式】 | solid |
| autoignition temp.【自燃温度】 | 390 ℃ |
| potency【效能】 | >10000 mg/kg LD50, oral (Rat) |
| technique(s) | Karl-Fischer titration: suitable titration: suitable |
| pH【pH值(酸碱度)】 | 4.0-6.5 (20 ℃, 100 g/L in H2O) |
| mp | 202 ℃ |
| bulk density【堆积密度】 | 500 kg/m3 |
| format【格式】 | neat |
| storage temp.【储存温度】 | 15-25℃ |
| packaging【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 |
安全信息
| Storage Class Code【储存分类代码】 | 11 - Combustible Solids |
| WGK | WGK 2 |
