1.12939
Lactose Standard 5 %
Certified Reference Material for Karl Fischer Titration Aquastar®
別名:
Lactose Standard 5 %, Milk sugar, Lactobiose
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この商品について
実験式（ヒル表記法）:
C12H22O11 · xH2O
CAS番号:
分子量:
342.30 (anhydrous basis)
MDL number:
UNSPSC Code:
41116107
EC Index Number:
200-559-2
NACRES:
NA.24
grade
certified reference material
Quality Segment
agency
ISO 17025, 17034
product line
Aquastar®
form
solid
autoignition temp.
390 °C
potency
>10000 mg/kg LD50, oral (Rat)
reaction suitability
reaction type: water standard for Karl Fischer titration
packaging
ampule of 10 g
technique(s)
Karl-Fischer titration: suitable, titration: suitable
pH
4.0-6.5 (20 °C, 100 g/L in H2O)
mp
202 °C
bulk density
500 kg/m3
format
neat
storage temp.
15-25°C
SMILES string
O1[C@H]([C@@H]([C@H]([C@H]([C@H]1CO)O)O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO
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
General description
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.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
In our effort to be more sustainable, we′re going digital with COAs-download them directly from our website. Download your certificate at https://www.sigmaaldrich.com/US/en/documents-search to view certified values, including uncertainty and expiry date.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
In our effort to be more sustainable, we′re going digital with COAs-download them directly from our website. Download your certificate at https://www.sigmaaldrich.com/US/en/documents-search to view certified values, including uncertainty and expiry date.
Application
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.
Features and Benefits
- 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 digital certificate of analysis (CoA) for an effective quality management system
- Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
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
Water content: 5.00 - 5.20 %
Measurement method: coulometric according Karl Fischer
extended measuring uncertainly: +/- 0.05 %
Measurement method: coulometric according Karl Fischer
extended measuring uncertainly: +/- 0.05 %
Other Notes
Replaces: 1.12939.0010
Legal Information
AQUASTAR is a registered trademark of Merck KGaA, Darmstadt, Germany
保管分類
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
試験成績書（COA）
製品のロット番号・バッチ番号を入力して、試験成績書（COA） を検索できます。ロット番号・バッチ番号は、製品ラベルに「Lot」または「Batch」に続いて記載されています。