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VWR Lactose monohydrate, AnalaR NORMAPUR® analytical reagent Supplier: VWR Chemicals
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Specifications:
| Application | Organic Synthesis | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | C₁₂H₂₂O₁₁·1H₂O |
VWR Lactose Monohydrate is a high-purity analytical-grade disaccharide supplied under the AnalaR NORMAPUR® brand, ideal for use in chemical analysis, pharmaceutical research, and quality control workflows. This lactose product is monohydrated and supplied in a 500 g plastic bottle, with stringent quality specifications for trace metals, solubility, and optical rotation, ensuring consistent analytical performance.
Commonly known as milk sugar, lactose monohydrate is used in applications such as pharmaceutical formulation, reference material for carbohydrate quantification, and general chemical reagent use, particularly where low impurity levels and batch consistency are essential.
Key Features
✅ AnalaR NORMAPUR® Grade – Trusted for analytical precision and batch consistency
✅ High Purity Standards – Max. 0.1% ignition residue and ≤1 ppm heavy metals (As, Pb, Cu, Fe)
✅ Accurate Optical Rotation – Specific rotation range of +52.0° to +52.8° (10% in water)
✅ Excellent Water Solubility – Insoluble fraction <50 ppm, ideal for aqueous preparations
✅ Stable at Ambient Temperature – Convenient storage and long shelf life
✅ Supplied in Plastic Bottle – Safe handling and storage of solids
Applications
- Analytical Chemistry – Used in standardization of carbohydrate quantification methods
- Pharmaceutical Quality Control – Excipient testing and excipient standardization
- Nutritional Science & Food Chemistry – Reference material in lactose-related assays
- General Laboratory Reagent – Used in titrations, optical rotation measurements, and compound formulation
- Research & Development – Reagent in carbohydrate or disaccharide-related synthesis
Technical Specifications
| Attribute | Specification |
|---|---|
| Product Name | Lactose Monohydrate |
| Grade | AnalaR NORMAPUR® Analytical Reagent |
| Catalog Number | 101394S |
| CAS Number | 10039-26-6 |
| Chemical Formula | C₁₂H₂₂O₁₁·H₂O |
| Molecular Weight | 360.32 g/mol |
| Synonyms | Milk sugar, Lactobiose |
| Storage Temperature | Ambient |
| EINECS Number | 200-559-2 |
| Melting Point | 223 °C |
| Pack Size | 500 g |
| Packaging | Plastic bottle (solid) |
Specification Test Results
| Test | Specification |
|---|---|
| Specific Optical Rotation (10%) | 52.0° – 52.8° |
| Acidity | Max. 0.005 meq/g |
| Ignition Residue (as SO₄) | Max. 0.1% |
| Insolubility in Water | Max. 50 ppm |
| Water Content | 4.8 – 5.4% |
| Arsenic (As) | Max. 1 ppm |
| Copper (Cu) | Max. 0.5 ppm |
| Iron (Fe) | Max. 1 ppm |
| Lead (Pb) | Max. 0.5 ppm |
VWR’s Lactose Monohydrate, AnalaR NORMAPUR®, is a reliable, high-purity disaccharide reagent tailored for laboratories performing pharmaceutical, food, or environmental analyses. With stringent control of impurities and trace metals, this lactose reagent delivers consistent results in titration, formulation, and carbohydrate assays, backed by the quality and traceability expected from the AnalaR NORMAPUR® product line.
- Pack Size: 1kg 500g 5kg