Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Information
Name: L(+)-Rhamnose Monohydrate
Alias: 6-Deoxy-L-mannose monohydrate
CAS No.: 10030-85-0
Molecular Formula: C6H12O5·H2O
Molecular Weight: 182.17
2. Physical and Chemical Properties
Physical Properties
- Appearance: White crystalline powder or colorless needle crystals
- Odor: Odorless, mild sweet taste
- Solubility: Freely soluble in water; soluble in methanol; slightly soluble in ethanol; insoluble in acetone, ether and alkanes
- Melting Point: 90–92 °C (loses crystal water)
- Specific Rotation: [α]D2? +8.0° ~ +10.0° (aqueous solution)
- Hygroscopicity: Slightly hygroscopic under high humidity conditions
- Crystal feature: Loses bound water when heated above 100 °C to form anhydrous L-rhamnose
Chemical Properties
- Molecular structure: Natural deoxyhexose monosaccharide with one methyl group replacing the primary hydroxyl of mannose
- Reducing sugar characteristic: Contains free aldehyde group, reduces Fehling’s reagent and generates brick-red precipitate upon heating
- Maillard reaction: Reacts with amino acids under heating to produce brown flavor substances
- Thermal stability: Stable below 80 °C; dehydration and caramelization occur at high temperature
- Hydrolysis resistance: Stable under neutral and weak acid conditions; resistant to mild hydrolysis
- Compatibility: Compatible with most food, cosmetic and biological raw materials; incompatible with strong alkali and concentrated oxidants
3. Main Application Fields
1. Biochemical Research Standard (Core Application)
- Reference standard for monosaccharide composition analysis of plant polysaccharides, gums and microbial cell wall
- Chromatographic calibration standard for HPLC and GC sugar detection
2. Flavor & Food Industry Raw Material
- Precursor for natural meat and caramel flavor via Maillard reaction
- Low-calorie sweetener additive for functional food
3. Cosmetic Active Raw Material
Moisturizing, anti-irritation and anti-aging auxiliary for skin care formulations; repairs skin barrier
4. Pharmaceutical & Microbial Culture Medium
Carbon source additive for microbial strain culture; intermediate for synthetic carbohydrate drugs
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 10030-85-0 |
| Molecular Formula | C6H12O5·H2O |
| Molecular Weight | 182.17 |
| Appearance | White crystalline powder |
| HPLC Purity | Biochemical Grade ≥99.0%; Reference Standard ≥99.5% |
| Water of Crystallization | Qualified conforming to monohydrate standard |
| Loss on Drying | ≤10.0% |
| Residue on Ignition | ≤0.10% |
| Heavy Metals (Pb) | ≤10 ppm |
| Arsenic (As) | ≤2 ppm |
| Packaging | Nitrogen-filled aluminum foil vacuum bag / 25kg PE-lined fiber drum |
| Storage Condition | Hermetic dry warehouse below 25 °C; avoid high temperature and humid environment |
| Transportation Requirement | Natural monosaccharide solid, moisture-proof sealed packaging |
| Shelf Life | 36 months under intact sealed packaging |
Safety Warning
Low toxicity, edible safe within regular dosage. Dust may cause mild irritation to respiratory tract and eyes during operation; wear dust mask and protective gloves in ventilated space. Avoid long-term heating with alkaline substances to prevent caramelization and discoloration.
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