CAS No.: | 9067-32-7 |
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Formula: | C14h22nnao11 |
EINECS: | 232-678-0 |
Packaging Material: | Paper |
Storage Method: | Normal |
Shelf Life: | >12 Months |
Samples: |
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Customization: |
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alpha | D25 -74° (c = 0.25 in water): Rapport et al., J. Am. Chem. Soc. 73, 2416 (1951) |
storage temp. | -20°C |
solubility | H2O: 5 mg/mL, clear, colorless |
form | Powder |
color | White to cream |
PH | pH(2g/l,25ºC) : 5.5~7.5 |
Items | Specifications |
Appearance | White to pale yellow powder or granule |
Identification A. Infrared absorption B. Reaction of sodium |
Complies with the Ph.Eur. reference spectrum of Sodium Hyaluronate Positive |
H | 6.0 ~ 8.0 (0. 1% solution) |
Light transmittance | ≥ 99.0% (0.5% solution) |
Intrinsic viscosity | 1.72 m3/kg ~ 2.90 m3/kg |
Molecular Weight | 1.0 x 106 Da ~ 1.8 x 106 Da |
Protein | The absorbance is NMT 0.5 at 280 nm |
≤ 0.3% (on the dried substance) | |
Loss on drying | ≤ 10.0% |
Ash | ≤ 13.0% |
Residue on ignition | ≤ 20.0% (on the dried substance) |
Heavy metals | ≤ 20 ppm |
Arsenic | ≤ 2 ppm |
Assay | ≥ 95.0% (on the dried substance) |
Total aerobic microbial count | ≤100 cfu/g |
Total combined yeasts/mould count | ≤ 10 cfu/g |
Escherichia Coli | Absent/g |
Salmonella | Absent/10 g |
Staphylococcus aureus | Absent/g |
Pseudomonas aeruginosa | Absent/g |
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