Certificate of Analysis
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Product Name:
Alginic Acid Sodium Salt from Brown Algae (Medium Molecular Weight)
CAS Number: 9005-38-3
MDL Number: MFCD00081310
| Test | Specification | Result |
|---|---|---|
| Appearance (Color) | Powder | Powder |
| Solubility (Color) | Faint Yellow | Faint Yellow |
| Loss on Drying | <15.5 % | 0.42 % |
| Total Ash | 18-27 % | 7 % |
| Viscosity* | 100-200 cps | 200 cps (in 25-100 rpm) |
| 1% w/v in water at 25 ºC |
(Low molecular weight)
200-500 cps
(Medium molecular weight)
|
|
| Molecular Weight** | - | 251 kD |
| Arsenic (As)*** | < 3 ppm | 0.76 ppm |
| Cadmium (Cd)*** | < 1 ppm | < 0.1 ppm |
| Mercury (Hg)*** | < 1 ppm | 0.86 ppm |
| Lead (Pb)*** | < 10 ppm | 1.6 ppm |
* Measured by Brookfield Rotary Viscometer
** Measured by Ubbelohde viscometer
*** Measured by ICP-MS technique