Description
Sodium polytungstate hydrate, min. 99,9 %, Molar mass (M) 2986,01 g/mol, Density (D) 5,47 g/cm³, CAS No. 12141-67-2, EC No. 412-770-9, Empirical formula 3 Na2WO4 · 9 WO3 · H2O
Sodium polytungstate (SPT) is perfect for preparation of heavy liquids. Carl ROTH offers an environmentally friendly alternative to using zinc chloride and mercury saline solutions or highly toxic halogenated hydrocarbons to conduct the sink or swim analyses required for density determination.
Properties:
- Highly water soluble
- pH-neutral solution
- Maximum achievable density of the solution is 3,1 g/cm³ at 25 °C
Advantages:
- Non-toxic
- Non-flammable
- Odourless
- Low viscosity
- Easy to use
- Extremely easy to clean the sinks and floats with water
- Environmentally friendly
| Mass of SPT used [g] | Mass of H2O [g] | End volume of solution [ml] | Concentration c in [wt.-%] | Density p [g/cm3] | Viscosity η [mPa•s] |
| 5,00 | 48,80 | 50 | 9,3 | 1,08 | 0,99 |
| 10,00 | 47,66 | 50 | 17,3 | 1,15 | 1,05 |
| 15,08 | 46,63 | 50 | 24,4 | 1,23 | 1,13 |
| 20,00 | 45,87 | 50 | 30,4 | 1,32 | 1,19 |
| 25,02 | 44,98 | 50 | 35,7 | 1,40 | 1,29 |
| 35,01 | 42,94 | 50 | 44,9 | 1,56 | 1,51 |
| 45,15 | 41,10 | 50 | 52,3 | 1,73 | 1,83 |
| 55,01 | 38,93 | 50 | 58,6 | 1,88 | 2,27 |
| 65,17 | 36,99 | 50 | 63,8 | 2,04 | 2,90 |
| 75,00 | 34,68 | 50 | 68,4 | 2,19 | 3,93 |
| 85,00 | 32,54 | 50 | 72,3 | 2,35 | 5,15 |
| 95,00 | 30,10 | 50 | 75,9 | 2,50 | 8,19 |
| 105,01 | 28,42 | 50 | 78,7 | 2,67 | 12,18 |
| 115,01 | 25,92 | 50 | 81,6 | 2,82 | 20,55 |
| 125,12 | 23,72 | 50 | 84,1 | 2,98 | 36,65 |
| 133,00 | 22,00 | 50 | 85,8 | 3,10 | 59,52 |
Technical Information
| ROTH for Future | yes |
Compliance & Safety Information
Danger
Hazard Statements (H-Phrases)
H302
Harmful if swallowed
H318
Causes serious eye damage
H412
Harmful to aquatic life with long lasting effects
Precautionary Statements (P-Phrases)
P273
P273 – No description available
P280
Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310
Immediately call a POISON CENTER/doctor.