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Sodium polytungstate hydrate, 250 g

≥99,9 %
Examples of effect: Damage metals and burn body tissues; may cause serious eye damage. Safety: Avoid contact; wear safety spectacles and gloves. In the event of contact with eyes and skin, rinse with water.
Examples of effect: Lead to damage to heath, cause irritation to eyes, skin or respiratory organs. Are fatal in larger quantities. Safety: As previously stated, in the event of skin irritation or contact with eyes, rinse with water or a suitable medium.
Danger
H302-H318-H412
i harmful if swallowed, causes serious eye damage, harmful to aquatic life with long lasting effects
P273 P280 P305+P351+P338 P310
i avoid release to the environment, wear protective gloves/eye protection, IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing, immediately call a POISON CENTER/doctor
Pack Qty.
Pack.
Sodium metatungstate
Empirical formula 3 Na2WO4 · 9 WO3 · H2O
Molar mass (M) 2986,01 g/mol
Density (D) 5,47 g/cm³
WGK 2
CAS No. [12141-67-2]
EG-Nr. 412-770-9

For the preparation of heavy liquid.

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.
Product details

€190.85/Pack Qty. 

excl. VAT. | 250 g per Pack Qty.

Art. No. 8828.2

Available at short notice
from 6 Pack Qty. €181.31/Pack Qty.
from 24 Pack Qty. €171.76/Pack Qty.
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Product details


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

Manufacture of aqueous sodium polytungstate solutions with the following densities and consequent viscosities at 25 °C

Mass of SPT used [g] Masse of H2O [g] End volume of solution [ml] Concentration c in [Gew.-%] Density p [g/cm3] Viskosität 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


Sodium polytungstate hydrate ≥99,9 %

Sodium polytungstate hydrate
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Order No. Pack Qty. Pack. Price Quantity
8828.1 50 g plastic €52.15
8828.2 250 g plastic €190.85
8828.3 1 kg plastic €671.90
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Downloads / MSDS


General information

Density determination

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 adjustable
  • 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 cleaning of the sinking and floating material with water
  • Environmentally friendly
Manufacture of aqueous sodium polytungstate solutions with the following densities and consequent viscosities at 25 °C


Certificates of Analysis

You can search for and download your certificate of analysis for the selected product here. Please provide your batch number.
The following analysis certificates have been found:

Type analysis

Assay≥99,9 %
Assay (WO3)≥85 %
Tubidity (density 2,80 g/ml)<10 NTU
Max. attainable density (25 °C)<3,1 g/ml

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