Manufacturer of sodium polytungstate (SPT) – environmentally friendly heavy solutions for density separation of solids.
TC Tungsten Compounds GmbH
Grub am Forst (Zeickhorn) · GermanyNew on Amplifa
About TC Tungsten Compounds
TC Tungsten Compounds GmbH is a family-owned specialty chemicals manufacturer based in the Zeickhorn district of Grub (Grub am Forst, Upper Franconia). For around 25 years, the company has been developing and producing sodium polytungstate (SPT, also sodium metatungstate), an aqueous, non-toxic heavy liquid for sink-float analysis and density separation of solids. The portfolio includes powders, granules and ready-to-use solutions (SPT-0 to SPT-5, LVP-1, LVP-3, AMT-3) with densities up to 3.0 g/cm³ as well as a tungsten carbide suspension (SPT-4) up to 4.6 g/cm³. As a former patent holder, the company also offers reprocessing and free recycling of used SPT solutions. Around 900 customers in more than 95 countries are supplied, including universities and research institutions as well as the glass, plastics, recycling, coal and mining industries. Since 2024 the company has been certified to ISO 9001:2015.
- Site
- Grub am Forst
- Processes
- Production of sodium polytungstate (SPT-0, SPT-0L, SPT-1, SPT-2, SPT-3, SPT-4, SPT-5, SPT-3R,, Sink-float analysis / density separation of solids using aqueous sodium polytungstate solution, Reprocessing and recycling of used/contaminated sodium polytungstate solutions, Production of other tungsten chemicals (among others, ammonium paratungstate mentioned as an
- Materials
- Sodium polytungstate (sodium metatungstate, SPT), Na6[H2W12O40], Tungsten carbide (component of the SPT-4 suspension), Tungsten (metal, base material of the product range), Low Viscosity Polytungstate (LVP), Sodium polytungstate (Na6[H2W12O40]), Sodium polytungstate/tungsten carbide suspension, Low Viscosity Polytungstate (LVP-1, LVP-3), Ammonium paratungstate solution
- Certificates
- ISO 9001:2015
- Industries
- Glass industry, Plastics industry, Recycling, Coal industry, Mining, Geology and mineralogy
- 01
Development of the tungsten compounds
- 02
Production of the SPT products (powder, granules, solutions)
- 03
Quality inspection (density tolerance)
- 04
Sales and worldwide shipping
- 05
Take-back and recycling of used solutions
Products & Material Forms
Sodium polytungstate (Na6[H2W12O40])
Water-soluble, non-toxic salt for the production of heavy solutions with densities up to 3.1 g/cm³.
Sodium polytungstate/tungsten carbide suspension
Black suspension with densities of 3.2 to 4.6 g/cm³ for separations above 3.0 g/cm³.
Low Viscosity Polytungstate (LVP-1, LVP-3)
Low-viscosity polytungstates for separations in the fine-grain range.
Ammonium paratungstate solution
Further tungsten chemical produced in-house.
Location
Grub am Forst (Zeickhorn)
DEProduction, development and sales
- Lot size
- from 1 kg / 1 L, no minimum order quantity
- Materials
- Sodium polytungstate, tungsten carbide, ammonium paratungstate
- Production facility in the newly constructed office and production building (occupied in 2016)
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Production of sodium polytungstate (SPT-0, SPT-0L, SPT-1, SPT-2, SPT-3, SPT-4, SPT-5, SPT-3R,Chemicals/Engineering | Density tolerance ±0.02 g/cm³ (SPT-4: ±0.05 g/cm³) | – | no minimum order quantity (1 kg or 1 | 1 kg / 1 L | Sodium polytungstate, Tungsten carbide |
| Sink-float analysis / density separation of solids using aqueous sodium polytungstate solutionTesting | – | – | – | – | Sodium polytungstate solution, Tungsten carbide suspension |
| Reprocessing and recycling of used/contaminated sodium polytungstate solutionsChemicals/Engineering | Density ±0.02 g/cm³ | – | – | – | Sodium polytungstate |
| Production of other tungsten chemicals (among others, ammonium paratungstate mentioned as anChemicals/Engineering | – | – | – | – | Tungsten |
Quality
The company is certified to ISO 9001:2015 for the development, manufacture and distribution of fine chemicals. The density of the solutions is adjusted with tolerances of ±0.02 g/cm³ (SPT-4: ±0.05 g/cm³).
| Evidence | Grub am Forst (Zeickhorn) |
|---|---|
| ISO 9001:2015 |
Company History
- 1985
Dr. Rainer Kamps founds the company as a sideline business alongside his work at Siemens.
- 2015
Dr. Sebastian Kamps founds TC Tungsten Compounds GmbH.
- 2016
Move into the company's own production facility in the Zeickhorn district of Grub.
- 2024
ISO-9001:2015 certification (valid from 11.12.2024 to 11.12.2025).