Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Manufacture, use & exposure

Uses at industrial sites

Documentsopen allclose all

Uses at industrial sites

Contributing activity / technique for the environment
Environmental release category (ERC):
ERC6b: Use of reactive processing aid at industrial site (no inclusion into or onto article)
Contributing activity / technique for workers
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
PROC 4: Chemical production where opportunity for exposure arises
PROC 8a: Transfer of substance or mixture (charging and discharging) at non-dedicated facilities
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
Subsequent service life relevant for this use:
no

Uses at industrial sites

Contributing activity / technique for the environment
Environmental release category (ERC):
ERC6a: Use of intermediate
Contributing activity / technique for workers
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
PROC 26: Handling of solid inorganic substances at ambient temperature
Subsequent service life relevant for this use:
no

Uses at industrial sites

Contributing activity / technique for the environment
Name of activity / technique:
Use of dihydrogen wolframate to produce catalysts
Environmental release category (ERC):
ERC6a: Use of intermediate
Contributing activity / technique for workersopen allclose all
Process category (PROC):
PROC 1: Chemical production or refinery in closed process without likelihood of exposure or processes with equivalent containment conditions
Process category (PROC):
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Process category (PROC):
PROC 9: Transfer of substance or mixture into small containers (dedicated filling line, including weighing)
Process category (PROC):
PROC 14: Tabletting, compression, extrusion, pelletisation, granulation
Product category used:
PC 19: Intermediate
Sector of end use:
SU 8: Manufacture of bulk, large scale chemicals (including petroleum products)
Substance supplied to that use in form of:
as such
Subsequent service life relevant for this use:
no
Related assessment:
use assessed in a joint CSR

Uses at industrial sites

Contributing activity / technique for the environment
Name of activity / technique:
Use of dihydrogen wolframate in the production of catalysts containing tungsten trioxide
Environmental release category (ERC):
ERC6b: Use of reactive processing aid at industrial site (no inclusion into or onto article)
Contributing activity / technique for workersopen allclose all
Name of activity / technique:
Step 1: Raw material handling
Process category (PROC):
PROC 8a: Transfer of substance or mixture (charging and discharging) at non-dedicated facilities
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 2: Loading the batch furnace
Process category (PROC):
PROC 4: Chemical production where opportunity for exposure arises
Name of activity / technique:
Step 3: Calcination
Process category (PROC):
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
Name of activity / technique:
Step 4: Unloading the furnace and transfer to homogenisation operation
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 5: Homogenisation
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 6: Unloading homogenisation unit and fill into metal containers
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 7: Maintenance and cleaning
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Product category used:
PC 7: Base metals and alloys
Sector of end use:
SU 8: Manufacture of bulk, large scale chemicals (including petroleum products)
SU 9: Manufacture of fine chemicals
SU 14: Manufacture of basic metals, including alloys
SU 15: Manufacture of fabricated metal products, except machinery and equipment
Substance supplied to that use in form of:
as such
Subsequent service life relevant for this use:
no
Related assessment:
use assessed in a joint CSR

Uses at industrial sites

Contributing activity / technique for the environment
Name of activity / technique:
Use of tungstic acid based catalysts
Environmental release category (ERC):
ERC6b: Use of reactive processing aid at industrial site (no inclusion into or onto article)
Contributing activity / technique for workersopen allclose all
Name of activity / technique:
Step 1: Catalyst delivery and handling - The substance is delivered and stored as a solution
Process category (PROC):
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 2: Transfer of liquid raw material into production equipment - The liquid substance is pumped into production equipment
Process category (PROC):
PROC 4: Chemical production where opportunity for exposure arises
Name of activity / technique:
Step 3: Precipitation, Impregnation, Filtration, Drying and Mixing - The substance is used to prepare a supported catalyst system using classical catalyst preparation methods of precipitation and/or impregnation to disperse the substance on wet or dry carrier material. This is followed by filtration, drying, and mixing of the supported catalyst material
Process category (PROC):
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 4: Forming - Formation of shaped catalysts, for example, by extrusion
Process category (PROC):
PROC 14: Tabletting, compression, extrusion, pelletisation, granulation
Name of activity / technique:
Step 5: Calcination - The catalyst material is thermally treated by calcination at temperatures between 200 to 600°C in a closed system. During this process, the tungstic acid is converted to tungsten trioxide
Process category (PROC):
PROC 1: Chemical production or refinery in closed process without likelihood of exposure or processes with equivalent containment conditions
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 6: Maintenance and cleaning - Various maintenance and cleaning operations inside and outside the equipment
Process category (PROC):
PROC28: Manual maintenance (cleaning and repair) of machinery
Product category used:
PC 20: Products such as ph-regulators, flocculants, precipitants, neutralisation agents
PC 0: Other: UCN P15500: catalyst
Sector of end use:
SU 8: Manufacture of bulk, large scale chemicals (including petroleum products)
SU 9: Manufacture of fine chemicals
Substance supplied to that use in form of:
in a mixture
Subsequent service life relevant for this use:
no
Related assessment:
use assessed in a joint CSR

Uses at industrial sites

Contributing activity / technique for the environment
Environmental release category (ERC):
ERC6a: Use of intermediate
Contributing activity / technique for workers
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
PROC 4: Chemical production where opportunity for exposure arises
PROC 8a: Transfer of substance or mixture (charging and discharging) at non-dedicated facilities
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
Subsequent service life relevant for this use:
no

Uses at industrial sites

Contributing activity / technique for the environment
Environmental release category (ERC):
ERC4: Use of non-reactive processing aid at industrial site (no inclusion into or onto article)
ERC6a: Use of intermediate
ERC6b: Use of reactive processing aid at industrial site (no inclusion into or onto article)
Contributing activity / technique for workers
Process category (PROC):
PROC 1: Chemical production or refinery in closed process without likelihood of exposure or processes with equivalent containment conditions
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
PROC 4: Chemical production where opportunity for exposure arises
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
PROC 9: Transfer of substance or mixture into small containers (dedicated filling line, including weighing)
PROC 14: Tabletting, compression, extrusion, pelletisation, granulation
Subsequent service life relevant for this use:
no

Uses at industrial sites

Contributing activity / technique for the environment
Name of activity / technique:
Use of tungstic acid to manufacture tungsten trioxide powder
Environmental release category (ERC):
ERC6a: Use of intermediate
Contributing activity / technique for workersopen allclose all
Name of activity / technique:
Step 1 - Raw material handling: Tungsyic acid powder is received and stored in sealed containers. The raw material is transferred through an automated loading system to the next step
Process category (PROC):
PROC 8a: Transfer of substance or mixture (charging and discharging) at non-dedicated facilities
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 2 - Loading the batch furnace: Tungstic acid is loaded manually into calcinations boats, which are transferred into the batch furnace
Process category (PROC):
PROC 4: Chemical production where opportunity for exposure arises
Name of activity / technique:
Step 3 - Calcination: Tungsten trioxide is produced by calcination of tungstic acid under oxidising conditions in a furnace. The furnace operates at approximately 700 °C
Process category (PROC):
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
Name of activity / technique:
Step 4 - Unloading the furnace and transfer to homogenisation operation: After calcination, the powder is unloaded from the furnace. The powder is collected in sealed metal containers
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 5 - Homogenisation: After calcination, the powder is blended in a tumbling mixer or a double cone blender to homogenise the tungsten trioxide. The homogenisation operation occurs in a closed system
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 6 - Unloading homogenisation unit and fill into metal containers: Emptying the homogenisation unit and filling powder into sealed metal containers
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 7 - Maintenance and cleaning: Various maintenance and cleaning operations inside and outside the equipment
Process category (PROC):
PROC28: Manual maintenance (cleaning and repair) of machinery
Product category used:
PC 7: Base metals and alloys
Sector of end use:
SU 14: Manufacture of basic metals, including alloys
SU 15: Manufacture of fabricated metal products, except machinery and equipment
Substance supplied to that use in form of:
as such
Subsequent service life relevant for this use:
no
Related assessment:
use assessed in a joint CSR

Uses at industrial sites

Contributing activity / technique for the environment
Name of activity / technique:
Use of tungstic acid to manufacture ultrafine tungsten and tungsten carbide powders
Environmental release category (ERC):
ERC6a: Use of intermediate
Contributing activity / technique for workersopen allclose all
Name of activity / technique:
Step 1 - Transfer from drums to process metal containers: The tungstic acid powder is transferred from drums to process metal containers
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 2 - Furnace charging: The tungstic acid powder is filled manually or automatically into reduction boats for pusher furnaces or it is filled directly to a rotary furnace
Process category (PROC):
PROC 26: Handling of solid inorganic substances at ambient temperature
Name of activity / technique:
Step 3 - Reduction process: The tungsic acid powder is reduced to W metal powder in hydrogen atmosphere at approximately 1000°C either in pusher furnaces or rotary furnaces
Process category (PROC):
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
Name of activity / technique:
Step 4 - Sieving: The tungsten metal powder is sieved immediately after reduction and filled into closed containers
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 5 - Transfer to mixer: The tungsten metal powder is transferred from the transport containers into a mixer
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 6: - Homogenising: The tungsten metal powder is homogenised in a mixer
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 7 - Filling: The homogenised (and optional doped) tungsten metal powder is filled into closed containers
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 8: Transfer to mixer (ONLY for WC manufacture): tungsten metal powder is transferred from the transport containers into a mixer. Carbon black is filled into the mixer
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step 9:- Blending (ONLY for WC manufacture): Mixing of tungsten metal powder with carbon black in a closed system
Process category (PROC):
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 10: Transfer to furnace (ONLY for WC manufacture): The powder blend is unloaded from the mixer and transferred to the furnace hopper. Alternatively, it is unloaded into special containers for batch carburisation. The W and C powder blend is fed into the furnace or furnace boats. Alternatively, the special containers are loaded into the batch furnace
Process category (PROC):
PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
Name of activity / technique:
Step11 - Carburisation or furnace operation (ONLY for WC manufacture): The W and C powder blend is carburized to WC at elevated temperature in the furnace in a protective atmosphere (eg, H2 or N2)
Process category (PROC):
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
Name of activity / technique:
Step 12 - Maintenance: Maintenance of production and ventilation equipment
Process category (PROC):
PROC28: Manual maintenance (cleaning and repair) of machinery
Product category used:
PC 7: Base metals and alloys
Sector of end use:
SU 9: Manufacture of fine chemicals
SU 14: Manufacture of basic metals, including alloys
SU 15: Manufacture of fabricated metal products, except machinery and equipment
Substance supplied to that use in form of:
as such
Subsequent service life relevant for this use:
no
Related assessment:
use assessed in a joint CSR

Uses at industrial sites

Contributing activity / technique for the environment
Name of activity / technique:
Use of tungstic acid based catalysts
Environmental release category (ERC):
ERC4: Use of non-reactive processing aid at industrial site (no inclusion into or onto article)
ERC6a: Use of intermediate
ERC6b: Use of reactive processing aid at industrial site (no inclusion into or onto article)
Contributing activity / technique for workersopen allclose all
Name of activity / technique:
Step 1: Catalyst delivery and handling - The substance is delivered and stored as a solution
Process category (PROC):
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 2: Transfer of liquid raw material into production equipment - The liquid substance is pumped into production equipment
Process category (PROC):
PROC 4: Chemical production where opportunity for exposure arises
Name of activity / technique:
Step 3: Precipitation, Impregnation, Filtration, Drying and Mixing - The substance is used to prepare a supported catalyst system using classical catalyst preparation methods of precipitation and/or impregnation to disperse the substance on wet or dry carrier material. This is followed by filtration, drying, and mixing of the supported catalyst material
Process category (PROC):
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
PROC 3: Manufacture or formulation in the chemical industry in closed batch processes with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 4: Forming - Formation of shaped catalysts, for example, by extrusion
Process category (PROC):
PROC 14: Tabletting, compression, extrusion, pelletisation, granulation
Name of activity / technique:
Step 5: Calcination - The catalyst material is thermally treated by calcination at temperatures between 200 to 600°C in a closed system. During this process, the tungstic acid is converted to tungsten trioxide
Process category (PROC):
PROC 1: Chemical production or refinery in closed process without likelihood of exposure or processes with equivalent containment conditions
PROC 2: Chemical production or refinery in closed continuous process with occasional controlled exposure or processes with equivalent containment conditions
Name of activity / technique:
Step 6: Maintenance and cleaning - Various maintenance and cleaning operations inside and outside the equipment
Process category (PROC):
PROC28: Manual maintenance (cleaning and repair) of machinery
Product category used:
PC 20: Products such as ph-regulators, flocculants, precipitants, neutralisation agents
PC 0: Other: UCN P15500: catalyst
Sector of end use:
SU 8: Manufacture of bulk, large scale chemicals (including petroleum products)
SU 9: Manufacture of fine chemicals
Substance supplied to that use in form of:
in a mixture
Subsequent service life relevant for this use:
no
Related assessment:
use assessed in a joint CSR