Registration Dossier
Registration Dossier
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EC number: 915-093-1 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Manufacture
Documentsopen allclose all
Manufacture
Contributing activity / technique for the environment
- Environmental release category (ERC):
- ERC1: Manufacture of the substance
Contributing activity / technique for workersopen allclose all
- 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 4: Chemical production where opportunity for exposure arises
- Process category (PROC):
- PROC 5: Mixing or blending in batch processes
- 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 15: Use as laboratory reagent
- Process category (PROC):
- PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
- Related assessment:
- use assessed in a joint CSR
Manufacture
Contributing activity / technique for the environment
- Name of activity / technique:
- Manufacture of fused tungsten carbide powder
- Environmental release category (ERC):
- ERC1: Manufacture of the substance
Contributing activity / technique for workersopen allclose all
- Name of activity / technique:
- Step 1: Preparation - Raw material handling: tungsten (W) metal powder is received in closed steel containers and carbon black powder in paper bags. W metal and carbon black powders are weighed and transferred to another steel container; this involves manual operation. Not applicable to fused tungsten carbide powder. Exposure to W metal and carbon dust is possible. (Note that the flammability classification is for W powder with a particle size less than 9.0 µm only).
- Process category (PROC):
- PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
- Name of activity / technique:
- Step 2: Mixing - Tungsten metal and carbon black powders are mixed in an intensive mixer. Loading and unloading are made through powder tight systems. Mixer cleaning involves manual operation. Not applicable to fused tungsten carbide powder. Exposure to W metal and carbon dust is possible.
- 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
- Name of activity / technique:
- Step 3: Melting operation - Approximately 20 kg of W and C powder mix is loaded into the crucible of an induction furnace and heated until it melts. Fused tungsten carbide is cast on a water cooled copper plate for quenching. After complete cooling, it is stored in steel containers. The transfer of fused tungsten carbide and recovery of flashings is manual. There is limited exposure to fused tungsten carbide as it is in bulk form.
- Process category (PROC):
- 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 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
- Name of activity / technique:
- Step 4: Crushing - The as-quenched fused tungsten carbide is transferred to the hopper of a jaw crusher. It is continuously sieved, and the coarse particles recycled until the desired size is achieved. This is done in powder tight equipment. Possible short-term exposure to fused tungsten carbide fine powders.
- 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 5: Final sieving / Blending - The crushed fused tungsten carbide is sieved and, if needed, blended until the desired size distribution is achieved. This is done in powder tight equipment. This step involves repeated sampling and testing of the material. Possible short-term exposure to fused tungsten carbide fine powders.
- 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 5: Mixing or blending in batch processes
- PROC 8b: Transfer of substance or mixture (charging and discharging) at dedicated facilities
- PROC 15: Use as laboratory reagent
- Name of activity / technique:
- Step 6: Packaging - The product is weighed and packed in steel drums with inner polythene bags. Possible short-term exposure to fused tungsten carbide fine powders
- Process category (PROC):
- 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)
- Name of activity / technique:
- Step 7: Maintenance and cleaning - Various maintenance and cleaning operations inside and outside the equipment. Exposure to tungsten and fused tungsten carbide powders is possible. (Note that the flammability classification is for tungsten powder with a particle size less than 9.0 µm only).
- Process category (PROC):
- PROC28: Manual maintenance (cleaning and repair) of machinery
- Related assessment:
- use assessed in a joint CSR
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
