Tungsten carbide
Product identifier
- Product name: Tungsten carbide
- CBnumber: CB5174366
- CAS: 12070-12-1
- EINECS Number: 235-123-0
- Synonyms: tungsten carbide,TUNGSTEN(IV) CARBIDE
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
- Uses advised against: none
Company Identification
- Company: Chemicalbook
- Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
- Telephone: 400-158-6606
Classification of the substance or mixture
Not classified.
Label elements
Pictogram(s)
-
Signal word
No signal word
H228 Flammable solid
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/…/equipment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
none
none
none
none
Other hazards
no data available
Substance
- Product name: Tungsten carbide
- Synonyms: tungsten carbide,TUNGSTEN(IV) CARBIDE
- CAS: 12070-12-1
- EC number: 235-123-0
- MF: CW
- MW: 195.85
Description of first aid measures
If inhaledFresh air, rest.
Take off contaminated clothing immediately. Wash off with soap and plenty of water. Consult a doctor.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth with water. Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a doctor or Poison Control Center immediately.
Most important symptoms and effects, both acute and delayed
no data available
Indication of any immediate medical attention and special treatment needed
no data available
Extinguishing media
Use dry chemical, carbon dioxide or alcohol-resistant foam.
Specific Hazards Arising from the Chemical
Not combustible.
Advice for firefighters
In case of fire in the surroundings, use appropriate extinguishing media.
NFPA 704
| HEALTH | 1 | Exposure would cause irritation with only minor residual injury (e.g. acetone, sodium bromate, potassium chloride) | |
| FIRE | 0 | Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Materials that will not burn in air when exposed to a temperature of 820 °C (1,500 °F) for a period of 5 minutes.(e.g. Carbon tetrachloride) | |
| REACT | 0 | Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2) | |
| SPEC. HAZ. |
Personal precautions, protective equipment and emergency procedures
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Store and dispose of according to local regulations.
Environmental precautions
Prevent further spillage or leakage if it is safe to do so. Do not let the chemical enter drains. Discharge into the environment must be avoided.
Methods and materials for containment and cleaning up
Collect and arrange disposal. Keep the chemical in suitable and closed containers for disposal. Remove all sources of ignition. Use spark-proof tools and explosion-proof equipment. Adhered or collected material should be promptly disposed of, in accordance with appropriate laws and regulations.
Precautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from strong oxidants.
Control parameters
Occupational Exposure limit valuesTLV: (respirable fraction): 3 mg/m3, as TWA
no data available
Exposure controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.
Individual protection measures
Eye/face protectionWear safety spectacles in combination with breathing protection.
Wear fire/flame resistant and impervious clothing. Handle with gloves. Gloves must be inspected prior to use. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.
Avoid inhalation of dust and mist. Use local exhaust or breathing protection.
no data available
Information on basic physicochemical properties
- Physical statepowder
- ColourGray
- Odour
no data available
- Melting point/freezing point
2 785 °C. Atm. press.:1 013 hPa. Remarks:Assumed to be tested under standard conditions.
- Boiling point or initial boiling point and boiling range
6 000 °C. Atm. press.:1 013 hPa. Remarks:Pressure not noted, assumed to be tested under standard conditions.
- Flammability
no data available
- Lower and upper explosion limit/flammability limit
no data available
- Flash point
no data available
- Auto-ignition temperature
> 140 °C. Atm. press.:1 013 hPa. Remarks:100 mm cube at 140 degrees C.
- Decomposition temperature
no data available
- pH
no data available
- Kinematic viscosity
no data available
- Solubility
In water: 536 ug/L total dissolved W, @ 24 hours of 7-day definitive (100 mg/L loading) for WC #3. Temperature:21 °C. pH:6.;708 ug/L tungstate anion (WO4--), @ 24 hours of 7-day definitive (100 mg/L loading). Temperature:21 °C. pH:6.;1 037 ug/L total dissolved W, 24-hour scoping test (100 mg/L loading). Temperature:21 °C. pH:8.5.
- Partition coefficient n-octanol/water
no data available
- Vapour pressure
no data available
- Density and/or relative density15.63
- Relative vapour density15.63
- Particle characteristics
no data available
Reactivity
no data available
Chemical stability
no data available
Possibility of hazardous reactions
Reacts violently with strong oxidants. This generates fire and explosion hazard.
Conditions to avoid
no data available
Incompatible materials
no data available
Hazardous decomposition products
no data available
Acute toxicity
- Oral: LD50 - rat (male/female) - > 2 000 mg/kg bw.
- Inhalation: LC50 - rat (male/female) - > 5.3 mg/L air.
- Dermal: LD50 - rat (male/female) - > 2 000 mg/kg bw.
Skin corrosion/irritation
no data available
Serious eye damage/irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
no data available
Reproductive toxicity
no data available
STOT-single exposure
May cause mechanical irritation.
STOT-repeated exposure
Repeated or prolonged inhalation of dust particles may cause effects on the lungs. This may result in fibrosis.
Aspiration hazard
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Toxicity
- Toxicity to fish: LC50 - Danio rerio (previous name: Brachydanio rerio) - > 1 000 mg/L - 96 h.
- Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna - > 1 000 mg/L - 48 h.
- Toxicity to algae: EC50 - Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum) - 52.9 mg/L - 72 h.
- Toxicity to microorganisms: EC50 - activated sludge of a predominantly domestic sewage - > 1 000 mg/L - 3 h.
Persistence and degradability
no data available
Bioaccumulative potential
no data available
Mobility in soil
no data available
Other adverse effects
no data available
Disposal methods
ProductThe material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.
Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.
UN Number
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Transport hazard class(es)
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Packing group, if applicable
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Environmental hazards
ADR/RID: No
IMDG: No
IATA: No
Special precautions for user
no data available
Transport in bulk according to IMO instruments
no data available
Safety, health and environmental regulations specific for the product in question
European Inventory of Existing Commercial Chemical Substances (EINECS)Abbreviations and acronyms
- CAS: Chemical Abstracts Service
- ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
- RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
- IMDG: International Maritime Dangerous Goods
- IATA: International Air Transportation Association
- TWA: Time Weighted Average
- STEL: Short term exposure limit
- LC50: Lethal Concentration 50%
- LD50: Lethal Dose 50%
- EC50: Effective Concentration 50%
References
- IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
- HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
- IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
- eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
- CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
- ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
- ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
- Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
- ECHA - European Chemicals Agency, website: https://echa.europa.eu/
Other Information
Alternative CAS number 11130-73-7.Health effects of exposure to the substance have not been investigated adequately.This material is often used in conjunction with other substances such as cobalt compounds.Pneumoconiosis has occurred in exposed persons.The responsible agent is not yet clear.
The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.