Spherical Tungsten Powder
CAS No. 7440-33-7 | Chemical Formula W
Molecular Weight 183.8 EC No. 231-143-9 MDL No. MFCD00011461
Description
Powder characteristics:
Spherical tungsten powder has high purity (≥99.9%), ultra-low oxygen (≤100ppm), high sphericity (≥98%), smooth surface, no satellite ball, uniform particle size distribution, excellent flow performance (≤6.0s/50g), high loose density (≥9.5g/cm3) and vibration density (≥11.5g/cm3).
Applicable process:
Laser/electron beam additive manufacturing (SLM/EBM), laser direct deposition (DLD), hot isostatic powder molding (HIP), metal injection molding (MIM), powder metallurgy (PM), laser deposition (LC) and other processes.
Product specifications:
15-45μm, 15-53μm, 45-75μm, 45-105μm, 75-150μm. (Can be customized according to customer requirements)
Product Packaging:
Vacuum package, 1kg/bag, 2kg/bag; 25 kg/drum lined with plastic bags; Special packing is available according to user’s requirement.
Specification
| Component Analysis | |||||
|---|---|---|---|---|---|
| Item | Test Result | Unit | Item | Test Result | Unit |
| W | ≥99.9 | % | Al | <0.002 | % |
| Si | <0.001 | % | Mg | <0.001 | % |
| Mn | <0.001 | % | Ni | <0.001 | % |
| As | <0.001 | % | Sn | <0.001 | % |
| Sb | <0.001 | % | Cu | <0.001 | % |
| Ca | <0.001 | % | Mo | <0.001 | % |
| K+Na | ≤0.001 | % | Pb | <0.001 | % |
| C | ≤0.005 | % | O | ≤0.01 | % |
| N | ≤0.003 | % | P | <0.002 | % |
| Density | Hall Flow Rate | |||
|---|---|---|---|---|
| Apparet Density | Tap Density | Unit | Value | Unit |
| ≥9.5 | ≥11.5 | g/cm³ | ≤6 | s/50g |
Application
Tungsten melting point is 3410℃, high temperature resistance, excellent ray shielding performance. Rf plasma spheroidized tungsten powder has the characteristics of high sphericity, good fluidity, high purity, large loose density, full density inside the particle, no hollow powder and so on. It is widely used in national defense and military fields.
MSDS
MATERIAL SAFETY DATA SHEETS
According to the UN GHS revision 8
SECTION 1: Identification
1.1
GHS Product identifier
| Product name | Tungsten Powder |
|---|
1.2
Other means of identification
| Product number | – |
|---|---|
| Other names | Tungsten ICPStd.;Tungsten granular; |
1.3
Recommended use of the chemical and restrictions on use
| Identified uses | Industrial and scientific research uses. |
|---|---|
| Uses advised against | no data available |
1.4
Supplier’s details
| Company | Shanghai Greenearth Chemicals Co.,Ltd |
|---|---|
| Address | Building 2, No.5555, Shenzhuan Hwy, Shanghai , China |
| Telephone | +86-021-3776-2181 |
1.5Emergency phone number
| Emergency phone number | +86-021-3776-2181 |
|---|---|
| Service hours | Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours). |
SECTION 2: Hazard identification
2.1
Classification of the substance or mixture
Flammable solids, Category 1
2.2
GHS label elements, including precautionary statements
| Pictogram(s) |  |
|---|---|
| Signal word | Danger |
| Hazard statement(s) | H228 Flammable solid H252 Self-heating in large quantities; may catch fire |
| Precautionary statement(s) | |
| Prevention | P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/… |
| Response | P370+P378 In case of fire: Use … to extinguish. |
| Storage | none |
| Disposal | none |
2.3
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
3.1
Substances
| Chemical name | Common names and synonyms | CAS number | EC number |
|---|---|---|---|
| Tungsten Powder | – | 7440-33-7 | 231-143-9 |
SECTION 4: First-aid measures
4.1
Description of necessary first-aid measures
If inhaled
Fresh air, rest.
Following skin contact
Rinse and then wash skin with water and soap.
Following eye contact
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Following ingestion
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.
4.2
Most important symptoms/effects, acute and delayed
no data available
4.3
Indication of immediate medical attention and special treatment needed, if necessary
no data available
SECTION 5: Fire-fighting measures
5.1
Suitable extinguishing media
Use dry chemical, carbon dioxide or alcohol-resistant foam.
5.2
Specific hazards arising from the chemical
Highly flammable when finely divided.
5.3
Special protective actions for fire-fighters
In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep drums, etc., cool by spraying with water.
SECTION 6: Accidental release measures
6.1
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 containers. If appropriate, moisten first to prevent dusting.
6.2
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.
6.3
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.
SECTION 7: Handling and storage
7.1
Precautions for safe handling
NO open flames, NO sparks and NO smoking.
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.
7.2
Conditions for safe storage, including any incompatibilities
Separated from strong oxidants and strong acids. Well closed.
SECTION 8: Exposure controls/personal protection
8.1
Control parameters
Occupational Exposure limit values
TLV: (respirable fraction): 3 mg/m3, as TWA
Biological limit values
no data available
8.2
Appropriate engineering controls
Ensure adequate ventilation.
Handle in accordance with good industrial hygiene and safety practice.
Set up emergency exits and the risk-elimination area.
8.3Individual protection measures, such as personal protective equipment (PPE)
Eye/face protection
Wear safety spectacles.
Skin protection
Protective gloves.
Respiratory protection
Use local exhaust.
Thermal hazards
no data available
SECTION 9: Physical and chemical properties and safety characteristics
| Physical state | Solid. Powder. |
|---|---|
| Colour | Canary yellow, heavy powder; dark orange when heated. |
| Odour | no data available |
| Melting point/freezing point | 1 472 °C. |
| Boiling point or initial boiling point and boiling range | 1 837 °C. Atm. press.:1 Bar. |
| Flammability | no data available |
| Lower and upper explosion limit/flammability limit | no data available |
| Flash point | -23ºC |
| Auto-ignition temperature | >= 100 °C. Atm. press.:Ca. 14.7 PSI for a 100 mm cube. |
| Decomposition temperature | no data available |
| pH | no data available |
| Kinematic viscosity | no data available |
| Solubility | In water: 18.154 mg/L total dissolved W, 24-hour screening (100 mg/L loading). Temperature:21 °C. pH:8.5.;20.225 mg/L tungstate anion (WO4–), 24-hour screening (100 mg/L loading). Temperature:21 °C. pH:8.5.;0.607 mg/L total dissolved W, 7-day definitive (1 mg/L loading). Temperature:21 °C. pH:8.5. |
| Partition coefficient n-octanol/water | no data available |
| Vapour pressure | 0 Pa. Temperature:1 700 °C.;0.4 Pa. Temperature:2 300 °C.;0.002 Pa. Temperature:3 000 °C. |
| Density and/or relative density | 7.21 – 7.3 g/cm³. Temperature:23 °C.;7.27 g/cm³. Temperature:23 °C. |
| Relative vapour density | no data available |
| Particle characteristics | no data available |
SECTION 10: Stability and reactivity
10.1
Reactivity
no data available
10.2
Chemical stability
no data available
10.3
Possibility of hazardous reactions
The substance may ignite spontaneously on contact with air. Reacts with oxidants. This generates fire and explosion hazard. Reacts violently with strong acids.
10.4
Conditions to avoid
no data available
10.5
Incompatible materials
no data available
10.6
Hazardous decomposition products
no data available
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 – rat (male/female) – > 2 000 mg/kg bw. Remarks:No toxic effects were present after a single dose of 2000 mg/kg of the test substance.
- Inhalation: LC50 – rat (male/female) – > 5.36 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 to the eyes, skin and respiratory tract.
STOT-repeated exposure
no data available
Aspiration hazard
A harmful concentration of airborne particles can be reached quickly when dispersed.
SECTION 12: Ecological information
12.1
Toxicity
- Toxicity to fish: LC0 – Danio rerio (previous name: Brachydanio rerio) – >= 5.25 mg/L – 48 h. Remarks:WO3.
- Toxicity to daphnia and other aquatic invertebrates: EC0 – Daphnia magna – >= 5 mg/L – 24 h. Remarks:WO3.
- Toxicity to algae: EC0 – Desmodesmus subspicatus (previous name: Scenedesmus subspicatus) – >= 1 mg/L – 72 h.
- Toxicity to microorganisms: EC50 – activated sludge of a predominantly domestic sewage – > 10 000 mg/L – 3 h. Remarks:Respiration rate.
12.2
Persistence and degradability
no data available
12.3
Bioaccumulative potential
no data available
12.4
Mobility in soil
no data available
12.5
Other adverse effects
no data available
SECTION 13: Disposal considerations
13.1
Disposal methods
Product
The 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.
Contaminated packaging
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.
SECTION 14: Transport information
14.1
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.) |
14.2
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.) |
14.3
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.) |
14.4
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.) |
14.5
Environmental hazards
| ADR/RID: No | IMDG: No | IATA: No |
14.6
Special precautions for user
no data available
14.7
Transport in bulk according to IMO instruments
no data available
SECTION 15: Regulatory information
15.1
Safety, health and environmental regulations specific for the product in question
| Chemical name | Common names and synonyms | CAS number | EC number |
|---|---|---|---|
| Tungsten Powder | – | 7440-33-7 | 231-143-9 |
| European Inventory of Existing Commercial Chemical Substances (EINECS) | Listed. | ||
| EC Inventory | Listed. | ||
| United States Toxic Substances Control Act (TSCA) Inventory | Listed. | ||
| China Catalog of Hazardous chemicals 2015 | Not Listed. | ||
| New Zealand Inventory of Chemicals (NZIoC) | Listed. | ||
| Philippines Inventory of Chemicals and Chemical Substances (PICCS) | Listed. | ||
| Vietnam National Chemical Inventory | Listed. | ||
| Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) | Listed. | ||
| Korea Existing Chemicals List (KECL) | Listed. | ||
SECTION 16: Other information
Information on revision
| Creation Date | Sep 10, 2020 |
|---|---|
| Revision Date | Sep 10, 2020 |
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/
Any questions regarding this SDS, Please send your inquiry to [email protected]
Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and
shall be used only as a guide. The information in this document is based on the present state of our
knowledge and is applicable to the product with regard to appropriate safety precautions. It does not
represent any guarantee of the properties of the product. We as supplier shall not be held liable for any
damage resulting from handling or from contact with the above product.
