Name: Hafnium Sponge
CAS: 7440-58-6
EC Number: 231-166-4
Chemical Formular: Hf
Appearance: steel gray
Molecular Weight: 178.5 g/mol
Melting Point: 2506 K (2233 °C, 4051 °F)
Boiling Point: 4876 K (4603 °C, 8317 °F)
Density: 13.31 g/cm3
Solubility in water: n/a
Exact Mass: 179.94656 g/mol
Monoisotopic Mass: 179.94656 g/mol
Topological Polar Surface Area: 0 A^2
Complexity: 0
MATERIAL SAFETY DATA SHEETS
According to the UN GHS revision 8
SECTION 1: Identification
1.1
GHS Product identifier
| Product name | Hafnium Sponge |
|---|
1.2
Other means of identification
| Product number | – |
|---|---|
| Other names | – |
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 | Elements China Limited |
|---|---|
| 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
Pyrophoric solids, Category 1
2.2
GHS label elements, including precautionary statements
| Pictogram(s) |  |
|---|---|
| Signal word | Danger |
| Hazard statement(s) | H250 Catches fire spontaneously if exposed to air |
| Precautionary statement(s) | |
| Prevention | P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P222 Do not allow contact with air. P233 Keep container tightly closed. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/… |
| Response | P302+P335+P334 IF ON SKIN: Brush off loose particles from skin. Immerse in cool water [or wrap in wet bandages]. 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 |
|---|---|---|---|
| Hafnium Sponge | – | 7440-58-6 | 231-166-4 |
SECTION 4: First-aid measures
4.1
Description of necessary first-aid measures
If inhaled
Fresh air, rest.
Following skin contact
Rinse contaminated clothes (fire hazard) with plenty of water. Remove contaminated clothes. Rinse and then wash skin with water and soap.
Following eye contact
Rinse with plenty of water (remove contact lenses if easily possible).
Following ingestion
Rinse mouth.
4.2
Most important symptoms/effects, acute and delayed
Excerpt from ERG Guide 135 [Substances – Spontaneously Combustible]: Fire will produce irritating, corrosive and/or toxic gases. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution. (ERG, 2016)
4.3
Indication of immediate medical attention and special treatment needed, if necessary
Absorption, Distribution and Excretion
Hafnium can be absorbed into the body by inhalation of its aerosol.
SECTION 5: Fire-fighting measures
5.1
Suitable extinguishing media
If material on fire or involved in fire: Use suitable dry powder. … Use dry chemical or carbon dioxide. … Use water only if flooding quantities are available. Hafnium powder, dry
5.2
Specific hazards arising from the chemical
Excerpt from ERG Guide 135 [Substances – Spontaneously Combustible]: Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated. (ERG, 2016)
5.3
Special protective actions for fire-fighters
Use special powder, dry sand, water in large amounts.
SECTION 6: Accidental release measures
6.1
Personal precautions, protective equipment and emergency procedures
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Wet powder to prevent dusting and ignition. Sweep spilled substance into covered water-filled containers. Then store and dispose of according to local regulations. Do NOT wash away into sewer. Do NOT absorb in saw-dust or other combustible absorbents.
6.2
Environmental precautions
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Wet powder to prevent dusting and ignition. Sweep spilled substance into covered water-filled containers. Then store and dispose of according to local regulations. Do NOT wash away into sewer. Do NOT absorb in saw-dust or other combustible absorbents.
6.3
Methods and materials for containment and cleaning up
Persons not wearing protective equipment and clothing should be restricted from areas of spills until cleanup has been completed. 1. Ventilate area of spill. 2. Collect spilled material in most convenient and safe manner and deposit in sealed containers for reclamation, or for disposal in secured sanitary landfill. Liq containing hafnium…should be absorbed in vermiculite, dry sand, earth, or similar material.
SECTION 7: Handling and storage
7.1
Precautions for safe handling
NO open flames, NO sparks and NO smoking. Do NOT expose to friction or shock. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.
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
Fireproof. Separated from strong oxidants, strong acids and halogens. Keep under inert gas. Store only in original container.Storage: Store hafnium in a fireproof area. Keep it separate from strong oxidizing agents, strong bases, halogens, phosphorus, and sulfur. Keep stored under water.
SECTION 8: Exposure controls/personal protection
8.1
Control parameters
Occupational Exposure limit values
TLV: 0.5 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
Avoid inhalation of dust. Use closed system.
Thermal hazards
no data available
SECTION 9: Physical and chemical properties and safety characteristics
| Physical state | Hafnium powder, dry, is a grayish metallic colored powder. Dust from dry powder may be ignited by static electricity. The dry powder reacts with moisture to produce hydrogen, a flammable gas. The heat from this reaction may be sufficient to ignite the hydrogen. It does not appreciably react with large quantities of water. |
|---|---|
| Colour | Gray crystals |
| Odour | no data available |
| Melting point/freezing point | 2227ºC(lit.) |
| Boiling point or initial boiling point and boiling range | 4602°C(lit.) |
| Flammability | Explosive in powder form (either dry or with <25% water); finely divided powder can be ignited by static electricity or even SPONTANEOUSLY. |
| Lower and upper explosion limit/flammability limit | no data available |
| Flash point | no data available |
| Auto-ignition temperature | 20 deg C for dust cloud |
| Decomposition temperature | no data available |
| pH | no data available |
| Kinematic viscosity | no data available |
| Solubility | Insoluble (NIOSH, 2016) |
| Partition coefficient n-octanol/water | no data available |
| Vapour pressure | 0 mm Hg (approx) (NIOSH, 2016) |
| Density and/or relative density | 13.3g/cm3(lit.) |
| Relative vapour density | no data available |
| Particle characteristics | no data available |
SECTION 10: Stability and reactivity
10.1
Reactivity
Recommended Exposure Limit: 50 mg/cu m (as Hf)
The substance may ignite spontaneously on contact with air. May decompose on shock, friction or concussion. May explode on heating. Reacts violently with halogens, strong acids and strong oxidants. This generates explosion hazard.
10.2
Chemical stability
no data available
10.3
Possibility of hazardous reactions
The substance may spontaneously ignite on contact with air and at higher temperatures with nitrogen, phosphorous and sulphur. /Hafnium powder, wet or dry/Dust explosion possible if in powder or granular form, mixed with air.Metals, such as HAFNIUM METAL(reactivity similar to zirconium), are reducing agents and tend to react with oxidizing agents. Their reactivity is strongly influenced by their state of subdivision: in bulk they often resist chemical combination; in powdered form they may react very rapidly. Thus, as a bulk metal it is somewhat unreactive, but finely divided material may be pyrophoric. The metal reacts exothermically with compounds having active hydrogen atoms (such as acids and water) to form flammable hydrogen gas and caustic products. The reactions are less vigorous than the similar reactions of alkali metals, but the released heat can still ignite the released hydrogen. Materials in this group may react with azo/diazo compounds to form explosive products. These metals and the products of their corrosion by air and water can catalyze polymerization reactions in several classes of organic compounds; these polymerizations sometimes proceed rapidly or even explosively. Some metals in this group form explosive products with halogenated hydrocarbons.
10.4
Conditions to avoid
no data available
10.5
Incompatible materials
Although /hafnium/ is relatively inert, when powdered it becomes very reactive. The dry powder may react explosively at elevated temperatures with nitrogen, phosphorus, oxygen, sulfur and other non-metals. The halogens react similarly, and in contact with hot concentrated nitric acid and other oxidants it may explode (often after a delay with nitric acid). The powder is pyrophoric and readily ignitable by friction, heat or static sparks, and if dry burns fiercely. Presence of water (5-10%) slightly reduces the ease of ignition, but combustion of the damp powder proceeds explosively (the oxygen content of water, 89%, being much higher than that of air).
10.6
Hazardous decomposition products
May explosively decompose on shock, friction, or concussion. Hafnium powder
SECTION 11: Toxicological information
Acute toxicity
- Oral: no data available
- Inhalation: no data available
- Dermal: no data available
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
no data available
STOT-repeated exposure
no data available
Aspiration hazard
no data available
SECTION 12: Ecological information
12.1
Toxicity
- Toxicity to fish: no data available
- Toxicity to daphnia and other aquatic invertebrates: no data available
- Toxicity to algae: no data available
- Toxicity to microorganisms: no data available
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: UN2545 (For reference only, please check.) | IMDG: UN2545 (For reference only, please check.) | IATA: UN2545 (For reference only, please check.) |
14.2
UN Proper Shipping Name
| ADR/RID: HAFNIUM POWDER, DRY (For reference only, please check.) | IMDG: HAFNIUM POWDER, DRY (For reference only, please check.) | IATA: HAFNIUM POWDER, DRY (For reference only, please check.) |
14.3
Transport hazard class(es)
| ADR/RID: 4.2 (For reference only, please check.) | IMDG: 4.2 (For reference only, please check.) | IATA: 4.2 (For reference only, please check.) |
14.4
Packing group, if applicable
| ADR/RID: I (For reference only, please check.) | IMDG: I (For reference only, please check.) | IATA: I (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 |
|---|---|---|---|
| Hafnium Sponge | – | 7440-58-6 | 231-166-4 |
| 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 | Listed. | ||
| New Zealand Inventory of Chemicals (NZIoC) | Not Listed. | ||
| Philippines Inventory of Chemicals and Chemical Substances (PICCS) | Listed. | ||
| Vietnam National Chemical Inventory | Listed. | ||
| Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) | Not 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/
Other Information
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.Powder is normally handled wetted with no less than 25% of water to reduce the fire and explosion risk. UN number 2545 is for dry powder, according to the specification of the powder Packing Group can be either I, II, or III. The GHS classification will also vary according to the specification of the powder. Other UN number is: 1326 HAFNIUM POWDER, WETTED with not less than 25% water; class 4.1; packing group: II.
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.
| Chemical Formular: | Hf |
| PubChem CID: | 23986 |
| IUPAC Name: | hafnium |
| Inchl: | InChI=1S/Hf |
| InChI Key: | VBJZVLUMGGDVMO-UHFFFAOYSA-N |
| Canonical SMILES: | [Hf] |
| Pictogram(s): | n/a |
| Signal: | n/a |
| GHS Hazard Statements: | n/a |
| Hazard Codes: | n/a |
| Risk Codes: | n/a |
| Precautionary Statement Codes: | n/a |
| Flash Point: | n/a |
Spongy hafnium
Be used in atomic energy industry and aerospace industry, be used for the control rod material in the nuclear reactor, can be made for the small size and large energy rocket booster.
Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1923, by Coster and Hevesy, making it the last stable element to be discovered. Hafnium is named after Hafnia, the Latin name for Copenhagen, where it was discovered.
Fiber drums, steel drums, and bulk bags
