Tungsten 7440-33-7 Analytical reagent Heat-resistant material High density shielding material
1 Inquiries
7440-33-7
Chemical Grade
99%
tianjin
longbang
25kg/Drum
2025-03-31
chemical
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceTungsten is a steel-gray to tin-white metal. It is a heavy metal. It is a very hard metal that is stable in dry air at ordinary temperatures. Although very difficult to work with, tungsten can be cut with a hacksaw, forged, or spun. Commercially, tungsten is obtained via the reduction of tungsten oxide with hydrogen or carbon. Due to its hardness, tungsten has the highest boiling point and highest tensile strength of all metals. Although the metal shows resistance to corrosion, it can oxidize i
Dull gray powder or hard, brittle, steel-gray to white metal. Difficult to melt. Mp: 3410°C; bp; 5900°C. Density: 19.3 g/cm3. Used in alloys, light bulb filaments, and cutting tools. Tungsten Dust (for example, from grinding) may present a moderate fire hazard if allowed to accumulate and exposed to an ignition source.|DryPowder; DryPowder, OtherSolid; OtherSolid|GREY-TO-WHITE POWDER.|Physical properties vary depending upon the specific soluble tungsten compound.|Hard, brittle, steel-gray to tin-white solid.
Dull gray powder or hard, brittle, steel-gray to white metal. Difficult to melt. Mp: 3410°C; bp; 5900°C. Density: 19.3 g/cm3. Used in alloys, light bulb filaments, and cutting tools. Tungsten Dust (for example, from grinding) may present a moderate fire hazard if allowed to accumulate and exposed to an ignition source.|Tungsten is a naturally occurring element. It occurs in rocks and minerals combined with other chemicals, but never as a pure metal. Elemental tungsten is a white to steel gray metal (depending on the purity) that can be used in pure form or mixed with other metals to make alloys. Tungsten alloys tend to be strong and flexible, resist wear, and conduct electricity well. Tungsten is used in products such as x-ray tubes, light bulbs, high-speed tools, welding electrodes, turbine blades, golf clubs, darts, fishing weights, gyroscope wheels, phonograph needles, bullets, and armor penetrators. Tungsten is also used as a catalyst to speed up chemical reactions. Chemical compounds of tungsten are used for many purposes. Cemented tungsten carbide is a hard substance used to make grinding wheels and cutting or forming tools. Other tungsten compounds are used in ceramic pigments, as fire retardant coatings for fabrics, and as color-resistant dyes for fabrics.|Tungsten is a chromium group element atom. It has a role as a micronutrient.|A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.Basic Info-
Product Name:
Tungsten
Other Name:Tungsten;Wolfram;VA (tungsten);VA;BIO (metal);BIO;Tungsten element;D 20 (metal);D 20;Ventron 00620;W 3N8;GE-U 10-4795;C 50H;5N-W;B 10;D 100;D 100 (metal);B 10 (metal);W 3KD;SG 50W;RST-U;WT;WL;WL 100;D 100W;AW 3105;FW 1-150;PF 17W;Osram M-37;C 6-649;WS 139;C 5-531;S-Tan;WWE 06PB;WWE 08PB;W 4kD;C 50;W 1kD;W 461107;YFM 08N50;74MR0001;NP-W-2;WD 1-60;37374-90-6
CAS No.:7440-33-7
Molecular Formula:W
InChIKeys:InChIKey=WFKWXMTUELFFGS-UHFFFAOYSA-N
Molecular Weight:183.84
Exact Mass:183.95100
EC Number:231-143-9
UNII:V9306CXO6G
ICSC Number:1404
UN Number:3089|1325
DSSTox ID:DTXSID8052481
Color/Form:Steel-gray to tin-white metal; body centered cubic structure|CRYSTALLINE FORM GRAY-BLACK, CUBIC|Hard, brittle, steel-gray to tin-white solid.
ATC Code:QI09AA01
HScode:81011000
Categories:
Characteristics-
PSA:
0
XLogP3:0.00000
Appearance:Silver-gray wire
Density:18.7-19.3 g/cm3 @ Temp: 20 °C
Melting Point:3410 °C
Boiling Point:5900 °C @ Press: 760 Torr
Flash Point:-23 °C
Water Solubility:Insoluble
Storage Conditions:Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Do not expose to air. Store under an inert atmos
Vapor Pressure:0 mmHg (approx)
Toxicity:Abdominal cavity-rat LD50: 5000 mg/kg
Flammability characteristics:Spontaneously ignitable in air; toxic tungsten oxide fumes are released in the fire
Experimental Properties:Very pure tungsten can be cut with hacksaw and forged, spun, drawn, and extruded; impure metal brittle, worked with difficulty|NOT AFFECTED BY SULFUR OR PHOSPHORUS; GOOD ELECTRICAL CONDUCTIVITY|VIGOROUS REACTION WITH BROMINE TRIFLUORIDE, CHLORINE TRIFLUORIDE; REACTION WITH FLUORINE MAY BE INCANDESCENT|Corroded by sea water.|For more Other Experimental Properties (Complete) data for TUNGSTEN, ELEMENTAL (7 total), please visit the HSDB record page.
Air and Water Reactions:No rapid reaction with air No rapid reaction with water
Reactive Group:Metals, Less Reactive
Reactivity Profile:TUNGSTEN is stable at room temperature. Very slowly attacked by nitric acid, sulfuric acid, and aqua regia. Dissolved by a mixture of hydrofluoric acid and nitric acid. No reaction with aqueous bases. Attacked rapidly by molten alkaline melts such as Na2O2 or KNO3/NaOH. Vigorous reactions with bromine trifluoride and chlorine trifluoride. Becomes incandescent upon heating with lead oxide; becomes incandescent in cold fluorine and with iodine pentafluoride. Combustible in the form of finely divided powder and may ignite spontaneously.
Autoignition Temperature:>=100 °C
Flammable Limits:Combustible in the form of finely divided powder; may ignite spontaneously.
Physical Dangers:Dust explosion possible if in powder or granular form, mixed with air.
Heat of Vaporization:1150 cal/g
Hazard IdentificationClassification of the substance or mixture
Flammable solids, Category 1
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
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions 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.
Conditions for safe storage, including any incompatibilities
Separated from strong oxidants and strong acids. Well closed.
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Seller Information
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Business Type:
Trader
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Main Products:
chemical
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Location:
1803-1, Block A, Huaqiang Plaza, 77 Minzu Road, Xinhua District, Shijiazhuang City, Hebei Province, China
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Payment Terms:
TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance
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Average lead Time:
15
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Total Annual Revenue:
$5 million-$10 million
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Total Employees:
51-100
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Year of Establishment:
2023
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Inquiry History1 Inquiries
Country Product Purchase Quantity Date Posted 
Pakistan
Tungsten Powder (Type TKSD2 F WG1)
143 MT Nov 15, 2023 Post an enquiry for this product
