Hot Sell Disposable Cylinder 99.999% Industrial Balloon Helium Gas >=1 Pieces 99.999% colorless Best gas
5 Inquiries
7440-59-7
99.999%
Shanghai
Best gas
5.5 cubic meter/40L cylinder
2021-07-01
gas
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic Info
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Product Name:
Helium
Other Name:Helium;Helium-4;o-Helium;p-Helium;Atomic helium;494798-31-1;1312815-28-3
CAS No.:7440-59-7
Molecular Formula:He
InChIKeys:InChIKey=SWQJXJOGLNCZEY-UHFFFAOYSA-N
Molecular Weight:4.00260
Exact Mass:4.00260
EC Number:275-187-7
UNII:206GF3GB41
ICSC Number:0603
UN Number:1046|1963
DSSTox ID:DTXSID7036402
NCI Thesaurus Code:C85242
Color/Form:Colorless gas|Liquid helium (He-4) exists in 2 forms: He-4 I and He-4 II, with a sharp transition point at 2.174 K (3.83 cm Hg)
ATC Code:V - Various
HScode:2804290000
Categories:
Characteristics-
PSA:
0
XLogP3:0.00000
Appearance:Helium appears as a colorless, odorless, noncombustible gas. Can asphyxiate. Inhalation causes the voice to become squeaky (Mickey Mouse voice). Exposure of the container to prolonged heat or fire can cause it to rupture violently and rocket. If liquefied, contact of the very cold liquid with water causes violent boiling. Pressures may build to dangerous levels if the liquid contacts water in a closed container. Used in arc welding, to trace leaks in refrigeration and other closed systems and as a lifting gas for lighter-than-air aircraft.
Density:3.13 g/cm3
Melting Point:-272.2 °C
Boiling Point:-268.9 °C
Flash Point:none
Water Solubility:H2O: 1.5mg/L
Storage Conditions:Conditions for safe storage: Keep container tightly closed in a dry and well-ventilated place.
Vapor Density:Relative vapour density (air = 1): 0.14
Odor:Odorless
Taste:Tasteless
Experimental Properties:Naturally occurring isotopes: He-3; He-4. Isotopes: He-5; He-6; He-7; He-8; He-9; He-10|Lifting power is 0.93 if hydrogen is taken as 1.00|Inert gas. ... Will form compounds with highly electronegative elements such as O, F, Cl. Cannont be frozen by lowering the temperature at ordinary pressure; no triple point.|Trouton's constant 4.64|Critical temperature 5.2014 K; critical pressure 227.5 kPa; critical density 69.64 kg/cu m. Gas: density at 0 °C (101.3 kPa): 0.17850 kg/cu m, density at normal bp: 16.89 kg/cu m. Liquid: normal bp: -268.926 °C; density at normal bp: 125.0 kg/cu m; heat of vaporization (normal bp): 81.70 J/mol. Two liquid forms exist: He I above approximately 2.2 K; He II below approximately 2.2 K. He II is a superconducting liquid; has very low viscosity; superfluid /(4)He/|Critical temperature 3.324 K; critical pressure 116.4 kPa; critical density 41.3 kg/cu m. Gas: density at 0 °C (101.3 kPa): 0.1347 kg/cu m, density at normal bp: 23.64 kg/cu m. Liquid: normal bp: -269.959 °C; density at normal bp: 58.9 kg/cu m; heat of vaporization (normal bp): 25.48 J/mol /(3)He/|ABSORBED BY PLATINUM; APPROX 98% OF LIFTING POWER OF HYDROGEN; AT SEA LEVEL, 1000 CU FT LIFTS 68.5 LB; VALANCE 0|ACOUSTIC VELOCITY 1300 M/SEC|For more Other Experimental Properties (Complete) data for HELIUM (12 total), please visit the HSDB record page.
Air and Water Reactions:No rapid reaction with air. No rapid reaction with water.|Slightly soluble in water.
Reactive Group:Not Chemically Reactive
Reactivity Profile:Chemically inert. These substances undergo no chemical reactions under any known circumstances. They are nonflammable, noncombustible and nontoxic. They can asphyxiate.|These substances undergo no chemical reactions under any known circumstances. They are nonflammable, noncombustible and nontoxic. They can asphyxiate. Contact of very cold liquefied gas with water may result in vigorous or violent boiling of the product and extremely rapid vaporization due to the large temperature differences involved. If the water is hot, there is the possibility that a liquid "superheat" explosion may occur. Pressures may build to dangerous levels if liquid gas contacts water in a closed container, [Handling Chemicals Safely 1980].
Heat of Combustion:0.0 J/kmol
Physical Dangers:The gas is lighter than air.
Hazard IdentificationClassification of the substance or mixture
Not classified.
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H280 Contains gas under pressure; may explode if heated
Precautionary statement(s) Prevention none
Response none
Storage none
Disposal none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions 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
Fireproof if in building. Keep in a well-ventilated room.Conditions for safe storage: Keep container tightly closed in a dry and well-ventilated place.
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Seller Information
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Business Type:
Manufactory
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Main Products:
gas
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Location:
No.58 Beishan Road, Xindeng Industrial Zone, Fuyang District, Hangzhou City,Zhejiang Province, China
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Payment Terms:
TT against copy of documents,L/C
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Average lead Time:
15
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Total Annual Revenue:
Above $100 million
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Total Employees:
301-500
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Year of Establishment:
1999
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Inquiry History5 Inquiries
Country Product Purchase Quantity Date Posted 
Israel
Helium
99.999 MT Mar 11, 2024 
Mongolia
Helium Gas in 40L Cylinder
400 PCS Sep 5, 2025 
Pakistan
Helium Gas
200 PCS Feb 24, 2026 
Switzerland
Helium
250 L Feb 17, 2026 
United States
helium
1 KG Feb 18, 2026 Post an enquiry for this product
