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Time of Issue: Apr. 12, 2013 9:25:06
Period OF Validity: Apr. 12, 2014 9:25:07
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Application: Helium is used for many purposes that require some of its unique properties, such as its low boiling point, low density, low solubility, high thermal conductivity, or inertness. Of the 2008 world helium total production of about 32 million kg (193 million standard cubic meters) helium per year, the largest use (about 22% of the total in 2008) is in cryogenic applications, most of which involves cooling the superconducting magnets in medical MRI scanners. Other major uses (totalling to about 78% of use in 1996) were pressurizing and purging systems, maintenance of controlled atmospheres, and welding. Other uses by category were relatively minor fractions.

Controlled atmosphere

Helium MRI

Helium gas arc welding

helium leak detection

helium flight gas

helium diving gas

 

Product Specification

Name

Helium

CAS No.

7440-59-7

MF

He

EINECS No.

231-168-5

 

Index

Packaging Detail

Grade

High Purity Helium, 99.999%, 5N

Impurity

Content

Oxygen

≤ 1 ppmv

Nitrogen

≤ 4 ppmv

H2O

≤ 2 ppmv

CO

≤ 0.5 ppmv

CO2

≤ 0.5 ppmv

Cylinder

GB5099, 40L

Valve

QF

WP

14Mpa, 5.23 M3

G.W

55 kg

N.W

0.5 kg

L x W x H

0.22mx0.22mx1.5m

 

Physical Date

Molecular Weight

4 g/mole

Boiling Point

-452.1oF (-268.9oC)

Specific Volume

100 ft3/lbs at 70oF

Vapor Pressure   @70oF (21.1oC): Above the critical temp. of -450.3oF (-268oC)

Liquid Density at Boiling Point

7.8 lb/ft3 (125kg/m3)

Gas Density at 70oF. 1 atm

0.0103 lb/ft3 (0.1650kg/m3)

Solubility In Water

Negligible

Freezing Point

-456.5oF (-271.3oC)

Evaporation Rate

N/A (Gas)

Specific Gravity (Air=1)

@70oF (21.1oC) = 0.138

Appearance And Odor    Colorless, odorless gas.



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