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Time of Issue: Apr. 12, 2013 9:26:50
Period OF Validity: Apr. 12, 2014 9:26:50
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Application: Argon is a chemical element with symbol Ar and atomic number 18. It is in group 18 (noble gases) of the periodic table. Argon is the third most common gas in the Earth's atmosphere, at 0.93% (9,300 ppm), making it approximately 23.8 times as abundant as next most common atmospheric gas, carbon dioxide (390 ppm), and more than 500 times as abundant as the next most common noble gas, neon (18 ppm). Nearly all of this argon is radiogenic argon-40 derived from the decay of potassium-40 in the Earth's crust. In the universe, argon-36 is by far the most common argon isotope, being the preferred argon isotope produced by stellar nucleosynthesis in supernovas.

Product Specification

Name

Argon

CAS No.

7440-37-1

MF

Ar

EINECS No.

231-147-0

Grade

Purity

 Impurity content (ppm)

99.999%

O2≤2, N2 ≤5, H2 ≤1, THC≤2, H2O≤4

99.9993%

O2≤1 , N2 ≤4, H2 ≤1, THC≤1, H2O≤2.6

99.9996%

O2≤1, N2 ≤2, H2 ≤0.5, THC≤0.5, H2O≤1

Physical Date

Molecular Weight

39.95 g/mole

Boiling Point

-302.6oF (-185.9oC)

Specific Volume

9.70874 ft3/lbs at 70oF

Vapor Pressure   @70oF (21.1oC) = Above the critical temp. of -188.1oF (-122.3oC)

Liquid Density at Boiling Point

87 lb/ft3 (1393kg/m3)

Gas Density at 70oF. 1 atm

0.1034 lb/ft3 (1.656kg/m3)

Solubility In Water

Very slightly

Freezing Point

-308.9oF (-189.4oC)

Evaporation Rate

N/A (Gas)

Specific Gravity (Air=1)

@70oF (21.1oC) = 1.38

Appearance And Odor    Colorless, odorless gas.



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