Page 85 - Praxair - Specialty Gases and Equipment Reference Guide

Helium

Cryogenic Liquids He

Transportation (M)SDS Reference
Information P-4600
UN Number: 1963 CAS Number
United States of America Canada Mexico
Shipping Name Helium, Helium, Helium, 7440 - 59 - 7 (R)
Refrigerated Refrigerated Refrigerated General Description
Liquid Liquid Liquid Colorless, odorless, nonflammable,
Hazard Class 2.2 2.2 2.2 cryogenic liquid and gas.
Label Nonflammable Nonflammable Nonflammable
Gas Gas Gas

Product/ Purity Part Cylinder O 2 N 2 H 2 O CO CO 2 THC H 2 Ne
Grade Number
5.0 99.999% HE LT LT60, LT100, 1 5 2 1 1 0.1 1 2
LT250, LT500
Concentrations given are ppm by volume unless otherwise specified.
Maximum ppm unless otherwise noted.

Cylinders

Cylinder Style Size Connection Pressure Volume Gross Weight
Type in (cm) psig (bar) lt lb (kg)
LT60 Portable Liquid Unit 51 x 24 (127.3 x 61) Coupling for 3/8" 1 (0.07) 60 209 (95)
or ½" transfer tube
LT100 Portable Liquid Unit 59 x 24 (147.9 x 61) Coupling for 3/8" 1 (0.07) 100 249 (113)
or ½" transfer tube
LT250 Portable Liquid Unit 67 x 32 (171.1 x 81.3) Coupling for 3/8" 1 (0.07) 250 526 (239)
or ½" transfer tube
LT500 Portable Liquid Unit 70 x 42 (179.3 x 106.7) Coupling for 3/8" 1 (0.07) 500 824 (374)
Section B – Pure Gases
or ½" transfer tube

Equipment Recommendations

i
See Sections F and G
for safety and technical
information.

Dewar Changeover System
(see page E •288)

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