Page 60 - Praxair - Specialty Gases and Equipment Solutions

C 4H 8
Isobutylene

Transportation (M)SDS Reference
Information P-4614
UN Number: 1055 CAS Number
United States of America Canada Mexico
Shipping Name Isobutylene Isobutylene Isobutylene 115 - 11 - 7
Hazard Class 2.1 2.1 2.1 General Description
Label Flammable Gas Flammable Gas Flammable Gas Colorless, flammable, liquefied gas
with a coal gas odor.

Product/Grade Purity Part Cylinder H 2 O Other Sulfur
Number THC
High Purity, 2.5 99.5 %wt IY 2.5HP HT, FX/FXS, 5 0.49% 1 wt
(liquid phase) LP5
Chemically Pure (CP), 99.0 %wt IY 2.0 HT, FX/FXS, 10 0.9% 1 wt
2.0 (liquid phase) LP5
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) CGA/DISS psig (bar) lb (kg) lb (kg)
HT Low Pressure Steel 55 x 29.8 (139.7 x 75.6) 510 24.3 (1.68) 530 (240.9) 845 (384.1)
FX/FXS Low Pressure Steel 45 x 15 (114.3 x 38.1) 510/555 24.3 (1.68) 125 (56.7) 200 (91) Section B – Pure Gases
LP5 Low Pressure Steel 17.7 x 12 (44.9 x 30.5) 510 24.3 (1.68) 25 (11.3) 43 (19.5)

Equipment Recommendations
High Purity, 2.5 3000 and 2000 series regulators
Chemically Pure 3000 and 2000 series regulators
(CP), 2.0

i

See Section D for additional
information on Praxair products for
the Hydrocarbon Processing Industry
(pages D•175 - D•184).
Contact your nearest Praxair location
or call 1-877-PRAXAIR for technical
information and assistance.
3002 Series – High Purity Regulators for
Non-Corrosive Service (see page E •251)

1-877-PRAXAIR www.praxairdirect.com B•59