Isobutylene Gas Specifications - SpecAir Specialty Gases UN1055

ISOBUTYLENE Specifications
C.P. Grade - Min. Purity 99.0% (Liquid Phase)
ISOBUTYLENE GAS INFORMATION
SYMBOL	C4H8
MOLECULAR WEIGHT	56.11
SPECIFIC VOLUME	6.68 CF / lb
FLAMMABILITY LIMITS	1.8-9.6% in Air
PURITY	Contact Customer Service
CGA VALVE	510
Material Safety Data Sheet	Isobutylene MSDS

ISOBUTYLENE SHIPPING INFORMATION
DOT PROPER SHIPPING NAME	Isobutylene
IATA PROPER SHIPPING NAME
HAZARD CLASS	2.1
ID NUMBER	UN1055
LABELS	* F
CAS NUMBER	115-11-7
SCHEDULE B NUMBER
ZONE

* N = Non-Flammable Gas * F = Flammable Gas * P = Poison-Inhalation Hazard	* O = Oxidizer * C = Corrosive
This information is intended for reference purposes only.

Isobutylene Mixture Specifications

Isobutylene (C4H8)
Concentration	Cylinder Size	CGA Connection	Recommended Equipment
In Air, Ultra Zero 1 ppm - 9000 ppm Primary, Certified & Batch*	150AL 80AL 33AL	590 590 590	Single Stage Regulator: HPS 500 Two-Stage Regulator: HPT 500
	Enviro-Cyl/ One-Timers	180/C-10	CGA 180: LB150 C-10: PR 160 or PR 190

In Helium 1 ppm - 1.5 % Primary, Certified & Batch*	150AL 80AL 33AL	350 350 350	Single Stage Regulator: HPS 500 Two-Stage Regulator: HPT 500
	Enviro-Cyl/ One-Timers	180/C-10	CGA 180: LB150 C-10: PR 160 or PR 190

In Nitrogen 1 ppm - 1.5% Primary, Certified & Batch*	150AL 80AL 33AL	350 350 350	Single Stage Regulator: HPS 500 Two-Stage Regulator: HPT 500
	Enviro-Cyl/ One-Timers	180/C-10	CGA 180: LB150 C-10: PR 160 or PR 190
Primary analysis available for concentrations 0.1% or higher *Batch analysis available for concentrations 5 ppm or higher
Technical Data
Cylinder Pressure: DOT Class DOT Label ID No.		2000 PSIG (Pressure & contents reduced at higher concentrations) 2.2 Nonflammable Gas UN1956

ISOBUTYLENE Specifications