Methane Gas Specifications - SpecAir Specialty Gases UN1971

METHANE Specifications
Scientific Grade - Min. Purity 99.9995% O2 <0.5 ppm H2O <2 ppm N2 <2 ppm H2 <0.1 ppm Other HC <0.1 ppm Research Grade - Min. Purity 99.995% Air <20 ppm C2H4 <1 ppm CO <1 ppm H2O <5 ppm CO2 <1 ppm C2H6 <20 ppm Ultra High Purity - Min. Purity 99.99% C.P. Grade - Min. Purity 99% Technical Grade - Min. Purity 98% Commercial Grade (Natural Gas) - Min. Purity 93%
METHANE GAS INFORMATION
SYMBOL	CH4
MOLECULAR WEIGHT	16.043
SPECIFIC VOLUME	23.80 CF / lb
FLAMMABILITY LIMITS	5.0-15.46% in Air
PURITY	Contact Customer Service
CGA VALVE
Material Safety Data Sheet	Methane MSDS

METHANE SHIPPING INFORMATION
DOT PROPER SHIPPING NAME	Methane, compressed
IATA PROPER SHIPPING NAME
HAZARD CLASS	2.1
ID NUMBER	UN1971
LABELS	* F
CAS NUMBER	74-82-8
SCHEDULE B NUMBER	2711.29.0000
ZONE

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

Methane Mixture Specifications

Methane (CH4)
Concentration	Cylinder Size	CGA Connection	Recommended Equipment
In Air, Ultra Zero* 1 ppm - 2.5% Primary, Certified and 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 Argon 1 ppm - 49.9% Primary*, Certified and Batch See also Electron Capture Mixtures and Nuclear Counter Mixtures	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 Helium 1 ppm - 49.9% Primary*, Certified and Batch	150AL 80AL 33AL	350 350 350	Single Stage Regulator: HPS 500 Two-Stage Regulator: HPT 500
In Helium 1 ppm - 49.9% Primary*, Certified and Batch	Enviro-Cyl/ One-Timers	180/C-10	CGA 180: LB150 C-10: PR 160 or PR 190

In Hydrogen 1 ppm - 49.9% Primary*, Certified and 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 - 49.9% Primary, Certified and 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
Batch analysis available for concentrations 0.1% or higher Primary analysis available for concentrations 5ppm or higher **Some concentrations available as EPA Protocol Mixtures
Technical Data
Cylinder Pressure: DOT Class: In Hydrogen All Other; CH4 <5.0 % All Other; CH4 >5.0 % DOT Label In Hydrogen All Other; CH4 <5.0 % All Other; CH4 >5.0 % Id No.: In Hydrogen All Other; CH4 <5.0 % All Other; CH4 >5.0 %		2000 PSIG (Pressure and contents reduced at higher concentrations) 2.1 2.2 2.1 Flammable Gas Nonflammable Gas Flammable Gas UN1954 UN1956 UN1954

METHANE Specifications