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S2631230

Allene , ≥95% , 463-49-0

Synonym(s):
Propadiene

CAS NO.:463-49-0

Empirical Formula: C3H4

Molecular Weight: 40.06

MDL number: MFCD00008566

EINECS: 207-335-3

Update time: 2022-07-08

PRODUCT Properties

Melting point: −136 °C(lit.)
Boiling point: -34 °C
Density  0,647 g/cm3
vapor density  1.42 (20 °C, vs air)
vapor pressure  6795 mm Hg ( 21 °C)
refractive index  1.4169
storage temp.  2-8°C
form  Gasunderpressure:liquefiedgas
explosive limit 13%
BRN  1730774
CAS DataBase Reference 463-49-0(CAS DataBase Reference)
EPA Substance Registry System Propadiene (463-49-0)

Description and Uses

MAPP Gas is a stabilized mixture of methylacetylene and propadiene. Alkane and alkene hydrocarbons are added as stabilizers. The stabilizers serve to render the methylacetylene and propadiene shock insensitive and to ensure that their concentrations remain nearly uniform at all times during vaporization of the mixture.
MAPP Gas is transported and stored as a liquid under its own vapor pressure. Its transportation, storage, and handling characteristics are the same as those of liquefied petroleum gas. It has a characteristic odor detectable at concentrations as low as 100 ppm in air. Stabilized liquefied MAPP Gas and MAPP Gas vapor are insensitive to shock.
Its vapor is not subject to exothermic decomposition from a 100-J energy source to 419°F (215°C) and 285 psig (1970 kPa). With a probe temperature of 825°F (441°C), the gas is stable up to 600°F (316°C) and 1100 psig (7580 kPa). Thus, it can be safely used up to full cylinder pressure.

MAPP Gas is primarily used as an industrial fuel gas for oxygen-fuel gas cutting, welding, heating, wire metallizing, flame hardening, soldering, and brazing. Small amounts are used for other diverse purposes such as mold smoking, simulation of weapons firing, flame polishing of plastics, special effects, and furnace atmospheres.

Safety

Symbol(GHS) 
GHS02,GHS04
Signal word  Danger
Hazard statements  H220-H280
Precautionary statements  P210-P377-P381-P410+P403
Hazard Codes  F+,F
Risk Statements  12
Safety Statements  9-16-33
RIDADR  UN 2200 2.1
WGK Germany  3
17
Hazard Note  Flammable
TSCA  T
DOT Classification 2.1 (Flammable gas)
HazardClass  2.1
HS Code  2901290000
Hazardous Substances Data 463-49-0(Hazardous Substances Data)

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