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
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 |
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 |
| F | 17 |
| Hazard Note | Flammable |
| TSCA | T |
| DOT Classification | 2.1 (Flammable gas) |
| HazardClass | 2.1 |
| HS Code | 2901290000 |
