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Errrrr..............
NO! not allowed, CO2 is a hazchem, you cannot supply that under the description of "air" in the UK, and I would imagine the EU?...........totally illegal?Quote:
Yes it is, its liquid CO2
An "air duster", MUST contain compressed air, not carbon dioxide.............
Imagine you go to a garage and fill your tyres (tires) with CO2 rather than air?
:eek:
I did a little google and no they do not have CO2 in them. Air dusters, or at least the ones i looked at, contain a chemical called Difluoroethane, and yes it is compressed into a liquid. Here is a little info on the chem
General
Synonyms: difluoroethane, Freon 152, Freon 152A, halocarbon 152A
Use: aerosol propellant, refrigerant (use now largely discontinued)
Molecular formula: C2H4F2
CAS No: 75-37-6
EC No: 200-866-1
Physical data
Appearance: liquefied colourless gas under pressure
Melting point: -117 C
Boiling point: -25 C
Vapour density:
Vapour pressure:
Specific gravity: 1.012 g/cm3 at 26 C
Flash point:
Explosion limits:
Autoignition temperature:
Critical Temperature: 113.7 C
Critical Pressure 44.9 atm.
and after a little more looking i found that the di form of this chem is not as safe to use, and is actually flamable even though it is in air dusters, but the tetra is a lot more common and stable
tetrafluoroethane
General
Synonyms: HFC 134a, fluorocarbon 134a, unsymmetric tetrafluoroethane, norflurane, histofreeze 2000
Molecular formula: C2H2F4
CAS No: 811-97-2
EC No: 212-377-0
Physical data
Appearance: colourless gas or cryogenic liquid with an ether-like odour
Melting point: -101 C
Boiling point: -26 C
Vapour density:
Vapour pressure:
Density (g cm-3):
Flash point:
Explosion limits:
Autoignition temperature:
Water solubility: insoluble
Stability
Stable. May cause damage to the atmosphere. Incompatible with active metals, strong oxidizing agents.
Toxicology
May be harmful by inhalation. Chronic exposure may cause reproductive damage. High levels may cause CNS damage. Contact with liquid may cause skin burns. Asphyxiant at high concentration.
Toxicity data
(The meaning of any abbreviations which appear in this section is given here.)
IHL-RAT LC50 > 500,000 ppm
IHL-RAT LC50 567,000 ppm
Risk phrases
(The meaning of any risk phrases which appear in this section is given here.)
Transport information
Non-hazardous for air, sea and road freight.
Environmental Information
Degrades extremely slowly in the environment.
Personal protection
Adequate ventilation. Protective gloves if handling cryogenic liquid.
The stuff i have is the tetra.... something fun to do, other thatn turn it upside down and spray your coworkers arses till they yell and chase you down, is to take a small test tube like container and spray the crap upside down slowly into it.
This will build up the liquid we are all discussing and then you can drop crap in it to get it cold or throw the whole thing at someone. The stuff will bubble the entire time its in it too
***WARNING*** this crap can cause frostbite etc so try to avoid direct skin contact.