نسیم صبح فردا

What is Carbon Monoxide (CO)?

  • Carbon monoxide is a colorless, odorless, toxic, and flammable gas.
  • Liquid carbon monoxide is a cryogenic fluid.
  • Carbon monoxide can be found at -192 0C and atmospheric pressure.
  • Carbon monoxide is lethal in less than an hour if it has a concentration of more than 4% in the air.
  • Inhalation of high concentrations of this gas causes sudden and asymptomatic fainting.

Available grades:

  • Carbon monoxide is available in various grades from %98 to %99.99.
  • Existing grades of carbon monoxide are:

% 98.5,% 99,% 99.5,% 99.99


Tanks and maintenance:

  • Carbon monoxide is transported in cylinders, trailer tubes, and cryogenic bulk tanks.

Compatible and incompatible materials:

  1. Ordinary steels and metals are compatible with dry, sulfur-free carbon monoxide.
  2. The presence of carbon dioxide impurities and moisture in carbon monoxide increases the corrosive properties of these gases.
  3. High-pressure plant equipment is usually made of copper.
  4. Copper is resistant to carbon monoxide.
  5. High-grade chromium steels are highly resistant to corrosion of carbon monoxide with sulfur impurities.
  6. Butyl rubber and chloro-fluoro-carbon polymers such as VITON should not be used due to swelling in carbon monoxide.

Molecular Weight 28.01
steam pressure  760mmHg@ -191 0C
Gas density  1.161Kg/m3 @ 21.1 0C and 1 atm
Latent heat of vaporization at temperatures of -19100C and 1atm 215.8 KJ/Kg
Specific heat capacity at temperature

15.6 0C

At 1atm

CP=1.037 KJ/Kg.0C

CV=0.7394 KJ/Kg.0C

CP/CV=1.40

Critical temperature -140.2 0C
Critical pressure 4399 K.Pa
Solubility in water  0.035vol.(gas)/Vol.(Water) at 0 0C and 1 atm
Explosion / ignition range in air  Flammable Gas

Material Compatibility of Carbon monoxide

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

Viton® Buna-N Neoprene Polyurethane

O

Kalrez

GAS

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Classification of dangerous Products:

Dangerous Products Transport Information:

(For refrigerated liquid)   :UN 2201

IATA IMDG DOT
UN 1016 UN 1016 UN 1016 UN NUMBER
Carbon monoxide, compressed Carbon monoxide, compressed Carbon monoxide, compressed UN SHIPPING NAME
2.3 2.3 2.3 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

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