نسیم صبح فردا

What is hydrogen sulfide?

  • Hydrogen sulfide gas has a very strong odor similar to rotten eggs.
  • Hydrogen sulfide, or sulfide ion, acts as a catalyst in the absorption of hydrogen on the surface of metals, leading to the rapid brittleness of metals.
  • In areas where the air is not flowing, leaking very small amounts of hydrogen sulfide can be very dangerous.
  • If hydrogen sulfide comes in contact with any part of the body or eyes, be sure to rinse the area with plenty of clean water for 15 minutes.

Available grades:

  • Hydrogen sulfide is present only in the liquid phase with a purity of %99.5 and %99.99.

Tanks and maintenance:

  • A group of cylinders is suitable for charging hydrogen sulfide.
  • The maximum weight of the cylinder charge is %62.5 of the weight of the cylinder intake.
  • Hydrogen sulfide is also transported and stored in special tanks in bulk.

Compatible and incompatible materials:

  1. Anhydrous hydrogen sulfide under pressure and ambient temperature are compatible with carbon steel and ferrous iron.
  2. Hydrogen sulfide itself isn’t corrosive to Steel.
  3. Substances such as impurities, pH, specific abrasion conditions, or mechanical and thermal stresses on metals can cause severe corrosion.
  4. Teflon, VITON, and KEL-F are polymers compatible with hydrogen sulfide.

Molecular Weight 34.08
steam pressure 1579 K. Pa @ 15.6 0C
Gas density 26.55 Kg/m3 @ 15.6 0C and 1 atm
Latent heat of vaporization at 15.6 C 444.5 KJ/Kg
Specific heat capacity at the temperature of

15.00C  and 1 atm

CP=1.014 KJ/Kg.0C

CV=0.7643 KJ/Kg.0C

CP/CV=1.327

Critical temperature  100.5 0C
Critical pressure 9008 KPa(a)
Solubility in water 0.0292 vol.(gas)/Vol.(Water) at 200C and 1 atm
Boiling point -103.8  0C
Explosion / ignition range in air  Flammable Gas/Poison Gas

Material Compatibility of Hydrogen sulfide

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

Dangerous Products classification:

Dangerous Products Transport Information:

IATA IMDG DOT
UN 1053 UN 1053 UN 1053 UN NUMBER
Hydrogen sulfide Hydrogen sulfide Hydrogen sulfide UN SHIPPING NAME
2.1/2.3 2.1/2.3 2.1/2.3 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

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