HIDROGEN SULPHIDE

PHYSICAL PROPERTIES

Hydrogen Sulfide, at room temperature is a colourless, flammable toxic gas with a strong odour, similar to that of rotten eggs.

Molecolar
Weight
Relative Density
@101.325 kPa
@25C (Air=1)

EXPOSURE LIMITS

TWAEV
Time-Weighted Average Exposure Values
STEV
Short-Term Exposure Values

BLOOD SATURATION % CARBOXYHEMOGLOBIN

At low concentrations Hydrogen Sulphide will irritate the eyes and upper respiratory tract, and may cause pulmonary edema

 in a prolonged exposure.

20-50 ppm

600 ppm

Higher concentration will produce more serious effects including headache, dizziness and possibly bronchial pneumonia. Inhalation of concentrations above 600ppm can be fatal within 30 minutes of exposure or less.

 

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