Hydrogen sulfide (H2S)

 Malicious/very malicious

 Environmentally hazardous

 easily inflammatory

 

 

Poisonous with organisms

The poison effect is based to

  1. a destruction of the red blood coloring material and thus a paralysis of the intrazellulaeren respiration
  2. The H2S forms with contact with mucous membranes and fabric liquid in the eye, for which nose, the throat causes and in the lung of alkali sulfides the very strong irritation.
  3. The smaller, not-oxidized part can cause damage in the central and possibly also peripheral nervous system.

 

Effect:

 

 

starting from 20

ppm

during longer lasting effect: noxious for the cornea

around 100

ppm

attraction feeling at the mucous membranes of the eye and the respiratory system, salivation, cough stimulus

> 200

ppm

breath complaints, headache

> 300

ppm

nausea

around 500

ppm

powerlessness, behaviourness, swindle

> 500

ppm

cramps, unconsciousness

 

 

 

Toxic symptoms:

 

 

< 100

ppm

after several hours of impact time

> 100

ppm

within one hour

with 500

ppm

lethal in 30 min

at 1000

ppm

in few minutes

with 5000

ppm

deadly in few seconds

 

More details is in the instruction card to the UC NR. 1202: Illnesses by hydrogen sulfide describes.

 

 

Damage limit value with plants

approx. 10 mg/m³ with wood

effect in the plant: Slackening the sheets, color remains, sheets dries up.

 

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