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Hydrogen Sulfide Information

Hydrogen Sulfide

Other Names

Hydrosulfuric Acid; Sulfane; Dihydrogen Monosulfide

Chemical Formula

H2S

CAS Number

7783 – 06 – 4

Industry Uses

Chemical Laboratories; Metallurgy

Health Risks

Irritation of eyes and mucous membranes; Convulsions; Headaches, Dizziness

Vapor Pressure

17.6 atm

Water Solubility

Insoluble

Flammability

Flammable

Odor

Rotten Eggs

Hydrogen Sulfide MSDS

What is Hydrogen Sulfide?

Hydrogen Sulfide is colorless, has an odor of rotten eggs, and is highly toxic. Although the odor is very pungent at first, it quickly deadens the sense of smell, so victims may be unaware of its presence until it's too late. Hydrogen Sulfide is flammable, naturally occurring in crude petroleum, natural gas, volcanic gas, and hot springs. It is sometimes called “sewer gas”. Biogas generators may release up to 1% hydrogen sulfide in gas streams. Any process that breaks down organic material without oxygen has the potential to create high levels of hydrogen sulfide. If heated under pressure it will explode. It is produced in the human body by bacteria in the mouth and gastrointestinal tract. Hydrogen Sulfide is very toxic to aquatic life and leaves long-lasting damage.

Hydrogen Sulfide Exposure and Health Risks

Hydrogen Sulfide is toxic and flammable. It is an irritant, causing inflammation and irritation to eyes and respiratory system. Eye pain, conjunctivitis, photophobia, corneal vesiculation and lacrimation (discharge of tears) are effects of Hydrogen Sulfide on the eyes. Dermal burns can result from direct contact. Inhalation can cause dizziness, headaches, insomnia, and fatigue. Gastrointestinal disturbances may occur as well. Hydrogen sulfide causes serious damage to organs and central nervous system, and it can be fatal if inhaled.

Regulations

The table below summarizes the most-recent exposure limits.

Limit/Level

Type

Organization

0.33 ppm

AEGL-1 (8 hrs)

EPA

17 ppm

AEGL-2 (8 hrs)

EPA

31 ppm

AEGL-3 (8 hrs)

EPA

20 ppm

C (10 min)

OSHA

10 ppm

C (10 min)

NIOSH

Sources: NIOSH, OSHA, EPA

Measuring Hydrogen Sulfide

Hydrogen Sulfide concentration in the air can be measured in units of parts per million (ppm). Many of our products have digital communication capabilities for easy monitoring and control. We carry portable and fixed hydrogen sulfide monitors and kits. All of our hydrogen sulfide products can be viewed HERE.

Contact us for help choosing the right monitor for your application

 

Our full line of Hydrogen Sulfide (H2S) monitoring solutions are shown below

Pocket H2S, Model 300

Small, lightweight, and low cost.  Perfect for handheld personnel safety.

0-50 PPM range with integrated audible alarms in a package that weighs only 1 oz, makes this a perfect monitor for daily use.

Pocket H2S Sensor

GasAlert H2S

Rugged and versatile.  This feature rich sensor is capable, with integrated audible alarm and datalogging capabilities.

0-100 or 0-500 ppm range and intrinsically safe design make this a great monitor for personnel safety in hazardous environments.

GasAlert Extreme CO (GAXT-M-DL)

C-16 PortaSens

The C-16 allows for multiple gas sensors go be purchased and used.  With a fast response time, and features such as data logging, alarms, and min,max,avg recording, this is a great all around gas sensor for most every use.

In the C-16 page choose the sensor that is right for you. H2S sensors are available in a 0-50 or 0-500 ppm range.  Also choose other sensors that may be right for you.

The sensors used in the C-16 are also directly interchangeable with either the F-12, or D-12 toxic gas transmitters.  This makes the C-16 the perfect handheld device to use along with wall mounted toxic gas transmitters.

C-16 PortaSens II Gas Detector

Series-200 Monitor

The Series-200 Monitor Hydrogen Sulfide (H2S) heads are available in 0-10 ppm or 0-100 ppm ranges using a Gas Sensitive Electrochemical technology (GSE).

The Series-200 can be configured with a variety of other gas detecting heads to provide you with additional flexibility.

The Series-200 boasts:

  • audible alarm
  • min/max/avg recording
Aeroqual Series 200 with Sensor Head

Series-300 Monitor

The Series-300 Monitor Hydrogen Sulfide (H2S) heads are available in 0-10 ppm or 0-100 ppm ranges using a Gas Sensitive Electrochemical technology (GSE).

The Series-300 can be configured with a variety of other gas detecting heads to provide you with additional flexibility.

The Series-300 boasts:

  • audible alarm
  • min/max/avg recording
  • internal relays for external control of devices or alarms

Aeroqual Series 200 with Sensor Head

Series-500 Monitor

The Series-500 Monitor Hydrogen Sulfide (H2S) heads are available in 0-10 ppm or 0-100 ppm ranges using a Gas Sensitive Electrochemical technology (GSE).

The Series-500 can be configured with a variety of other gas detecting heads to provide you with additional flexibility.

The Series-500 boasts:

  • audible alarm
  • min/max/avg recording
  • internal relays for external control of devices or alarms
  • integrated data logging with industry leading desktop software

H2S monitor with datalogging

Series-900 Controller

The Series-900 Controller Hydrogen Sulfide (H2S) heads are available in 0-10 ppm or 0-100 ppm ranges using a Gas Sensitive Electrochemical technology (GSE).

The Series-900 can be configured with a variety of other gas detecting heads to provide you with additional flexibility.

The Series-900 boasts:

  • Versatile controller with 4-20mA output and RS-485 output
  • 2 alarm relays and 2 control relays that are user settable

S900 Aeroqual hydrogen sulfide monitor

F-12 Toxic Gas Detector

The F-12 allows for multiple gas sensors go be purchased and used.  The F-12 is configurable with options such as and intrinsically safe enclosure, remote mounted sensors and others.

In the F-12 page choose the sensor that is right for you. Hydrogen Sulfide sensor is available in a 0-50, or 0-500 ppm range.  Also choose other sensors that may be right for you.

ATI F12 Hydrogen Sulfide Monitor

D-12 Toxic Gas Transmitter

The D-12 allows for multiple gas sensors go be purchased and used.  The D-12 is designed for operation in hazardous areas. The cast aluminum housing for the D12 transmitter is rated for Class 1, Division 1, Group B, C, D locations and is UL, FM, and CSA certified.

In the D-12 page choose the sensor that is right for you. Hydrogen Sulfide sensors are available in a 0-50 or 0-500 ppm range.  Also choose other sensors that may be right for you.

D-12 Toxic Gas Detector
 

 

Contact us for help choosing the right H2S Sensor for your application


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