{"id":2576,"date":"2025-09-18T09:00:00","date_gmt":"2025-09-18T14:00:00","guid":{"rendered":"https:\/\/www.gas-sensing.com\/news\/?p=2576"},"modified":"2025-09-16T11:25:41","modified_gmt":"2025-09-16T16:25:41","slug":"hydrogen-sulfide-h%e2%82%82s","status":"publish","type":"post","link":"https:\/\/www.gas-sensing.com\/news\/hydrogen-sulfide-h%e2%82%82s\/","title":{"rendered":"Hydrogen Sulfide (H\u2082S)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Other Names<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hydrosulfuric Acid<\/li>\n\n\n\n<li>Sulfane<\/li>\n\n\n\n<li>Dihydrogen Monosulfide<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chemical Formula:<\/strong> H\u2082S<br><strong>CAS Number:<\/strong> 7783-06-4<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industry Uses<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Chemical Laboratories<\/li>\n\n\n\n<li>Metallurgy<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Physical &amp; Chemical Properties<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vapor Pressure:<\/strong> 17.6 atm<\/li>\n\n\n\n<li><strong>Water Solubility:<\/strong> Insoluble<\/li>\n\n\n\n<li><strong>Flammability:<\/strong> Flammable<\/li>\n\n\n\n<li><strong>Odor:<\/strong> Rotten Eggs<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">What is Hydrogen Sulfide?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hydrogen Sulfide (H\u2082S) is a <strong>colorless, highly toxic, flammable gas<\/strong> with the distinct smell of rotten eggs. Although its odor is very pungent at first, it rapidly deadens the sense of smell, making it especially dangerous\u2014exposure can occur without warning.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u2082S occurs naturally in <strong>crude petroleum, natural gas, volcanic emissions, and hot springs.<\/strong> It is also commonly known as <em>\u201csewer gas\u201d<\/em> because it is produced during the anaerobic decomposition of organic matter. Biogas generators may release up to 1% hydrogen sulfide in gas streams, and any process that breaks down organic material without oxygen has the potential to create dangerously high levels.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hydrogen sulfide is also produced in small amounts within the human body by bacteria in the mouth and gastrointestinal tract. However, in the environment, it is extremely toxic to aquatic life and causes long-lasting ecological harm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If heated under pressure, H\u2082S can <strong>explode<\/strong>, further adding to its hazards.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Hydrogen Sulfide Exposure and Health Risks<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Exposure to hydrogen sulfide can be life-threatening. It is both <strong>toxic<\/strong> and <strong>flammable<\/strong>, causing harmful effects even at low concentrations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Health Effects<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Eyes &amp; Mucous Membranes:<\/strong> Irritation, conjunctivitis, eye pain, photophobia, corneal damage, and excessive tearing.<\/li>\n\n\n\n<li><strong>Respiratory System:<\/strong> Inflammation, coughing, difficulty breathing.<\/li>\n\n\n\n<li><strong>Skin:<\/strong> Dermal burns on contact.<\/li>\n\n\n\n<li><strong>Central Nervous System:<\/strong> Dizziness, headaches, fatigue, insomnia, and convulsions.<\/li>\n\n\n\n<li><strong>Other Symptoms:<\/strong> Gastrointestinal disturbances.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Severe exposures<\/strong> can result in organ damage, nervous system failure, or death from respiratory paralysis.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Regulations and Exposure Limits<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Limit\/Level<\/th><th>Type<\/th><th>Organization<\/th><\/tr><\/thead><tbody><tr><td>0.33 ppm<\/td><td>AEGL-1 (8 hrs)<\/td><td>EPA<\/td><\/tr><tr><td>17 ppm<\/td><td>AEGL-2 (8 hrs)<\/td><td>EPA<\/td><\/tr><tr><td>31 ppm<\/td><td>AEGL-3 (8 hrs)<\/td><td>EPA<\/td><\/tr><tr><td>20 ppm<\/td><td>Ceiling (10 min)<\/td><td>OSHA<\/td><\/tr><tr><td>10 ppm<\/td><td>Ceiling (10 min)<\/td><td>NIOSH<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Measuring Hydrogen Sulfide<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hydrogen sulfide concentration in the air is typically measured in <strong>parts per million (ppm).<\/strong> Reliable detection is critical due to the gas\u2019s toxicity and odor-masking effect.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We carry a full line of <strong>portable and fixed hydrogen sulfide monitors and test kits<\/strong>, many with <strong>digital communication capabilities<\/strong> for easy data logging, monitoring, and control.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">View our complete selection of Hydrogen Sulfide products here: <a href=\"https:\/\/www.gas-sensing.com\/support\/gas-information\/hydrogen-sulfide-sensors.html\" data-type=\"link\" data-id=\"https:\/\/www.gas-sensing.com\/support\/gas-information\/hydrogen-sulfide-sensors.html\">https:\/\/www.gas-sensing.com\/support\/gas-information\/hydrogen-sulfide-sensors.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can find more information here: <a href=\"https:\/\/www.gas-sensing.com\/information\/hydrogen_sulfide\" data-type=\"link\" data-id=\"https:\/\/www.gas-sensing.com\/information\/hydrogen_sulfide\">https:\/\/www.gas-sensing.com\/information\/hydrogen_sulfide<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>Other Names Chemical Formula: H\u2082SCAS Number: 7783-06-4 Industry Uses Physical &amp; Chemical Properties What is Hydrogen Sulfide? Hydrogen Sulfide (H\u2082S) is a colorless, highly toxic, [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":2577,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[30],"tags":[22,25,34],"class_list":["post-2576","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hydrogen-sulfide","tag-gas-monitoring","tag-gas-safety","tag-gas-sensing-product"],"_links":{"self":[{"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/posts\/2576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/comments?post=2576"}],"version-history":[{"count":1,"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/posts\/2576\/revisions"}],"predecessor-version":[{"id":2578,"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/posts\/2576\/revisions\/2578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/media\/2577"}],"wp:attachment":[{"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/media?parent=2576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/categories?post=2576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gas-sensing.com\/news\/wp-json\/wp\/v2\/tags?post=2576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}