Can sulfuric acid burn?

No, but when it absorbs water, it releases a large amount of heat, which can cause things with a low flash point to catch fire

This is because sulfuric acid has dangerous properties: it releases a large amount of heat when in contact with water, which can lead to boiling and splashing. Contact with flammable substances (such as benzene) and combustible substances (such as sugar, cellulose, etc.) can lead to violent reactions, and even ignition.

As for sulfuric acid, it can only be classified as a corrosive substance, but its reaction with metals can produce hydrogen gas.

But the MSDS for sulfuric acid has a section on the selection of fire extinguishing agents and fire suppression methods, right?

Sulfuric acid does not burn, but dilute sulfuric acid can corrode storage tanks and pipelines, potentially producing hydrogen gas

Sulfuric acid is a corrosive substance that does not burn; it has the dangerous property of releasing large amounts of heat when in contact with water, which can lead to boiling and splashing. Contact with flammable substances (such as benzene) and combustible substances (such as sugar, cellulose, etc.) can lead to violent reactions, and even ignition.

According to the revised 2007 edition of the United Nations Recommendations on the Transport of Dangerous Goods, sulfuric acid is classified as follows: 1830 sulfuric acid with an acid content of over 51%, 1831 fuming sulfuric acid, and 1832 sulfuric acid waste – all of which belong to Category 8 corrosive substances and do not burn at normal temperatures. Hazardous properties of fuming sulfuric acid: It releases a large amount of heat when in contact with water, and boiling splashing can occur. Contact with flammable substances (such as benzene) and combustible substances (such as sugar, cellulose, etc.) can lead to violent reactions, and even ignition. It reacts violently with calcium carbide, perchlorates, fulminates, nitrates, picrates, metal powders, etc., causing explosion or combustion. It can react with ordinary metals to release hydrogen, forming an explosive mixture with air. It has strong corrosivity and water absorption. Harmful combustion products: sulfur oxides, sulfuric acid. Hazardous properties: releases large amounts of heat upon contact with water, and can cause boiling and splashing. Contact with flammable substances (such as benzene) and combustible substances (such as sugar, cellulose, etc.) can lead to violent reactions, and even ignition. It reacts violently with calcium carbide, perchlorates, fulminates, nitrates, picrates, metal powders, etc., causing explosion or combustion. It has strong corrosivity and water absorption. Harmful combustion products: sulfur oxides. Based on the above description of the hazardous properties of sulfuric acid, it can be concluded that sulfuric acid poses a certain fire hazard! Therefore, the fire extinguishing methods must be indicated on the MSDS! This post was last edited by lyhh9024 on 2009-3-8 10:13.]

Sulfuric acid itself is non-flammable, but it is a strong oxidizing agent, especially concentrated sulfuric acid; when it comes into contact with other flammable or strongly reducing substances, combustion can occur

Finally I can reply again; there are so many restrictions here, haha. I work in safety management. Sulfuric acid is not flammable on its own, but it releases heat when it comes into contact with water, which can lead to ignition and a fire.

Sulfuric acid itself cannot burn, but it is a strong oxidizing agent. Concentrated sulfuric acid has the property of \"dehydrating\" organic substances by removing hydrogen and oxygen from them, which generates a large amount of heat; it also has the property of absorbing water, again releasing a large amount of heat in the process； Dilute sulfuric acid can react with the vast majority of metals to produce hydrogen, which is a flammable gas with a wide explosive range.

In my opinion, the requirement in the MSDS to specify fire extinguishing methods is not primarily due to the fire hazard posed by sulfuric acid, but rather to determine what fire extinguishing methods should be used in cases of fires involving sulfuric acid in order to prevent the fire from spreading or causing greater damage. Since sulfuric acid generates a large amount of heat when it comes into contact with water, water-based extinguishing agents cannot be used.

This is because sulfuric acid has dangerous properties: it releases a large amount of heat when in contact with water, which can lead to boiling and splashing. Contact with flammable substances (such as benzene) and combustible substances (such as sugar, cellulose, etc.) can lead to violent reactions, and even ignition. Furthermore, although sulfuric acid is non-flammable, in the event of a fire in an environment containing sulfuric acid, firefighting must be carried out in accordance with established procedures to prevent other accidents.

Hazardous properties of sulfuric acid: Releases large amounts of heat upon contact with water, and can cause boiling and splashing. Contact with flammable substances (such as benzene) and combustible substances (such as sugar, cellulose, etc.) can lead to violent reactions, and even ignition. It reacts violently with calcium carbide, perchlorates, fulminates, nitrates, picrates, metal powders, etc., causing explosion or combustion. It has strong corrosivity and water absorption. Harmful combustion products: sulfur dioxide. Fire extinguishing method: Firefighters must wear full-body acid- and alkali-resistant firefighting suits. Fire extinguishing agents: dry powder, carbon dioxide, sand. Avoid letting water flow onto the items, as this can generate a large amount of heat and cause splashing that may burn the skin. Fire and explosion hazards of sulfuric acid: This product acts as an accelerant; it is highly corrosive and irritating, and can cause burns to the human body.