Explosive materials when wet, what items are flammable when wet

Potassium, calcium, rubidium, cesium.

Sodium, lithium, and magnesium react violently, but they do not necessarily burn.

There are other mixtures. For example, in World War II, an incendiary bomb used by Allied spies. It is to use the lead skin to put concentrated sulfuric acid, sugar, and water in a "cigar", and the concentrated sulfuric acid corrodes through the lead skin, touches the water, releases strong heat, and then ignites the sugar.

Definition of flammable substances when wet.

Wet flammable materials refer to articles that have a violent chemical reaction and release a large amount of flammable gas and heat when exposed to water or moisture. Some do not need an open flame, that is, they can burn or **.

Wet flammable items: metal lithium metal sodium metal potassium potassium alloy potassium sodium alloy sodium potassium alloy sodium potassium alloy calcium metal calcium alloy such as: copper-calcium alloy rubidium metal cesium metal strontium metal barium metal barium alloy alkali metal amalgam such as:

Potassium Amalgam Alkaline Earth Metal Amalgam Magnesium Powder Magnesium Alloy Powder Such as: Cerium Magnesium Alloy Powder Magnesium Aluminum Powder Aluminum Powder [Uncoated] Aluminum Silver Powder Zinc Dust Cerium [Powder, Chips] Lithium Hydride Sodium Hydride Potassium Hydride Magnesium Hydride Magnesium Dihydride Calcium Hydride Aluminum Hydride Lithium Aluminum Tetrahydride Sodium Aluminum Hydride Lithium Nitride Calcium Carbide Calcium Carbide Calcium Silicon Lithium Silicon Lithium Iron Iron Aluminum [Powdered] Magnesium Silicide Sodium Phosphide Potassium Phosphide Calcium Phosphide Tricalcium Phosphide Magnesium Phosphide Magnesium Phosphide Magnesium Phosphide Strontium phosphide Tin phosphide Pentasulfide (II) phosphorus (chemical) lithium amino (chemical) calcium (chemical) lithium borohydride lithium hydroboride sodium borohydride sodium hydroboride sodium hydroboride potassium borohydride potassium hydroboride sodium dithionite 1) insurance powder; Sodium low sulfite, boron trifluoride methyl ether complex, magnesium methyl bromide [immersed in ether], trichlorosilane, siliconform; Silicochloroform Methyl dichlorosilane Dichloromethylsilane Ethyl dichlorosilane Reference**.

Answer: According to the relevant provisions of the Fire Protection Law of the People's Republic of China, "flammable and explosive dangerous goods" include civil ** articles and compressed gases and liquefied gases with combustion ** as the main characteristic in the national standard "List of Dangerous Goods" (GB12268 90); explosive liquids; flammable solids, spontaneously combustible materials and flammable materials when wet; oxidizing agents and organic peroxidants; Some flammable and explosive chemicals in poisons and corrosives. The specific name of the product is listed in the "Regulations of the People's Republic of China on the Administration of Civil Articles" and the "List of Chemical Dangerous Substances Fire Safety Supervision and Management" compiled by the Ministry of Public Security.

Reactive metals such as Na and K, as well as oxides and peroxides.

Active metals and alloys, metal hydrides, borohydrides, and metal powders react violently with moisture to release H2 and a large amount of heat, resulting in H2 combustion.

Explanation (1) Wet and flammable materials refer to articles that have a violent chemical reaction and release a large amount of flammable gas and heat when exposed to water or moisture. Some do not need an open flame, that is, they can be burned or **, and some wet flammable materials are flammable or placed in flammable liquids (such as metal potassium, sodium, etc. are immersed in kerosene to isolate the air), and they are also very dangerous when exposed to fire and heat sources.

2) In addition, some wet and flammable materials are also corrosive or toxic, such as boron hydrogen compounds are highly toxic, which should be noted. Physical and chemical properties: yellow-brown or black hard lump, its crystalline section is purple or gray.

density water = 1). When exposed to air, it is easy to absorb moisture and lose its luster and turn gray, and it emits acetylene gas and deteriorates and fails. It is used to produce acetylene gas, and is also used in organic synthesis, oxyylene welding, etc.

3) Dangerous characteristics: acetylene gas is decomposed by the interaction with water, because this product often contains impurities such as phosphorus and sulfur, and the reaction with water will also release phosphine and hydrogen sulfide, when the phosphine content exceeds and the hydrogen sulfide content exceeds, it is easy to cause spontaneous combustion. Acetylene gas can be in contact with silver, copper and other metals to produce highly sensitive substances.

Acetylene reacts violently with fluorine, chlorine and other gases and acids, which can cause combustion**.

Wet and flammable items:

a.Active metals and alloys, metal hydrides, borohydrides, and metal powders react violently with moisture to release H2 and a large amount of heat, resulting in H2 combustion.

b.Metal carbides, organometallic compounds such as K4C, Na4C, Ca2C, Al4C3, etc., will release C2H2, CH4 and other substances that are very easy to ignite when exposed to temperature;

c.The reaction of metal phosphide with water will produce flammable, explosive and toxic pH3;

d.Metal sulfides produce toxic and flammable H2S gas when wet;

e.Quicklime, anhydrous aluminum chloride, sodium peroxide, caustic soda, oleum acid, chlorosulfonic acid, phosphorus trichloride, etc., will release a lot of heat when exposed to water, which will ignite nearby combustibles.

The dangerous characteristics of flammable materials when wet are mainly manifested in the aspects of Wukai ().

a. Flammable and explosive cover stupidity when wet (correct answer).

b. In case of oxidant and acid ignition, the risk of spontaneous combustion (correct answer) c

d. Electrification.

e. Many flammable substances when wet have a certain toxicity (correct answer).

Wet flammable materials refer to articles that have a violent chemical reaction and release a large amount of flammable gas and heat when they are sold in water or when they are damp. Some do not need an open flame, that is, they can burn or **.