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Sulfur, alias sulfur, is a non-metallic element, chemical formula S, light yellow brittle crystals or powders, with a special odor, insoluble in water, slightly soluble in ethanol, ether, easily soluble in carbon disulfide. As a flammable solid, sulfur is mainly used in the manufacture of dyes, pesticides, matches, gunpowder, rubber, rayon and so on. In the production, sulfur is often processed into a gum suspension for the prevention and control of diseases and insect pests, which is safe for people and animals, and it is not easy to cause drug damage to crops.

Alias: sulfur; brimstone

Appearance: Light yellow brittle crystals or powders

Chemical formula: S

Water soluble: Insoluble

Basic information:

Main uses

1, used for the prevention and control of diseases and insect pests, often processed into a gum suspension, it is safe for people, animals, not easy to make crops produce drug damage.

Sulfur is a multifunctional agent, in addition to bactericidal effect, it can also kill mites and insects. It is used to control powdery mildew and leaf of various crops, and the effective period can reach about half a month. The use of sulfur gum suspension in vegetables is mainly used to prevent and control melon powdery mildew, such as cucumbers, melons (melons), pumpkins, etc., and dilutes 50% sulfur gum suspension into 200-400 times liquid spray when used. Spraying once every 10 days or so, generally 2 times for mild onset and 3 times for those with severe disease.

2, sulfur is a mineral, it is acidic, warm, toxic, returned to the kidney and large intestine

The effect is that external use can kill insects and relieve itching. Can be used for scabies, eczema, skin itching. Some people also use it to burn smoke and cure the itching of the male scrotum or the female vulva; It can also be sprinkled with powder. It is now thought to produce hydrogen sulfide and pentasulfonic acid after contact with the skin, which can kill scabies, kill mold, and remove hair.

With the development of the transportation industry, radial tires will gradually replace slanted rubber tires. As a result, insoluble sulfur is even more striking as the main vulcanizing agent for the production of radial tires.

3. Disinfection and sterilization effect

Sublimation sulfur, also known as sulfur, comes into contact with the skin and tissues, and generates sulfides under the action of its secretions, which has the effect of softening the skin and killing bacteria. Sedimentation sulfur, also known as sulfur milk, can produce hydrogen sulfide and pentasulfonic acid under the action of its secretions in contact with the skin, which has the effect of sterilization and scabies.

4. Laxative effect

Sulfur itself is not active, after internal administration into sulfide and hydrogen sulfide, stimulate the gastrointestinal mucosa, make it excited peristalsis, resulting in diarrhea. This process requires the presence of an alkaline environment, E. coli, and especially lipolytic enzymes. In the intestinal content, when there are more fatty substances, it is easy to produce a large amount of hydrogen sulfide and cause diarrhea. Hydrogen sulfide concentrations in the air are too high, which can directly paralyze central nervous cells and lead to death.

Introduction to hazards

Hazard classification: flammable solids

Fire hazard: A

Sulfur is burned to produce sulfur dioxide, which is dissolved in water to form the compound sulfuric acid.

Health hazards: has a strong irritating effect on the eyes, skin, mucous membranes and respiratory tract.

First aid measures: skin contact, remove contaminated clothing, rinse the skin thoroughly with soapy water and water. Eye contact, lift the eyelids and rinse with running water or saline. Medical treatment. Inhale the poisoning, quickly leave the scene and go to a fresh place with fresh air.

Explosive combustion of complete decomposers: sulfur dioxide

Security Information

· Packaging Grade: III

· Hazard category: 4.1

· HS Code: 28020000

· Dangerous goods transport code: UN13504.1/PG3

· WGKGermany：1

· Hazard class code: R11

· Safety Note: S16-S26

· RTECS number: WS4250000

· Dangerous goods mark: F: Flammable

Performance characteristics:

Physicochemical properties

Sulfur element symbol S, atomic number 16, atomic weight 32.06, peripheral electron arrangement 3S23p4, located in the third cycle VI.A group, the main oxidation numbers -2, 0, +2, +4, +6. Atomic covalent radius 104 picometers, ion radius S-2184 picometers, S+630 picometers, *** ionization energy 1000kJ/mol, electronegativity 2.5.

Elemental sulfur is commonly known as sulfur, lumpy sulfur is a light yellow block crystal, the powder is a light yellow powder, has a special odor, can be soluble in carbon disulfide, insoluble in water. Industrial sulfur is yellow or light yellow, blocky, powdery, granular or flaky. There are a variety of allotropes, thimherical sulfur is also called rhomboid sulfur or α-sulfur, stable below 95.5 °C, density 2.1g / cm3, melting point 112.8 °C, boiling point 445 °C, brittle, not easy to conduct heat and electricity; monoclinic sulfur is also known as β-sulfur, stable above 95.5 °, density 1.96g / cm3; Elastic sulfur, also known as γ-sulfur, is amorphous, unstable, and easy to transform into α-sulfur. Hexagonal sulfur and monoclinic sulfur are composed of S8 ring molecules, liquid is composed of chain molecules, there are S8, S4, S2 and other molecules in the vapor, and the vapor is composed of S2 when it is above 1000 °C.

The chemical properties are relatively active, and can be combined with most elements such as oxygen, hydrogen, halogen (except iodine), metals, etc., to form ionic compounds or covalent compounds. Sulfur elements are both oxidizing and reducible. For example, sulfur and iron coheat to generate ferrous sulfide, carbon disulfide is generated with carbon at high temperature, sulfur hexafluoride is generated by fluoride at room temperature, and S2Cl2 is generated by chlorination when heated. Sulfur is mainly used in industry to make sulfuric acid, vulcanized rubber, black powder, matches, sulfides and so on. It is used in agriculture as an insecticide, such as lime sulfur mixture, and also in the preparation of medicines, such as sulfur ointment. Ancient people have known natural sulfur. Sulfur exists in nature in free and chemical states, and the compound states mainly include sulfides and sulfates. The abundance in the Earth's crust is 0.048%. It is made from natural sulfur ore, or by mixing pyrite and coke and burning it in limited air.

Sulfur burns in the air, a blue flame occurs when burning, sulfur dioxide is generated, and the powder is easily burned or even exploded when mixed with air or oxidant.

3FeS2 +12C+8O2 =Fe3O4 +12CO+6S

Technical parameters:

Color: Bright yellow

Shape: Granular / Fragmented

Purity: ≥99.5%

Acidity: ≤0.02%

Organic matter: ≤0.02%

Does not contain arsenic, selenium, tellurium impurities