Overview of the dangers of cadmium sulfide and first aid measures

Overview of the dangers of cadmium sulfide

Health hazards:

Acute poisoning: respiratory tract irritation after inhalation, chemical pneumonia, pulmonary edema; acute gastrointestinal irritation, nausea, vomiting, diarrhea, abdominal pain, tenesmus, general fatigue, muscle pain, collapse, etc. .

Chronic poisoning: The main manifestations of chronic poisoning are emphysema and renal damage (proteinuria); secondly, there are iron deficiency anemia, hyposmia, or loss of smell.

Environmental hazards: Harmful to the environment, can cause pollution to water bodies, dust pollution.

Explosion hazard: The product is non-flammable and irritating.

first-aid

Skin contact: Take off contaminated clothing and rinse with running water.

Eye contact: Lift the eyelid and rinse with running water or normal saline. Seek medical attention.

Inhalation: quickly leave the scene to a place with fresh air. Keep the airway unobstructed. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.

Ingestion: Drink enough warm water to induce vomiting. Seek medical attention.

Fire-fighting measures

Hazardous combustion products: sulfur oxide, hydrogen sulfide.

Fire fighting method: firefighters must wear full-body fire-proof and gas-proof clothing, and put out the fire in the upwind direction. When extinguishing a fire, move the container from the fire scene to an open place as much as possible.

Leakage emergency treatment

Emergency treatment: Isolate the leaked contaminated area and restrict access. It is recommended that emergency response personnel wear dust masks (full face masks) and gas-proof suits. Use a clean shovel to collect in a dry, clean, covered container, and transfer to a safe place. If there is a large amount of leakage, collect it for recycling or transport it to a waste disposal site for disposal.

Handling and storage

Operation precautions: airtight operation, pay attention to ventilation. Operators must undergo special training and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust respirators, chemical safety glasses, protective clothing and rubber gloves. Avoid generating dust. Avoid contact with oxidants and acids. When handling, load and unload with care to prevent damage to packaging and containers. Equipped with leakage emergency treatment equipment. Empty containers may be harmful residues.

Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. It should be stored separately from oxidants and acids, and avoid mixed storage. The storage area should be equipped with suitable materials to contain the leakage.

Cadmium Sulfate Preparation

Industrial preparation of cadmium ore is leached into cadmium sulfate with sulfuric acid, adjusted to pH=3.5 and precipitated with sodium sulfide, and the pH should not be too low.

Overview of cadmium sulfide CDS powder

Cadmium sulfide is an inorganic substance with the chemical formula CDS. There are two kinds of crystals, α type is lemon yellow powder, β type is orange-red powder. Slightly soluble in water, soluble in acid, slightly soluble in ammonia. Cadmium sulfide is a yellow solid. It has two different crystal structures in nature, namely, the rare minerals clinopyroxene and leucite, but in zinc ores with similar structures, sphalerite and wurtzite are usually used as impurity substituents, while zinc sphalerite And wurtzite is the main economic source of cadmium. As a compound that is easy to separate and purify, it is the main source of cadmium in all commercial applications. Its bright yellow color made it the pigment of the 18th century yellow paint "Cadmium Yellow".

Like zinc sulfide, cadmium sulfide has two crystal forms. More stable hexagonal wurtzite structure (found in greenstone mine) and cubic zinc mixed structure (found in Hollyite mine). In both forms, cadmium and sulfur atoms have four coordinates. There is also a high-pressure form with a NaCl rock salt structure.

Cadmium sulfide is a direct band gap semiconductor (energy gap 2.42 eV). Its band gap is close to the wavelength of visible light, giving it a colorful appearance.

Both polymorphs are piezoelectric, and the hexagon is also pyroelectric.

Cadmium sulfide crystals can be used as gain media for solid-state lasers.

For certain types of solar cells, cadmium sulfide can be used in combination with other layers in the form of thin films. Cadmium sulfide is also one of the first semiconductor materials used in thin film transistors (TFT).

The cadmium sulfide film can be a piezoelectric film and has been used as a transducer that can operate at frequencies in the GHz range.

Application of cadmium sulfide CDS powder

Cadmium sulfide CDS powder is called cadmium yellow and is used for the coloring of enamel, glass, ceramics, plastics and paint.

1. Cadmium yellow is widely used for the coloring of enamel, glass, ceramics, plastics and paint.

2. Used in paint and plastic industry, also used as electronic fluorescent material.

3. Cadmium yellow is suitable for coloring almost all resins, and is translucent in plastics.

4. As an excellent photographic developer, CDS nanoparticles can be used to detect cancer and other diseases and treat cancer cells.

5. CDS nanoparticles can be used to study the antibacterial and antifungal biological activities of various food-borne bacteria and fungi.

Nickel yellow is suitable for coloring almost all resins, and is translucent in plastics. Polyethylene contains light-colored cadmium yellow containing zinc sulfide, and the molding processing time should be appropriately extended. Cadmium sulfide is mainly used as a pigment because it has good thermal stability, light resistance, weather resistance, chemical resistance and high opacity. CDS Cadmium selenide is used in the manufacture of photoresistors, solar cells, photocatalysts, etc. The light-colored cadmium yellow containing zinc sulfide is used for polyethylene. Due to the presence of zinc sulfide, the molding processing time should be shortened as much as possible. It will promote the decomposition of polyethylene plastic and make it green. Cadmium yellow is not as stable as cadmium red indoors and is mainly used for indoor plastic products. Cadmium yellow should not be mixed with pigments containing copper or copper salts to avoid the formation of black copper sulfide or green copper sulfate. Cadmium yellow and blue pigments can be mixed together to get green.

Cadmium sulfide CDS powder price

The price of cadmium sulfide CDS powder will vary randomly according to factors such as production cost, transportation cost, international situation, exchange rate, market supply and demand of cadmium sulfide CDS powder. Tanji New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for cadmium sulfide CDS powder, please feel free to send an inquiry to get the latest price of cadmium sulfide CDS powder.

Cadmium Sulfide CDS Powder Supplier

As a global supplier of cadmium sulfide CdS powder, Tanji New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metals, etc.), high-purity targets and functional materials. Ceramics and structural equipment, and provide OEM services.