How to produce cadmium sulfide CDS powder?

 Cadmium sulfide can be prepared by precipitation from soluble cadmium (II) salts and sulfide ions. This reaction has been used for gravimetric analysis and qualitative inorganic analysis. 

Industrial cadmium mines are immersed in cadmium sulfate with sulfuric acid, adjusted to pH=3.5, and then precipitated with sodium sulfide, the pH value should not be too low.

The production of pigments usually includes the precipitation of CDS, washing of solid precipitates to remove soluble cadmium salts, then calcination (roasting) to convert them into hexagons, and then grinding to produce powder. When cadmium selenide sulfide is required, CdSe and CDS will co-precipitate, and cadmium selenide will be produced during the calcination step.

Cadmium sulfide is an inorganic substance with a chemical formula of CDS. It can be used to make fireworks, glass glazes, enamels, luminescent materials, and pigments. High-purity cadmium sulfide is a good semiconductor, has a strong photoelectric effect on visible light, and can be used to make photoelectric tubes and solar cells. It is prepared by passing hydrogen sulfide into the acid solution of cadmium salt.

Overview of cadmium sulfide CDS powder

Cadmium sulfide is an inorganic substance with a chemical formula of CdS. There are two crystals, the α-form is a lemon yellow powder, and the β-form is an orange-red powder. Slightly soluble in water, soluble in acid, slightly soluble in ammonia. It can be used to make fireworks, glass glazes, enamels, luminescent materials, and pigments. High-purity cadmium sulfide is a good semiconductor, has a strong photoelectric effect on visible light, and can be used to make photoelectric tubes and solar cells. It is prepared by passing hydrogen sulfide into the acid solution of cadmium salt.

Cadmium sulfide is an inorganic substance with a chemical formula of 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 Ore and wurtzite are the main economic sources 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.

Cadmium yellow is widely used for the coloring of enamel, glass and ceramics. It is also used in coatings and plastics industries, as well as electronic fluorescent materials. Cadmium yellow is suitable for coloring almost all resins, and it is translucent in plastics. The light-colored cadmium yellow containing zinc sulfide is used in polyethylene, and the molding and processing time should be shortened as much as possible, because zinc sulfide will promote the decomposition of polyethylene plastic and make it green. Cadmium yellow is not as stable as cadmium red in the room, and it is mostly used in indoor plastic products. Cadmium yellow should not be combined with pigments containing copper or copper salts, so as 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 is mainly used as a pigment because it has good thermal stability, light resistance, weather resistance, chemical resistance and high opacity. CDS Cadmium sulfide is used to make 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.

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. Tanki 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, Tanki 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.

Cadmium Sulfide Properties
Other Names	cadmium sulphide, orange cadmium, cadmium orange,
	cadmium yellow, CdS powder
CAS No.	1306-23-6
Compound Formula	CDS
Molecular Weight	144.48
Appearance	Yellow-orange Powder
Melting Point	1750℃
Boiling Point	980℃
Density	4.82 g/cm3
Solubility in H2O	N/A
Exact Mass	145.875429
Cadmium Sulfide Health & Safety Information
Signal Word	Danger
Hazard Statements	N/A
Hazard Codes	T
Risk Codes	45-22-48/23/25-53-62-63-68
Safety Statements	53-45-61
Transport Information	UN 3077 9/PG 3