SPHALERITE
Zinc Sulfide
CAS: 1314-98-3
Molecular Formula: SZn
SPHALERITE - Names and Identifiers
| Name | Zinc Sulfide |
| Synonyms | 77995 irtran2 albalith cleartran SPHALERITE thioxozinc sachtolith Zinc Sulfide Zinc sulfide pigmentwhite7 cipigmentwhite7 c.i.pigmentwhite7 C.I. Pigment White 7 Zinc Sulfide, 2.5 - 5.0 mm |
| CAS | 1314-98-3 |
| EINECS | 215-251-3 |
| InChI | InChI=1/S.Zn/q-2;+2 |
| InChIKey | WGPCGCOKHWGKJJ-UHFFFAOYSA-N |
SPHALERITE - Physico-chemical Properties
| Molecular Formula | SZn |
| Molar Mass | 97.46 |
| Density | 4.1 g/mL at 25 °C (lit.) |
| Melting Point | 1700°C |
| Boling Point | 1185°C (estimate) |
| Water Solubility | Soluble in acids. insoluble in water. |
| Vapor Presure | 12600mmHg at 25°C |
| Appearance | White powder |
| Specific Gravity | 4.1 |
| Color | white to faint yellow |
| Solubility Product Constant(Ksp) | pKsp: α-ZnS 23.80;β-ZnS 21.60 |
| Merck | 14,10160 |
| Storage Condition | RT, dark |
| Stability | Stable. May react with water to give toxic hydrogen sulfide. Incompatible with acids, strong oxidizing agents. Air and moisture sensitive. |
| Sensitive | Sensitive to light |
| MDL | MFCD00011301 |
| Physical and Chemical Properties | The product has two crystal forms. Form a zinc sulfide is a colorless hexagonal crystalline powder or a white to off-white or light yellow powder. The relative density was 4.087. Melting point 1700 °c. Thermal conductivity 25.1w/(m? K), coefficient of thermal expansion (by volume):100 °c, 0.163;200 °c, 0.395;400 °c, 0.919;800 °c, 2.146. Type B zinc sulfide is cubic crystal. White to off-white or yellow powder. The relative density of 4.102, the melting point of l700c. Coefficient of thermal expansion (by volume):100 °c, 0.156;200 °c, 0.386;400 °c, 0.898;800 °c, 1.996. It can be slowly oxidized to sulfate in air. Crystal transition temperature of 1020. Soluble in dilute inorganic acid. Insoluble in water. |
| Use | It is used as an analytical reagent, a phosphor, and a photoconductor material. It is also used in the manufacture of dyes, coatings, pigments, glass, curing oils, etc. Used as a variety of filters and laser window coating. |
SPHALERITE - Risk and Safety
| Risk Codes | 31 - Contact with acids liberates toxic gas |
| WGK Germany | 3 |
| RTECS | ZH5400000 |
| TSCA | Yes |
| HS Code | 28309085 |
SPHALERITE - Nature
Open Data Verified Data
The product has two crystal forms. Type A zinc sulfide is a colorless hexagonal crystalline powder or a white to off-white or light yellow powder. The relative density was 4. 087. Melting point 1700 °c. Thermal conductivity 25.1W/(m-K). Coefficient of thermal expansion (by volume):100 °c. 0.163;200 °c. 0.395;400 °c, 919,800 °c, 2.146. p-type zinc sulfide is cubic. White to off-white or yellow powder. The relative density is 4. 102 and the melting point is 1700 ℃. Coefficient of thermal expansion (by volume): 100 °c, 0.156;200 °c, 386; 400 °c, 0.898; 800 °c, 1.996. It can be slowly oxidized to sulfate in air. Crystal transition temperature of 1020. Soluble in dilute inorganic acid. Insoluble in water
Last Update：2024-01-02 23:10:35
SPHALERITE - Preparation Method
Open Data Verified Data
double decomposition method; The zinc sulfate solution is added into the reactor, and ammonium sulfide is slowly added under stirring for double decomposition reaction to generate zinc sulfide and ammonium sulfate, which is filtered to remove ammonium sulfate, and then concentrated by evaporation, cooling crystallization, centrifugal separation, preparation of zinc sulfide products.
Last Update：2022-01-01 11:03:59
SPHALERITE - Introduction
High hardness and high brittleness. There is no fixed melting point under normal pressure. Stable performance under normal temperature and pressure. Insoluble in alkali solution or water, slightly dissolved in hydrochloric acid, easily soluble in concentrated sulfuric acid and nitric acid. Easy to absorb water to form a stable dihydrate compound. See the light color darker. Stable in dry air, long-term wet air or contains moisture, gradually oxidized to zinc sulfate. It's irritating.
Last Update：2022-10-16 17:13:19
SPHALERITE - Use
Open Data Verified Data
used as an analytical reagent, a phosphor, and a photoconductor material. It is also used in the manufacture of dyes, coatings, pigments, glass, curing oils, etc. Used as a variety of filters and laser window coating.
Last Update：2022-01-01 11:03:58
SPHALERITE - Safety
Open Data Verified Data
packed with a barrel or woven bag lined with a polyethylene bag. 50kg or 25kg net weight per barrel (bag). Store in a ventilated, dry warehouse, avoid open air storage. The container must be sealed to prevent moisture. It shall not be stored and mixed with food products and feed. Cover shall be provided during transport. To prevent rain and sun, loading and unloading of light, to prevent packaging rupture. This product is corrosive. Toxic. Can stimulate the skin. Operators should wear work clothes and protective equipment. The workshop should be well ventilated.
Last Update：2022-01-01 11:03:59
SPHALERITE - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| semiconductor material | zinc sulfide is a group II-VI compound semiconductor material composed of sulfur and zinc. The molecular formula is ZnS, molecular weight is 97.45, melting point is 1020 ℃(15MPa), white crystal, lattice constant is 0.547nm, hexagonal crystal form, density is 4.08g/cm3. Almost insoluble in water, but soluble in acid. Long-term placement in humid air will convert to zinc sulfate. The forbidden band width is 3.6eV, which is the widest among II-VI compound semiconductor materials. Therefore, it can be made into a blue luminous tube. Powdered zinc sulfide is the most important electroluminescent material, light fluorescent material, used to prepare the fluorescent screen of the picture tube, scoreboard display, etc. It is also a window material and coating material in infrared optical materials. Most of the zinc sulfide used in phosphors is made by solution method, which is characterized by large output and low cost. High-purity zinc sulfide synthesized directly from elements through the gas phase is needle-like crystals, which are used to prepare high-performance coating materials and single crystal raw materials. Zinc sulfide single crystals can be grown by high pressure single crystal furnace and chemical vapor transport (CVD). Zinc sulfide sheets for optical materials can be prepared by hot pressing and CVD methods, which are widely used in laser window materials. In recent years, metal organic chemical vapor deposition is mostly used to prepare zinc sulfide thin film materials. Due to low growth temperature, the generated thin film has good integrity and few defects, and it is easy to prepare heterojunction optoelectronic devices. |
| toxicity | this product is corrosive. Toxic. Can irritate the skin. Operators should wear work clothes and protective equipment. The workshop should be well ventilated. |
| use | used as a matrix for analytical reagents and phosphors, and also used in the manufacture of dyes and solidified oils zinc sulfide (ZnS) is widely used in the manufacture of infrared windows, fairing and infrared optical components. it has the characteristics of high purity, insoluble in water, moderate density and easy processing. Zinc sulfide (ZnS) has good refractive index uniformity and consistency. In the 8-12μm band range, it has good image transmission performance, but some begin to absorb after 10um. The transmittance in the mid-infrared band is relatively high, accompanied by the shortening of the wavelength and the enhancement of absorption and scattering. Zinc sulfide (ZnS) has strong resistance to harsh environments, high hardness and breaking strength twice that of zinc selenide (ZnSe). The tough front optics of the zinc sulfide (ZnS) thermal imaging system for infrared windows and thermal bands (8 to 14 μm). Single crystal zinc sulfide (ZnS) is available but not common. In the commonly used spectral range, the scattering is very low. While strictly controlling the bulk absorption and internal structural defects of the material, it can be used as a high-power laser device under the condition of adopting the polishing technology with the smallest degree of damage and the coating process with the highest optical quality. zinc sulfide (ZnS) is significantly oxidized at 300 ℃, shows plastic deformation at about 500 ℃, and dissociates at about 700 ℃. For safety reasons, zinc sulfide windows should not be used above 250°C in normal atmosphere. Used as analytical reagent, phosphor, light conductor material. It is also used in the manufacture of dyes, coatings, pigments, glass, cured oil, etc. Used as various filters and laser window coatings. optical coating target. X-ray fluorescent screen. Add trace amounts of radium or new thorium salt for the luminescent dial of the table. TV fluorescent screen. The pigment of paint. |
| production method | metathesis method: add zinc sulfate solution into the reactor, slowly add ammonium sulfide under stirring to carry out metathesis reaction to generate zinc sulfide and ammonium sulfate, filter to remove ammonium sulfate, then evaporate and concentrate, cool and crystallize, and centrifuge to obtain zinc sulfide finished products, its ZnSO4 (NH4)2S → ZnS (NH4)2SO4 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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View History
SPHALERITE
85845-09-6
3-氨基-2-羟基苯甲酸甲酯
POTASSIUM P-NITROPHENYL SULPHATE
2-(((苄氧基)羰基)氨基)-3-(1H-咪唑-4-基)丙酸
Calcium hydroxide
托哌酮杂质5
3-甲酰胺基丁酸
2-甲氧基-1-苯基乙烷-1-醇
(R)-3-Amino-2-p-tolyl-propionic acid
85845-09-6
3-氨基-2-羟基苯甲酸甲酯
POTASSIUM P-NITROPHENYL SULPHATE
2-(((苄氧基)羰基)氨基)-3-(1H-咪唑-4-基)丙酸
Calcium hydroxide
托哌酮杂质5
3-甲酰胺基丁酸
2-甲氧基-1-苯基乙烷-1-醇
(R)-3-Amino-2-p-tolyl-propionic acid