Ammonium hydrogen difluoride/ CAS:1341-49-7
Specification
|
Item |
Specifications |
|
Appearance |
solid |
|
Colour |
White |
|
melting point |
125 °C(lit.) |
|
boiling point |
230 °C |
|
density |
1,5 g/cm3 |
|
vapor pressure |
1 hPa (20 °C) |
|
flash point |
238°C |
|
storage condition |
Store at room temperature. |
|
solubility |
630g/l |
|
acid dissociation constant(pKa) |
6.3[at 20 ℃] |
|
PH |
2 (5.7g/l, H2O, 20℃) |
|
water solubility |
630 g/L (20 ºC) |
Usage
Ammonium hydrogen difluoride is a white crystalline solid with various uses in different industries. The following is a brief introduction to its uses:
- Semiconductor Industry: It is used as an etching agent for semiconductor wafers and in the production of thin films. The fluoride ions it releases help modify the surface characteristics of materials, which is crucial for the precise processing of semiconductor devices.
- Glass Industry: It serves as a glass etching agent, often used in combination with hydrofluoric acid to enhance the etching effect. It can also be used for the surface treatment of silicon - steel sheets, and is involved in the production of specialized glass, such as glass with high - temperature resistance or specific chemical reactivity.
- Metal Processing: It is used as a solvent for metal beryllium and in the surface treatment of silicon - steel sheets. In the electroplating industry, it can accelerate the corrosion reaction on the metal surface, making the electroplating more uniform and firm.
- Chemical Reagent: It is used as a chemical reagent in various chemical reactions and experiments. It can also be used to prepare metal fluorides by reacting with metal oxides or metals, and serves as a key source of fluoride ions in many industrial and analytical applications.
- Other Uses: In the ceramic and magnesium - alloy manufacturing industries, it plays an important role in the production process. It is also used for the cleaning and descaling of boiler feed - water systems and steam - generation systems, and in the acidizing treatment of oil - field sandstones.
Packaging and Shipping
25KG/Drum or as customer requirements.
Belongs to common goods and can deliver by ocean and air
Keep and storage
Shelf life:24 month from date of manufacture in original unopened packaging stored in a cool dry place out of direct sunlight, water.
Ventilated warehouse, Low temperature drying, Separated from oxidants, acids.
