Ammonium Hydrogen Difluoride

Description :

Ammonium hydrogen fluoride is an inorganic compound, the chemical formula is NH4HF2, white or colorless transparent rhombic crystal system crystallization, the product is flake, slightly sour taste, corrosive, easy deliquination, soluble in water as weak acid, easily soluble in water, slightly soluble in ethanol, heat or decomposition in hot water.

nature

Colorless orthorhombic or lamellar crystals, slightly sour. Melting point 124.6℃; The relative density is 1.5. It deliquesces easily in air. Soluble in water, aqueous solution is acidic reaction. Slightly soluble in ethanol. It decomposes when exposed to heat or hot water. Corrosive to glass. Non-combustible, irritating. Decomposition by heat releases toxic nitrogen oxides and fluoride fumes. It can sublimate at higher temperatures.

preparation

Put 40% hydrofluoric acid in a platinum dish or teflon container. Pass ammonia until the solution starts to turn brown on the Congo red paper. By freezing, that is, crystallizing. After the mother liquor is removed, pure ammonium hydrogen fluoride is obtained.

use

Reagent for chemical analysis. Used for glass etching agent in frosted glass production, disinfection and preservative in fermentation industry and surface treatment agent for silicon steel plate. It is also used in the manufacture of ceramics, magnesium alloys, cleaning and descaling of boiler feedwater systems and steam generation systems, and acidizing treatment of oil field sand plants.

security

Toxic! It's corrosive. The solution eats glass. It is irritating to the skin and mucous membrane, and the staff should be well protected. It is strictly prohibited to mix with acids and edible chemicals. Foam, carbon dioxide, dry powder, sand.

Packing :

Plastic woven bag lined with high-pressure polyethylene plastic bag,

net weight: 25kg/bag

Application:

Reagent for chemical analysis. Used for glass etching agent in frosted glass production, disinfection and preservative in fermentation industry and surface treatment agent for silicon steel plate. It is also used in the manufacture of ceramics, magnesium alloys, cleaning and descaling of boiler feedwater systems and steam generation systems, and acidizing treatment of oil field sand plants. Engraving glass etching agent, preservative, disinfectant, beryllium oxide metal beryllium solvent, analytical reagent and silicon steel plate surface treatment agent, also used in the manufacture of ceramics and aluminum-magnesium alloy oxidizer and boiler feed water system steam generation system cleaning agent, organic synthesis fluorination agent, electroplating solution, rare element extraction reagent.

Operation precautions: closed operation, strengthen ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear a self-priming filter dust mask, chemical safety glasses, protective work clothes, and rubber gloves. Avoid producing dust. Avoid contact with acids. When handling, light loading and unloading should be done to prevent damage to packaging and containers. Equipped with leak emergency treatment equipment. Empty containers may have harmful residues.

Storage precautions: Store in a cool, dry and well-ventilated warehouse. Keep away from fire and heat. Keep the container sealed. Should be stored separately from acids, do not mix storage. Storage areas should be equipped with suitable materials to contain leaks.

Packing method: ordinary wooden case outside ampoule bottle; Threaded glass bottles, iron lid pressed glass bottles, plastic bottles or metal barrels (cans) outside ordinary wooden cases. Keep against moisture and sealed.

Transport precautions: Transport vehicles should be equipped with the appropriate variety and quantity of fire equipment and leakage emergency treatment equipment. It is best to transport early and early in summer. The tank (tank) car used in transportation should have a grounding chain, and a hole partition can be provided in the tank to reduce static electricity generated by shock. It is strictly prohibited to mix with oxidizers. During transportation, it should be protected from sunlight, rain and high temperature. Stay away from fire, heat source and high temperature area during stopover. The exhaust pipe of the vehicle carrying the article must be equipped with a fire retardant device, and the loading and unloading of mechanical equipment and tools that are easy to produce sparks is prohibited. Road transport should follow the prescribed route, do not stay in residential areas and densely populated areas. It is forbidden to slip them in railway transportation. It is strictly prohibited to use wooden or cement ships for bulk transport.