Descriptions: 

Hydrofluoric acid (HF) is an aqueous solution of hydrogen fluoride gas. 

At room temperature, it appears as colorless transparent to light yellow smoke liquid with pungent odor. It has a specific gravity of 0.98 which is slightly lighter than water. It has a boiling point of 19.4 °C, being highly volatile. It can release white smoke once placed in air. The aqueous solution containing less than 60% hydrogen fluoride appears as a colorless clear fuming liquid. Industrial products are usually aqueous solution containing 40 to 45% HF.

It has pungent odor. It can react with sulfur trioxide or chlorosulfonic acid to generate fluoride sulfonic acid, and can react with halogenated aromatic hydrocarbons, alcohols, olefins, hydrocarbons to generate fluorine-containing organic compound. When being dissolved in water, it can produce highly corrosive acid, being medium-intensity acid. It is extremely smelly, being very toxic and is prone to cause ulceration when get touch with the skin with a severe extent being larger than any acids. 

If inhaled of its vapor, it can have fatal effects, thus strict attention should paid during usage.

Hydrofluoric acid can also react with general metals, metal oxides, and hydroxide, generating a variety of metal fluoride salts, but the effect is not as dramatic as hydrochloric acid. Gold, platinum, lead, paraffin and some plastics (polyethylene, etc.) does not react with it and thus being able to be used as containers.

Strong corrosivenes
It can erode glass and silicate to produce gaseous silicon tetrafluoride. The reaction is as follows:
SiO2 + 4HF → H2O + SiF4 ↑,
glass is a silicon compound so the hydrofluoric acid can't be put into glass containers.Hydrofluoric acid can form acid salt, hydrofluoric acid is a monobasic acid, but can produce a series of acid salts such as NaHF2, KHF2, NH4HF2, which are the other three kinds of halogen acid.

The weak acidity of hydrofluoric acid; because of the strong binding capability of hydrogen atom with fluorine atom,  hydrofluoric acid can't be completely dissociated in the water. In the hydrohalic acid, only hydrofluoric acid is weak acid (its ionization constant is 3.5 × 10 ^-4; its apparent ionization degree is about 10% at a concentration of 0.1mo1.L^-1, therefore, HF can reluctantly taken as a kind of strong acid. The ionization degree at high concentration is higher than that at low concentration. This property is different from other kinds of general weak electrolytes.

Application:

1. Mainly used as a raw material for fluorinated compounds, but also for the manufacture of aluminum fluoride and cryolite, semiconductor surface etching and as a catalyst for alkylation.

2. Used as a strong acidic etchant in the electronics industry, it can be used with nitric acid, acetic acid, ammonia and hydrogen peroxide.

3. Used as an analytical reagent, but also for the preparation of high purity fluoride.

4. It is a necessary fluorine source for fluorine salts, fluorine refrigerants, fluorine plastics, fluorine rubber, fluorine medicine and pesticides.

5. It is the raw material for the production of refrigerant "freon", fluorine-containing resin, organic fluoride and fluorine. It can be used as catalyst for alkylation, polymerization, condensation, isomerization and other organic synthesis in chemical production.

6. For the manufacture of organic or inorganic fluorides, such as fluorocarbons, sodium fluoride, aluminum fluoride, uranium hexafluoride and cryolite.

7. Used for etching glass, pickling metal, making inorganic fluorine salt products and chemical reagents.

8. Used in atomic energy industry, elemental fluorine, fluoride, can also be used as a catalyst, fluoride agent, etc.

9. For organic or inorganic fluoride.It is also used for stainless steel, non-ferrous metal pickling, glassware frosting and pickling, frosted light bulb treatment, etc.

10. Determination of silica, manufacture of fluoride, copper cleaners, metallurgical metallographic analysis, silicon compound analysis.

Packaging & Shipping:

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About Us:

NINGBO HENGHUA TECHNOLOGY DEVELOPMENT CO., LTD. is a professional enterprise engaged in export, the products mainly include chemical products, medical devices, masks, machinery, chemical raw materials, and pharmaceutical intermediates. We have more and more customers from all over the world. We can provide our customers with the best product quality and reasonable price.
Our aim is "service and sincere exchange for your trust and support, mutual benefit and win-win". We look forward to working with friends all over the world! In order to meet the requirements of importers and middlemen, further provide customers with "door-to-door" service. We have our own export service system, can provide customers with the best export route and the lowest price. We have a skilled, operational ability of the team. 

In addition, we can find the goods with the lowest price and the best quality for overseas customers, check the goods and reserve shipping space, so as to open up the Chinese market and relieve the import and export.

FAQ

Q1: Can i get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.

Q2: How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T,  Paypal or Escrow(Alibaba).

Q3: How to confirm the Product Quality before placing orders?
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samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

Q4:What's your MOQ?
A:Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Q5: How about delivery lead time?
A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)