Hydrofluoric Acid 70% Factory Direct

Hydrofluoric Acid 70% -High Purity

Synonym	Hydrogen Fluoride, Hydrofluoric Acid Solution
Molecular Formula	HF
Molecular Weight	20.01
CAS NO.	7664-39-3
EINECS NO.	231-634-8
UN NO.	1790
EMS NO.	F-A, S-B
Physical State	Colorless, transparent to light yellow smoking liquid
Smell (Odor)	Acrid, irritating odor
Density	1.15 g/mL at 25 °C(lit.)
Melting Point	-35°C
Boiling Point	105°C
Flash Point	112°C
Water Solubility	Soluble
Sensitivity	Hygroscopic
Stability	Stable. Hygroscopic. Incompatible with glass, alkali metals, light metals, alkaline earth metals
Regular Package	25kg/253kg per drum, or 1000kg per IBC tank
Storage	Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage.
Transportation	Hazardous Chemical, Hazard class: 8, Package Group: Ⅱ, UN No.: 1790

The reason for you to choose us:

1. Satisfaction Guaranteed

100% Satisfaction is our goal, where our services and products have you wanting us back

again and again. We make sure you will be satisfied.

2. Commited to Quality

We have 50 technicians monitor product quality in the factory, when you choose us,

you will feel the professional of 25 years’ experience of manufacturing fluorine chemical.

3. We don’t cost on earth

We are factory direct, volume production, and we know you want to keep a lid on costs.

4. Up-to-date Information

We care about you and your business. We will keep you informed with up-to-date information

every step of the way until your goods are loaded and shipped.

5. Focus on Results

We ensure that you are fully equipped with all the essential documentation required for

customs clearance, thus enabling you to effortlessly and successfully retrieve your shipment.

The Quality Specification of Hydrofluoric Acid 70%

Product Name	Hydrofluoric Acid 70%
Molecular Formular	HF
Molecular Weight	20.01
Appearance	Colorless Liquid
Test Thereunder	GB7744-2008
Index Name	Index ( % )
Assay ( w % )	≥ 70
H₂SiF₆( w % )	≤ 0.020
H₂SO₄ ( w % )	≤ 0.020
Package
25kg/drum
235kg/drum
1000kg/drum

Hydrofluoric acid (HF) in its 70% concentration is an extremely strong and highly corrosive chemical

that should be handled with extreme care and used only by trained professionals with proper safety

precautions. It has a limited set of specialized applications due to its hazardous nature.

Here are some specific uses for HF 70%:

1、Etching and Cleaning in Semiconductor Industry:

HF 70% is used for etching and cleaning silicon wafers and other semiconductor materials.

It can remove oxides and contaminants from the surfaces of these materials, which is crucial for

manufacturing microchips and electronic components.

2、Glass Etching and Frosting:

In the glass industry, HF 70% is used for etching and frosting glass surfaces. It can create decorative

designs on glassware, windows, and other glass products.

3、Chemical Analysis:

Hydrofluoric acid is used in laboratories for dissolving silica (silicon dioxide) and other minerals,

allowing for chemical analysis and determination of composition.

4、Metal Pickling:

HF 70% can be used for cleaning and etching certain metals, such as stainless steel and titanium,

in industrial applications. This prepares the metal surfaces for further processing, welding, or coating.

5、Oil Refining:

In the oil refining industry, HF 70% is used for alkylation processes, which produce high-octane gasoline.

6、Mineral Processing:

HF 70% is employed in the extraction of minerals like fluorite and aluminum from their ores.

It can also be used in the refining of specific rare earth elements.

7、Chemical Synthesis:

In some chemical reactions and syntheses, HF 70% can serve as a catalyst or reagent.

Your name

Where are you from

Your contact e-mail

Your company name

What do you wish to enquire about

Hydrofluoric Acid 70% - High Purity