Hydrofluoric acid electronic grade reagent. CAS 7664-39-3 EC 231-634-8| Chemical Reagents net

It is a strong and highly corrosive acid used extensively in the semiconductor industry and other high-tech applications. Its electronic-grade variant is of high purity, suitable for precise processes. Due to its dangerous nature, strict safety measures must be followed to ensure safe handling and prevent environmental harm.

General Information

CAS Number: 7664-39-3
Molecular Weight: 20.01
Molecular Formula: HF
MDL Number: MFCD00011346
EC Number: 231-634-8
Grade: Electronic UP Grade
Concentration: 48.8-49.2%
Brand: Keshih
Packaging: 4 L × 4 bottles/case

General Information

Hydrofluoric acid (HF) is a high-purity acid used in various high-tech applications, particularly in the semiconductor industry. It is commonly used for etching silicon wafers, cleaning, and other processes requiring high-purity chemicals.

Brand and Packaging

Brand: Keshih
Packaging: 4 L × 4 bottles per case

Physical Properties

Appearance: Colorless liquid
Odor: Pungent
Boiling Point: 19.5°C (67.1°F)
Melting Point: -83.3°C (-117.9°F)
Density: 0.997 g/cm³ (20°C)
Solubility: Completely miscible with water

Chemical Properties

Acidity: Strong acid
Reactivity: Highly corrosive; reacts with glass and many metals to form fluorides; can also react with various organic compounds.

F-H

Quality inspection report

| Item           | Hydrofluoric Acid |
|----------------|--------------------|
| Specification  | Electronic UP Grade |
| Batch Number   | 2022120101         |
| Molecular Formula | HF               |
| Molecular Weight | 20.01             |
| Batch Size     | 6900 kg            |
| Inspection Unit | Production Department |
| Sample Category | Inorganic          |
| Report Date     | 2022.12.03         |
| Inspection Basis | Enterprise Standard |

| Test Item                       | Standard Requirement | Measured Result |
|---------------------------------|----------------------|-----------------|
| Arsenic (As), ppb               | ≤30                  | <30             |
| Barium (Ba), Tantalum (Ta), Gold (Au), ppb | ≤10    | <10             |
| Beryllium (Be), Silver (Ag), Bismuth (Bi), ppb | ≤5   | <5              |
| Zinc (Zn), Gallium (Ga), Germanium (Ge), ppb | ≤10    | <10             |
| Lead (Pb), Cadmium (Cd), Tin (Sn), ppb | ≤10          | <10             |
| Iron (Fe), Cobalt (Co), Nickel (Ni), Copper (Cu), ppb | ≤10 | <10        |
| Strontium (Sr), Zirconium (Zr), Niobium (Nb), Molybdenum (Mo), ppb | ≤10 | <10 |
| Magnesium (Mg), Aluminum (Al), Potassium (K), Calcium (Ca), ppb | ≤10 | <10 |
| Titanium (Ti), Vanadium (V), Chromium (Cr), Manganese (Mn), ppb | ≤10 | <10 |
| Sulfite and Sulfate (SO4), ppb   | ≤5000                | <5000           |
| Lithium (Li), Thallium (Tl), Boron (B), Sodium (Na), ppb | ≤10  | <10           |
| Phosphate (PO4), ppb             | ≤1000                | <1000           |
| Nitrate (NO3), ppb               | ≤3000                | <3000           |
| Particles (≥0.5μm), count/mL    | ≤25                  | <25             |
| Chloride (Cl), ppb               | ≤5000                | <5000           |
| Color (Blackness Units)          | ≤10                  | <10             |
| Fluorosilicic Acid (H2SiF6), mg/kg | ≤100               | <100            |
| Content (%)                      | 48.5 – 49.5          | 49.1            |
| Appearance                       | Colorless, transparent liquid | Colorless, transparent liquid |

**Analysis Conclusion:**
Complies with Enterprise Standard for Electronic UP Grade.

**Approved by:** Zhang Xiaobin  
**Reviewed by:** Guan Xiujuan  
**Inspected by:** Liang Yao  

**Chengdu Kelong Chemical Co., Ltd.**  
**Certificate of Analysis**

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