Iron II Chloride (FeCl2 15 – 30%) Vietnam
Iron II Chloride is used as a wastewater treatment chemical, FeCl2 15 - 30% flocculant, applied in many manufacturing industries such as: textile dyeing, painting, electroplating, animal husbandry, domestic wastewater, hospitals
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Iron II Chloride is used as a wastewater treatment chemical, FeCl2 15 - 30% flocculant, applied in many manufacturing industries such as: textile dyeing, paint, electroplating, livestock, domestic wastewater, hospitals.
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Ferrous chloride (FeCl2) 15 – 30% (Iron II Chloride) is one of the important chemicals widely used in industrial wastewater treatment, electroplating, paint production, textile dyeing, animal husbandry and many other fields.
- Outstanding features: FeCl2 acts as a strong flocculant, helping to remove heavy metals (Cd²⁺, Pb²⁺, Cr³⁺, As³⁺), reduce BOD/COD and reduce phosphate (PO₄³⁻) in wastewater.
- Practical applications: In addition to water treatment, FeCl2 is also used as a catalyst in chemical production, electroplating industry and laboratory research.
Loc Thien Chemicals supplies Ferrous chloride FeCl2 15 - 30% with full MSDS, COA documents, ensuring high quality, stable supply, distributed nationwide with specifications of 30kg/can - Drum - Tank - Tank truck.
What is FECL2?
Ferrous chloride (FeCl2) aka Iron II Chloride Is one inorganic salts important, has chemical formula FeCl2, Inside:
- Iron (Fe) II combined with two chlorine atoms (Cl).
- Exists in two forms:
- Anhydrous form (FeCl2): White or gray, susceptible oxidized to FeCl3 when exposed to air.
- Hydrated form (FeCl2·4H2O): Light blue, has the character high moisture absorption, soluble in water.
This is an important chemical in industry, especially wastewater treatment, electroplating, textile and chemical production.

Physical and chemical properties of FeCL2
Physical properties of Iron II Chloride.
- Color: Khan (white/gray) | Hydrated (light blue).
- Solubility: Soluble in water, more soluble at high temperature.
- Hygroscopicity: FeCl2·4H2O form absorbs moisture quickly.
- susceptible to oxidation: When exposed to air, FeCl2 easily converts into FeCl3 (Iron III Chloride).
| Parameter | Value |
| Molar mass of Fecl2 | 126.7524 g/mol (anhydrous) 162.78296 g/mol (2 water) 198.81352 g/mol (4 water) |
| Specific weight | 3.16 g/cm³ (anhydrous) 2.39 g/cm³ (2 water) 1.93 g/cm³ (4 water) |
| Melting point | 677 °C (anhydrous) 120 °C (4 water) 105 °C (4 water) |
| Boiling point | 1.023 °C (anhydrous) |
| Solubility in water | 64.4g/100 mL (10°C) 68.5g/100 mL (20°C) 105.7g/100 mL (100°C) |

Chemical properties of FeCL2.
Important reactions of FeCl2:
- With stronger metal: FeCl2 reacts with aluminum (Al), create metallic iron.
- 3FeCl2+2Al→3Fe+2AlCl3
- With alkali: Create greenish-white Fe(OH)2 precipitate, susceptible to oxidation.
- FeCl2+2NaOH→Fe(OH)2+2NaCl
- With acids stronger than HCl: Transform into iron(III) chloride and Fe2(SO4)3.
- 6FeCl2+6H2SO4→Fe2(SO4)3+3SO2+6H2O+4FeCl3
- Reaction with salt:
- FeCl2 + 2AgNO3 → Fe(NO3)2 + 2AgCl

Applications of Ferrous chloride FeCL2.
Applications of FeCl2 in industry:
- Wastewater treatment: Remove heavy metals, reduce BOD/COD.
- Electroplating industry: Remove iron oxide, support phosphatization.
- Paint & Textile Dyeing Industry: Stabilizes color, increases adhesion.
- Livestock, ponds: Algae control, pond water treatment.
- Landfill leachate: Limit pollution.
- Chemical & Additive Manufacturing: Ingredients in pesticides, laboratory.

FeCl2 in wastewater treatment – Mechanism of action
Ferrous chloride plays an important role in the process. wastewater treatment, especially in Heavy metal removal and phosphate reduction (PO₄³⁻). The mechanism of action includes:
- (1) Removal of heavy metals: Fe²⁺ in FeCl2 reacts with heavy metals (Cd²⁺, Pb²⁺, Cr³⁺, As³⁺…), forming insoluble precipitate, helps remove from water.
- Fe2++Cr3++OH−→Fe(OH)3+Cr(OH)3↓
- (2) Phosphate removal: Fe²⁺ reacts with phosphate (PO₄³⁻) in water, forming a precipitate FePO₄, helps reduce PO₄³⁻ content in wastewater.
- Fe2++PO43−→FePO4↓
🔹 Takeaways: Using FeCl2 helps remove heavy metals, phosphates, at the same time reduce odors in wastewater.
Compare Ferrous chloride (FeCl2) and Ferric chloride (FeCl3)
Some customers often confuse between Ferrous chloride (FeCl2) , and Ferric chloride (FeCl3) when choosing wastewater treatment chemicals. Below is a comparison table that helps clarify the differences between the two:
| Characteristics | FeCl2 (Ferrous chloride) | FeCl3 (Ferric chloride) |
|---|---|---|
| Chemical properties | Contains ferrous iron (Fe²⁺) | Contains iron trivalent (Fe³⁺) |
| Color | Moss green (liquid) or white/grey (anhydrous) | Reddish brown (liquid) or orange yellow (anhydrous) |
| Solubility | Soluble in water | Good solubility, easy to form complexes with water |
| Main application | Wastewater treatment, heavy metal removal, electroplating support | Wastewater treatment, coagulation of organic impurities, used in paper industry |
| Working pH | Optimized at pH 5 - 8 | Optimized at pH 2 - 4 |
🔹 Takeaways: FeCl2 is often used to deoxidation and remove heavy metals in wastewater, while FeCl3 has the effect of precipitation, flocculation better.
Ferrous chloride (FeCl2) production process
Ferrous chloride can be produced by several different methods. Two main methods include:
Reaction of iron with hydrochloric acid (HCl)
- Fe+2HCl→FeCl2+H2↑
- ✅ Advantages: Simple process, iron materials are easy to find.
- ❌ Disadvantages: Hydrogen gas (H₂) produced can be dangerous if not properly controlled.
Reaction of Ferric chloride (FeCl3) with iron metal
- Fe+2FeCl3→3FeCl2
- ✅ Advantages: No H₂ gas generation, easier to control.
- ❌ Disadvantages: Requires FeCl3 source for reaction.
📌 Note:In industry, FeCl2 is often produced as a 30% solution for easy storage and use.
Instructions for storage and safe use of FeCl2
Methods of preservation
- Luu tru Liquid FeCl2 in HDPE plastic tank or composite tank to avoid metal corrosion.
- Avoid exposure to air, because FeCl2 is easily oxidized to FeCl3.
- Store in a cool place dry and cool, avoid direct sunlight.
Safety measures when using
| Risk | Treatment |
|---|---|
| Causes skin irritation | Wear gloves and protective clothing when handling. |
| Causes eye damage | Wear protective glasses while working |
| Impact on the respiratory tract | Use chemical masks and work in well-ventilated areas. |
| Chemical Leak | Neutralize by lime water or sodium carbonate (Na₂CO₃), then collect waste properly |
???? Important note: Do not let FeCl2 come into contact with aluminum, zinc, copper, as it may cause a strong corrosive reaction.
Where to buy FeCL 2 with the best reputation - quality - price today?
Loc Thien Chemicals provided FeCl2 15 – 30% Genuine, good price, fast delivery nationwide.
- Genuine imported goods, full MSDS, COA.
- Stable source of goods, competitive prices.
- Fast delivery nationwide.
- 📞 Hotline: 0707 31 4444 - (+84) 979 891 929
- 🌐 Website: hoachatcoban.net
- (I.e. Headquarters: 452/6B Provincial Road 10, Binh Tan, Ho Chi Minh City
Top Q&A
What is FeCl2 and what are its applications?
Iron(II) chloride (FeCl2) solution at 15-30% concentration is a coagulant used in wastewater treatment to remove H2S and phosphorus. FeCl2 is also used in the production of dyes, printing inks, and as a catalyst. CAS: 7758-94-3.
What is the difference between FeCl2 and FeCl3?
FeCl2 (iron II) in solution form is suitable for H2S removal and wastewater treatment. FeCl3 (iron III) has stronger coagulation capabilities and is widely used in water treatment. Loc Thien supplies both types. Hotline: (+84)979 891929.


