Iron(II) chloride tetrahydrate
Iron(II) chloride tetrahydrate (CAS: 13478-10-9), with the linear formula FeCl₂ · 4H₂O and a molecular weight of 198.81 g/mol, is a hydrated inorganic salt. It typically appears as a blue-green crystalline solid. This compound finds utility as a reducing agent and in various chemical synthesis applications, particularly within inorganic chemistry and catalysis.
- IUPAC
- Ferrous chloride tetrahydrate
- Synonyms
- Ferrous chloride tetrahydrate

Catalysis
Iron(II) chloride tetrahydrate serves as a catalyst or precursor in various organic and inorganic catalytic processes. Its redox properties are exploited in specific transformations.
Chemical Synthesis
It is employed as a reagent in the synthesis of other iron compounds and complex molecules. Its reducing capabilities are valuable in certain synthetic pathways.
Inorganic Chemistry
As a source of ferrous ions, it is used in studies and preparations within inorganic chemistry. It can be a starting material for coordination compounds.
| Molecular weight | 198.81 |
|---|---|
| Linear formula | FeCl2 · 4H2O |
| Assay | 99.0-102.0% |
| Vapour pressure | 10 mmHg (693 °C) |
| Impurities tested | ≤2% ferric chloride |


Hazard statements
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3260 8/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 22-34 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Iron(II) chloride tetrahydrate used for?
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Iron(II) chloride tetrahydrate is primarily used in catalysis, chemical synthesis, and various applications within inorganic chemistry.
What is the CAS number and formula for Iron(II) chloride tetrahydrate?
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The CAS number is 13478-10-9, and the linear formula is FeCl₂ · 4H₂O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Iron(II) chloride tetrahydrate with an assay of 99.0-102.0%. We do not represent this product as USP, BP, or EP grade.
What are the main hazards associated with Iron(II) chloride tetrahydrate?
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Iron(II) chloride tetrahydrate is dangerous. It causes severe skin burns and eye damage (H314) and is harmful if swallowed (H302). Appropriate personal protective equipment, including a dust mask (N95), eyeglass, and gloves, is essential.
How is Iron(II) chloride tetrahydrate packed and shipped?
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This chemical is shipped as UN 3260, Class 8, Packing Group 3, with appropriate hazard labelling. TSS exports globally, adhering to all shipping regulations.
How can I request a sample or quote for Iron(II) chloride tetrahydrate?
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To request a sample or a quotation, please contact our sales team through the website or by direct inquiry, providing your specific requirements.
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