Ferric chloride
CAS 7705-08-0
EC 231-729-4
Formula Cl3Fe
MW 162.2 g/mol
Catalysts & Catalyst Precursors Water TreatmentPulp & PaperTextile, Leather & PaperMining & MetalsPharmaceuticals & Healthcare CatalysisPreservation & BiocideCoagulation & FlocculationpH Regulation & Buffering
Description
Ferric Chloride (CAS 7705-08-0, EC 231-729-4, formula Cl3Fe) is an inorganic iron salt also known as iron trichloride, iron perchloride, and flores martis. It carries no assigned E-code and is classified under HS code 28273990. It is commercially supplied as an anhydrous powder or as an aqueous solution, typically at 40% concentration.
In water treatment, Ferric Chloride acts as a coagulant by hydrolyzing in water to form iron hydroxide flocs that bind suspended solids and phosphates for removal. In the textile and leather industries, it functions as a mordant and colorant, fixing dyes to fibres through coordination bonding. It also serves as a Lewis acid catalyst in organic synthesis reactions.
Ferric Chloride is available in technical, industrial, and reagent grades, with select grades conforming to Ph.Eur. and REACH registration requirements. Packaging options typically include 25 kg bags, 200 kg drums, and IBC containers for solution grades. Buyers should confirm grade specification against their application and local regulatory obligations.
In water treatment, Ferric Chloride acts as a coagulant by hydrolyzing in water to form iron hydroxide flocs that bind suspended solids and phosphates for removal. In the textile and leather industries, it functions as a mordant and colorant, fixing dyes to fibres through coordination bonding. It also serves as a Lewis acid catalyst in organic synthesis reactions.
Ferric Chloride is available in technical, industrial, and reagent grades, with select grades conforming to Ph.Eur. and REACH registration requirements. Packaging options typically include 25 kg bags, 200 kg drums, and IBC containers for solution grades. Buyers should confirm grade specification against their application and local regulatory obligations.
Physical Properties
| Melting Point | ~300 °C (approx) |
| Boiling Point | ~316 °C (approx) |
| Density | 2.898 g/cm³ @ Temp: 25 °C |
| Flash Point | 316°C |
| Appearance | Ferric Chloride is a black-brown, dark-green, or black crystalline solid. |
| Color | Yellow |
| Form | powder |
| Water Solubility | 920 g/L (20 ºC) |
| Vapor Pressure | 1 mm Hg ( 194 °C) |
| Refractive Index | n20/D1.414 |
| pH | 1 (200g/l, H2O, 20℃) |
Safety & Handling (Learn More)
Danger GHS05 GHS07 GHS08 GHS09
H
H302H304H314H315H318H335H341H370H371H402H412
P
P203P260P261P264P270P271P273P280P316P317P318P319P321P330P331P363P405P501P264+P265P301+P316P301+P317P302+P352P304+P340P308+P316P332+P317P362+P364P403+P233P301+P330+P331P302+P361+P354P305+P354+P338
Trade & Regulatory
| HS Code | 28273990 |
| UN Number | 2582 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 8B - Non-combustible corrosive hazardous materials |
| WGK (Germany) | 1 |
Other Names
trichloroironflores martisiron trichlorideiron(III) chlorideTriflocClayfecIron chloride
Related Products
Raw Materials
Need a chemical? Get a quote within 24 hours.