# Iron Chloride **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/iron-chloride **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-04-04 **Evidence Score:** 2 / 10 **Category:** Mineral **Also Known As:** Ferric chloride, FeCl₃, Iron(III) chloride, Flores martis, Iron trichloride, Anhydrous ferric chloride, Iron perchloride ## Overview Iron chloride (FeCl₃, ferric chloride) is an inorganic iron salt used industrially as a coagulant and etching agent, not as a dietary supplement or therapeutic agent. Its strong Lewis acid properties and tissue corrosivity make it unsuitable and unsafe for internal administration in humans. ## Health Benefits • No documented health benefits - research indicates FeCl₃ is corrosive to tissues and not studied for therapeutic use • No clinical trials or RCTs identified in the research for biomedical applications • Industrial chemical only - not evaluated for internal administration • Tissue corrosivity precludes any potential health benefits • No evidence quality available as no clinical studies exist ## Mechanism of Action Iron chloride dissociates in aqueous solution to release Fe³⁺ ions and chloride, generating a strongly acidic local environment that denatures proteins and oxidizes biological membranes via Fenton-like chemistry. At a physiological level, unbound Fe³⁺ catalyzes the conversion of hydrogen peroxide to hydroxyl radicals (OH•), causing oxidative damage to lipids, DNA, and cellular proteins. Unlike therapeutic iron salts such as ferrous sulfate or ferric maltol, FeCl₃ lacks stabilizing ligands that would allow safe mucosal absorption via duodenal DMT-1 transporters. ## Clinical Summary No clinical trials, randomized controlled studies, or peer-reviewed human intervention studies have evaluated iron chloride (FeCl₃) for any therapeutic or nutritional purpose. Animal toxicology studies document severe gastrointestinal mucosal corrosion and systemic iron overload toxicity upon oral exposure. Poison control and occupational health literature consistently classify FeCl₃ as a corrosive hazard rather than a biomedical agent. The complete absence of clinical evidence reflects the compound's industrial classification, not a gap in research funding. ## Nutritional Profile Iron(III) chloride (FeCl₃) is an inorganic salt composed of iron in the +3 oxidation state and chloride ions, with a molecular weight of 162.2 g/mol (anhydrous) or 270.3 g/mol (hexahydrate FeCl₃·6H₂O). It contains approximately 34.4% iron by weight (anhydrous form). However, this is an industrial/laboratory chemical — not a nutritional mineral supplement. It is highly hygroscopic, strongly acidic in solution (pH < 2 at moderate concentrations), and corrosive to biological tissues. It provides no vitamins, fiber, protein, or beneficial bioactive compounds. Bioavailability as an iron source is irrelevant because oral or internal administration causes chemical burns to mucous membranes, esophageal and gastric tissue damage, and potential systemic iron toxicity. It should not be confused with bioavailable supplemental iron forms such as ferrous sulfate, ferrous bisglycinate, or iron pyrophosphate. Its only recognized medical use is as a topical hemostatic agent (Monsel's solution, a ferric subsulfate derivative) applied externally to stop minor bleeding, not for nutritional purposes. ## Dosage & Preparation No clinically studied dosage ranges exist for ferric chloride, as it lacks biomedical applications and is not used therapeutically. The compound's tissue corrosivity precludes internal administration. Consult a healthcare provider before starting any new supplement. ## Safety & Drug Interactions Iron chloride is corrosive to skin, eyes, and mucous membranes and is classified as a hazardous substance by OSHA and the EU GHS system; oral ingestion can cause severe burns to the esophagus and gastrointestinal tract. Systemic absorption of excess Fe³⁺ may cause acute iron toxicity, manifesting as vomiting, metabolic acidosis, hepatotoxicity, and [cardiovascular](/ingredients/condition/heart-health) collapse at high doses. It should never be combined with antacids, proton pump inhibitors, or chelating agents in any supplementation context, as these interactions are entirely moot given that FeCl₃ is contraindicated for human consumption. It is absolutely contraindicated in pregnancy, pediatric populations, and all other demographics as an ingestible substance. ## Scientific Research No human clinical trials, RCTs, or meta-analyses were identified for ferric chloride as a biomedical ingredient. PubMed PMIDs are unavailable, as FeCl₃ is not studied clinically for therapeutic use but is noted for its corrosivity to tissues. ## Historical & Cultural Context No historical traditional medicine uses are documented in the research. FeCl₃ (flores martis) is identified as a modern industrial chemical without documented roles in traditional systems like Ayurveda, TCM, or herbalism. ## Synergistic Combinations Iron chloride has no nutritional or therapeutic synergy stack because it is not a supplement or food-grade ingredient. For individuals seeking actual iron supplementation, bioavailable forms such as ferrous bisglycinate pair synergistically with Vitamin C (ascorbic acid, 200–500 mg) which enhances non-heme iron absorption by reducing Fe³⁺ to the more absorbable Fe²⁺ form, Lactoferrin (100–200 mg) which facilitates intestinal iron uptake and reduces GI side effects, and Vitamin A/Beta-carotene (5,000–10,000 IU) which helps mobilize stored iron and counteracts the inhibitory effects of phytates and polyphenols on iron absorption. These synergies apply only to food-grade iron compounds and should never be extrapolated to industrial FeCl₃. ## Frequently Asked Questions ### Can you take iron chloride as an iron supplement? No. Iron chloride (FeCl₃) is a corrosive industrial chemical and is not approved or safe for use as a dietary supplement. Clinically used iron forms include ferrous sulfate, ferric maltol, and iron bisglycinate, which are specifically formulated for safe gastrointestinal absorption via DMT-1 transporters in the duodenum. ### What is iron chloride used for? Iron chloride is used industrially as a flocculant in wastewater treatment, an etching agent for printed circuit boards, and a catalyst in organic synthesis reactions. It has no documented therapeutic or nutritional applications and is not evaluated by the FDA as a food additive or supplement ingredient. ### Is iron chloride the same as ferric iron supplements? No. While both contain Fe³⁺ ions, ferric iron supplements such as ferric maltol (Accrufer) or ferric carboxymaltose use stabilizing organic ligands that enable safe mucosal uptake and are rigorously tested in clinical trials. Iron chloride lacks these ligands, making it tissue-corrosive and metabolically dangerous rather than bioavailable in a therapeutic sense. ### What happens if you accidentally ingest iron chloride? Accidental ingestion of FeCl₃ can cause immediate chemical burns to the mouth, esophagus, and stomach lining, followed by systemic iron toxicity symptoms including nausea, vomiting, abdominal pain, and in severe cases metabolic acidosis or hepatotoxicity. Immediate contact with poison control (1-800-222-1222 in the US) is required, and chelation therapy with deferoxamine may be administered in clinical settings for significant exposures. ### Why is iron chloride not studied for health benefits? Research into iron chloride for therapeutic use is precluded by its known corrosive properties; Fe³⁺ in the unliganded chloride salt form generates reactive oxygen species via Fenton chemistry and denatures biological tissues on contact. Regulatory bodies including the FDA and EFSA have not evaluated FeCl₃ for biomedical use because safer, bioavailable iron compounds with established safety profiles already fulfill clinical iron-repletion needs. ### Is iron chloride safe to handle or store at home? Iron chloride (FeCl₃) is a corrosive industrial chemical that should not be stored in residential settings or handled without proper protective equipment. It can cause severe burns to skin and eyes, corrode metals and other materials, and release harmful fumes if mishandled. This chemical is designed for industrial applications only and poses significant safety risks outside of controlled laboratory or manufacturing environments. ### Why do supplement manufacturers not use iron chloride as a supplement ingredient? Iron chloride is not used in supplements because its corrosive properties damage the gastrointestinal tract and surrounding tissues, making it unsuitable for internal consumption. Supplement manufacturers instead use safer, well-researched iron forms like ferrous bisglycinate, ferrous sulfate, or ferric citrate that have established absorption profiles and safety data. Regulatory bodies and supplement standards do not permit iron chloride for oral supplementation due to its toxicity profile. ### How does iron chloride differ from other iron forms used in nutritional supplements? Iron chloride (FeCl₃) is a corrosive industrial compound fundamentally different from supplemental iron forms, which are designed to be absorbed safely and efficiently by the body. Supplement-grade iron sources like ferrous gluconate or iron bisglycinate undergo rigorous safety testing and are formulated to minimize gastrointestinal irritation, whereas iron chloride would cause tissue damage if ingested. No clinical research has ever evaluated iron chloride for nutritional purposes because its corrosive nature makes human administration unethical and dangerous. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*