--- product_id: 133852726 title: "Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound" brand: "alpha chemicals" price: "£10.25" currency: GBP in_stock: false reviews_count: 5 url: https://www.desertcart.co.uk/products/133852726-black-iron-oxide-fe3o4-synthetic-1-pound store_origin: GB region: United Kingdom --- # Ideal for high-temp thermite welding Synthetic Fe3O4 with strong magnetic properties 0.30 micron ultra-fine particle size Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound **Brand:** alpha chemicals **Price:** £10.25 **Availability:** ❌ Out of Stock ## Summary > 🧲 Unlock the magnetic magic of precision-engineered black iron oxide! ## Quick Answers - **What is this?** Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound by alpha chemicals - **How much does it cost?** £10.25 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/133852726-black-iron-oxide-fe3o4-synthetic-1-pound) ## Best For - alpha chemicals enthusiasts ## Why This Product - Trusted alpha chemicals brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Magnetic Marvel:** Perfect for cutting-edge magnetic putty and slime experiments that captivate and inspire. - • **Bulk Ready for Innovation:** One full pound of premium black iron oxide to fuel your creative and industrial projects without interruption. - • **Synthetic Purity Guaranteed:** Produced by Alpha Chemicals for reliable, contaminant-free performance every time. - • **Versatile Industrial Powerhouse:** From thermite welding to fertilizers and ceramics, unlock endless professional-grade uses. - • **Precision Engineered Microparticles:** Experience unmatched consistency with ultra-fine 0.30 micron particles for flawless application. ## Overview This 1-pound synthetic Black Iron Oxide (Fe3O4) from Alpha Chemicals features ultra-fine 0.30 micron particles, making it ideal for thermite welding, fertilizers, pigments, ceramics, and innovative magnetic experiments. Engineered for purity and versatility, it’s the go-to material for professionals and creators seeking reliable, high-performance iron oxide. ## Description It is Used in thermite welding, fertilizers, pigments, ceramics, along with a lot of other uses. Particle size runs about 0. 30 micron . Review: Excellent value for money! - Got this for a school science project, and it came exactly as in the product description and photo. We’d ordered two packages, and they came double sealed. What’s more, the individual packages have a resealable zip, so that makes storage within uses that much more convenient, safe and reliable. The particle size is not quite nanometer size, but then that too was mentioned clearly in the product description, and we knew that beforehand. So, no complaints there. Oh, and it was delivered earlier than promised! A pleasant surprise. Review: Messy but good quality. - My daughter needed this for her school science project. The price was good. But be aware this stuff makes a mess. Not easy to get off skin or clothes. But other than that. It worked great. Was mailed fast. ## Features - This comes from a synthetic source and is produced by Rockwood - Particle size runs about 0. 30 micron - Used in thermite welding, fertilizers, pigments, ceramics, along with a lot of other uses - Used in magnetic putty, magnetic slime, and other experiments ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008LEOMJC | | Best Sellers Rank | #217,041 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,453 in Lab Chemicals | | Brand | Alpha Chemicals | | Brand Name | Alpha Chemicals | | Customer Reviews | 4.4 out of 5 stars 1,056 Reviews | | Item Volume | 1 Litres | | Item Weight | 1.1 Pounds | | Manufacturer | Alpha | | Manufacturer Part Number | 1SynFe | | Model Number | C2I_INV_B008LEOMJC_R | | UPC | 725410978229 | | Volume | 1 Litres | ## Product Details - **Brand:** Alpha Chemicals - **Item Weight:** 1.1 Pounds - **Item Volume:** 1 Litres - **Manufacturer:** Alpha - **UPC:** 725410978229 ## Images ![Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound - Image 1](https://m.media-amazon.com/images/I/613R-8tA-HL.jpg) ![Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound - Image 2](https://m.media-amazon.com/images/I/61tA1IJQ8UL.jpg) ## Questions & Answers **Q: Would this be a good choice for use with demonstrations of magnets and magnetic fields?** A: That depends on what you're trying to do. You won't be able to make a true ferrofluid (that is, a silky smooth, low viscosity, inky black fluid), but you can indeed make a more 'chunky' magnetic fluid. You'll need strong magnets. **Q: Would this be a good choice for making ferrofluid?** A: In short, no! I was mislead by the first answer to this question and bought a bag to play with. The problem is particle size; ferrofluids require particles under about 10 nanometers and these are (claimed to be) 1 micron (1000 nanometers) in size. Far too large for ferrofluids, but I think I'll find something interesting to do with the stuff. **Q: If made into putty or ink, is there a way to get this stuff to attract 'itself'? Ex: Spread the magnetized ink on 2 sheets of paper.** A: It seems to just lay there and do nothing on it's own. I made the putty (be sure to ware gloves when making it - it is OK to handle later) You have to have a really strong magnet to attract it - - it is a fun science lab for kids but the Fe3O4 is not magnetic it is attracted by a magnet. It can be really messy ! **Q: Is this suitable for making cosmetics? Cosmetic grade , if you will?** A: Yes. I actually saw a video where the woman had used for cosmetics. She did much research and found that it was suitable and safe for cosmetic purposes. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent value for money! *by G***E on 14 October 2023* Got this for a school science project, and it came exactly as in the product description and photo. We’d ordered two packages, and they came double sealed. What’s more, the individual packages have a resealable zip, so that makes storage within uses that much more convenient, safe and reliable. The particle size is not quite nanometer size, but then that too was mentioned clearly in the product description, and we knew that beforehand. So, no complaints there. Oh, and it was delivered earlier than promised! A pleasant surprise. ### ⭐⭐⭐⭐⭐ Messy but good quality. *by A***Y on 11 September 2019* My daughter needed this for her school science project. The price was good. But be aware this stuff makes a mess. Not easy to get off skin or clothes. But other than that. It worked great. Was mailed fast. ### ⭐⭐⭐⭐⭐ Good *by J***E on 22 April 2026* Good ## Frequently Bought Together - Black Iron Oxide - Fe3O4 - Synthetic - 1 Pound - MIKEDE Strong Rare Earth Neodymium Magnets, Heavy Duty Bar Magnets with Double-Sided Adhesive, Powerful Pull Force, Perfect for Fridge, Garage, Kitchen, Science, Craft, Office, DIY 60x10x3mm 6pack - DIYMAG 1" Cube Neodymium Magnets, One Inch Cube Rare Earth Magnet - Grade N52, Pack of 2 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/133852726-black-iron-oxide-fe3o4-synthetic-1-pound](https://www.desertcart.co.uk/products/133852726-black-iron-oxide-fe3o4-synthetic-1-pound) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-02*