--- product_id: 5603533 title: "Ferrous Sulfate Heptahydrate - FeSO4*7H2O - 20% Iron - Very Soluble - 1 Pound" brand: "alpha chemicals" price: "¥5831" currency: JPY in_stock: true reviews_count: 13 category: "Alpha Chemicals" url: https://www.desertcart.jp/products/5603533-ferrous-sulfate-heptahydrate-feso4-7h2o-20-iron-very-soluble-1 store_origin: JP region: Japan --- # Feed grade, safe for animal supplements Highly soluble for rapid action 20% pure iron content Ferrous Sulfate Heptahydrate - FeSO4*7H2O - 20% Iron - Very Soluble - 1 Pound **Brand:** alpha chemicals **Price:** ¥5831 **Availability:** ✅ In Stock ## Summary > 💥 Unlock the power of pure iron – fast, effective, and feed-grade safe! ## Quick Answers - **What is this?** Ferrous Sulfate Heptahydrate - FeSO4*7H2O - 20% Iron - Very Soluble - 1 Pound by alpha chemicals - **How much does it cost?** ¥5831 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/5603533-ferrous-sulfate-heptahydrate-feso4-7h2o-20-iron-very-soluble-1) ## 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 - • **Trusted Quality:** Alpha Chemicals brand with 4.5-star rating from 600+ users. - • **Optimal Iron Boost:** Delivers a potent 20% iron concentration for maximum effectiveness. - • **Compact & Convenient:** 1-pound bottle designed for easy storage and precise dosing. - • **Versatile Applications:** Perfect for water treatment, pest control, and animal feed supplements. - • **Rapid Dissolution Power:** Ultra-soluble heptahydrate form ensures fast and efficient mixing. ## Overview Ferrous Sulfate Heptahydrate (FeSO4*7H2O) is a highly soluble, feed-grade iron supplement containing 20% iron. Ideal for water treatment, pest control, and animal feed, this 1-pound powder from Alpha Chemicals offers rapid dissolution and trusted quality, making it a top choice for professionals seeking reliable iron supplementation. ## Description Ferrous sulfate heptahydrate is the very soluble form of ferrous sulfate that is used in water treatment, most control, animal feed supplements, along with a wide range of other uses. Review: Ferrous sulfate - Works to kill clover in yard. Good value, Delivered on time Review: Super easy to use - We purchased this to use to gray our fence boards. We had to replace a few boards on our wooden privacy fence and thet didn't match the others, which were grayed. So we read online this would gray the boards and it did an excellent job. It saved us to much work of having to powerwash the other boards to try to make them match. It was super easy too. Just mix the powder with warm water, brush it on with a paintbrush and let it sit until the fence it your desired color, then rinse. ## Features - Feed Grade - Very Soluble Hepahydrate form - 20% Iron - Ferrous sulfate heptahydrate is the very soluble form of ferrous sulfate that is used in water treatment, most control, animal feed supplements, along with a wide range of other uses. ## Technical Specifications | Specification | Value | |---------------|-------| | % Assay of Chemical(s) | 20 | | ASIN | B007ODUI76 | | Best Sellers Rank | #22,779 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #663 in Garden Fertilizers | | Brand | Alpha Chemicals | | Brand Name | Alpha Chemicals | | Container Type | Bottle | | Customer Reviews | 4.5 out of 5 stars 644 Reviews | | Item Form | Powder | | Item Volume | 1 liters | | Manufacturer | Alpha Chemicals | | Model Number | 1FeSO4 | | Package Information | Bottle | | Part Number | 1FeSO4 | | Percentage assay | 20 | | UPC | 725410979370 | | Unit Count | 16 Fluid Ounces | | Volume | 1 liters | ## Product Details - **Brand:** Alpha Chemicals - **Item Form:** Powder - **Item Volume:** 1 liters - **Package Information:** Bottle - **Percentage assay:** 20 ## Images ![Ferrous Sulfate Heptahydrate - FeSO4*7H2O - 20% Iron - Very Soluble - 1 Pound - Image 1](https://m.media-amazon.com/images/I/51B8WTd81dL.jpg) ## Questions & Answers **Q: why does this say 20 percent iron? is it still 100% FeSO4?** A: The molar mass of the compound (ferrous sulfate hepthydrate) is about 278 g/mol. The molar mass of iron is about 56. 56/278 = 20% iron and 80% everything else. **Q: Is this the same ingredients as copperas** A: Ignore the other guy. Copperas = Iron sulfate **Q: Is this product good for acidifying soil for blueberries?** A: There are better products. Some iron (within reason) helps green up most plants, but the ferrous iron is a reductant, more like a weak base (sorta) than an acid. To acidify, use (dilute!) sulfuric or phosphoric acid, mono- or dibasic potassium phosphate, or elemental sulfur. **Q: will this product control moss in a flower garden without significantly affecting the PH of the soil?** A: no. this will lower the pH slightly. also i think you are referring to algae, which grows as a result of compaction and too much water. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Ferrous sulfate *by A***W on July 25, 2026* Works to kill clover in yard. Good value, Delivered on time ### ⭐⭐⭐⭐⭐ Super easy to use *by K***Y on May 22, 2026* We purchased this to use to gray our fence boards. We had to replace a few boards on our wooden privacy fence and thet didn't match the others, which were grayed. So we read online this would gray the boards and it did an excellent job. It saved us to much work of having to powerwash the other boards to try to make them match. It was super easy too. Just mix the powder with warm water, brush it on with a paintbrush and let it sit until the fence it your desired color, then rinse. ### ⭐⭐⭐⭐⭐ It works for my Brazilian Jasmine *by M***M on September 8, 2024* I used ferrous sulfate on my plants when they were on the verge of dying, and the results were amazing! After applying it, the plants came back to life with vibrant, healthy leaves, and flowers in about two weeks. It truly revived them and is now a key part of my plant care routine. However, one thing to be cautious about is that it can leave stains on the floor or nearby surfaces, so it's important to apply it carefully or place something underneath to catch any drips. ## Frequently Bought Together - Ferrous Sulfate Heptahydrate - FeSO4*7H2O - 20% Iron - Very Soluble - 1 Pound - Jacquard Alum Mordant for Natural Dyeing & Water Marbling – Essential Fabric Pre-Treatment for Vibrant, Long-Lasting Tie-Dyeing Colors - Quick-Dissolve Formula - 1 lb. Bag - Organic Cotton Plus Soda Ash - 1 Pound --- ## 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.jp/products/5603533-ferrous-sulfate-heptahydrate-feso4-7h2o-20-iron-very-soluble-1](https://www.desertcart.jp/products/5603533-ferrous-sulfate-heptahydrate-feso4-7h2o-20-iron-very-soluble-1) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-27*