--- product_id: 372380461 title: "Copper Sulfate Pentahydrate - 25.2% Cu - 5 Pounds - Easy to Dissolve - Powder" brand: "alpha chemicals" price: "AR$279304" currency: ARS in_stock: true reviews_count: 6 url: https://www.desertcart.com.ar/products/372380461-copper-sulfate-pentahydrate-25-2-cu-5-pounds-easy-to store_origin: AR region: Argentina --- # 5 lbs resealable freshness Easily dissolvable powder 25.2% pure Cu content Copper Sulfate Pentahydrate - 25.2% Cu - 5 Pounds - Easy to Dissolve - Powder **Brand:** alpha chemicals **Price:** AR$279304 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your experiments with pure, easy-to-use copper sulfate! ## Quick Answers - **What is this?** Copper Sulfate Pentahydrate - 25.2% Cu - 5 Pounds - Easy to Dissolve - Powder by alpha chemicals - **How much does it cost?** AR$279304 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/372380461-copper-sulfate-pentahydrate-25-2-cu-5-pounds-easy-to) ## 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 - • **Bulk Ready:** Generous 5-pound supply to fuel all your projects - • **Versatile Use:** Ideal for crystal growing, experiments, and industrial applications - • **Freshness Sealed:** Resealable bag with tear-off tab keeps product safe and fresh - • **Precision Purity:** Guaranteed 25.2% copper content for reliable results - • **Effortless Mixing:** Powder form designed to dissolve quickly and evenly ## Overview Alpha Chemicals Copper Sulfate Pentahydrate offers a high-purity 25.2% copper content in a convenient, fast-dissolving powder form. Packaged in a resealable 5-pound bag to maintain freshness, it’s perfect for crystal growing, laboratory experiments, and various industrial uses. ## Description Shipped in a resealable bag that is sealed for safety and freshness. It includes a tear-off tab for easy opening. ## Features - Chemical Structure - CuSO4*5H2O - Powder Form - Dissolves Easily - Great for crystal growing and other experiments - We sell bulk for so many different uses, we don't include any specific use instructions ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B005KECPOA | | Assay Of Chemical S | 25.2 | | Brand Name | Alpha Chemicals | | Container Type | Bag | | Customer Reviews | 4.6 4.6 out of 5 stars (694) 4.6 out of 5 stars | | Item Form | Powder | | Item Weight | 2.31 kg | | Manufacturer | Alpha Chemicals | | Model Number | 5CuSO4 | | Part Number | 5CUSO4 | | Upc | 725410979318 | ## Product Details - **Brand:** Alpha Chemicals - **Item form:** Powder - **Item weight:** 5.1 Pounds - **Package information:** Bag - **Percentage assay:** 25.2 ## Images ![Copper Sulfate Pentahydrate - 25.2% Cu - 5 Pounds - Easy to Dissolve - Powder - Image 1](https://m.media-amazon.com/images/I/61hpokJyovL.jpg) ## Questions & Answers **Q: Read this works for preventing mold and mildew on patio pavers, anyone try it?** A: Used for roots in sewer Do Not use on pavers or cement it Will stain **Q: Can I use this as a root killer in my septic tank? We basically live in the woods.** A: Flush 2 pounds of granular copper sulfate down the toilet for every 300 gallons of water that the septic tank holds. Copper sulfate kills and dissolves tree roots as they absorb the tank's water. After entering a tank, the majority of copper sulfate settles in tank, and little passes into the leach bed line. Also there should be no trees in a 50 foot radius of the system **Q: I have pipes thick/full of stringy roots. Am I better off using the powder form or in crystal form. My pipes are irrigation drains outside.** A: Wear safety glasses. Take 1.5 cups of rick, .5 cups of flour, and 6 cups of water, and bring to a boil to make a sticky mess. Add 1.5 cup of Copper sulfate and let it dissolve. Take the hot mix and pour it down the toilet and flush. Wait 1-2 minutes and flush again. Don't use water in the house for 4-8 hours, or longer to let the mix get to the roots and stay on them for as long as possible. This will help the copper get drawn into the roots and clog the uptake and then kill the roots in the line. They will break off and get flushed down the line over time. **Q: Copper sulfate is used as a flame colorant. is copper sulfate pentahydrate different? can i still add it to a fire to color the flames?** A: Yes, copper sulfate and copper sulfate pentahydrate are used interchangeably. ## Customer Reviews ### ⭐⭐⭐⭐⭐ No worries. *by on Reviewed in the United Arab Emirates 30 October 2022* Exactly as described. ### ⭐⭐⭐⭐⭐ Versatile Copper Sulfate That Delivers Serious Results *by on Reviewed in the United States 20 October 2025* Versatile Copper Sulfate That Delivers Serious ResultsAlpha Chemicals’ Copper Sulfate Pentahydrate is one of those old-school, multipurpose compounds that still earns its place in the shed. The fine powder dissolves quickly and evenly, making it easy to mix for different applications — from controlling algae in pools and ponds to keeping tree roots from invading sewer lines or even for copper crystal-growing experiments. The resealable bag keeps it dry, and the brilliant blue color is unmistakable proof of its purity.Performance-wise, it works exactly as expected. Used in small doses, it clears stubborn algae blooms fast and can help sanitize water systems without staining or leaving residue when properly dissolved. It’s also a strong root deterrent when flushed down pipes in solution form. Because it’s highly concentrated (25.2 % elemental copper), a little goes a long way, and five pounds will last most homeowners years.It doesn’t come with detailed directions — Alpha sells it for many different uses — so you’ll need to look up the correct dilution rate for your purpose and handle it carefully with gloves and a mask. Avoid direct contact with aquatic life or over-application in natural ponds.Bottom line: A high-purity, easy-to-dissolve copper sulfate that’s powerful, economical, and effective for algae control, root prevention, and general maintenance. Treat it with respect, mix it right, and it’ll perform like a professional-grade product. ### ⭐⭐⭐⭐⭐ Perfect Pool *by on Reviewed in the United States 16 July 2026* Just what my pools needed ## Frequently Bought Together - Copper Sulfate Pentahydrate - 25.2% Cu - 5 Pounds - Easy to Dissolve - Powder - Zinc Sulfate Monohydrate - 35.5% Zn - 99% Pure - 1 Pound - Calcium Hydroxide (Slaked Lime), 95%+ Purity(1kg/2.2pound) --- ## 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.com.ar/products/372380461-copper-sulfate-pentahydrate-25-2-cu-5-pounds-easy-to](https://www.desertcart.com.ar/products/372380461-copper-sulfate-pentahydrate-25-2-cu-5-pounds-easy-to) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-11-14*