--- product_id: 78266114 title: "4 x 1000 ml (More Than One Gallon) 4 Liters Phosphoric Acid 85% Food Grade, Rust Remover, pH Down - High Purity Phos Acid - More Than 4 Quarts - Made in the USA" brand: "gotparts747" price: "€ 239.59" currency: EUR in_stock: true reviews_count: 8 category: "Gotparts747" url: https://www.desertcart.sk/products/78266114-4-x-1000-ml-more-than-one-gallon-4-liters store_origin: SK region: Slovakia --- # 85% high purity phosphoric acid UN-approved HDPE bottles for safe storage Made in USA with American workforce 4 x 1000 ml (More Than One Gallon) 4 Liters Phosphoric Acid 85% Food Grade, Rust Remover, pH Down - High Purity Phos Acid - More Than 4 Quarts - Made in the USA **Brand:** gotparts747 **Price:** € 239.59 **Availability:** ✅ In Stock ## Summary > ⚗️ Elevate your projects with pure, powerful phosphoric acid — made to perform and built to last! ## Quick Answers - **What is this?** 4 x 1000 ml (More Than One Gallon) 4 Liters Phosphoric Acid 85% Food Grade, Rust Remover, pH Down - High Purity Phos Acid - More Than 4 Quarts - Made in the USA by gotparts747 - **How much does it cost?** € 239.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/78266114-4-x-1000-ml-more-than-one-gallon-4-liters) ## Best For - gotparts747 enthusiasts ## Why This Product - Trusted gotparts747 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pure Power in Every Drop:** 85% food-grade phosphoric acid ensures maximum effectiveness and safety for diverse uses. - • **Secure & Durable Packaging:** UN-approved HDPE bottles guarantee safe, long-term storage without leaks or degradation. - • **Crafted with American Excellence:** Proudly made in the USA, supporting local manufacturing and quality control. - • **Versatile Rust Remover & pH Balancer:** Perfect for neutralizing alkaline soil, removing rust, and optimizing garden health. - • **Trusted by Professionals & Gardeners Alike:** Highly rated with 4.6 stars, delivering consistent results for industrial and home use. ## Overview This 4-liter pack of 85% food-grade phosphoric acid offers high purity and versatility, ideal for rust removal, pH balancing in gardening, and industrial applications. Packaged in UN-approved HDPE bottles and proudly made in the USA, it ensures safe handling and supports American manufacturing standards. ## Description Product description Review: Well packaged and a good value in phosphoric acid - I used this product to neutralize some charcoal produced from burning dead brush and small branches before using it to fertilize raised bed gardens. To make the char, I put my fire out with water as soon as the wood was burned down to a bed of coals and stirred it while spraying until smoke stopped entirely. Char is a great additive to soil, but is much too alkaline without neutralization. The phosphoric acid neutralizes the potash and produces a nice neutral buffer containing both K and P in balance for fertilizing. Experimenting while using a pH meter, it takes about 4 ounces of phosphoric acid for 10 pounds of charcoal to neutralize it. The char binds to the potassium and phosphate ions and helps soil to retain the nutrients longer. I also use sulfur to neutralize alkaline pH from char, and this helps with soil structure as well. Being food grade, this product can be used without concern for toxins accumulating in the garden the way aluminum sulfate can. Review: Good Product - I like to use H3PO4 to remove rust and it works well and is safe to use. Interestingly, at least to me, is the need for it to come in a container that lasts. I purchased the acid from a competitor and used part. Several months later I decided to use some more. I picked the container up and the top tore off like paper. Wasted about half a gallon. Made the purchase real expensive and cleaning up the mess was not fun. Moral of the story, make sure the container the vendor uses is safe for storage of the acid. I believe the product reviewed is stored in HDPE. But to be super safe get a gallon glass jug. ## Features - More than one gallon of high purity phosphoric acid - This product is packaged in UN approved high purity HDPE bottles. - This product is made in USA with raw materials, packaging, manufacturing and quality utilizing American workforce. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07H4K181M | | Best Sellers Rank | #295,731 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #270 in Chemical Acids | | Brand | gotparts747 | | Brand Name | gotparts747 | | Container Type | Bottle | | Customer Reviews | 4.6 out of 5 stars 62 Reviews | | Item Form | Liquid | | Item Volume | 4 Quarts | | Manufacturer | USA | | Package Information | Bottle | | UPC | 617689963191 | | Unit Count | 135.3 Fluid Ounces | | Volume | 4 Quarts | ## Product Details - **Brand:** gotparts747 - **Item Volume:** 4 Quarts - **Package Information:** Bottle - **Item Form:** Liquid - **Manufacturer:** USA ## Images ![4 x 1000 ml (More Than One Gallon) 4 Liters Phosphoric Acid 85% Food Grade, Rust Remover, pH Down - High Purity Phos Acid - More Than 4 Quarts - Made in the USA - Image 1](https://m.media-amazon.com/images/I/81AuCyJCN0L.jpg) ## Questions & Answers **Q: Can anyone confirm this is labeled as food grade? I can't see this on the low-res image on Amazon.** A: From the FDA website Food grade means that the material is either safe for human consumption or it is okay to come into direct contact with food products. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Well packaged and a good value in phosphoric acid *by D***D on March 19, 2021* I used this product to neutralize some charcoal produced from burning dead brush and small branches before using it to fertilize raised bed gardens. To make the char, I put my fire out with water as soon as the wood was burned down to a bed of coals and stirred it while spraying until smoke stopped entirely. Char is a great additive to soil, but is much too alkaline without neutralization. The phosphoric acid neutralizes the potash and produces a nice neutral buffer containing both K and P in balance for fertilizing. Experimenting while using a pH meter, it takes about 4 ounces of phosphoric acid for 10 pounds of charcoal to neutralize it. The char binds to the potassium and phosphate ions and helps soil to retain the nutrients longer. I also use sulfur to neutralize alkaline pH from char, and this helps with soil structure as well. Being food grade, this product can be used without concern for toxins accumulating in the garden the way aluminum sulfate can. ### ⭐⭐⭐⭐⭐ Good Product *by M***N on December 30, 2021* I like to use H3PO4 to remove rust and it works well and is safe to use. Interestingly, at least to me, is the need for it to come in a container that lasts. I purchased the acid from a competitor and used part. Several months later I decided to use some more. I picked the container up and the top tore off like paper. Wasted about half a gallon. Made the purchase real expensive and cleaning up the mess was not fun. Moral of the story, make sure the container the vendor uses is safe for storage of the acid. I believe the product reviewed is stored in HDPE. But to be super safe get a gallon glass jug. ### ⭐⭐⭐⭐⭐ Great value for Homemade pH Down *by D***R on June 10, 2021* I use to make my own ph down and it works fine. 7:1 ratio with H2O. Quality bottles and packaging was VERY secure. I have zero complaints. Review wants to know how many stars for flavor. I give it 5 stars. 85% phosphoric acid tastes like lightning. lol. In all seriousness, great product and I would repurchase if I need more. Please do not taste. --- ## 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.sk/products/78266114-4-x-1000-ml-more-than-one-gallon-4-liters](https://www.desertcart.sk/products/78266114-4-x-1000-ml-more-than-one-gallon-4-liters) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-07-30*