--- product_id: 12167698 title: "Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.)" brand: "chemcenter" price: "AR$5909" currency: ARS in_stock: true reviews_count: 10 category: "Chem Center" url: https://www.desertcart.com.ar/products/12167698-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1 store_origin: AR region: Argentina --- # 500g precise lab quantity Indefinite shelf life stability 99.5%+ purity reagent grade Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.) **Brand:** chemcenter **Price:** AR$5909 **Availability:** ✅ In Stock ## Summary > ⚗️ Elevate your experiments with precision-grade Sodium Thiosulfate! ## Quick Answers - **What is this?** Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.) by chemcenter - **How much does it cost?** AR$5909 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/12167698-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1) ## Best For - chemcenter enthusiasts ## Why This Product - Trusted chemcenter brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Term Stability:** Indefinite shelf life means no rush, no waste - • **Safe & Compliant Use:** Strictly for lab use, ensuring regulatory peace of mind - • **Trusted by Professionals:** Top 25 in Analytical Reagents with 4.7-star rating - • **Ultra-Pure Reagent Grade:** Guaranteed 99.5%+ assay for reliable lab results - • **Perfect Lab-Scale Quantity:** 500 grams ideal for repeated scientific experiments ## Overview This 500-gram bottle of Sodium Thiosulfate Pentahydrate offers a high-purity (99.5% minimum) reagent-grade chemical ideal for laboratory and scientific applications. Packaged for long-term stability with an indefinite shelf life, it is a trusted choice among professionals ranked in the top 25 analytical reagents. Note: strictly for lab use, not for food or drug applications. ## Description You are purchasing 500 grams of Reagent (99.5+ min.%) Sodium Thiosulfate, Pentahydrate. This is NOT the cheaper quality large crystals others sell for dechlorination of pools, etc. Buyer assumes all liability for the use of this item. Buyer agrees to use this item in accordance with all local, state, and federal laws. This is for laboratory and scientific use only! NOT for food or drug use. Picture may not reflect new GHS labeling. Review: Works great - Excellent product at a good price Review: excellent product - A little sodium thiosulfate goes a long ways... ## Features - Packaging and Labeling May Vary Product has an indefintie shelf life ## Technical Specifications | Specification | Value | |---------------|-------| | % Assay of Chemical(s) | 99.5 | | ASIN | B00JERVY5A | | Best Sellers Rank | #17,962 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #19 in Analytical Reagents | | Brand | ChemCenter | | Brand Name | ChemCenter | | Container Type | Bottle | | Customer Reviews | 4.7 out of 5 stars 473 Reviews | | Item Weight | 500 Grams | | Manufacturer | RND Center Inc. | | Molecular Weight | 84.01 | | Molecular weight | 84.01 | | Package Information | Bottle | | Percentage assay | 99.5 | ## Product Details - **Brand:** ChemCenter - **Item Weight:** 500 Grams - **Molecular weight:** 84.01 - **Package Information:** Bottle - **Percentage assay:** 99.5 ## Images ![Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.) - Image 1](https://m.media-amazon.com/images/I/617hXRA+YKL.jpg) ![Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.) - Image 2](https://m.media-amazon.com/images/I/81COQLlOr9L.jpg) ## Questions & Answers **Q: Can this be used for dechlorinating tap water for aquariums?** A: I use this product for getting stains and yellow spots out of table linens. **Q: expiration date?** A: Most minerals do not expire because they are natural elements, furthermore vitamins don't really expire they may lose some potency **Q: Where in the bottle is the expiration date or manufacture date? I dont see it anywhere** A: I don't see a date. My last purchase was May, 2019 and it still seems to be working fine. I'm reading information from different data sources for an expiration of 12 to 18 months. **Q: Is this food grade?** A: I don't think sodium Thiosulfate is good for the human body. In fact I actually think it's bad because all I use it for putting patina on metals. But I'm not an expert on what's a poison, or a chemist. But I wouldn't eat it or feed it to anyone I loved unless I did some serious research on what it does to the human body with an experienced chemist or an MD who's a poisons expert. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by A***R on April 20, 2026* Excellent product at a good price ### ⭐⭐⭐⭐⭐ excellent product *by C***M on April 7, 2026* A little sodium thiosulfate goes a long ways... ### ⭐⭐⭐⭐⭐ Skin parasite solution *by N***A on January 19, 2019* This seems pure and shipment is very quick. Ordered twice. Purity is important with this product for personal use. I learned of sodium thiosulfate from a candida protocol in the book: Candida--Killing So Sweetly, by Bill Thompson. This is helping remove biofilm, inside and out. Tnompson recommends 6-10 drops of 10% solution. Seller was quick to answer how to create the 10%; it'the ratio by weight (1:9, s.t. and water). My scale indicated 1 Tblsp. s.t. to 2/3 C. water. I've experimented with a long list of things to kill skin parasitez and a subtle fungus. A very effective remedy is so simple. I fill a 2 cup container with borax and about 2 tablespoons of s.t. Add just enough liquid Dr. Bronner's liquid castille soap to cover. Scrub scalp and let set while scrubbing all over. Try to let each area absorb some before rinsing. Dry well with a textured, fresh towel. Do this at least once a day., along with salt or clay baths 12 hours later. For severe infections, reapply a solution of borax or Epsom salt with a little sodium thiosulfate after bathing and let it dry. ( I have spent a fortune on way less effective ingredients.) This is a godsend. Thank you! ## Frequently Bought Together - Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.) - Silver Nitrate Crystal Powder 10 Grams / >99.9% Pure ACS Grade / 10g - Bontip Glass Spray Bottle, Amber Glass Spray Bottle Set & Accessories for Non-toxic Window Cleaners Aromatherapy Facial Hydration Watering Flowers Hair Care (2 Pack/16 oz) (Amber) --- ## 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/12167698-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1](https://www.desertcart.com.ar/products/12167698-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-22*