--- product_id: 12167698 title: "Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.)" brand: "chemcenter" price: "B/.61" currency: PAB in_stock: true category: "Chem Center" url: https://www.desertcart.com.pa/products/12167698-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1 store_origin: PA region: Panama --- # 500g premium fine crystals Indefinite shelf life stability 99.5%+ purity reagent grade Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.) **Brand:** chemcenter **Price:** B/.61 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your experiments with ultra-pure Sodium Thiosulfate—because precision never goes out of style! ## Quick Answers - **What is this?** Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.) by chemcenter - **How much does it cost?** B/.61 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/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 - • **Lab-Grade Purity:** Guaranteed 99.5%+ assay for precise scientific applications - • **Enduring Shelf Life:** Stable compound with indefinite shelf life—stock up without worry - • **Bulk Ready Packaging:** Generous 500g bottle designed for frequent lab or industrial use - • **Optimal Crystal Quality:** Fine crystals ensure superior solubility and consistent results - • **Trusted by Professionals:** Highly rated (#23 Analytical Reagents) with 4.7 stars from 482 reviews ## Overview This 500-gram bottle of Sodium Thiosulfate Pentahydrate offers reagent-grade purity at 99.5% minimum, featuring fine crystals for enhanced solubility and consistent lab results. Packaged for professional scientific and industrial use, it boasts an indefinite shelf life, making it a reliable staple for analytical and experimental needs. Highly rated and trusted, this product is ideal for those who demand precision and quality in their chemical reagents. ## 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. ## 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 | #22,287 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #22 in Analytical Reagents | | Brand | ChemCenter | | Brand Name | ChemCenter | | Container Type | Bottle | | Customer Reviews | 4.7 out of 5 stars 481 Reviews | | Item Weight | 500 g | | 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 g - **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) ## 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. ## 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.pa/products/12167698-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1](https://www.desertcart.com.pa/products/12167698-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-15*