--- product_id: 452767676 title: "Sodium Thiosulfate, Fine Crystals, 99.5% min, 500 Grams (1.1 lb.)" brand: "chemcenter" price: "฿7654" currency: THB in_stock: true reviews_count: 5 category: "Chem Center" url: https://www.desertcart.co.th/products/452767676-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1 store_origin: TH region: Thailand --- # Indefinite shelf life 500g fine crystal granules 99.5% reagent-grade purity Sodium Thiosulfate, Fine Crystals, 99.5% min, 500 Grams (1.1 lb.) **Brand:** chemcenter **Price:** ฿7654 **Availability:** ✅ In Stock ## Summary > ⚗️ Elevate your experiments with purity that professionals trust! ## Quick Answers - **What is this?** Sodium Thiosulfate, Fine Crystals, 99.5% min, 500 Grams (1.1 lb.) by chemcenter - **How much does it cost?** ฿7654 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/452767676-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 to use—always ready when you are - • **Optimal Granule Size:** Fine crystals dissolve quickly for efficient chemical reactions - • **Ultra-Pure Precision:** 99.5% assay ensures reliable, lab-grade results every time - • **Trusted Scientific Standard:** Manufactured in the USA by RND Center Inc., a leader in lab reagents - • **Versatile Laboratory Essential:** Ideal for dechlorination, photographic fixing, and other critical applications ## Overview Sodium Thiosulfate Fine Crystals (99.5% min, 500g) is a high-purity reagent-grade chemical designed for precise laboratory and scientific use. Packaged in a secure bottle, it offers fine granules that dissolve rapidly and an indefinite shelf life, making it a dependable staple for dechlorination, photographic processing, and other industrial 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: No surprises with the product quality. - My first purchase of this item and it's all good. They told me it would be 6 days late but was only one day late. Came in excellent condition. Dissolves in water rapidly, and as expected. Review: Works great - Excellent product at a good price ## 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 | #238,767 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #647 in Inorganic Reagents | | Brand | ChemCenter | | Brand Name | ChemCenter | | Container Type | Bottle | | Country Of Origin | USA | | Customer Reviews | 4.7 out of 5 stars 456 Reviews | | Item Form | Granule | | 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 ### ⭐⭐⭐⭐⭐ No surprises with the product quality. *by T***R on 26 April 2026* My first purchase of this item and it's all good. They told me it would be 6 days late but was only one day late. Came in excellent condition. Dissolves in water rapidly, and as expected. ### ⭐⭐⭐⭐⭐ Works great *by A***R on 20 April 2026* Excellent product at a good price ### ⭐⭐⭐⭐⭐ excellent product *by C***M on 7 April 2026* A little sodium thiosulfate goes a long ways... ## 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.co.th/products/452767676-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1](https://www.desertcart.co.th/products/452767676-sodium-thiosulfate-fine-crystals-99-5-min-500-grams-1) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-05-30*