1. Materials information
English name: Sodium Thiosulfate Pentahydrate
Molecular formula: Na2S2O3 · 5H2O
Molecular weight: 248.18
CAS number: 10102-17-7
Appearance: Colorless crystals or white particles. No odor. Slightly deliquescent in humid air. Weathering in dry air above 33 ℃, melting when rapidly heated to 48 ℃, losing crystalline water at 100 ℃, and decomposing at higher temperatures. Soluble in 0.5 parts of water, insoluble in ethanol. The aqueous solution slowly decomposes at room temperature, while heating accelerates the decomposition rate. The aqueous solution is almost neutral, with a pH of 6.5-8.0.
Storage: Sealed, cool, dry, and protected from light.
Usage: Oxidation-reduction titration. Microanalytical reagents. Droplet analysis to determine cobalt. Measure blood sodium. Preparation of disaccharide iron urea culture medium, etc. Photographic fixing agent. Chlorination agent.
Executive standard: GB/T 637-2006
2. Packaging of materials
For powders: normal is 25kgs/Drum or bag, or larger/smaller package as request.
For liquids: normal 25kgs/drum, 180-300kgs/bucket, or IBC, determined by the nature of the product.
Or smaller package 1kg/bottle, 10kgs/bottle as request.
3. Shipping & Delivery
Provide door to door service
Suitable for goods under 50kg
Delivery: 3-7 days
Cost: low cost
Provide airport to airport service
Suitable for goods over 50kg
Delivery: 3-14 days
Cost: high cost
Provide seaport to seaport service
Suitable for goods over 100kg
Delivery: 2-45 days
Cost: low cost
4. Contact information
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