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Sodium thiosulfate pentahydrate, 99% 350g, CAS 10102-17-7 leather tanning, US $310 – Picture 0
Sodium thiosulfate pentahydrate, 99% 350g, CAS 10102-17-7 leather tanning, US $310 – Picture 0

Sodium Thiosulfate Pentahydrate, 99% 350g, Cas 10102-17-7 Leather Tanning

US $310

  • Tallinn, Estonia
  • Oct 29th
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Name: Sodium thiosulfate pentahydrate CAS number: 10102-17-7 Molecular formula: Na2S2O3 x 5H2O Molar mass: 248.18 g/mol Appearance: white crystalline solid Assay: 99% Amount: 350 grams Personal protective equipment demands are included to the package. Store tightly sealed package in dark and dry place. This product is for laboratory uses, please do not use this item in animal fodder or human food and avoid skin contact. Sodium thiosulfate is used as a component in hand warmers and other chemical heating pads that produce heat by exothermic crystallization of a supercooled solution. In bacteriological water assessment, as it promotes the survival of coliform organisms by neutralizing residual chlorine. In the tanning of leather. To demonstrate the concept of supercooling in physics classes: Sodium thiosulfate, when heated, dissolves in its own water of crystallisation. This solution can be cooled to room temperature without recrystallisation. When crystallisation is induced by the addition of a small seed crystal, the sudden temperature rise can be experienced by touch.  Item(s) are shipped in 3 (three) workdays. Shopping carts over 29.99 USD (without shipping cost) are shipped by expedited service. Paypal address is used for shipping. Buying many items, the actual shipping cost will be calculated and extra payment will be refunded. To USA, Canada, Australia, Japan delivery takes about 2-4 weeks, to Europe countries about a week. By purchasing this product, buyer agrees that the seller, eBay or PayPal are not responsible in any way for any damages or injuries brought about by the use of this product. Buyer is at least 18 years old, and have the knowledge, experience and equipment to safely handle this product. Should you require further information, please do not hesitate to contact me. NOTE TO EBAY: This item is NOT listed under USPS publication 52 and is not considered as hazardous item.

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