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Na2S2O3•5H2O
Catalog Size Package Availability Manufacturer List Price Unit
S1500-500GM 500 GM Spectrum Chemical $98.35 $455.15 EA CS(6)

S1500-1KG Price Request EA
S1500-2.5KG 2.5 KG Spectrum Chemical $277.45 $833.95 EA CS(4)

S1500-12KG 12 KG Spectrum Chemical $513.75 EA
S1500-50KGBL 50 KG Spectrum Chemical $893.00 EA

Description Back to Top

Sodium Thiosulfate, Pentahydrate, Crystal, Reagent, ACS - In analytical chemistry, the most important use comes because the thiosulfate anion reacts stoichiometrically with iodine in aqueous solutions. As an ACS grade quality reagent, its chemical specifications are the de facto standards for chemicals used in many high-purity applications and typically designate the highest quality chemical available for laboratory use. Spectrum Chemical manufactured Reagent ACS grade products meet the toughest regulatory standards for quality and purity.

Specifications Back to Top

Test Specification
Min Max
ASSAY (Na2S2O3•5H2O) 99.5 - 101.0 %
pH OF A 5% SOLUTION @ 25oC 6.0 - 8.4
INSOLUBLE MATTER 0.005 %
NITROGEN COMPOUNDS (as N) 0.002 %
SULFATE AND SULFITE (as SO4) 0.1 %
SULFIDE (S) TO PASS TEST (lim.about 1 ppm)

Shipping & Storage Back to Top

Storage Information
HYGROSCOPIC: Keep tightly closed.
Shipping Information

Tariff No. 2832301000

Shipping Costs
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S1500 has a rating of 5 stars based on 7 reviews.