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99% Sodium thiosulfate ISO Producer Na2S2O3 CAS 7772-98-7

Chemistry

Product Name: Sodium thiosulfate (CAS NO.7772-98-7)

MF: Na₂S₂O₃
MW: 158.108 g/mol
Appearance: white crystals
Odor: odorless
Density: 1.667 g/cm³
MP: 48.3 °C
BP: 100 °C (decomp)
Solubility in water: 20.9 g/100 ml (20 °C)
H-Bond Donor: 0
H-Bond Acceptor: 3
Structure Descriptors of Sodium thiosulfate (CAS NO.7772-98-7):
Canonical SMILES: [O-]S(=O)(=S)[O-].[Na+].[Na+]
InChI: InChI=1S/2Na.H2O3S2/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
InChIKey: AKHNMLFCWUSKQB-UHFFFAOYSA-L
Product Categories: Inorganics; Essential Chemicals; Reagent Plus; Routine Reagents; DetergentsSynthetic Reagents; Core Bioreagents; Research Essentials; Reference Material Potassium iodateTitration; Concentrates (e.g. FIXANAL); Salt Concentrates; S - ZSynthetic Reagents ;Salts; Sodium Salts; SodiumMetal and Ceramic Science; Inorganic Salts; Synthetic Reagents; Reference Material Potassium iodateVolumetric Solutions; Salt solutionsSynthetic Reagents; By Reference Material; S - ZTitration; Salt Solutions; Solution containers (VOLPAC); Volumetric Solutions; Hematology and Histology; Histology Special Stains

Specification

 

Items	Standard	Result
Appearance	Colorless or white crystalline	Conforms
Assay	99.0% min	99.5%
PH	6.0～7.5	Conforms
Appearance of solution	Complies with the standard	Conforms
Insoluble matter	0.005% max	0.0015%
Chloride	0.02% max	0.008%
Sulphates and sulphite	0.05% max	0.02%
Sulfur compounds	0.00025% max	0.0001%
Total nitrogen	0.005% max	0.003%
Magnesium	0.001% max	0.0004%
Calcium	0.003%max	0.001%
Iron	0.0005%max	0.0002%
Heavy metal	0.0005% max	0.00025%

 

 

Packaging	1kg-15kg packing	2 PE bag inside + 1 foil bag outside in carton
	25kg-50kg packing	2 PE bag inside + 1 foil bag outside in drum
	Other packing	Customized packing
Drum Size	D38cm*H60cm or customized, 25 kg/ drum
Shipping	1-50kg	International Express	Fast and convenient	Door to Door
	50-500kg	Air Transportation	Fast and cheap	To Air Port
	Above 500kg	Sea Transportation	Cheap and convenient	To Port

 

 

 

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Re-packing, drum filling, bagging

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