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Sodium thiosulphate pentahydrate, 500 g

≥99 %, Ph. Eur., USP, BP
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Empirical formula Na2S2O3 · 5 H2O
Molar mass (M) 248,18 g/mol
Density (D) 1,73 g/cm³
Melting point (mp) 48 °C
WGK 1
CAS No. [10102-17-7]
EG-Nr. 231-867-5

Photographic fixer

€16.70/Pack Qty. 

excl. VAT. | 500 g per Pack Qty.

Art. No. T109.2

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Product details



Sodium thiosulphate pentahydrate ≥99 %, Ph. Eur., USP, BP

Technical Information
Checked according to pharmacopoeia Ph. Eur. 
USP 
BP 
Sodium thiosulphate pentahydrate
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Order No. Pack Qty. Pack. Price Quantity
T109.1 1 kg plastic €25.30
T109.2 500 g plastic €16.70
T109.3 5 kg plastic €83.35
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Certificates of Analysis

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The following analysis certificates have been found:

Guarantee analysis

Assay (iodom.)99,0-100,5 %
Identitycomplies
pH value (10 % solution)6,0-8,4
Appearance of solutioncomplies
Loss on drying32,0-37,0 %
Total nitrogen (as N)≤0,01 %
Sulphate and sulphite (as SO4)≤0,2 %
Sulphide (S)complies
Chloride (Cl)≤0,02 %
Arsenic (As)≤0,0003 %
Lead (Pb)≤0,001 %
Copper (Cu)≤0,001 %
Magnesium (Mg)≤0,01 %
Calcium (Ca)complies
Iron (Fe)≤0,001 %
Nickel (Ni)≤0,001 %

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