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1.06516
Sodium thiosulfate pentahydrate
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Synonym(s):
Sodium thiosulfate pentahydrate, Antichlor
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
500 g | Estimated to ship onAugust 26, 2026 | $95.20 |
1 kg | Estimated to ship onSeptember 30, 2026 | $146.00 |
5 kg | Estimated to ship TODAY | $512.00 |
25 kg | Estimated to ship onSeptember 15, 2026 | $2,920.00 |
About This Item
grade
ACS reagent
Quality Segment
agency
reag. ISO, reag. Ph. Eur., suitable for SM 2310, suitable for SM 2320, suitable for SM 4500 - NH3
product line
EMSURE®
assay
99.5-101.0% (iodometric)
form
solid
potency
>5000 mg/kg LD50, oral (Rat)
impurities
≤0.005% Insoluble matter
pH
6.0-7.5 (20 °C, 100 g/L in H2O)
mp
48 °C
density
1.74 g/cm3 at 20 °C
bulk density
1000 kg/m3
anion traces
chloride (Cl-): ≤0.008%, sulfate, sulfite (as SO42-): ≤0.1%, sulfide (S2-): passes test
cation traces
Ca: ≤0.002%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.001%, Mg: ≤0.001%, N: ≤0.002%, Pb: ≤0.0005%, heavy metals (as Pb): ≤0.001%
storage temp.
2-30°C
SMILES string
[Na+].[Na+].[S](=S)(=O)([O-])[O-].O.O.O.O.O
InChI
1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2
InChI key
PODWXQQNRWNDGD-UHFFFAOYSA-L
Application
- Synthesis of Aryl Amides from Acyl-Bunte Salts and Aryl Azides: Details the application of sodium thiosulfate pentahydrate in synthetic organic chemistry, specifically in the synthesis of aryl amides, illustrating its utility in facilitating complex chemical reactions (Chen et al., 2023).
Analysis Note
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water, 25 °C): 6.0 - 7.5
pH-value (10 %; water): 6.0 - 7.5
Chloride (Cl): ≤ 0.008 %
Sulfate and sulphite (as SO₄): ≤ 0.1 %
Sulfide (S): passes test
Heavy metals (as Pb): ≤ 0.001 %
Total nitrogen (N): ≤ 0.002 %
Ca (Calcium): ≤ 0.002 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.001 %
Mg (Magnesium): ≤ 0.001 %
Pb (Lead): ≤ 0.0005 %
Corresponds to ACS, ISO, Reag. Ph Eur
Other Notes
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| description for analysis EMSURE® ACS,ISO,Reag. Ph Eur | description puriss., meets analytical specification of Ph. Eur., BP, USP | description ACS reagent, ≥99.5% | description ReagentPlus®, ≥99.5% |
| form solid | form crystalline | form crystalline powder, crystals, pellets | form powder |
| assay 99.5-101.0% (iodometric) | assay 99.0-100.5% (USP, dry basis), 99.0-101.0% (EP) | assay ≥99.5% | assay ≥99.5% |
| Quality Level 300 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent | grade - | grade ACS reagent | grade - |
| anion traces chloride (Cl-): ≤0.008%, sulfide (S2-): passes test, sulfate, sulfite (as SO42-): ≤0.1% | anion traces sulfate, sulfite (as SO42-): ≤2000 mg/kg, sulfide (S2-): in accordance | anion traces S2-: passes test, SO42- and SO32-: ≤0.1% | anion traces - |
| cation traces Cu: ≤0.0005%, K: ≤0.001%, N: ≤0.002%, heavy metals (as Pb): ≤0.001%, Ca: ≤0.002%, Mg: ≤0.001%, Fe: ≤0.0005%, Pb: ≤0.0005% | cation traces As: ≤3 mg/kg, Ca: ≤50 mg/kg, Fe: ≤10 mg/kg | cation traces N: ≤0.002% | cation traces - |
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Storage Class
13 - Non Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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