1.06516
Sodium thiosulfate pentahydrate
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Synonym(s):
Sodium thiosulfate pentahydrate, Antichlor
About This Item
grade
ACS reagent
Quality Level
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
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
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Related Categories
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).
Linkage
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
Legal Information
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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