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Lab Pro Sodium Thiosulfate 0.1 N 1 gallon - ST1250-38

$53.26
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SKU: ZS0823-128
California prop 65
Description
  • Chemical Name
    Sodium Thiosulfate
  • Concentration
    0.100 N
  • Form
    Liquid
  • Application
    Volumetric Analysis
  • Molecular Formula
    Na₂S₂O₃

Description

What is Lab Pro Sodium Thiosulfate 0.1 N?

Lab Pro Sodium Thiosulfate 0.1 N is a standardized aqueous solution used in volumetric analysis. It is commonly used to estimate the concentration of specific compounds in solution, including hydrogen peroxide, and to determine chlorine content in bleaching powder and water samples.

This solution is also widely used as a titrant in iodometric analysis, where precise and consistent normality is required.

Key Features

  • Standardized sodium thiosulfate solution
  • 0.100 N concentration
  • Liquid form
  • Suitable for volumetric analysis and iodometry

Common Applications

  • Volumetric analysis
  • Iodometric titrations
  • Estimation of hydrogen peroxide concentration
  • Determination of chlorine content in bleaching powder
  • Water analysis

Packaging

  • Size: 1 Gallon

Standards and Certifications

  • Lab Pro CofA
  • Lab Pro SDS
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Chemical Information

IUPAC Name Disodium sulfanidesulfonate
Molecular Formula Na₂O₃S₂
Molecular Weight 158.10 g/mol
CAS Number 7772-98-7
MDL Number MFCD00003499

Structure Identifiers

SMILES [Na+].[Na+].[O-]S([S-])(=O)=O
InChI Key AKHNMLFCWUSKQB-UHFFFAOYSA-L

Physical Properties

Appearance Clear, colorless liquid
Form Liquid

Concentration

Normality 0.100 N ± 0.14% (± 0.0014 N)


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FAQs

What is Lab Pro Sodium Thiosulfate 0.1 N used for?

It is used as a standardized titrant in volumetric and iodometric analysis, commonly for determining chlorine levels in water, analyzing bleaching powder, and estimating hydrogen peroxide concentration in laboratory and quality control applications.

Why is sodium thiosulfate used in iodometric titrations?

Sodium thiosulfate reacts predictably with iodine, reducing it to iodide. This controlled reaction makes it ideal for iodometric titrations where accurate measurement of oxidizing agents is required.

Is this sodium thiosulfate solution ready to use?

Yes. The solution is pre-standardized at 0.100 N and supplied in liquid form, allowing direct use without dilution or additional preparation in analytical workflows.

What industries commonly use sodium thiosulfate titrants?

It is commonly used in analytical laboratories, water treatment facilities, environmental testing, chemical manufacturing, and educational laboratories requiring precise redox and chlorine analysis.

How should Lab Pro Sodium Thiosulfate 0.1 N be stored?

Store in a tightly sealed container at ambient laboratory temperatures. Proper storage helps maintain concentration accuracy and ensures consistent performance during volumetric and iodometric analysis.